/* ============================================================
   上海江舟数智科技有限公司官网
   设计方向：Neo-Futurism · 深空蓝黑 + 青色辉光
   ============================================================ */
:root {
    --bg: #04060c;
    --bg-2: #070b14;
    --surface: rgba(13, 20, 36, 0.55);
    --surface-solid: #0b1120;
    --border: rgba(56, 80, 120, 0.28);
    --border-glow: rgba(0, 229, 255, 0.35);
    --text: #e8eefc;
    --text-2: #8b96b0;
    --cyan: #00e5ff;
    --blue: #3b82f6;
    --cyan-dim: rgba(0, 229, 255, 0.12);
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(0, 229, 255, 0.25); }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #1c2a42; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #27405f; }

a { text-decoration: none; color: inherit; }

/* ---------- 载入遮罩 ---------- */
.loader {
    position: fixed; inset: 0; z-index: 2000;
    background: var(--bg);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 24px;
    transition: opacity 0.6s ease, visibility 0.6s;
    /* 兜底：即使脚本未执行，3 秒后自动隐藏遮罩 */
    animation: loader-autohide 0.4s ease 3s forwards;
}
@keyframes loader-autohide {
    to { opacity: 0; visibility: hidden; }
}
.loader.done { opacity: 0; visibility: hidden; }
.loader-core {
    width: 44px; height: 44px; border-radius: 50%;
    border: 2px solid rgba(0, 229, 255, 0.15);
    border-top-color: var(--cyan);
    animation: loader-spin 0.9s linear infinite;
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.25);
}
@keyframes loader-spin { to { transform: rotate(360deg); } }
.loader-text {
    font-family: var(--font-mono);
    font-size: 12px; letter-spacing: 5px; color: var(--text-2);
}

/* ---------- 导航 ---------- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; height: 68px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 48px; z-index: 1000;
    background: rgba(4, 6, 12, 0.6);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, background 0.3s;
}
.navbar.scrolled {
    background: rgba(4, 6, 12, 0.9);
    border-bottom-color: var(--border);
}
.nav-brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
    display: flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; border-radius: 10px;
    background: rgba(0, 229, 255, 0.06);
    border: 1px solid rgba(0, 229, 255, 0.18);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.12);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text { font-size: 18px; font-weight: 900; letter-spacing: 1px; }
.logo-sub {
    font-family: var(--font-mono);
    font-size: 9px; letter-spacing: 2.5px; color: var(--cyan);
}
.nav-links { display: flex; gap: 34px; }
.nav-links a {
    color: var(--text-2); font-size: 14px; font-weight: 500;
    position: relative; padding: 4px 0; transition: color 0.25s;
}
.nav-links a::after {
    content: ''; position: absolute; left: 0; right: 100%; bottom: -2px;
    height: 2px; background: linear-gradient(90deg, var(--cyan), var(--blue));
    transition: right 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }

.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span {
    width: 22px; height: 2px; background: var(--text);
    border-radius: 2px; transition: 0.3s;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 36px; padding: 0 20px;
    font-size: 14px; font-weight: 600; font-family: inherit;
    border-radius: 6px; border: 1px solid transparent;
    cursor: pointer; transition: all 0.25s; white-space: nowrap;
}
.btn-lg { height: 50px; padding: 0 30px; font-size: 15px; border-radius: 8px; }
.btn-primary {
    background: linear-gradient(135deg, var(--cyan), var(--blue));
    color: #04121a;
    box-shadow: 0 0 24px rgba(0, 229, 255, 0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 32px rgba(0, 229, 255, 0.4);
}
.btn-outline {
    background: transparent; color: var(--text);
    border-color: rgba(139, 150, 176, 0.4);
}
.btn-outline:hover {
    border-color: var(--cyan); color: var(--cyan);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

/* ---------- Hero ---------- */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: space-between;
    gap: 40px;
    padding: 130px 80px 90px;
    overflow: hidden;
}
.net-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

