/* ==========================================================
   甘肃点诺科技有限公司 - 企业官网样式表
   Design: 深色科技风 · 青辉与靛紫渐变 · 思源黑体系排版
   ========================================================== */

/* ---------- 基础重置与变量 ---------- */
:root {
    --primary: #2dd4bf;
    --primary-dark: #14b8a6;
    --secondary: #a78bfa;
    --accent: #38bdf8;
    --accent-warm: #fbbf24;
    --bg-dark: #070b14;
    --bg-section: #0c1222;
    --bg-card: #121a2c;
    --bg-card-hover: #172033;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(45, 212, 191, 0.12);
    --gradient: linear-gradient(135deg, #2dd4bf 0%, #38bdf8 45%, #a78bfa 100%);
    --gradient-accent: linear-gradient(135deg, #38bdf8, #818cf8);
    --gradient-subtle: linear-gradient(180deg, rgba(45, 212, 191, 0.06) 0%, transparent 42%);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 48px rgba(45, 212, 191, 0.12);
    --transition: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
    /* 设计可视参考最大约 1920，内容区随屏宽阶梯放大 */
    --viewport-design-max: 1920px;
    --container-max: 100%;
    --bp-desktop-min: 1024px;
    --header-height: 72px;
    --radius: 14px;
    --radius-sm: 9px;
    --radius-pill: 999px;
    --font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --leading-tight: 1.25;
    --leading-body: 1.75;
    /* 增强设计令牌 · 呼吸感与层次 */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 20px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 72px;
    --elevation-1: 0 4px 24px rgba(0, 0, 0, 0.22);
    --elevation-2: 0 12px 40px rgba(0, 0, 0, 0.32);
    --elevation-glow: 0 0 0 1px rgba(45, 212, 191, 0.08), 0 16px 48px rgba(0, 0, 0, 0.28);
    --surface-glass: rgba(18, 26, 44, 0.72);
    --line-subtle: rgba(255, 255, 255, 0.06);
    --line-accent: rgba(45, 212, 191, 0.18);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    background-image: var(--gradient-subtle),
        radial-gradient(ellipse 100% 60% at 50% -20%, rgba(56, 189, 248, 0.06), transparent);
    color: var(--text-primary);
    line-height: var(--leading-body);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 蒙层仅在移动端抽屉时使用；桌面端隐藏，避免占位或遮挡点击 */
.menu-overlay {
    display: none;
}

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

ul {
    list-style: none;
}

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

.container {
    box-sizing: border-box;
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: clamp(16px, 2.75vw, 48px);
    padding-right: clamp(16px, 2.75vw, 48px);
}

/* 宽屏下内容区与 --container-max 同步（不高于视口可用宽度） */
@media (min-width: 1024px) {
    :root {
        --container-max: 1200px;
    }
}

@media (min-width: 1920px) {
    :root {
        --container-max: 1440px;
    }
}

@media (min-width: 2560px) {
    :root {
        --container-max: 1600px;
    }
}

@media (min-width: 1024px) {
    .container {
        min-width: 0;
    }
}

/* ---------- 渐变文字 ---------- */
.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--gradient);
    color: #0f172a;
    box-shadow: 0 4px 22px rgba(45, 212, 191, 0.28);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(45, 212, 191, 0.35);
    filter: brightness(1.06);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(45, 212, 191, 0.08);
    transform: translateY(-2px);
}

.section-actions {
    text-align: center;
    margin-top: clamp(32px, 5vw, 48px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ---------- Section 通用 ---------- */
.section {
    padding: 76px 0;
    position: relative;
}

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

.section-header {
    text-align: center;
    margin-bottom: 44px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    background: rgba(45, 212, 191, 0.08);
    color: var(--primary);
    border: 1px solid rgba(45, 212, 191, 0.22);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.divider {
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 0 auto 20px;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 38rem;
    margin: 0 auto;
}

.section-title-lg {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 900;
    margin-bottom: 20px;
    line-height: var(--leading-tight);
}

/* ---------- 滚动渐入动画 ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================
   导航栏
   ========================================================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
    background: rgba(7, 11, 20, 0.35);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(45, 212, 191, 0.08);
}

#header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10,14,23,0.6) 0%, transparent 100%);
    pointer-events: none;
    z-index: -1;
}

#header.scrolled {
    background: rgba(7, 11, 20, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow), 0 1px 0 rgba(45, 212, 191, 0.12);
}

#header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 10px;
    font-size: 1.2rem;
    color: #fff;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
    display: none;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(45, 212, 191, 0.1);
}

/* 移动端抽屉专属：底部立即咨询（桌面端不占位） */
.nav-menu > .nav-menu-cta-wrap {
    display: none;
}

/* 抽屉标题行：仅 ≤1023 时由下方媒体查询设为 flex */
.menu-header {
    display: none;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.bar {
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================
   Hero 主视觉
   ========================================================== */
#hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* 首页粒子背景不拦截指针，避免盖住轮播与按钮的可点区域 */
#hero.hero--carousel #particle-canvas {
    pointer-events: none;
}

/* 大鱼式氛围光晕（轻量 orb，不抢眼） */
.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(64px);
    opacity: 0.38;
    pointer-events: none;
    z-index: 2;
}
.hero-blob--a {
    width: min(48vw, 360px);
    height: min(48vw, 360px);
    background: rgba(45, 212, 191, 0.45);
    top: 10%;
    left: -6%;
    animation: hero-float 16s ease-in-out infinite;
}
.hero-blob--b {
    width: min(42vw, 300px);
    height: min(42vw, 300px);
    background: rgba(167, 139, 250, 0.35);
    bottom: 8%;
    right: -8%;
    animation: hero-float 18s ease-in-out infinite reverse;
}
.hero-blob--c {
    width: min(36vw, 240px);
    height: min(36vw, 240px);
    background: rgba(56, 189, 248, 0.3);
    top: 40%;
    right: 28%;
    animation: hero-float 14s ease-in-out infinite;
    animation-delay: -5s;
}

@keyframes hero-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    40% { transform: translate(2%, -3%) scale(1.04); }
    70% { transform: translate(-2%, 2%) scale(0.97); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 72% 18%, rgba(45, 212, 191, 0.06) 0%, transparent 45%),
        radial-gradient(ellipse at center,
        rgba(10, 14, 23, 0.28) 0%,
        rgba(10, 14, 23, 0.82) 60%,
        var(--bg-dark) 100%
    );
    z-index: 2;
}

.hero-wrap-inner {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(18px, 4vw, 28px);
    padding-bottom: clamp(72px, 12vh, 100px);
}

.hero-split {
    display: grid;
    gap: clamp(32px, 5vw, 52px);
    align-items: center;
}

.hero-main {
    text-align: center;
}

.hero-content {
    max-width: 44rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--accent);
    letter-spacing: 0.12em;
    margin-bottom: 22px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: rgba(45, 212, 191, 0.08);
    border: 1px solid rgba(45, 212, 191, 0.2);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

.hero-badge i {
    font-size: 0.85rem;
    opacity: 0.9;
}

.hero-title {
    font-size: clamp(2.2rem, 6vw, 4.2rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.5s forwards;
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin: 0 auto 36px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.7s forwards;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.9s forwards;
}

.btn-hero-solid {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.96rem;
    background: var(--gradient);
    color: #081018;
    box-shadow: 0 12px 32px rgba(45, 212, 191, 0.25);
    transition: var(--transition);
}

.btn-hero-solid:hover {
    transform: translateY(-3px);
    filter: brightness(1.06);
}

.btn-hero-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 26px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.96rem;
    color: var(--text-primary);
    border: 1px solid rgba(248, 250, 252, 0.28);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.btn-hero-ghost:hover {
    background: rgba(45, 212, 191, 0.1);
    border-color: rgba(45, 212, 191, 0.45);
    transform: translateY(-2px);
}

/* 右侧主视觉块（参考大鱼 hero-visual） */
.hero-visual {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
}

.hero-visual-frame {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(18, 26, 44, 0.55);
    box-shadow:
        0 24px 60px rgba(0, 0, 0, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.hero-visual-glow {
    position: absolute;
    inset: -20%;
    background: conic-gradient(from 210deg at 50% 50%, rgba(45, 212, 191, 0.12), rgba(129, 140, 248, 0.1), rgba(56, 189, 248, 0.1), rgba(45, 212, 191, 0.12));
    opacity: 0.45;
    animation: hero-spin-slow 32s linear infinite;
    pointer-events: none;
}

@keyframes hero-spin-slow {
    to { transform: rotate(360deg); }
}

.hero-visual-core {
    position: absolute;
    inset: 8%;
    border-radius: calc(var(--radius) - 4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background: linear-gradient(160deg, rgba(45, 212, 191, 0.08), rgba(7, 11, 20, 0.85));
    border: 1px solid rgba(45, 212, 191, 0.12);
    z-index: 1;
}

.hero-visual-core i {
    font-size: clamp(2.5rem, 8vw, 3.2rem);
    color: var(--primary);
    opacity: 0.85;
}

.hero-visual-core span {
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.hero-visual-meta {
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    z-index: 2;
}

.hero-meta-chip {
    font-size: 0.67rem;
    line-height: 1.35;
    padding: 8px 10px;
    border-radius: 10px;
    background: rgba(4, 6, 12, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    backdrop-filter: blur(10px);
    max-width: 48%;
}

.hero-meta-chip strong {
    display: block;
    font-size: 0.71rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

@media (min-width: 1024px) {
    .hero-split {
        grid-template-columns: 1fr 1fr;
        gap: clamp(32px, 4vw, 56px);
    }
    .hero-main {
        text-align: left;
    }
    .hero-main .hero-desc {
        margin-left: 0;
    }
    .hero-main .hero-btns {
        justify-content: flex-start;
    }
    .hero-content {
        margin-left: 0;
        margin-right: 0;
    }
    .hero-visual {
        margin-right: 0;
        margin-left: auto;
    }
}

@media (max-width: 1023px) {
    .hero-visual {
        display: none;
    }
}

/* ==========================================================
   Hero · 首页五屏轮播（大气交叉淡入 + 背景景深 + 文案错峰入场）
   ========================================================== */

#hero.hero--carousel {
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
}

.hero-carousel-root {
    position: relative;
    z-index: 4;
    flex: 1 1 auto;
    width: 100%;
    align-self: stretch;
    display: flex;
    min-height: 0;
    padding-top: calc(var(--header-height) + 8px);
    box-sizing: border-box;
}

.hero-carousel-wrap {
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 首页 Hero：外层 100vw 铺满；内层幻灯文案由 .hero-split 对齐 .container */
.hero-wrap-inner.hero-carousel-wrap {
    max-width: none;
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
}

