/* ==========================================================================
   图久智控 TUJIU SMART CONTROL —— 全站公共样式
   设计风格：深色科技风 · 品牌橙 + 科技青 · 响应式
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
    --bg: #070e1c;
    --bg-2: #0b1730;
    --bg-3: #10213f;
    --panel: rgba(255, 255, 255, 0.045);
    --panel-solid: #0e1c36;
    --border: rgba(122, 162, 224, 0.16);
    --border-hover: rgba(245, 166, 35, 0.55);
    --text: #e9f0fb;
    --text-2: #a9bbd6;
    --text-muted: #8298b8;
    --orange: #f5a623;
    --orange-2: #ffbe4d;
    --orange-deep: #d98a0a;
    --cyan: #36c6f0;
    --cyan-2: #63e6ff;
    --grad-orange: linear-gradient(135deg, #ffc15e 0%, #f5a623 55%, #e0890a 100%);
    --grad-cyan: linear-gradient(135deg, #4fd8ff 0%, #2f9fe8 100%);
    --grad-panel: linear-gradient(160deg, rgba(54, 198, 240, 0.08) 0%, rgba(255, 255, 255, 0.03) 45%, rgba(245, 166, 35, 0.06) 100%);
    --shadow-card: 0 18px 50px -22px rgba(0, 0, 0, 0.75);
    --header-h: 72px;
    --radius: 14px;
    --maxw: 1200px;
}

/* ---------- 基础重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI",
        -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

::selection {
    background: rgba(245, 166, 35, 0.35);
    color: #fff;
}

/* 通用容器 */
.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   通用组件
   ========================================================================== */

/* 区块标题 */
.section {
    padding: 96px 0;
    position: relative;
}

.section--tight {
    padding: 72px 0;
}

.section-alt {
    background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%);
}

.head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}

.head--left {
    text-align: left;
    margin-left: 0;
}

.head__en {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--cyan);
    font-weight: 600;
    margin-bottom: 12px;
}

.head__title {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: 1px;
    line-height: 1.3;
}

.head__title em {
    font-style: normal;
    background: var(--grad-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.head__desc {
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 15.5px;
}

.head__line {
    width: 64px;
    height: 3px;
    margin: 22px auto 0;
    border-radius: 2px;
    background: var(--grad-orange);
}

.head--left .head__line {
    margin-left: 0;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease,
        border-color 0.25s ease, color 0.25s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--grad-orange);
    color: #1a1205;
    box-shadow: 0 12px 30px -10px rgba(245, 166, 35, 0.65);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 38px -10px rgba(245, 166, 35, 0.75);
    color: #1a1205;
}

.btn-ghost {
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(6px);
}

.btn-ghost:hover {
    border-color: var(--cyan);
    color: var(--cyan-2);
    transform: translateY(-2px);
}

.btn-link {
    color: var(--orange);
    font-weight: 600;
    font-size: 14.5px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-link::after {
    content: "→";
    transition: transform 0.25s ease;
}

.btn-link:hover {
    color: var(--orange-2);
}

.btn-link:hover::after {
    transform: translateX(5px);
}

/* 标签 */
.tag {
    display: inline-block;
    padding: 4px 14px;
    margin: 4px 6px 4px 0;
    font-size: 13px;
    color: var(--text-2);
    border: 1px solid var(--border);
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.03);
    transition: all 0.25s ease;
}

.tag:hover {
    color: var(--cyan-2);
    border-color: rgba(54, 198, 240, 0.5);
}

.tag--orange {
    color: var(--orange-2);
    border-color: rgba(245, 166, 35, 0.4);
    background: rgba(245, 166, 35, 0.08);
}

/* 玻璃卡片 */
.card {
    position: relative;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--grad-panel);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

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

.card > * {
    position: relative;
    z-index: 1;
}

.card__icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(245, 166, 35, 0.12);
    border: 1px solid rgba(245, 166, 35, 0.35);
    margin-bottom: 20px;
    font-size: 26px;
}