.gradient-orb { position: absolute; border-radius: 50%; filter: blur(110px); }
.orb-1 {
    width: 560px; height: 560px; top: -160px; right: -120px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.14) 0%, transparent 70%);
}
.orb-2 {
    width: 480px; height: 480px; bottom: -160px; left: -80px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.14) 0%, transparent 70%);
}
.orb-3 {
    width: 320px; height: 320px; top: 40%; left: 42%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    animation: orb-drift 16s ease-in-out infinite;
}
@keyframes orb-drift {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(40px, -30px); }
    66% { transform: translate(-30px, 25px); }
}
.grid-overlay {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(90, 140, 200, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(90, 140, 200, 0.05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, black 30%, transparent 100%);
}
.scanline {
    position: absolute; left: 0; right: 0; height: 120px; top: -120px;
    background: linear-gradient(to bottom, transparent, rgba(0, 229, 255, 0.04), transparent);
    animation: scanline-move 7s linear infinite;
}
@keyframes scanline-move { to { transform: translateY(calc(100vh + 240px)); } }

.hero-content { position: relative; z-index: 2; max-width: 640px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 7px 16px; margin-bottom: 28px;
    background: rgba(0, 229, 255, 0.07);
    border: 1px solid rgba(0, 229, 255, 0.22);
    border-radius: 24px;
    font-size: 13px; color: var(--cyan);
}
.badge-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan);
    animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero-title {
    font-size: 68px; font-weight: 900; line-height: 1.16;
    letter-spacing: 2px; margin-bottom: 26px;
}
.title-line { display: block; }
.title-accent {
    background: linear-gradient(120deg, var(--cyan) 10%, var(--blue) 90%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
}
.hero-subtitle {
    font-size: 17px; color: var(--text-2); line-height: 2;
    margin-bottom: 42px; font-weight: 300;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 64px; flex-wrap: wrap; }

.hero-stats { display: flex; align-items: center; gap: 36px; }
.stat-number {
    font-family: var(--font-mono);
    font-size: 34px; font-weight: 600; color: var(--cyan);
    text-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
}
.stat-label { font-size: 13px; color: var(--text-2); margin-top: 2px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* Hero 视觉：AI 核心 */
.hero-visual {
    position: relative; z-index: 1;
    width: 480px; height: 480px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    perspective: 1100px;
}
.core-container {
    position: relative; width: 320px; height: 320px;
    display: flex; align-items: center; justify-content: center;
    transform-style: preserve-3d;
    animation: core-float 6s ease-in-out infinite;
}
@keyframes core-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}
.core-glow {
    position: absolute; width: 220px; height: 220px; border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.28) 0%, rgba(0, 229, 255, 0.06) 45%, transparent 70%);
    animation: glow-breathe 3.2s ease-in-out infinite;
}
@keyframes glow-breathe {
    0%, 100% { transform: scale(1); opacity: 0.85; }
    50% { transform: scale(1.25); opacity: 0.45; }
}
.core-inner {
    position: absolute; width: 84px; height: 84px; border-radius: 50%;
    background: radial-gradient(circle at 32% 30%, #a5f3fc, var(--cyan) 55%, #0369a1);
    box-shadow: 0 0 70px rgba(0, 229, 255, 0.65), inset 0 0 24px rgba(255, 255, 255, 0.25);
    animation: core-breathe 2.4s ease-in-out infinite;
}
@keyframes core-breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.09); }
}
.orbit-ring {
    position: absolute; border-radius: 50%;
    border: 1px solid rgba(0, 229, 255, 0.16);
    transform-style: preserve-3d;
}
.ring-1 { width: 180px; height: 180px; animation: orbit-x 11s linear infinite; }
.ring-2 { width: 240px; height: 240px; border-color: rgba(59, 130, 246, 0.18); animation: orbit-y 16s linear infinite; }
.ring-3 { width: 300px; height: 300px; animation: orbit-z 22s linear infinite reverse; }
.data-ring { position: absolute; border-radius: 50%; border: 1px dashed rgba(139, 150, 176, 0.16); }
.ring-4 { width: 350px; height: 350px; animation: spin-flat 30s linear infinite; }
.ring-5 { width: 400px; height: 400px; animation: spin-flat 42s linear infinite reverse; }
@keyframes orbit-x {
    from { transform: rotateX(70deg) rotateZ(0); }
    to { transform: rotateX(70deg) rotateZ(360deg); }
}
@keyframes orbit-y {
    from { transform: rotateY(70deg) rotateZ(0); }
    to { transform: rotateY(70deg) rotateZ(360deg); }
}
@keyframes orbit-z {
    from { transform: rotateX(58deg) rotateY(28deg) rotateZ(0); }
    to { transform: rotateX(58deg) rotateY(28deg) rotateZ(360deg); }
}
@keyframes spin-flat { to { transform: rotate(360deg); } }
.orbit-particle {
    position: absolute; top: -4px; left: 50%; margin-left: -4px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--cyan); box-shadow: 0 0 14px var(--cyan);
}
.ring-2 .orbit-particle { background: var(--blue); box-shadow: 0 0 14px var(--blue); }