.hero-carousel {
    position: relative;
    width: 100%;
    outline: none;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.hero-carousel__viewport {
    position: relative;
    width: 100%;
    flex: 1 1 auto;
    min-height: min(840px, 82vh);
    overflow: visible;
    touch-action: pan-y pinch-zoom;
    cursor: grab;
    user-select: none;
    perspective: 1280px;
    perspective-origin: 50% 42%;
    transform-style: preserve-3d;
}

.hero-carousel__viewport a,
.hero-carousel__viewport button {
    user-select: auto;
}

.hero-carousel__viewport:active {
    cursor: grabbing;
}

@media (max-width: 1023px) {
    .hero-carousel__viewport {
        min-height: min(620px, 88svh);
    }
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    z-index: 1;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    transform-origin: 50% 50%;
    transform: rotateY(72deg) scale(0.78) translateX(14%) translateZ(-260px);
    filter: blur(10px) brightness(0.55) saturate(0.85);
    pointer-events: none;
    will-change: transform, opacity, filter;
    transition:
        opacity 0.55s ease,
        visibility 0s linear 0.55s;
}

.hero-slide.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: rotateY(0deg) scale(1) translateX(0) translateZ(0);
    filter: blur(0) brightness(1) saturate(1);
    z-index: 3;
    transition:
        opacity 0.35s ease,
        visibility 0s;
}

.hero-slide.is-active.is-entering {
    z-index: 5;
    animation: heroSlideEnter 1.18s cubic-bezier(0.22, 1, 0.28, 1) forwards;
}

.hero-slide.is-active.is-entering.is-dir-next {
    animation-name: heroSlideEnterNext;
}

.hero-slide.is-active.is-entering.is-dir-prev {
    animation-name: heroSlideEnterPrev;
}

.hero-slide.is-leaving {
    visibility: visible;
    pointer-events: none;
    z-index: 4;
    animation: heroSlideLeave 1.05s cubic-bezier(0.55, 0, 0.85, 0.36) forwards;
}

.hero-slide.is-leaving.is-dir-next {
    animation-name: heroSlideLeaveNext;
}

.hero-slide.is-leaving.is-dir-prev {
    animation-name: heroSlideLeavePrev;
}

@keyframes heroSlideEnterNext {
    0% {
        opacity: 0;
        transform: rotateY(-78deg) scale(0.76) translateX(18%) translateZ(-280px);
        filter: blur(14px) brightness(0.5);
    }
    45% {
        opacity: 1;
        filter: blur(2px) brightness(0.92);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) scale(1) translateX(0) translateZ(0);
        filter: blur(0) brightness(1) saturate(1);
    }
}

@keyframes heroSlideEnterPrev {
    0% {
        opacity: 0;
        transform: rotateY(78deg) scale(0.76) translateX(-18%) translateZ(-280px);
        filter: blur(14px) brightness(0.5);
    }
    45% {
        opacity: 1;
        filter: blur(2px) brightness(0.92);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) scale(1) translateX(0) translateZ(0);
        filter: blur(0) brightness(1) saturate(1);
    }
}

@keyframes heroSlideLeaveNext {
    0% {
        opacity: 1;
        transform: rotateY(0deg) scale(1) translateX(0) translateZ(0);
        filter: blur(0) brightness(1);
    }
    100% {
        opacity: 0;
        transform: rotateY(68deg) scale(0.8) translateX(-16%) translateZ(-240px);
        filter: blur(12px) brightness(0.45) saturate(0.7);
    }
}

@keyframes heroSlideLeavePrev {
    0% {
        opacity: 1;
        transform: rotateY(0deg) scale(1) translateX(0) translateZ(0);
        filter: blur(0) brightness(1);
    }
    100% {
        opacity: 0;
        transform: rotateY(-68deg) scale(0.8) translateX(16%) translateZ(-240px);
        filter: blur(12px) brightness(0.45) saturate(0.7);
    }
}

.hero-carousel__viewport.is-transitioning::before {
    opacity: 1;
    animation: heroFlashSweep 1.05s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-carousel__viewport::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 18;
    pointer-events: none;
    opacity: 0;
    background:
        linear-gradient(
            118deg,
            transparent 0%,
            rgba(45, 212, 191, 0.03) 38%,
            rgba(167, 139, 250, 0.14) 50%,
            rgba(56, 189, 248, 0.06) 62%,
            transparent 100%
        );
    mix-blend-mode: screen;
}

@keyframes heroFlashSweep {
    0% {
        opacity: 0;
        transform: translateX(-30%) skewX(-8deg);
    }
    35% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(30%) skewX(-8deg);
    }
}

.hero-slide__bg {
    position: absolute;
    inset: -8%;
    z-index: 0;
    background:
        radial-gradient(circle at 50% 50%, hsla(var(--slide-hue, 170), 70%, 45%, 0.14), transparent 52%),
        var(--slide-mesh, transparent);
    opacity: 0.92;
}

.hero-slide__grain {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    mix-blend-mode: overlay;
    pointer-events: none;
}

.hero-slide .hero-split {
    position: relative;
    z-index: 4;
    width: 100%;
}

/* Hero 幻灯内容区对齐整站容器宽度 */
.hero-carousel .hero-carousel__viewport .hero-split {
    box-sizing: border-box;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: clamp(16px, 2.75vw, 48px);
    padding-right: clamp(16px, 2.75vw, 48px);
}

@media (min-width: 1200px) {
    .hero-carousel .hero-carousel__viewport .hero-split {
        min-width: min(var(--container-max), calc(100vw - 48px));
    }
}

.hero-carousel .hero-visual-frame--carousel .hero-visual-glow {
    animation-duration: 36s;
}

.hero-visual-accent--cyan .hero-visual-core {
    border-color: rgba(45, 212, 191, 0.22);
    background: linear-gradient(160deg, rgba(45, 212, 191, 0.12), rgba(7, 11, 20, 0.88));
}

.hero-visual-accent--blue .hero-visual-core i {
    color: #38bdf8;
}

.hero-visual-accent--blue .hero-visual-core {
    border-color: rgba(56, 189, 248, 0.25);
    background: linear-gradient(160deg, rgba(56, 189, 248, 0.1), rgba(7, 11, 20, 0.88));
}

.hero-visual-accent--violet .hero-visual-core i {
    color: #a78bfa;
}

.hero-visual-accent--violet .hero-visual-core {
    border-color: rgba(167, 139, 250, 0.28);
    background: linear-gradient(160deg, rgba(167, 139, 250, 0.12), rgba(7, 11, 20, 0.88));
}

.hero-visual-accent--teal .hero-visual-core i {
    color: #34d399;
}

.hero-visual-accent--teal .hero-visual-core {
    border-color: rgba(52, 211, 153, 0.24);
    background: linear-gradient(160deg, rgba(52, 211, 153, 0.1), rgba(7, 11, 20, 0.88));
}

.hero-visual-accent--indigo .hero-visual-core i {
    color: #818cf8;
}

.hero-visual-accent--indigo .hero-visual-core {
    border-color: rgba(129, 140, 248, 0.26);
    background: linear-gradient(160deg, rgba(129, 140, 248, 0.12), rgba(7, 11, 20, 0.88));
}

.gradient-text-soft {
    background: linear-gradient(105deg, #5eead4 0%, #a78bfa 55%, #38bdf8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-carousel .hero-slide-title .hero-title-line.gradient-text-soft {
    font-size: clamp(2rem, 5vw, 3.6rem);
    letter-spacing: -0.03em;
    line-height: 1.08;
}

.hero-carousel .hero-slide-title .hero-title-line--mid {
    font-size: clamp(1.45rem, 3.9vw, 2.8rem);
    font-weight: 800;
    color: rgba(248, 250, 252, 0.96);
    letter-spacing: -0.035em;
    line-height: 1.22;
}

.hero-carousel .hero-slide-title .hero-title-line--sub {
    font-size: clamp(0.88rem, 1vw, 1rem);
    font-weight: 500;
    letter-spacing: 0.06em;
    color: rgba(203, 213, 225, 0.75);
}

.hero-visual-frame--photo-placeholder {
    overflow: hidden;
    background: radial-gradient(circle at 28% 18%, hsla(var(--slide-hue, 168), 72%, 50%, 0.16), transparent 56%),
        linear-gradient(165deg, rgba(8, 12, 22, 0.96), rgba(16, 24, 44, 0.88));
    border: 1px solid rgba(248, 250, 252, 0.1);
    display: flex;
    align-items: stretch;
}

.hero-photo-placeholder {
    position: absolute;
    inset: 0;
    min-height: 0;
    height: auto;
    flex: 1;
    padding: clamp(14px, 2.5vw, 22px);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    background:
        radial-gradient(circle at 78% 12%, hsla(var(--slide-hue, 168), 82%, 60%, 0.12), transparent 44%),
        linear-gradient(-32deg, rgba(45, 212, 191, 0.09) 0%, transparent 40%),
        repeating-linear-gradient(
            -40deg,
            rgba(148, 163, 184, 0.04) 0 12px,
            transparent 12px 24px
        );
}

.hero-photo-placeholder__hint {
    font-size: 0.71rem;
    line-height: 1.52;
    color: rgba(241, 245, 249, 0.46);
    max-width: 16rem;
    border-left: 2px solid rgba(45, 212, 191, 0.35);
    padding-left: 10px;
}

.hero-desc-strong {
    color: var(--primary);
    font-weight: 600;
}

.hero-slide:not(.is-active):not(.is-leaving) .hero-stagger > .hero-badge,
.hero-slide:not(.is-active):not(.is-leaving) .hero-stagger > .hero-title,
.hero-slide:not(.is-active):not(.is-leaving) .hero-stagger > .hero-slide-desc,
.hero-slide:not(.is-active):not(.is-leaving) .hero-stagger .hero-title-line,
.hero-slide:not(.is-active):not(.is-leaving) .hero-slide .hero-btns > a,
.hero-slide:not(.is-active):not(.is-leaving) .hero-visual-frame--carousel {
    animation: none !important;
    opacity: 0;
}

.hero-stagger > .hero-badge,
.hero-stagger > .hero-title,
.hero-stagger > .hero-slide-desc,
.hero-stagger .hero-title-line,
.hero-slide .hero-btns > a,
.hero-slide.is-active .hero-visual-frame--carousel {
    opacity: 0;
    transform: translate3d(0, 32px, 0) rotateX(-18deg) scale(0.94);
    transform-origin: left center;
    filter: blur(6px);
    will-change: transform, opacity, filter;
}