.card__icon--cyan {
    background: rgba(54, 198, 240, 0.12);
    border-color: rgba(54, 198, 240, 0.35);
}

.card__title {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.card__text {
    color: var(--text-muted);
    font-size: 14.5px;
}

/* ==========================================================================
   页头导航
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    border-bottom: 1px solid transparent;
}

.header.is-scrolled {
    background: rgba(7, 14, 28, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
    box-shadow: 0 10px 40px -18px rgba(0, 0, 0, 0.8);
}

.header__inner {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__logo img {
    height: 56px;
    width: auto;
    filter: drop-shadow(0 0 12px rgba(245, 166, 35, 0.45));
    transition: filter 0.3s ease;
}

.header__logo:hover img {
    filter: drop-shadow(0 0 18px rgba(245, 166, 35, 0.6));
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav__link {
    position: relative;
    padding: 8px 16px;
    font-size: 15px;
    color: #cdd9ec;
    letter-spacing: 1px;
}

.nav__link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--grad-orange);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav__link:hover,
.nav__link.is-active {
    color: #fff;
}

.nav__link:hover::after,
.nav__link.is-active::after {
    width: 60%;
}

.header__btn {
    margin-left: 14px;
    padding: 9px 22px;
    font-size: 14px;
}

/* 汉堡按钮 */
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    position: relative;
    z-index: 1100;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    margin: 5px auto;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   内页顶部横幅
   ========================================================================== */
.page-banner {
    padding: 168px 0 84px;
    position: relative;
    background-position: center;
    background-size: cover;
    text-align: center;
}

.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 14, 28, 0.82) 0%,
            rgba(7, 14, 28, 0.72) 45%, rgba(7, 14, 28, 0.96) 100%);
}

.page-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 120%, rgba(54, 198, 240, 0.14), transparent 60%);
}

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

.page-banner__title {
    font-size: 42px;
    font-weight: 700;
    letter-spacing: 3px;
}

.page-banner__title em {
    font-style: normal;
    background: var(--grad-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-banner__sub {
    margin-top: 14px;
    color: var(--text-2);
    letter-spacing: 4px;
    font-size: 14px;
    text-transform: uppercase;
}

.crumb {
    margin-top: 22px;
    font-size: 13.5px;
    color: var(--text-muted);
}

.crumb a:hover {
    color: var(--orange-2);
}

.crumb span {
    margin: 0 10px;
    color: #48607f;
}

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-image: url("../images/bg/bg-hero.jpg");
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 78% 18%, rgba(54, 198, 240, 0.18), transparent 55%),
        linear-gradient(105deg, rgba(7, 14, 28, 0.94) 0%, rgba(7, 14, 28, 0.78) 45%,
            rgba(7, 14, 28, 0.55) 100%),
        linear-gradient(180deg, rgba(7, 14, 28, 0.55) 0%, rgba(7, 14, 28, 0.96) 100%);
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(54, 198, 240, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(54, 198, 240, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 30% 40%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 0%, transparent 75%);
}

.hero .container {
    position: relative;
    z-index: 3;
    padding-top: 72px;
    padding-bottom: 60px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 18px;
    border-radius: 100px;
    border: 1px solid rgba(54, 198, 240, 0.4);
    background: rgba(54, 198, 240, 0.08);
    color: var(--cyan-2);
    font-size: 13.5px;
    letter-spacing: 2px;
    margin-bottom: 28px;
}

.hero__badge i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}

.hero__title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: 2px;
    max-width: 900px;
}

.hero__title .accent {
    background: var(--grad-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__slogan {
    margin-top: 18px;
    font-size: 20px;
    color: #b9cbe4;
    letter-spacing: 6px;
    font-weight: 300;
}

.hero__desc {
    margin-top: 26px;
    max-width: 640px;
    color: var(--text-muted);
    font-size: 16px;
}

.hero__actions {
    margin-top: 40px;
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.hero__stats {
    margin-top: 68px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 920px;
}