.orbit-chip {
    position: absolute;
    top: 50%; left: 50%;
    padding: 7px 14px; border-radius: 8px;
    font-size: 12.5px; font-weight: 500; letter-spacing: 1px;
    color: var(--cyan);
    background: rgba(7, 12, 22, 0.85);
    border: 1px solid rgba(0, 229, 255, 0.3);
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
    backdrop-filter: blur(6px);
    white-space: nowrap;
    transform: translate(-50%, -50%);
    animation: chip-float 5s ease-in-out infinite;
}
/* 五个标签以核心为圆心均匀环绕（半径 205px，相邻间隔 72°） */
.chip-1 { margin: -205px 0 0 0; animation-delay: 0s; }
.chip-2 { margin: -63px 0 0 195px; animation-delay: 1.2s; color: #93c5fd; border-color: rgba(59, 130, 246, 0.35); box-shadow: 0 0 18px rgba(59, 130, 246, 0.15); }
.chip-4 { margin: 166px 0 0 121px; animation-delay: 3.4s; }
.chip-3 { margin: 166px 0 0 -121px; animation-delay: 2.4s; color: #93c5fd; border-color: rgba(59, 130, 246, 0.35); box-shadow: 0 0 18px rgba(59, 130, 246, 0.15); }
.chip-5 {
    margin: -63px 0 0 -195px;
    color: #c4b5fd;
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 0 18px rgba(139, 92, 246, 0.2);
    animation-delay: 4.2s;
}
@keyframes chip-float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-12px); }
}

.scroll-hint {
    position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    z-index: 2;
}
.scroll-hint-text {
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: 4px; color: var(--text-2);
}
.scroll-hint-line {
    width: 1px; height: 44px; overflow: hidden; position: relative;
    background: rgba(139, 150, 176, 0.2);
}
.scroll-hint-line::after {
    content: ''; position: absolute; top: -50%; left: 0;
    width: 100%; height: 50%;
    background: var(--cyan);
    animation: scroll-drop 1.8s ease-in-out infinite;
}
@keyframes scroll-drop {
    to { top: 110%; }
}

/* ---------- 技术栈滚动条 ---------- */
.marquee-strip {
    position: relative;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(7, 11, 20, 0.6);
    overflow: hidden;
    padding: 18px 0;
}
.marquee-track {
    display: inline-flex; align-items: center;
    white-space: nowrap;
    animation: marquee 36s linear infinite;
    will-change: transform;
}
.marquee-half {
    display: inline-flex; align-items: center; gap: 34px;
    padding-right: 34px;
}
.marquee-half span {
    font-size: 14px; font-weight: 500; letter-spacing: 1px;
    color: var(--text-2);
    transition: color 0.25s;
}
.marquee-half span:hover { color: var(--cyan); }
.marquee-half i {
    font-style: normal; font-size: 8px; color: rgba(0, 229, 255, 0.5);
}
@keyframes marquee {
    to { transform: translateX(-50%); }
}

/* ---------- 通用 Section ---------- */
section { position: relative; padding: 110px 80px; }
.section-header { text-align: center; margin-bottom: 70px; }
.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px; letter-spacing: 3px;
    color: var(--cyan); margin-bottom: 14px;
}
.section-title { font-size: 40px; font-weight: 900; letter-spacing: 1px; margin-bottom: 16px; }
.section-desc { font-size: 15.5px; color: var(--text-2); max-width: 600px; margin: 0 auto; }