.hero-stagger > .hero-btns {
    opacity: 1;
    transform: none;
    filter: none;
}

.hero-slide.is-active.hero-content-ready .hero-stagger > .hero-badge {
    animation: heroStaggerIn 0.92s cubic-bezier(0.16, 1, 0.28, 1) 0.08s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger .hero-title-line:nth-of-type(1) {
    animation: heroStaggerIn 0.95s cubic-bezier(0.16, 1, 0.28, 1) 0.2s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger .hero-title-line:nth-of-type(2) {
    animation: heroStaggerIn 0.95s cubic-bezier(0.16, 1, 0.28, 1) 0.36s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger .hero-title-line:nth-of-type(3) {
    animation: heroStaggerIn 0.95s cubic-bezier(0.16, 1, 0.28, 1) 0.52s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger > .hero-slide-desc {
    animation: heroStaggerIn 0.98s cubic-bezier(0.16, 1, 0.28, 1) 0.68s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger .hero-btns > a:nth-child(1) {
    animation: heroStaggerBtn 0.88s cubic-bezier(0.34, 1.45, 0.64, 1) 0.86s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-stagger .hero-btns > a:nth-child(2) {
    animation: heroStaggerBtn 0.88s cubic-bezier(0.34, 1.45, 0.64, 1) 1.02s forwards;
}

.hero-slide.is-active.hero-content-ready .hero-visual-frame--carousel {
    animation: heroVisualIn 1.15s cubic-bezier(0.16, 1, 0.28, 1) 0.42s forwards;
}

@keyframes heroStaggerIn {
    0% {
        opacity: 0;
        transform: translate3d(0, 36px, 0) rotateX(-22deg) scale(0.92);
        filter: blur(8px);
    }
    55% {
        filter: blur(0);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) rotateX(0) scale(1);
        filter: blur(0);
    }
}

@keyframes heroStaggerBtn {
    0% {
        opacity: 0;
        transform: translate3d(0, 24px, 0) scale(0.88);
        filter: blur(4px);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
        filter: blur(0);
    }
}

@keyframes heroVisualIn {
    0% {
        opacity: 0;
        transform: perspective(900px) rotateY(-16deg) translateX(28px) scale(0.9);
        filter: blur(8px);
    }
    100% {
        opacity: 1;
        transform: perspective(900px) rotateY(0) translateX(0) scale(1);
        filter: blur(0);
    }
}


@keyframes heroKbDrift {
    0% {
        transform: scale(1.02) translate(0%, 0%);
    }
    100% {
        transform: scale(1.09) translate(-1.8%, -1.2%);
    }
}

.hero-slide.is-active .hero-slide__bg {
    animation: heroKbDrift 22s ease-in-out infinite alternate;
}

.hero-slide:nth-child(even).is-active .hero-slide__bg {
    animation-name: heroKbDriftReverse;
}

@keyframes heroKbDriftReverse {
    0% {
        transform: scale(1.04) translate(0%, 0%);
    }
    100% {
        transform: scale(1.1) translate(1.5%, 1%);
    }
}

.hero-carousel__chrome {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    position: relative;
    padding-bottom: 6px;
    flex-shrink: 0;
}

.hero-carousel__btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(248, 250, 252, 0.18);
    background: rgba(8, 12, 22, 0.45);
    color: rgba(226, 232, 240, 0.85);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition:
        transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
        background 0.25s ease,
        border-color 0.25s ease,
        box-shadow 0.35s ease;
    backdrop-filter: blur(12px);
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* 箭头固定于幻灯视区纵向居中、贴左右（视区即 hero 核心区） */
.hero-carousel__btn--floating {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 22;
}

.hero-carousel__btn--floating.hero-carousel__btn--prev {
    left: clamp(10px, 3vw, 28px);
}

.hero-carousel__btn--floating.hero-carousel__btn--next {
    right: clamp(10px, 3vw, 28px);
}

.hero-carousel__btn:hover {
    border-color: rgba(45, 212, 191, 0.45);
    box-shadow:
        0 12px 36px rgba(45, 212, 191, 0.12),
        0 0 0 1px rgba(45, 212, 191, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.hero-carousel__btn--floating:hover {
    transform: translateY(-50%) translateY(-2px) scale(1.04);
}

.hero-carousel__btn:not(.hero-carousel__btn--floating):hover {
    transform: translateY(-2px) scale(1.04);
}

.hero-carousel__btn:active {
    transform: translateY(0) scale(0.97);
}

.hero-carousel__btn--floating:active {
    transform: translateY(-50%) scale(0.97);
}

.hero-carousel__dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.hero-carousel__dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: none;
    padding: 0;
    background: rgba(148, 163, 184, 0.25);
    cursor: pointer;
    transition:
        transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
        width 0.4s cubic-bezier(0.22, 1, 0.36, 1),
        background 0.35s ease,
        box-shadow 0.35s ease;
}

.hero-carousel__dot:hover {
    transform: scale(1.15);
    background: rgba(45, 212, 191, 0.4);
}

.hero-carousel__dot.is-active {
    width: 38px;
    background: linear-gradient(90deg, var(--primary), #a78bfa);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.35);
}

.hero-carousel__progress-wrap {
    position: relative;
    width: min(420px, 88vw);
    height: 2px;
    border-radius: 2px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.06);
}

.hero-carousel__progress {
    height: 100%;
    width: 100%;
    transform-origin: left center;
    transform: scaleX(0);
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.5), rgba(167, 139, 250, 0.6));
}

@keyframes heroCarouselProgress {
    to {
        transform: scaleX(1);
    }
}

.hero-carousel .hero-main .hero-content {
    max-width: 46rem;
}

/* 抵消全局 Hero 渐入，改由幻灯内错峰关键帧接管 */
.hero-carousel .hero-slide .hero-title {
    opacity: 1;
    animation: none;
}

@media (prefers-reduced-motion: reduce) {
    .hero-carousel__viewport {
        perspective: none;
    }

    .hero-carousel__viewport::before {
        display: none;
    }

    .hero-slide,
    .hero-slide.is-active,
    .hero-slide.is-leaving,
    .hero-slide.is-entering {
        transition-duration: 0.35s !important;
        transform: none !important;
        filter: none !important;
        animation: none !important;
    }

    .hero-stagger > *,
    .hero-stagger .hero-title-line,
    .hero-slide .hero-btns > a,
    .hero-slide.is-active .hero-visual-frame--carousel,
    .hero-slide.is-active.hero-content-ready .hero-stagger > *,
    .hero-slide.is-active.hero-content-ready .hero-stagger .hero-title-line,
    .hero-slide.is-active.hero-content-ready .hero-stagger .hero-btns > a {
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
        animation: none !important;
    }

    .hero-slide.is-active .hero-slide__bg {
        animation: none;
    }

    .hero-carousel__progress {
        animation: none !important;
    }
}


/* ---------- Hero 文字分散集中动画 ---------- */
.hero-title-wrap {
    position: relative;
    display: inline-block;
    min-height: 1.2em;
}
.hero-title-wrap .char {
    display: inline-block;
    opacity: 0;
    transform: scale(0.3) rotate(8deg);
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
                transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: transform, opacity;
}
.hero-title-wrap .char.visible {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}
.hero-title-wrap .char-space {
    display: inline-block;
    width: 0.3em;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 2px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.2s forwards;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s ease infinite;
}

@keyframes scrollWheel {
    0%   { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(16px); opacity: 0; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================
   关于我们
   ========================================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 44px;
    align-items: start;
}

.about-content .about-text {
    grid-column: 1;
    grid-row: 1;
}

.about-content .about-image {
    grid-column: 2;
    grid-row: 1;
    align-self: end;
}

.about-content .about-stats {
    grid-column: 1 / -1;
    grid-row: 2;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

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

.about-text .btn {
    margin-top: 10px;
}

.about-content--stacked {
    grid-template-columns: 1fr;
}

.about-content--stacked .about-text {
    grid-column: 1;
    grid-row: 1;
}

.about-content--stacked .about-stats {
    grid-column: 1;
    grid-row: 2;
}

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

@media (max-width: 1024px) {
    .about-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 520px) {
    .about-stats {
        grid-template-columns: minmax(0, 1fr);
    }
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    display: block;
    font-size: clamp(1.75rem, 2.9vw, 2.35rem);
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==========================================================
   业务范围
   ========================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
    background: var(--bg-card-hover);
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.6rem;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--gradient);
    color: #fff;
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ==========================================================
   团队优势
   ========================================================== */
.advantages-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 36px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
}

.advantage-item:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateX(8px);
    box-shadow: var(--shadow-glow);
}

.advantage-number {
    font-size: 2.5rem;
    font-weight: 900;
    font-style: italic;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 60px;
    line-height: 1;
}

.advantage-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ==========================================================
   联系我们
   ========================================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: start;
}

.contact-map-section {
    padding: 0 0 60px;
    background: var(--bg-dark);
}

.map-embed-placeholder {
    min-height: 260px;
}

.map-embed-placeholder > i {
    font-size: 2.75rem;
    opacity: 0.5;
    margin-bottom: 12px;
    color: var(--primary);
}

.map-embed-placeholder > span {
    font-size: 0.88rem;
    letter-spacing: 0.06em;
    font-weight: 600;
    color: var(--text-secondary);
}

.map-embed-placeholder > small {
    display: block;
    font-size: 0.72rem;
    line-height: 1.55;
    margin-top: 10px;
    max-width: 22rem;
    text-align: center;
    color: var(--text-muted);
    opacity: 0.85;
}

@media (max-width: 1023px) {
    .contact-page-grid { grid-template-columns: 1fr; }

    .contact-aside-panel {
        min-height: min(380px, 58vh);
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
}

.contact-detail h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-detail p,
.contact-detail a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-detail a:hover {
    color: var(--primary);
}

/* 联系表单 */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px;
}

.contact-form h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: rgba(255, 255, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================================
   页脚
   ========================================================== */
#footer {
    background: linear-gradient(180deg, #050815 0%, #04060d 100%);
    padding: 60px 0 0;
    border-top: 1px solid var(--border-color);
}

.footer-contact-list {
    gap: 8px 12px !important;
}

.footer-contact-line {
    grid-column: 1 / -1;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.55;
}

.footer-contact-line a {
    color: var(--text-muted);
}

.footer-contact-line a:hover {
    color: var(--primary);
}

.footer-contact-line i {
    flex-shrink: 0;
    width: 18px;
    margin-top: 3px;
    color: var(--primary);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Footer 导航格：快速导航 / 业务领域（双列排版，留白更易读） */
.footer-nav-grid {
    display: grid;
    padding: 0;
    margin: 0;
    list-style: none;
}