.hero__stat {
    border-left: 2px solid rgba(245, 166, 35, 0.55);
    padding-left: 18px;
}

.hero__stat b {
    display: block;
    font-size: 38px;
    font-weight: 800;
    background: var(--grad-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero__stat span {
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    letter-spacing: 3px;
    text-align: center;
}

.scroll-hint::after {
    content: "";
    display: block;
    width: 1px;
    height: 34px;
    margin: 8px auto 0;
    background: linear-gradient(180deg, var(--orange), transparent);
    animation: scrolldown 1.8s ease-in-out infinite;
}

@keyframes scrolldown {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==========================================================================
   首页 · 公司简介
   ========================================================================== */
.about-split {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-split__media {
    position: relative;
}

.about-split__media img.main {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    width: 100%;
}

.about-split__media .floating {
    position: absolute;
    right: -24px;
    bottom: -30px;
    width: 46%;
    border-radius: 12px;
    border: 1px solid rgba(245, 166, 35, 0.4);
    box-shadow: 0 20px 50px -18px rgba(0, 0, 0, 0.8);
}

.about-split__lead {
    font-size: 19px;
    line-height: 1.9;
    color: #d3e0f2;
    margin: 18px 0 18px;
}

.about-split__text p {
    color: var(--text-muted);
    margin-bottom: 14px;
}

.about-split__points {
    margin: 24px 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
}

.about-split__points li {
    position: relative;
    padding-left: 26px;
    font-size: 14.5px;
    color: var(--text-2);
}

.about-split__points li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 18px;
    height: 18px;
    line-height: 18px;
    text-align: center;
    font-size: 11px;
    border-radius: 50%;
    color: #1a1205;
    background: var(--grad-orange);
    font-weight: 700;
}

/* 数据条 */
.stat-bar {
    background: var(--bg-2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-bar__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
}

.stat-bar__item {
    padding: 46px 16px;
    position: relative;
}

.stat-bar__item + .stat-bar__item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: var(--border);
}

.stat-bar__item b {
    font-size: 42px;
    font-weight: 800;
    display: block;
    color: #fff;
}

.stat-bar__item b .unit {
    font-size: 20px;
    color: var(--orange);
    margin-left: 2px;
}

.stat-bar__item span {
    color: var(--text-muted);
    font-size: 14.5px;
    letter-spacing: 1px;
}

/* ==========================================================================
   通用网格
   ========================================================================== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

/* 业务领域大卡 */
.field-card {
    padding: 0;
    display: flex;
    flex-direction: column;
}

.field-card__img {
    height: 210px;
    overflow: hidden;
    position: relative;
}

.field-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.field-card:hover .field-card__img img {
    transform: scale(1.07);
}

.field-card__img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(14, 28, 54, 0.9) 100%);
}

.field-card__body {
    padding: 26px 26px 30px;
}

.field-card__badge {
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--cyan);
    font-weight: 600;
}

.field-card__title {
    font-size: 22px;
    font-weight: 700;
    margin: 8px 0 10px;
}

.field-card__text {
    color: var(--text-muted);
    font-size: 14.5px;
    margin-bottom: 16px;
}

/* 产品体系卡 */
.series-card {
    text-align: center;
    padding: 34px 22px;
}

.series-card__img {
    height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.series-card__img img {
    max-height: 120px;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.45));
    transition: transform 0.35s ease;
}

.series-card:hover .series-card__img img {
    transform: scale(1.06);
}

.series-card__name {
    font-size: 18px;
    font-weight: 700;
}

.series-card__en {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    margin: 4px 0 10px;
}

.series-card__desc {
    font-size: 13.5px;
    color: var(--text-muted);
}

/* ==========================================================================
   技术区块
   ========================================================================== */
.tech-feature {
    display: flex;
    gap: 22px;
    align-items: flex-start;
}

.tech-feature .card__icon {
    flex-shrink: 0;
    margin-bottom: 0;
}

.tech-feature h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.tech-feature p {
    color: var(--text-muted);
    font-size: 14px;
}