.footer-nav-grid:not(.footer-contact-list) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.42rem 0.95rem;
    font-size: 0.8125rem;
    line-height: 1.35;
    text-align: center;
}

.footer-nav-grid:not(.footer-contact-list) li {
    margin: 0;
    break-inside: avoid;
}

.footer-nav-grid:not(.footer-contact-list) li a {
    display: block;
    padding: 0.1rem 0;
    font-size: inherit;
    line-height: inherit;
}

.footer-nav-grid:not(.footer-contact-list) li a:hover {
    padding-left: 0;
}

.footer-nav-grid.footer-contact-list {
    grid-template-columns: 1fr;
}

.footer-nav-grid.footer-contact-list li {
    margin-bottom: 0;
    break-inside: avoid;
}

@media (min-width: 1024px) {
    .footer-nav-grid:not(.footer-contact-list) {
        text-align: left;
        font-size: 0.875rem;
        gap: 0.36rem 1rem;
        line-height: 1.35;
    }
}

.footer-logo {
    font-size: 1.3rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo i {
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 360px;
}

.footer-social {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}

.footer-qr-slot {
    position: relative;
    display: inline-flex;
}

/* 透明「桥接」热区：避免图标与二维码之间断层导致 :hover 丢失 */
.footer-qr-slot::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 100%;
    width: 88px;
    height: calc(260px + 0.75rem);
    transform: translateX(-50%);
    z-index: 1162;
    background: transparent;
}

.footer-qr-pop {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    padding: 10px;
    border-radius: 12px;
    background: rgba(9, 12, 20, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.18);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
        opacity 0.22s ease,
        transform 0.22s ease,
        visibility 0.22s;
    z-index: 1165;
    width: max-content;
    max-width: min(276px, 88vw);
}

.footer-qr-pop img {
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    background: #0f172a;
}

.footer-qr-pop__label {
    display: block;
    margin-top: 10px;
    font-size: 0.73rem;
    color: var(--text-muted);
    text-align: center;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.footer-qr-slot:hover .footer-qr-pop,
.footer-qr-slot:focus-within .footer-qr-pop {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

@media (max-width: 620px) {
    .footer-qr-slot::before {
        left: auto;
        right: 0;
        transform: none;
        width: 100px;
    }

    .footer-qr-pop {
        left: auto;
        right: 0;
        transform: translateY(6px);
    }

    .footer-qr-slot:hover .footer-qr-pop,
    .footer-qr-slot:focus-within .footer-qr-pop {
        transform: translateY(0);
    }
}

.social-link--mp:hover {
    border-color: rgba(167, 139, 250, 0.4);
}

.social-link--mp {
    transition: var(--transition);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient);
    color: #fff;
    transform: translateY(-2px);
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links ul li a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-icp a {
    color: var(--text-muted);
}

.footer-icp a:hover {
    color: var(--primary);
}

/* ==========================================================
   回到顶部
   ========================================================== */
.back-to-top {
    position: fixed;
    bottom: 36px;
    right: 36px;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: var(--gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 22px rgba(45, 212, 191, 0.3);
    border: 1px solid rgba(255,255,255,0.1);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-6px) scale(1.08);
    box-shadow: 0 12px 36px rgba(45, 212, 191, 0.4);
}

.back-to-top:active {
    transform: scale(0.92);
}

@media (max-width: 1023px) {
    .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 1rem; border-radius: 12px; }
}

/* ==========================================================
   响应式设计
   ========================================================== */



/* ==========================================================
   多页面增强样式 - 追加部分
   ========================================================== */

/* ---------- 更多动画关键帧 ---------- */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}
@keyframes floatSlow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}
@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.1); }
    50% { box-shadow: 0 0 60px rgba(59, 130, 246, 0.3); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes progressBar {
    from { width: 0; }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---------- 浮动装饰 ---------- */
.float-decorations {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; overflow: hidden; z-index: 0;
}
.float-shape { position: absolute; border-radius: 50%; opacity: 0.06; }
.float-shape-1 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--primary), transparent);
    top: -80px; right: -60px;
    animation: floatSlow 8s ease-in-out infinite;
}
.float-shape-2 {
    width: 200px; height: 200px;
    background: radial-gradient(circle, var(--secondary), transparent);
    bottom: 10%; left: -40px;
    animation: floatSlow 10s ease-in-out infinite reverse;
}
.float-shape-3 {
    width: 150px; height: 150px;
    background: radial-gradient(circle, var(--accent), transparent);
    top: 40%; right: 10%;
    animation: floatSlow 7s ease-in-out infinite 1s;
}

/* ---------- 页面横幅 ---------- */
.page-banner {
    position: relative; padding: 120px 0 72px;
    background: linear-gradient(165deg, #070b14 0%, #0c1224 42%, #080d18 100%);
    overflow: hidden; text-align: center;
}
.page-banner::before {
    content: "";
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at 30% 20%, rgba(45,212,191,0.09) 0%, transparent 55%),
                radial-gradient(ellipse at 72% 75%, rgba(167,139,250,0.07) 0%, transparent 50%);
    z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
    font-size: 3rem; font-weight: 900; margin-bottom: 16px;
    opacity: 0; animation: fadeInUp 0.8s ease 0.2s forwards;
}
.page-banner .breadcrumb {
    color: var(--text-muted); font-size: 0.9rem;
    opacity: 0; animation: fadeInUp 0.8s ease 0.4s forwards;
}
.page-banner .breadcrumb a { color: var(--primary); }

.page-banner-enhanced .page-banner-eyebrow {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.32em;
    color: var(--accent);
    text-transform: uppercase;
    margin: 0 0 14px;
    opacity: 0;
    animation: fadeInUp 0.85s ease 0.15s forwards;
}
.page-banner-enhanced .page-banner-lead {
    max-width: 36rem;
    margin: 0 auto 20px;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    opacity: 0;
    animation: fadeInUp 0.85s ease 0.28s forwards;
}
.page-banner-accent {
    width: min(300px, 70%);
    height: 4px;
    margin: 0 auto 22px;
    border-radius: 4px;
    background: var(--gradient);
    box-shadow: 0 0 24px rgba(45, 212, 191, 0.25);
    opacity: 0;
    animation: fadeInUp 0.85s ease 0.38s forwards;
}

/* ---------- 联系我们 · 侧边科技背景卡（对齐右侧表单高度） ---------- */
.contact-aside-stack {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.contact-aside-panel {
    position: relative;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.14);
    box-shadow:
        var(--shadow),
        0 0 48px rgba(45, 212, 191, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.contact-aside-panel__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 85% -5%, rgba(45, 212, 191, 0.1), transparent 48%),
        radial-gradient(ellipse 60% 45% at 0% 100%, rgba(167, 139, 250, 0.07), transparent 55%),
        url('../images/contact-aside-tech.svg') center center / cover no-repeat;
    transform: scale(1.02);
}

.contact-aside-panel__scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        168deg,
        rgba(7, 11, 18, 0.58) 0%,
        rgba(8, 12, 22, 0.52) 35%,
        rgba(11, 16, 28, 0.88) 100%
    );
    pointer-events: none;
    z-index: 1;
}

.contact-aside-panel__inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex: 1 1 auto;
    min-height: 100%;
    padding: clamp(22px, 3.6vw, 34px);
    gap: clamp(18px, 2.8vh, 28px);
}

.contact-aside-eyebrow {
    display: block;
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.42em;
    color: rgba(94, 234, 212, 0.8);
}

.contact-aside-heading {
    margin: 10px 0 0;
    font-size: clamp(1.32rem, 2.9vw, 1.76rem);
    font-weight: 800;
    line-height: 1.26;
    color: #f1f5f9;
}

.contact-aside-lead {
    margin: 12px 0 0;
    max-width: 28rem;
    font-size: 0.84rem;
    line-height: 1.62;
    color: rgba(226, 232, 240, 0.74);
}

.contact-aside-cards {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: auto;
}

.contact-aside-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
    margin: 0;
    border-radius: var(--radius-sm);
    background: rgba(12, 16, 28, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-aside-card:hover {
    border-color: rgba(56, 189, 248, 0.22);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.contact-aside-card__icon {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.16), rgba(99, 102, 241, 0.1));
    color: var(--primary);
    font-size: 1rem;
}

.contact-aside-card__label {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(148, 163, 184, 0.88);
}

.contact-aside-card__value {
    margin: 6px 0 0;
    font-size: 0.85rem;
    line-height: 1.52;
    font-weight: 600;
    color: rgba(248, 250, 252, 0.96);
    word-break: break-word;
}

.contact-aside-card__value a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid rgba(45, 212, 191, 0.25);
    transition: border-color 0.2s ease;
}

.contact-aside-card__value a:hover {
    border-color: rgba(45, 212, 191, 0.65);
}

.contact-sided-card {
    background: rgba(18, 26, 44, 0.65);
    border: 1px solid rgba(148, 163, 184, 0.12);
    border-radius: var(--radius);
    padding: 8px 6px;
    box-shadow: var(--shadow);
}
.contact-trust-quote {
    margin: 0;
    padding: 20px 22px;
    border-left: 4px solid var(--primary);
    background: rgba(45, 212, 191, 0.04);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.96rem;
    line-height: 1.75;
    color: var(--text-secondary);
}
.contact-form-card {
    border: 1px solid rgba(148, 163, 184, 0.12);
    box-shadow:
        var(--shadow),
        0 0 0 1px rgba(45, 212, 191, 0.06),
        inset 0 1px 0 rgba(255,255,255,0.04);
}
.contact-form-head {
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(148,163,184,0.1);
}
.contact-form-head .form-lead {
    margin-top: 8px;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.55;
}

.contact-page-grid-enhanced {
    align-items: stretch;
}

/* 子页面横幅粒子 Canvas 在伪元素之后 */
.page-banner #particle-canvas {
    z-index: 0 !important;
}

/* ---------- 时间线 ---------- */
.timeline { position: relative; padding: 12px 0; }
.timeline::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--primary), var(--secondary), transparent);
    transform: translateX(-50%); z-index: 0;
}
.timeline-item {
    display: flex; align-items: flex-start; margin-bottom: 34px;
    position: relative; min-height: 1px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item:nth-child(odd) { flex-direction: row; }
.timeline-item:nth-child(even) { flex-direction: row-reverse; }

.timeline-branch {
    position: absolute;
    pointer-events: none;
    height: 2px;
    top: calc(36px + 8px); /* 与 .timeline-dot 圆心对齐 */
    z-index: 1;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(45, 212, 191, 0.15), rgba(129, 140, 248, 0.55), rgba(56, 189, 248, 0.4));
    box-shadow:
        0 0 10px rgba(45, 212, 191, 0.2),
        0 0 18px rgba(129, 140, 248, 0.12);
    transform: scaleX(0);
    transform-origin: center center;
    opacity: 0;
    transition:
        opacity 0.35s ease,
        transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.timeline-item:nth-child(odd) .timeline-branch {
    left: calc(42% + 14px);
    width: max(44px, calc(50% - 42% - 22px));
    transform-origin: left center;
}
.timeline-item:nth-child(even) .timeline-branch {
    right: calc(42% + 14px);
    width: max(44px, calc(50% - 42% - 22px));
    transform-origin: right center;
}

.timeline-item:has(.timeline-content:hover) .timeline-branch {
    opacity: 1;
    transform: scaleX(1);
}

.timeline-content {
    width: 42%; padding: 22px 28px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); transition: var(--transition);
    position: relative; z-index: 2;
}
.timeline-content:hover {
    border-color: rgba(59,130,246,0.3);
    transform: translateY(-4px); box-shadow: var(--shadow-glow);
}
.timeline-content .year {
    display: inline-block; padding: 4px 16px;
    background: var(--gradient); border-radius: 50px;
    font-size: 0.85rem; font-weight: 700; color: #fff; margin-bottom: 12px;
}
.timeline-content h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.timeline-content p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.75; }

.timeline-dot {
    position: absolute; left: 50%; top: 36px;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--gradient); transform: translateX(-50%); z-index: 3;
    box-shadow: 0 0 20px rgba(59,130,246,0.4);
}

@media (prefers-reduced-motion: reduce) {
    .timeline-branch {
        opacity: 0.35;
        transform: scaleX(1);
        transition: none;
    }
}

/* ---------- 案例展示 ---------- */
.filter-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.filter-tab {
    padding: 10px 28px; border: 1px solid var(--border-color);
    border-radius: 50px; background: transparent;
    color: var(--text-secondary); font-size: 0.95rem;
    cursor: pointer; transition: var(--transition); font-family: inherit;
}
.filter-tab:hover { border-color: var(--primary); color: var(--text-primary); }
.filter-tab.active { background: var(--gradient); border-color: transparent; color: #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); overflow: hidden; transition: var(--transition);
}
.case-card:hover {
    transform: translateY(-8px); border-color: rgba(59,130,246,0.3);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.case-img {
    height: 220px;
    background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(99,102,241,0.08));
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem; color: var(--primary); position: relative; overflow: hidden;
}
.case-info { padding: 24px; }
.case-info .case-tag {
    display: inline-block; padding: 4px 12px; border-radius: 4px;
    font-size: 0.75rem; font-weight: 600;
    background: rgba(59,130,246,0.1); color: var(--primary); margin-bottom: 10px;
}
.case-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.case-info p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }



/* ---------- 产品服务 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 32px 28px;
    text-align: center; transition: var(--transition); position: relative; overflow: hidden;
}
.product-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: var(--gradient); transform: scaleX(0); transform-origin: left;
    transition: transform 0.4s ease;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card:hover {
    transform: translateY(-8px); border-color: rgba(59,130,246,0.3);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.product-card .p-icon {
    width: 72px; height: 72px; margin: 0 auto 24px; border-radius: 20px;
    background: rgba(59,130,246,0.1); display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; color: var(--primary); transition: var(--transition);
}
.product-card:hover .p-icon { background: var(--gradient); color: #fff; transform: scale(1.1) rotate(-5deg); }
.product-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.product-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }



/* ---------- 新闻 ---------- */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); overflow: hidden; transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-6px); border-color: rgba(45, 212, 191, 0.35);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

/* 头图一律用背景图铺满 + 固定比例，避免 img Absolute 错位 */
.news-card .news-img {
    position: relative;
    flex-shrink: 0;
    width: 100%;
    aspect-ratio: 16 / 10;
    min-height: 200px;
    border-radius: 0;
    overflow: hidden;
    background-color: var(--bg-section);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    transition: transform 0.55s ease, filter 0.35s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-img.news-img--teal {
    background-image:
        radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(7, 11, 20, 0.1) 0%, rgba(7, 11, 20, 0.55) 100%),
        linear-gradient(145deg, rgba(45, 212, 191, 0.28) 0%, #121a2c 48%, rgba(129, 140, 248, 0.14) 100%);
    background-size: 20px 20px, auto, auto;
}

.news-img.news-img--cyan {
    background-image:
        radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(7, 11, 20, 0.1) 0%, rgba(7, 11, 20, 0.55) 100%),
        linear-gradient(145deg, rgba(56, 189, 248, 0.28) 0%, #121a2c 50%, rgba(45, 212, 191, 0.08) 100%);
    background-size: 20px 20px, auto, auto;
}

.news-img.news-img--violet {
    background-image:
        radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(7, 11, 20, 0.12) 0%, rgba(7, 11, 20, 0.58) 100%),
        linear-gradient(145deg, rgba(167, 139, 250, 0.28) 0%, #121a2c 50%, rgba(56, 189, 248, 0.09) 100%);
    background-size: 20px 20px, auto, auto;
}

/* 实图：DOM 写法 —— style="--news-bg: url('images/news/xxx.jpg');" class 含 news-img--photo */
.news-img.news-img--photo {
    background-image:
        linear-gradient(180deg, rgba(7, 11, 20, 0.2) 0%, rgba(7, 11, 20, 0.7) 100%),
        var(--news-bg);
    background-size: auto, cover;
    background-position: center, center;
}

.news-img.news-img--photo .news-img__mock {
    display: none;
}

.news-img__mock {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    text-align: center;
    pointer-events: none;
}

.news-img__mock i {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--primary);
    background: rgba(45, 212, 191, 0.12);
    border: 1px solid rgba(45, 212, 191, 0.2);
}

.news-img.news-img--cyan .news-img__mock i {
    color: var(--accent);
    background: rgba(56, 189, 248, 0.14);
    border-color: rgba(56, 189, 248, 0.25);
}

.news-img.news-img--violet .news-img__mock i {
    color: var(--secondary);
    background: rgba(167, 139, 250, 0.14);
    border-color: rgba(167, 139, 250, 0.25);
}

.news-img__mock span {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
}

.news-img__mock small {
    font-size: 0.67rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.news-img__mock::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
    background-size: 200% 100%;
    animation: news-scan 4s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes news-scan {
    0%, 100% { background-position: 120% 0; }
    50% { background-position: -20% 0; }
}

.news-card:hover .news-img {
    transform: scale(1.03);
    filter: brightness(1.06);
}

.news-body {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.news-body .news-date { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }
.news-body h3 {
    flex: 1;
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.5;
}
.news-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.news-body .news-more {
    margin-top: auto;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
}



/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.team-member {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 36px 24px 28px;
    text-align: center; transition: var(--transition);
}
.team-member:hover { transform: translateY(-6px); border-color: rgba(59,130,246,0.3); box-shadow: var(--shadow-glow); }
.team-avatar {
    width: 100px; height: 100px; margin: 0 auto 20px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(99,102,241,0.1));
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; color: var(--primary); transition: var(--transition);
}
.team-member:hover .team-avatar-ph {
    transform: scale(1.06);
    border-color: rgba(45, 212, 191, 0.45);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.team-member:hover .team-avatar-ph .team-avatar-ph__glyph {
    color: #fff;
}

.team-member:hover .team-avatar:not(.team-avatar-ph) {
    background: var(--gradient);
    color: #fff;
    transform: scale(1.05);
}
.team-member h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.team-member .team-role { color: var(--primary); font-size: 0.85rem; font-weight: 500; margin-bottom: 12px; }
.team-member p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6; }



/* ---------- 分页 ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 48px; }
.pagination a {
    display: flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border: 1px solid var(--border-color); border-radius: 8px;
    color: var(--text-secondary); font-size: 0.9rem; transition: var(--transition);
}
.pagination a:hover, .pagination a.active { background: var(--gradient); border-color: transparent; color: #081018; font-weight: 700; }
.pagination a.next { width: auto; padding: 0 20px; gap: 6px; }

/* ---------- 统计条 ---------- */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); }
.stat-item { padding: 32px 24px; text-align: center; background: var(--bg-card); position: relative; }
.stat-item:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 15%; height: 70%; width: 1px; background: var(--border-color); }
.stat-item .stat-num { font-size: 2.8rem; font-weight: 900; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.stat-item .stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 8px; }


/* ---------- CTA ---------- */
.cta-section { padding: clamp(48px, 8vw, 72px) 0; background: radial-gradient(ellipse 90% 80% at 50% 40%, rgba(45,212,191,0.09), transparent 55%), linear-gradient(180deg, rgba(12,18,34,0.5), rgba(7,11,20,0.92)); text-align: center; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.cta-section h2 { font-size: clamp(1.5rem, 3.8vw, 2.35rem); font-weight: 800; margin-bottom: 16px; line-height: var(--leading-tight); }
.cta-section p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ---------- MVV ---------- */
.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mvv-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 40px 28px; text-align: center; transition: var(--transition); }
.mvv-card:hover { transform: translateY(-6px); border-color: rgba(59,130,246,0.3); box-shadow: var(--shadow-glow); }
.mvv-card .mvv-icon { font-size: 2.5rem; color: var(--primary); margin-bottom: 20px; }
.mvv-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.mvv-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8; }


/* ---------- 流程（服务流程卡片 + 连接箭头 · 自适应换行） ---------- */
.process-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: 0;
    column-gap: 6px;
    row-gap: 18px;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
}

.process-steps.process-flow > .process-step {
    flex: 1 1 140px;
    max-width: 220px;
    min-width: min(220px, 100%);
}

.process-step {
    text-align: left;
    padding: 42px 20px 24px;
    background: rgba(17, 24, 41, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.1);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.process-steps.process-flow > .process-step::before {
    content: attr(data-step);
    position: absolute;
    top: -0.18em;
    left: -4px;
    font-size: clamp(3rem, 7vw, 4.85rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.07em;
    color: hsla(var(--step-hue, 170), 70%, 58%, 0.11);
    transform: rotate(-42deg);
    transform-origin: 0 0;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}

.process-steps.process-flow > .process-step:hover {
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, 0.28);
}

.process-steps.process-flow > .process-step h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.process-steps.process-flow > .process-step p {
    color: var(--text-secondary);
    font-size: 0.84rem;
    line-height: 1.58;
    position: relative;
    z-index: 1;
}