.tech-band {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.tech-band__img {
    height: 460px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.tech-band__img::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(7, 14, 28, 0.95) 0%, rgba(7, 14, 28, 0.72) 50%,
            rgba(7, 14, 28, 0.35) 100%);
}

.tech-band__content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
}

.tech-band__inner {
    max-width: 620px;
}

.tech-band__inner h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 18px;
}

.tech-band__inner p {
    color: #b9cbe4;
    margin-bottom: 14px;
}

/* 架构层 */
.arch {
    max-width: 980px;
    margin: 0 auto;
}

.arch__layer {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 20px;
    align-items: stretch;
    margin-bottom: 14px;
}

.arch__label {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-radius: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 15px;
    color: #10213f;
    background: var(--grad-orange);
    padding: 12px;
}

.arch__layer--cyan .arch__label {
    background: var(--grad-cyan);
}

.arch__layer--plain .arch__label {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text);
    border: 1px solid var(--border);
}

.arch__nodes {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    padding: 18px 20px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--panel);
}

.arch__node {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 14px;
    background: rgba(54, 198, 240, 0.08);
    border: 1px solid rgba(54, 198, 240, 0.25);
    color: var(--text-2);
}

.arch__arrow {
    text-align: center;
    color: var(--orange);
    font-size: 20px;
    margin: -6px 0 8px;
}

/* 规格表样式的列表 */
.spec-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 28px;
    margin-top: 16px;
}

.spec-list li {
    position: relative;
    padding-left: 22px;
    font-size: 14.5px;
    color: var(--text-2);
}

.spec-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--cyan);
    transform: rotate(45deg);
}

.spec-list li b {
    color: #fff;
}

/* ==========================================================================
   产品页
   ========================================================================== */
.series-block {
    margin-bottom: 30px;
}

.series-panel {
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--panel);
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.series-panel:hover {
    border-color: rgba(54, 198, 240, 0.4);
    box-shadow: var(--shadow-card);
}

.series-panel__head {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 0;
}

.series-panel__media {
    position: relative;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 34px;
    background:
        radial-gradient(circle at 50% 30%, rgba(54, 198, 240, 0.12), transparent 70%),
        linear-gradient(160deg, #f4f8ff 0%, #dfe7f5 100%);
}

.series-panel__media img {
    max-height: 230px;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 14px 20px rgba(16, 33, 63, 0.25));
}

.series-panel__media .code {
    position: absolute;
    left: 18px;
    top: 16px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: rgba(16, 33, 63, 0.45);
}

.series-panel__info {
    padding: 36px 38px;
}

.series-panel__info h3 {
    font-size: 26px;
    font-weight: 700;
}

.series-panel__info .en {
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--cyan);
    margin: 4px 0 14px;
}

.series-panel__info > p {
    color: var(--text-muted);
    font-size: 14.5px;
}

.series-panel__items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    padding: 0 38px 38px;
}

.series-panel__items.on-head {
    grid-column: 1 / -1;
    padding-top: 30px;
    border-top: 1px dashed var(--border);
}

.series-panel__items--cols4 {
    grid-template-columns: repeat(4, 1fr);
}

.pitem {
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 14px 16px;
    background: rgba(255, 255, 255, 0.025);
    transition: all 0.3s ease;
}

.pitem:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.pitem__img {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.pitem__img img {
    max-height: 115px;
    max-width: 100%;
    object-fit: contain;
}

.pitem__name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-2);
}

/* 平台软件展示 */
.soft-show {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: center;
}

.soft-show__shot {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    transition: transform 0.4s ease;
}

.soft-show__shot:hover {
    transform: scale(1.02);
}

.soft-show--reverse .soft-show__shot {
    order: 2;
}

.soft-show h3 {
    font-size: 26px;
    margin-bottom: 14px;
}

.soft-show p {
    color: var(--text-muted);
    margin-bottom: 14px;
}

/* ==========================================================================
   解决方案
   ========================================================================== */
.sol-hero-card {
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    min-height: 340px;
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
    border: 1px solid var(--border);
}