.process-flow-arrow {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    padding: 0 2px;
    color: rgba(45, 212, 191, 0.5);
    font-size: 0.85rem;
    text-shadow: 0 0 18px rgba(45, 212, 191, 0.2);
}

.process-flow-arrow i {
    display: block;
}

@media (max-width: 992px) {
    .process-flow-arrow {
        flex-basis: 100%;
        width: 100%;
        justify-content: center;
        transform: rotate(90deg);
        padding: 4px 0;
        opacity: 0.75;
    }
}



/* ---------- 资质 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 28px 16px; text-align: center; transition: var(--transition); }
.cert-item:hover { transform: translateY(-4px); border-color: rgba(59,130,246,0.3); }
.cert-item i { font-size: 2rem; color: var(--accent); margin-bottom: 12px; }
.cert-item p { color: var(--text-secondary); font-size: 0.85rem; }



/* ---------- 滚动进度条 ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; width: 0%; height: 3px; background: var(--gradient); z-index: 1001; transition: width 0.1s linear; }

/* ---------- 加载动画 ---------- */
.page-loader { position: fixed; inset: 0; z-index: 9999; background: var(--bg-dark); display: flex; align-items: center; justify-content: center; transition: opacity 0.6s ease, visibility 0.6s ease; }
.page-loader.hidden { opacity: 0; visibility: hidden; }
.loader-spinner { width: 48px; height: 48px; border: 3px solid var(--border-color); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }

/* ---------- 特性 ---------- */
.feature-section { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-item { text-align: center; padding: 32px 20px; }
.feature-item .f-icon { font-size: 2.2rem; color: var(--primary); margin-bottom: 16px; }
.feature-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-item p { color: var(--text-secondary); font-size: 0.9rem; }


/* ---------- 客户墙 ---------- */
.client-wall { display: flex; justify-content: center; flex-wrap: wrap; gap: 40px 60px; padding: 20px 0; }
.client-item { width: 120px; height: 48px; background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 0.85rem; font-weight: 600; transition: var(--transition); opacity: 0.6; }
.client-item:hover { opacity: 1; border-color: rgba(59,130,246,0.3); transform: translateY(-2px); }

/* ---------- 工具类 ---------- */
.map-placeholder { width: 100%; height: 350px; border-radius: var(--radius); background: var(--bg-card); border: 1px solid var(--border-color); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--text-muted); }
.map-placeholder i { font-size: 2.5rem; color: var(--primary); }
.content-block { max-width: 860px; margin: 0 auto; }
.content-block p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.9; margin-bottom: 20px; }
.content-block p strong { color: var(--text-primary); }
.page-intro { max-width: 800px; margin: 0 auto 48px; text-align: center; color: var(--text-secondary); font-size: 1.05rem; line-height: 1.9; }
.check-list { list-style: none; padding: 0; }
.check-list li { padding: 8px 0; color: var(--text-secondary); display: flex; align-items: flex-start; gap: 10px; font-size: 0.95rem; }
.check-list li i { color: var(--accent); margin-top: 4px; flex-shrink: 0; }

/* ---------- Reveal 动画 ---------- */
.reveal-text { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-text.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* ---------- Section 增强 ---------- */
.section-lg { padding: 88px 0; }



/* ---------- 背景分层与渐变变体 ---------- */
.section-gradient {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-section) 50%, var(--bg-dark) 100%);
    position: relative;
}
.section-radial {
    background: radial-gradient(ellipse at 50% 0%, rgba(45,212,191,0.05) 0%, transparent 60%),
                var(--bg-dark);
    position: relative;
}
.section-radial-dark {
    background: radial-gradient(ellipse at 50% 100%, rgba(99,102,241,0.03) 0%, transparent 50%),
                var(--bg-section);
    position: relative;
}
.section-darker {
    background: #080c15;
    position: relative;
}

/* ---------- 顶部发光边 ---------- */
.glow-border-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.25;
}


/* ---------- 几何科技感装饰 ---------- */

/* 背景点阵网格 */
.geo-grid { position: relative; }
.geo-grid::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* 背景斜线网格 */
.geo-slash { position: relative; }
.geo-slash::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(-45deg, transparent, transparent 30px, rgba(59,130,246,0.025) 30px, rgba(59,130,246,0.025) 31px);
    pointer-events: none;
    z-index: 0;
}

/* 六边形装饰 */
.geo-hex {
    position: absolute;
    background: linear-gradient(135deg, rgba(59,130,246,0.06), rgba(99,102,241,0.03));
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    pointer-events: none;
    z-index: 1;
    animation: floatSlow 12s ease-in-out infinite;
}
.geo-hex-1 { width: 60px; height: 69px; top: 10%; right: 5%; }
.geo-hex-2 { width: 100px; height: 115px; bottom: 15%; left: 3%; animation-delay: -4s; }
.geo-hex-3 { width: 40px; height: 46px; top: 50%; right: 8%; animation-delay: -8s; }

/* 三角形装饰 */
.geo-tri {
    position: absolute;
    width: 0; height: 0;
    border-style: solid;
    opacity: 0.05;
    pointer-events: none;
    z-index: 1;
}
.geo-tri-1 {
    border-width: 0 50px 86px 50px;
    border-color: transparent transparent var(--primary) transparent;
    top: 20%; left: 5%;
    animation: float 15s ease-in-out infinite;
}
.geo-tri-2 {
    border-width: 0 30px 52px 30px;
    border-color: transparent transparent var(--secondary) transparent;
    bottom: 25%; right: 10%;
    animation: float 13s ease-in-out infinite reverse;
}

/* 圆环装饰 */
.geo-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(59,130,246,0.08);
    pointer-events: none;
    z-index: 1;
    animation: floatSlow 10s ease-in-out infinite;
}
.geo-ring-1 { width: 200px; height: 200px; top: -40px; right: -30px; border-width: 1px; }
.geo-ring-2 { width: 120px; height: 120px; bottom: 20%; left: -20px; border-color: rgba(99,102,241,0.06); animation-delay: -5s; }
.geo-ring-3 { width: 60px; height: 60px; top: 35%; right: 20%; border-color: rgba(6,182,212,0.08); animation-delay: -2s; }

/* ---------- 卡片栅格区块 · 动态几何背景（仅用 ::after，不覆盖 .geo-grid::before） ---------- */
@keyframes card-section-geo-drift {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translate(-1.8%, 1.2%) rotate(2.2deg);
        opacity: 1;
    }
    100% {
        transform: translate(1.2%, -2%) rotate(-1.6deg);
        opacity: 0.75;
    }
}

section.section:not(#hero):is(
    :has(.services-grid),
    :has(.case-grid),
    :has(.product-grid),
    :has(.news-list),
    :has(.team-grid),
    :has(.mvv-grid),
    :has(.cert-grid),
    :has(.about-stats),
    :has(.stats-bar),
    :has(.advantages-content),
    :has(.feature-section),
    :has(.contact-page-grid),
    :has(.contact-page-grid-enhanced),
    :has(.timeline),
    :has(.process-steps),
    :has(.skill-bar)
)::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 62% 42% at 8% 22%, rgba(45, 212, 191, 0.065) 0%, transparent 54%),
        radial-gradient(ellipse 55% 48% at 92% 72%, rgba(167, 139, 250, 0.058) 0%, transparent 52%),
        radial-gradient(circle at 50% 105%, rgba(56, 189, 248, 0.035) 0%, transparent 42%),
        repeating-linear-gradient(
            -32deg,
            transparent 0,
            transparent 34px,
            rgba(99, 102, 241, 0.024) 34px,
            rgba(99, 102, 241, 0.024) 35px
        );
    animation: card-section-geo-drift 38s ease-in-out infinite alternate;
}

section.section:not(#hero):is(
    :has(.services-grid),
    :has(.case-grid),
    :has(.product-grid),
    :has(.news-list),
    :has(.team-grid),
    :has(.mvv-grid),
    :has(.cert-grid),
    :has(.about-stats),
    :has(.stats-bar),
    :has(.advantages-content),
    :has(.feature-section),
    :has(.contact-page-grid),
    :has(.contact-page-grid-enhanced),
    :has(.timeline),
    :has(.process-steps),
    :has(.skill-bar)
) > .container {
    position: relative;
    z-index: 2;
}

@media (prefers-reduced-motion: reduce) {
    section.section:not(#hero):is(
        :has(.services-grid),
        :has(.case-grid),
        :has(.product-grid),
        :has(.news-list),
        :has(.team-grid),
        :has(.mvv-grid),
        :has(.cert-grid),
        :has(.about-stats),
        :has(.stats-bar),
        :has(.advantages-content),
        :has(.feature-section),
        :has(.contact-page-grid),
        :has(.contact-page-grid-enhanced),
        :has(.timeline),
        :has(.process-steps),
        :has(.skill-bar)
    )::after {
        animation: none;
    }
}

/* 卡片角落装饰 */
.geo-corner { position: relative; }
.geo-corner::before, .geo-corner::after {
    content: '';
    position: absolute;
    width: 24px; height: 24px;
    border-color: var(--primary);
    border-style: solid;
    opacity: 0.15;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.geo-corner:hover::before, .geo-corner:hover::after { opacity: 0.4; }
.geo-corner::before { top: 8px; left: 8px; border-width: 2px 0 0 2px; border-radius: 4px 0 0 0; }
.geo-corner::after { bottom: 8px; right: 8px; border-width: 0 2px 2px 0; border-radius: 0 0 4px 0; }

/* 浮动光点 */
.glow-dots { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.glow-dot {
    position: absolute;
    width: 4px; height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.15;
    animation: dotPulse 3s ease-in-out infinite;
}
.glow-dot:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.glow-dot:nth-child(2) { top: 60%; left: 85%; animation-delay: 0.5s; }
.glow-dot:nth-child(3) { top: 30%; left: 50%; animation-delay: 1s; width: 6px; height: 6px; }
.glow-dot:nth-child(4) { top: 75%; left: 25%; animation-delay: 1.5s; }
.glow-dot:nth-child(5) { top: 15%; left: 70%; animation-delay: 2s; }
.glow-dot:nth-child(6) { top: 85%; left: 60%; animation-delay: 2.5s; }
@keyframes dotPulse {
    0%, 100% { opacity: 0.08; transform: scale(1); }
    50% { opacity: 0.25; transform: scale(1.5); }
}

/* 水平扫描线 */
.scan-line {
    position: absolute; left: 0; width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0;
    animation: scanLineMove 4s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}
@keyframes scanLineMove {
    0% { top: 0; opacity: 0; }
    10% { opacity: 0.2; }
    90% { opacity: 0.2; }
    100% { top: 100%; opacity: 0; }
}

/* 渐变角度分割线 */
.divider-angle {
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 20%, var(--secondary) 50%, var(--primary) 80%, transparent 100%);
    opacity: 0.2;
    margin: 0 auto;
}

/* L形角落支架 */
.corner-bracket-lg {
    position: absolute; width: 40px; height: 40px;
    border-color: rgba(59,130,246,0.12);
    border-style: solid;
    pointer-events: none;
}
.corner-bracket-lg.tl { top: -8px; left: -8px; border-width: 2px 0 0 2px; border-radius: 6px 0 0 0; }
.corner-bracket-lg.tr { top: -8px; right: -8px; border-width: 2px 2px 0 0; border-radius: 0 6px 0 0; }
.corner-bracket-lg.bl { bottom: -8px; left: -8px; border-width: 0 0 2px 2px; border-radius: 0 0 0 6px; }
.corner-bracket-lg.br { bottom: -8px; right: -8px; border-width: 0 2px 2px 0; border-radius: 0 0 6px 0; }


/* ---------- 配图占位（本地化，替代外链占位图） ---------- */
@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.img-placeholder {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(145deg, rgba(45, 212, 191, 0.08) 0%, rgba(18, 26, 44, 0.95) 48%, rgba(129, 140, 248, 0.06) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 18px 18px;
    opacity: 0.5;
    pointer-events: none;
}

.img-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
    animation: shimmer 5s ease-in-out infinite;
    pointer-events: none;
}

.img-placeholder--cyan {
    background: linear-gradient(145deg, rgba(56, 189, 248, 0.1) 0%, rgba(18, 26, 44, 0.94) 50%, rgba(45, 212, 191, 0.05) 100%);
}

.img-placeholder--violet {
    background: linear-gradient(145deg, rgba(167, 139, 250, 0.1) 0%, rgba(18, 26, 44, 0.94) 50%, rgba(56, 189, 248, 0.05) 100%);
}

.img-placeholder--teal {
    background: linear-gradient(145deg, rgba(45, 212, 191, 0.12) 0%, rgba(18, 26, 44, 0.94) 50%, rgba(129, 140, 248, 0.06) 100%);
}

.img-placeholder__icon {
    position: relative;
    z-index: 1;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    color: var(--primary);
    background: rgba(45, 212, 191, 0.12);
    border: 1px solid rgba(45, 212, 191, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.45s ease;
}

.img-placeholder--cyan .img-placeholder__icon {
    color: var(--accent);
    background: rgba(56, 189, 248, 0.12);
    border-color: rgba(56, 189, 248, 0.22);
}

.img-placeholder--violet .img-placeholder__icon {
    color: var(--secondary);
    background: rgba(167, 139, 250, 0.12);
    border-color: rgba(167, 139, 250, 0.22);
}

.img-placeholder__title {
    position: relative;
    z-index: 1;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.04em;
    line-height: var(--leading-tight);
}

.img-placeholder__hint {
    position: relative;
    z-index: 1;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0.85;
}

.about-image .img-placeholder {
    position: relative;
    min-height: 280px;
    border-radius: inherit;
    border: none;
    aspect-ratio: 4 / 3;
}

.about-image .img-placeholder::after {
    animation-duration: 7s;
}

/* ---------- 占位图片样式（案例区等仍可用 <img>） ---------- */
.case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    position: absolute;
    top: 0;
    left: 0;
}
.case-card:hover .case-img img {
    transform: scale(1.08);
}

.case-card:hover .case-img .img-placeholder {
    filter: brightness(1.06);
}

.case-card:hover .case-img .img-placeholder__icon {
    transform: scale(1.06);
}

.case-img .case-overlay { z-index: 2; }

/* 关于页侧图 */
.about-image {
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
}
.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-office-photo {
    position: relative;
    margin: 0;
}

.about-office-photo img {
    aspect-ratio: 3 / 4;
    object-fit: cover;
    object-position: center 40%;
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.about-image:hover .about-office-photo img {
    transform: scale(1.03);
}

.about-office-photo-cap {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    padding: 14px 16px;
    background: linear-gradient(to top, rgba(8, 18, 28, 0.82), transparent);
    color: #fff;
    font-size: 0.8125rem;
}

.about-office-photo-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(45, 212, 191, 0.22);
    border: 1px solid rgba(45, 212, 191, 0.35);
    font-weight: 600;
}

.about-office-photo-addr {
    opacity: 0.92;
}

/* 团队头像图片版 */
.team-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.team-avatar-ph {
    border: 2px solid rgba(45, 212, 191, 0.2);
    background: linear-gradient(145deg, rgba(45, 212, 191, 0.15), rgba(129, 140, 248, 0.1));
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.team-avatar-ph--cyan {
    background: linear-gradient(145deg, rgba(56, 189, 248, 0.18), rgba(45, 212, 191, 0.08));
}

.team-avatar-ph--violet {
    background: linear-gradient(145deg, rgba(167, 139, 250, 0.2), rgba(56, 189, 248, 0.08));
}

.team-avatar-ph .team-avatar-ph__glyph {
    line-height: 1;
}

/*  banner 背景图片 */
.banner-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.08;
    z-index: 0;
    pointer-events: none;
}

/* ---------- 交错入场 ---------- */
.stagger-item {
    opacity: 0;
    transform: translateY(24px);
}
.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}
.stagger-item:nth-child(1) { transition: opacity 0.5s ease 0.05s, transform 0.5s ease 0.05s; }
.stagger-item:nth-child(2) { transition: opacity 0.5s ease 0.12s, transform 0.5s ease 0.12s; }
.stagger-item:nth-child(3) { transition: opacity 0.5s ease 0.19s, transform 0.5s ease 0.19s; }
.stagger-item:nth-child(4) { transition: opacity 0.5s ease 0.26s, transform 0.5s ease 0.26s; }
.stagger-item:nth-child(5) { transition: opacity 0.5s ease 0.33s, transform 0.5s ease 0.33s; }
.stagger-item:nth-child(6) { transition: opacity 0.5s ease 0.40s, transform 0.5s ease 0.40s; }
.stagger-item:nth-child(7) { transition: opacity 0.5s ease 0.47s, transform 0.5s ease 0.47s; }
.stagger-item:nth-child(8) { transition: opacity 0.5s ease 0.54s, transform 0.5s ease 0.54s; }

/* ---------- 渐变发光线条 ---------- */
.glow-divider {
    width: 80px;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(59,130,246,0.4);
    animation: pulseGlow 2s ease-in-out infinite;
}

/* ---------- 卡片悬浮增强 ---------- */
.card-hover-glow {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.card-hover-glow:hover {
    box-shadow: 0 0 30px rgba(59,130,246,0.1), 0 8px 32px rgba(0,0,0,0.3);
    border-color: rgba(59,130,246,0.25);
    transform: translateY(-4px);
}

/* ---------- 数字光效 ---------- */
.num-glow {
    animation: counterGlow 3s ease-in-out infinite;
}

/* ---------- 统计行光效 ---------- */
@keyframes counterGlow {
    0%, 100% { text-shadow: 0 0 10px rgba(59, 130, 246, 0.3); }
    50% { text-shadow: 0 0 30px rgba(59, 130, 246, 0.6); }
}

/* ---------- 背景装饰点阵 ---------- */
.dot-pattern {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    opacity: 0.03;
    background-image: radial-gradient(circle, #3b82f6 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: 0;
}

/* ---------- 段落文字优化 ---------- */
.text-compact p {
    margin-bottom: 14px;
    line-height: 1.75;
}


/* ---------- 媒体占位符 (参考大鱼营销风格) ---------- */
.media-placeholder {
    background: linear-gradient(145deg, rgba(59,130,246,0.08), rgba(99,102,241,0.04));
    border: 1px solid rgba(59,130,246,0.1);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
    min-height: 180px;
}
.media-placeholder i {
    font-size: 2.5rem;
    color: var(--primary);
    opacity: 0.5;
    margin-bottom: 8px;
}
.media-placeholder span {
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    opacity: 0.4;
}
.media-placeholder::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(59,130,246,0.04) 50%, transparent 60%);
    background-size: 200% 200%;
    animation: shimmer 3s ease infinite;
}

/* 联系方式紧凑版 */
.contact-compact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.contact-compact .contact-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.contact-compact .contact-row:hover {
    border-color: rgba(59,130,246,0.25);
}
.contact-compact .contact-row i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(59,130,246,0.1);
    color: var(--primary);
    font-size: 0.95rem;
    flex-shrink: 0;
}
.contact-compact .contact-row .info h4 {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 2px;
}
.contact-compact .contact-row .info p,
.contact-compact .contact-row .info a {
    font-size: 0.9rem;
    color: var(--text-primary);
}
.contact-compact .contact-row .info a:hover {
    color: var(--primary);
}

/* 联系表单紧凑版 */
.form-compact input,
.form-compact textarea {
    padding: 12px 16px !important;
    font-size: 0.9rem !important;
}
.form-compact .form-group {
    margin-bottom: 12px !important;
}

/* ---------- 技能进度条 ---------- */
.skill-bar { margin-bottom: 24px; }
.skill-bar .skill-name { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 8px; color: var(--text-secondary); }
.skill-bar .skill-name span:last-child { color: var(--primary); font-weight: 600; }
.skill-bar .bar-track { height: 6px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; }
.skill-bar .bar-fill { height: 100%; border-radius: 3px; background: var(--gradient); width: 0; transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1); }

/* ---------- Hero 滚动指示器 ---------- */
.hero-scroll-indicator { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--text-muted); font-size: 0.7rem; letter-spacing: 2px; opacity: 0; animation: fadeInUp 0.8s ease 2s forwards; }
.hero-scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--primary), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 0% { transform: scaleY(0); transform-origin: top; opacity: 1; } 50% { transform: scaleY(1); transform-origin: top; opacity: 1; } 50.1% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; } }


/* ==========================================================
   响应式设计：视口宽度 ≤1023px 采用移动端导航与主版式；≥1024px 为桌面端
   ========================================================== */

@media (max-width: 1023px) {
    :root {
        --header-height: 60px;
        --radius: 10px;
        --radius-sm: 6px;
    }
    .container { padding: 0 16px; }