.sol-hero-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 14, 28, 0.15) 0%, rgba(7, 14, 28, 0.92) 78%);
}

.sol-hero-card:hover::before {
    background: linear-gradient(180deg, rgba(245, 166, 35, 0.05) 0%, rgba(7, 14, 28, 0.92) 78%);
}

.sol-hero-card__body {
    position: relative;
    z-index: 2;
    padding: 30px 32px;
}

.sol-hero-card__body h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
}

.sol-hero-card__body p {
    color: #c2d2e8;
    font-size: 14.5px;
}

/* 方案明细 */
.sol-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 84px;
}

.sol-detail:last-child {
    margin-bottom: 0;
}

.sol-detail--reverse .sol-detail__media {
    order: 2;
}

.sol-detail__media img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}

.sol-detail__kicker {
    color: var(--cyan);
    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 600;
}

.sol-detail h3 {
    font-size: 30px;
    margin: 10px 0 16px;
}

.sol-detail > div > p {
    color: var(--text-muted);
    margin-bottom: 18px;
}

.sol-scenes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 22px;
    margin-top: 20px;
}

.sol-scenes li {
    position: relative;
    padding-left: 24px;
    font-size: 14.5px;
    color: var(--text-2);
}

.sol-scenes li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 9px;
    width: 14px;
    height: 8px;
    border-left: 2px solid var(--orange);
    border-bottom: 2px solid var(--orange);
    transform: rotate(-45deg);
}

/* 案例卡片 */
.case-card {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
    position: relative;
    display: block;
    background: var(--panel);
}

.case-card__img {
    height: 230px;
    overflow: hidden;
    position: relative;
}

.case-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-card:hover .case-card__img img {
    transform: scale(1.07);
}

.case-card__img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(7, 14, 28, 0.85) 100%);
}

.case-card__tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 100px;
    color: #1a1205;
    font-weight: 600;
    background: var(--grad-orange);
}

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

.case-card__body h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}

.case-card__body p {
    font-size: 13.5px;
    color: var(--text-muted);
}

/* 案例名称墙 */
.case-wall {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 36px;
}

.case-wall h4 {
    font-size: 16px;
    color: var(--orange-2);
    margin: 22px 0 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.case-wall li {
    font-size: 14px;
    color: var(--text-muted);
    padding: 4px 0 4px 16px;
    position: relative;
}

.case-wall li::before {
    content: "·";
    position: absolute;
    left: 4px;
    color: var(--cyan);
    font-weight: 700;
}

/* ==========================================================================
   发展历程
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
    padding-left: 8px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 6px;
    bottom: 6px;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, var(--orange), rgba(54, 198, 240, 0.4), transparent);
}

.timeline__item {
    position: relative;
    width: 50%;
    padding: 0 46px 44px;
}

.timeline__item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline__item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline__dot {
    position: absolute;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg);
    border: 3px solid var(--orange);
    box-shadow: 0 0 0 5px rgba(245, 166, 35, 0.15);
}

.timeline__item:nth-child(odd) .timeline__dot {
    right: -8px;
}

.timeline__item:nth-child(even) .timeline__dot {
    left: -8px;
}

.timeline__year {
    font-size: 30px;
    font-weight: 800;
    background: var(--grad-orange);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.timeline__title {
    font-size: 17px;
    font-weight: 700;
    margin: 2px 0 8px;
}

.timeline__text {
    color: var(--text-muted);
    font-size: 14px;
}

/* 文化卡 */
.culture-card {
    text-align: center;
    padding: 40px 28px;
}

.culture-card .card__icon {
    margin: 0 auto 18px;
}

.culture-card p {
    color: var(--text-muted);
    font-size: 14.5px;
}

/* 荣誉 */
.honor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.honor-grid .card {
    padding: 26px 20px;
    text-align: center;
}

.honor-grid .card b {
    display: block;
    font-size: 16px;
    margin-bottom: 6px;
}

.honor-grid .card span {
    font-size: 13px;
    color: var(--text-muted);
}

.honor-grid .card {
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.honor-grid .card .honor-more {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    color: var(--orange);
    opacity: 0.75;
    transition: opacity 0.3s ease;
}

.honor-grid .card:hover .honor-more {
    opacity: 1;
}

/* 资质荣誉页面 */
.cert-group {
    margin-bottom: 56px;
}

.cert-group:last-child {
    margin-bottom: 0;
}

.cert-group__title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 4px;
}

.cert-group__title::before {
    content: '';
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--orange), var(--orange-2));
}

.cert-group__desc {
    color: var(--text-muted);
    font-size: 13.5px;
    margin: 0 0 22px 14px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.cert {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
    overflow: hidden;
    transition: all 0.3s ease;
}

.cert:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.cert__img {
    height: 232px;
    padding: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f2f4f8;
}

.cert__img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: 0 2px 10px rgba(10, 25, 50, 0.18);
}

.cert__name {
    padding: 12px 12px 14px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-2);
    text-align: center;
    line-height: 1.5;
}

/* ==========================================================================
   CTA
   ========================================================================== */
.cta {
    position: relative;
    padding: 84px 0;
    text-align: center;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(245, 166, 35, 0.16), transparent 60%),
        var(--bg-2);
    border-top: 1px solid var(--border);
}

.cta h2 {
    font-size: 34px;
    font-weight: 700;
}

.cta p {
    color: var(--text-muted);
    margin: 14px auto 32px;
    max-width: 620px;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.footer {
    background: #050b16;
    border-top: 1px solid var(--border);
    padding: 70px 0 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.3fr 1.2fr;
    gap: 44px;
    padding-bottom: 50px;
}

.footer__brand img {
    height: 40px;
    margin-bottom: 18px;
}

.footer__brand p {
    color: var(--text-muted);
    font-size: 13.5px;
    margin-bottom: 16px;
}

.footer__qrcode {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}

.footer__qrcode img {
    width: 82px;
    height: 82px;
    padding: 5px;
    border-radius: 6px;
    background: #fff;
}

.footer__qrcode span {
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--text-muted);
}

.footer h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 1px;
}

.footer__nav li {
    margin-bottom: 10px;
}

.footer__nav a {
    color: var(--text-muted);
    font-size: 14px;
}

.footer__nav a:hover {
    color: var(--orange-2);
}

.footer__contact li {
    display: flex;
    gap: 10px;
    color: var(--text-muted);
    font-size: 13.5px;
    margin-bottom: 14px;
    line-height: 1.6;
}

.footer__contact li i {
    color: var(--orange);
    font-style: normal;
    flex-shrink: 0;
}

.footer__bottom {
    border-top: 1px solid rgba(122, 162, 224, 0.1);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12.5px;
    color: #5d7294;
}

.footer__beian {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
}

.footer__beian a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #5d7294;
}

.footer__beian a:hover {
    color: var(--orange-2);
}

.footer__beian img {
    width: auto;
    height: 15px;
}

.footer__credit {
    margin: 4px 0 0;
    text-align: center;
    font-size: 11.5px;
    line-height: 1.7;
    color: #4a5c78;
}

/* ==========================================================================
   入场动画
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal--delay-1 { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }
.reveal--delay-3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .hero__badge i, .scroll-hint::after { animation: none; }
}

/* ==========================================================================
   响应式 —— 平板
   ========================================================================== */
@media (max-width: 1024px) {
    .section { padding: 76px 0; }

    .hero__title { font-size: 44px; }

    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .honor-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .cert__img { height: 210px; }

    .about-split,
    .sol-detail,
    .soft-show { grid-template-columns: 1fr; gap: 40px; }

    .sol-detail--reverse .sol-detail__media,
    .soft-show--reverse .soft-show__shot { order: 0; }