    /* 导航抽屉：蒙层与面板不用强 backdrop-blur（避免整块发糊）；抽屉内可纵向滚动 */
    .menu-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(3, 6, 15, 0.72);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        z-index: 1080;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity 0.32s ease, visibility 0.32s ease;
    }
    .menu-overlay.active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 88vw);
        height: 100vh;
        height: 100dvh;
        max-height: 100dvh;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        background: linear-gradient(198deg, #121b32 0%, #0e1628 45%, #0a101c 100%);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border-left: 1px solid rgba(45, 212, 191, 0.22);
        gap: 0;
        padding: 0;
        transform: translateX(102%);
        transition: transform 0.38s cubic-bezier(0.32, 0.72, 0, 1);
        z-index: 1120;
        box-shadow: -24px 0 60px rgba(0, 0, 0, 0.55), inset 1px 0 0 rgba(255,255,255,0.04);
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior-y: contain;
        touch-action: pan-y;
    }
    .nav-menu.active {
        transform: translateX(0);
    }
    .nav-menu::before {
        content: '';
        position: absolute;
        top: 12%;
        bottom: 12%;
        left: 0;
        width: 1px;
        background: linear-gradient(180deg, transparent, rgba(45,212,191,0.45), transparent);
        opacity: 0.25;
        pointer-events: none;
    }
    
    /* 菜单头部：标题 + 关闭按钮 */
    .menu-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: calc(14px + env(safe-area-inset-top, 0px)) 18px 14px;
        border-bottom: 1px solid rgba(148,163,184,0.12);
        margin-bottom: 10px;
        flex-shrink: 0;
    }
    .menu-header .menu-title {
        font-size: 1.08rem;
        font-weight: 800;
        color: #f8fafc;
        letter-spacing: 0.04em;
    }
    .menu-header .menu-close {
        width: 40px;
        height: 40px;
        border: none;
        border-radius: 12px;
        background: rgba(255,255,255,0.06);
        color: #94a3b8;
        font-size: 1.15rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: background 0.2s ease, color 0.2s ease;
    }
    .menu-header .menu-close:active {
        background: rgba(45,212,191,0.18);
        color: #ecfdf5;
    }
    
    /* 导航链接列表 */
    .nav-menu > li:not(.menu-header):not(.nav-menu-cta-wrap) {
        flex-shrink: 0;
    }
    .nav-menu .nav-link {
        display: flex;
        align-items: center;
        gap: 14px;
        font-size: 1.02rem;
        font-weight: 500;
        padding: 12px 18px;
        margin: 0 10px 4px;
        width: auto;
        text-align: left;
        border-radius: 12px;
        color: #cbd5e1;
        transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
    }
    .nav-menu .nav-link::before {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: rgba(45,212,191,0.35);
        flex-shrink: 0;
        transition: all 0.2s ease;
    }
    .nav-menu .nav-link.active::before {
        background: var(--primary);
        box-shadow: 0 0 10px rgba(45,212,191,0.55);
    }
    .nav-menu .nav-link.active {
        color: #f8fafc;
        background: rgba(45,212,191,0.12);
        border: 1px solid rgba(45,212,191,0.15);
    }
    .nav-menu .nav-link:active {
        background: rgba(45,212,191,0.16);
        transform: scale(0.99);
    }

    /* 抽屉底部 CTA（随整块菜单滚动可见） */
    .nav-menu > .nav-menu-cta-wrap {
        display: list-item;
        margin-top: 0;
        padding: 8px 12px calc(14px + env(safe-area-inset-bottom, 0px));
        border-top: 1px solid rgba(148,163,184,0.1);
        background: linear-gradient(180deg, transparent, rgba(4, 8, 16, 0.72));
        flex-shrink: 0;
    }
    .nav-menu-cta {
        display: flex !important;
        align-items: center;
        justify-content: center;
        gap: 10px;
        width: 100%;
        padding: 14px 16px !important;
        margin: 0 !important;
        border-radius: 12px !important;
        font-weight: 700 !important;
        font-size: 0.95rem !important;
        color: #081018 !important;
        background: var(--gradient) !important;
        border: none !important;
        box-shadow: 0 10px 32px rgba(45,212,191,0.28);
        text-decoration: none;
    }
    .nav-menu-cta::before {
        display: none !important;
    }
    .nav-menu-cta i {
        font-size: 1rem;
        color: inherit;
    }
    
    .hamburger { display: flex; z-index: 1140; }
    body.menu-open {
        overflow: hidden;
        overscroll-behavior: none;
    }

    /* Hero */
    #hero { min-height: 100svh; height: 100svh; }
    .hero-title { font-size: 1.9rem; }
    .hero-badge { font-size: 0.75rem; letter-spacing: 2px; margin-bottom: 16px; }
    .hero-desc { font-size: 1rem; margin-bottom: 28px; }
    .hero-btns { flex-direction: column; align-items: stretch; gap: 12px; }
    .hero-btns .btn,
    .hero-btns .btn-hero-solid,
    .hero-btns .btn-hero-ghost { justify-content: center; }
    .hide-mobile { display: none !important; }
    .hero-carousel__btn--floating.hero-carousel__btn--prev {
        left: max(8px, env(safe-area-inset-left));
    }
    .hero-carousel__btn--floating.hero-carousel__btn--next {
        right: max(8px, env(safe-area-inset-right));
    }
    .hero-carousel__btn--floating {
        width: 44px;
        height: 44px;
    }

    /* Section */
    .section { padding: 56px 0; }
    .section-lg { padding: 56px 0; }
    .section-title { font-size: 1.6rem; }
    .section-title-lg { font-size: 1.6rem; margin-bottom: 12px; }
    .section-header { margin-bottom: 32px; }
    .section-tag { font-size: 0.7rem; padding: 4px 14px; margin-bottom: 12px; }
    .section-sub { font-size: 0.9rem; }

    /* Page banner */
    .page-banner { padding: 90px 0 44px; }
    .page-banner h1 { font-size: 1.8rem; }

    /* 关于 / 联系我们等宽栅格在「类移动」宽度下一列堆叠 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .about-content .about-text,
    .about-content .about-image,
    .about-content .about-stats {
        grid-column: 1 / -1;
        grid-row: auto;
    }
    .contact-wrap {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Cards - single column */
    .services-grid { grid-template-columns: 1fr; gap: 14px; }
    .case-grid { grid-template-columns: 1fr; gap: 14px; }
    .product-grid { grid-template-columns: 1fr; gap: 14px; }
    .news-list { grid-template-columns: 1fr; gap: 14px; }
    .team-grid { grid-template-columns: 1fr; gap: 14px; }
    .mvv-grid { grid-template-columns: 1fr; gap: 14px; }
    .cert-grid { grid-template-columns: 1fr; gap: 12px; }


    .feature-section { grid-template-columns: 1fr; gap: 0; }
    .advantages-content { gap: 16px; }

    /* Card padding */
    .service-card { padding: 24px 20px; }
    .product-card { padding: 24px 20px; }
    .case-info { padding: 16px; }
    .news-body { padding: 16px; }
    .team-member { padding: 24px 16px 20px; }
    .mvv-card { padding: 28px 20px; }
    .contact-form { padding: 20px; }

    /* Service icon */
    .service-icon { width: 52px; height: 52px; font-size: 1.3rem; margin-bottom: 14px; }
    .product-card .p-icon { width: 56px; height: 56px; font-size: 1.4rem; margin-bottom: 16px; }

    /* Advantage */
    .advantage-item {
        flex-direction: column; gap: 8px; padding: 20px;
    }
    .advantage-number { font-size: 1.8rem; }

    /* Stats */
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        border-radius: var(--radius-sm);
    }
    .stat-item { padding: 20px 12px; }
    .stat-item .stat-num { font-size: 1.8rem; }
    .stat-item:not(:last-child)::after { display: none; }

    /* About stats */
    .about-stats { gap: 12px; }
    .stat-card { padding: 20px 12px; }
    .stat-number { font-size: 2rem; }

    /* Contact */
    .contact-item { padding: 16px; }
    .contact-icon { width: 40px; height: 40px; min-width: 40px; font-size: 1rem; }
    .map-placeholder { height: 200px; }

    /* CTA */
    .cta-section { padding: 36px 0; }
    .cta-section h2 { font-size: 1.4rem; }
    .cta-section p { font-size: 0.95rem; margin-bottom: 24px; }

    /* Footer */
    .footer-top { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 4px; }

    /* Buttons */
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .btn-block { width: 100%; }

    /* Timeline */
    .timeline::before { left: 16px; }
    .timeline-item,
    .timeline-item:nth-child(even) { flex-direction: row; margin-bottom: 26px; }
    .timeline-content { width: calc(100% - 48px); margin-left: 48px; padding: 20px; }
    .timeline-dot { left: 16px; top: 28px; width: 12px; height: 12px; transform: translateX(-50%); }
    .timeline-branch { display: none; }

    /* Filter tabs */
    .filter-tabs { gap: 8px; margin-bottom: 24px; }
    .filter-tab { padding: 8px 18px; font-size: 0.85rem; }

    /* Pagination */
    .pagination { gap: 6px; margin-top: 32px; }
    .pagination a { width: 38px; height: 38px; font-size: 0.85rem; }

    /* Case image */
    .case-img { height: 160px; font-size: 2rem; }

    /* News image */
    .news-img { aspect-ratio: 16 / 10; min-height: 160px; }

    /* Team avatar */
    .team-avatar { width: 72px; height: 72px; font-size: 1.8rem; }

    /* Progress steps */
    .process-steps.process-flow > .process-step {
        flex: 1 1 100%;
        max-width: min(100%, 400px);
    }

    /* Skill bars */
    .skill-bar { margin-bottom: 16px; }
    div[style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }

    /* Scroll indicator */
    .hero-scroll-indicator { bottom: 20px; }
    .hero-scroll-line { height: 28px; }

    /* Back to top */
    .back-to-top { bottom: 16px; right: 16px; width: 40px; height: 40px; font-size: 0.9rem; }
}

/* 小手机 ≤ 480px */
@media (max-width: 480px) {
    .hero-title { font-size: 1.6rem; }
    .section-title-lg { font-size: 1.4rem; }
    .page-banner h1 { font-size: 1.5rem; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 1px; }
    .stat-item { padding: 16px 8px; }
    .about-stats { grid-template-columns: minmax(0, 1fr); gap: 8px; }

    .contact-aside-cards {
        grid-template-columns: minmax(0, 1fr);
    }

    .form-group input,
    .form-group textarea { padding: 12px 14px; font-size: 0.9rem; }

    .nav-menu { width: 260px; }
}

/* 更小屏幕的安全兜底 */
@media (max-width: 360px) {
    .container { padding: 0 12px; }
    .hero-title { font-size: 1.4rem; }
    .logo-text { font-size: 1rem; }
    .nav-menu { width: 240px; }
}