    .series-panel__head { grid-template-columns: 1fr; }
    .series-panel__media { min-height: 240px; }

    .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }

    .case-wall { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   响应式 —— 手机
   ========================================================================== */
@media (max-width: 768px) {
    body { font-size: 15px; }

    .container { padding: 0 18px; }

    .section { padding: 60px 0; }

    .head__title { font-size: 26px; }
    .head { margin-bottom: 40px; }

    /* 导航 */
    .nav-toggle { display: block; }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 78%;
        max-width: 340px;
        height: 100vh;
        height: 100dvh;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: 4px;
        padding: 96px 28px 32px;
        background: rgba(8, 16, 32, 0.97);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-left: 1px solid var(--border);
        transition: right 0.35s ease;
        overflow-y: auto;
    }

    .nav.is-open { right: 0; }

    .nav__link {
        width: 100%;
        padding: 14px 10px;
        font-size: 17px;
        border-bottom: 1px solid rgba(122, 162, 224, 0.08);
    }

    .nav__link::after { display: none; }

    .nav__link.is-active {
        color: var(--orange-2);
    }

    .header__btn {
        display: none;
    }

    /* Hero */
    .hero { min-height: auto; padding: 130px 0 70px; }
    .hero .container { padding-top: 20px; }
    .hero__title { font-size: 32px; letter-spacing: 1px; }
    .hero__slogan { font-size: 16px; letter-spacing: 3px; }
    .hero__desc { font-size: 14.5px; }
    .hero__actions .btn { width: 100%; }
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 26px 18px;
        margin-top: 48px;
    }
    .hero__stat b { font-size: 30px; }
    .scroll-hint { display: none; }

    /* 内页横幅 */
    .page-banner { padding: 130px 0 56px; }
    .page-banner__title { font-size: 28px; letter-spacing: 2px; }

    /* 简介 */
    .about-split__media .floating { display: none; }
    .about-split__points { grid-template-columns: 1fr; }

    .stat-bar__grid { grid-template-columns: repeat(2, 1fr); }
    .stat-bar__item { padding: 32px 12px; }
    .stat-bar__item b { font-size: 32px; }
    .stat-bar__item:nth-child(3)::before { display: none; }

    /* 网格 */
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

    /* 架构 */
    .arch__layer { grid-template-columns: 1fr; gap: 8px; }
    .arch__label { padding: 10px; }
    .spec-list { grid-template-columns: 1fr; }

    /* 产品面板 */
    .series-panel__info { padding: 26px 22px 10px; }
    .series-panel__info h3 { font-size: 22px; }
    .series-panel__items { grid-template-columns: repeat(2, 1fr); padding: 24px 22px 28px; }
    .series-panel__items--cols4 { grid-template-columns: repeat(2, 1fr); }

    /* 方案 */
    .sol-detail { gap: 28px; margin-bottom: 60px; }
    .sol-detail h3 { font-size: 23px; }
    .sol-scenes { grid-template-columns: 1fr; }
    .case-wall { grid-template-columns: 1fr; }
    .case-card__img { height: 200px; }

    /* 历程 */
    .timeline::before { left: 8px; }
    .timeline__item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding: 0 0 36px 40px;
    }
    .timeline__dot { left: 0 !important; right: auto !important; }

    /* CTA / 页脚 */
    .cta h2 { font-size: 25px; }
    .footer__grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 34px; }
    .footer__bottom { justify-content: center; text-align: center; }

    .tech-band__img { height: 560px; }
    .tech-band__img::before {
        background: linear-gradient(180deg, rgba(7, 14, 28, 0.55) 0%, rgba(7, 14, 28, 0.94) 60%);
    }
    .tech-band__inner h2 { font-size: 25px; }
}

@media (max-width: 420px) {
    .hero__title { font-size: 27px; }
    .series-panel__items { grid-template-columns: 1fr; }
    .series-panel__items--cols4 { grid-template-columns: 1fr; }
    .hero__stats { grid-template-columns: 1fr 1fr; }
}