/* 滚动进入动画 */
.reveal {
    opacity: 0; transform: translateY(36px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 核心能力 ---------- */
.services { background: var(--bg); }
.services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
    max-width: 1240px; margin: 0 auto;
}
.service-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 34px 30px;
    transition: transform 0.35s ease, border-color 0.35s, box-shadow 0.35s, background 0.35s;
    overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(0, 229, 255, 0.07), transparent 45%);
    opacity: 0; transition: opacity 0.35s;
    pointer-events: none;
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glow);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45), 0 0 30px rgba(0, 229, 255, 0.08);
    background: rgba(15, 24, 44, 0.7);
}
.service-card:hover::before { opacity: 1; }
.corner {
    position: absolute; width: 14px; height: 14px;
    border-color: rgba(0, 229, 255, 0); border-style: solid;
    transition: border-color 0.35s;
}
.corner.tl { top: 8px; left: 8px; border-width: 1.5px 0 0 1.5px; }
.corner.tr { top: 8px; right: 8px; border-width: 1.5px 1.5px 0 0; }
.corner.bl { bottom: 8px; left: 8px; border-width: 0 0 1.5px 1.5px; }
.corner.br { bottom: 8px; right: 8px; border-width: 0 1.5px 1.5px 0; }
.service-card:hover .corner { border-color: var(--cyan); }
.service-icon {
    width: 52px; height: 52px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 22px;
    color: var(--cyan);
    background: var(--cyan-dim);
    border: 1px solid rgba(0, 229, 255, 0.2);
    box-shadow: 0 0 22px rgba(0, 229, 255, 0.1);
}
.service-icon svg { width: 26px; height: 26px; }
.service-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.5px; }
.service-card p { font-size: 14px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tags span {
    font-family: var(--font-mono);
    font-size: 11px; letter-spacing: 0.5px;
    padding: 4px 10px; border-radius: 5px;
    color: var(--text-2);
    background: rgba(139, 150, 176, 0.08);
    border: 1px solid rgba(139, 150, 176, 0.16);
    transition: color 0.25s, border-color 0.25s;
}
.service-card:hover .service-tags span { color: var(--cyan); border-color: rgba(0, 229, 255, 0.3); }

/* ---------- 服务流程时间线 ---------- */
.process { background: var(--bg-2); }
.timeline { position: relative; max-width: 880px; margin: 0 auto; padding: 10px 0; }
.timeline-line {
    position: absolute; top: 0; bottom: 0; left: 50%;
    width: 2px; margin-left: -1px;
    background: rgba(56, 80, 120, 0.25);
    overflow: hidden;
}
.timeline-progress {
    width: 100%; height: 0;
    background: linear-gradient(to bottom, var(--cyan), var(--blue));
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
    transition: height 0.2s linear;
}
.timeline-item {
    position: relative; width: 50%;
    padding: 26px 56px 26px 0;
    text-align: right;
}
.timeline-item:nth-child(odd of .timeline-item) {
    margin-left: 50%;
    padding: 26px 0 26px 56px;
    text-align: left;
}
.timeline-node {
    position: absolute; top: 34px;
    width: 46px; height: 46px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg);
    border: 1.5px solid rgba(0, 229, 255, 0.4);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
    font-family: var(--font-mono);
    font-size: 13px; font-weight: 600; color: var(--cyan);
    transition: transform 0.3s, box-shadow 0.3s;
}
.timeline-item:nth-child(even of .timeline-item) .timeline-node { right: -23px; }
.timeline-item:nth-child(odd of .timeline-item) .timeline-node { left: -23px; }
.timeline-item:hover .timeline-node {
    transform: scale(1.12);
    box-shadow: 0 0 32px rgba(0, 229, 255, 0.45);
}
.timeline-card {
    display: inline-block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px 28px;
    max-width: 340px;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.timeline-item:hover .timeline-card {
    border-color: var(--border-glow);
    transform: translateY(-3px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}
.timeline-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.timeline-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.8; }

/* ---------- 技术优势 ---------- */
.advantage { background: var(--bg); }
.advantage-layout {
    display: grid; grid-template-columns: 1.05fr 0.95fr;
    gap: 56px; align-items: center;
    max-width: 1180px; margin: 0 auto;
}
.advantage-list { display: flex; flex-direction: column; gap: 14px; }
.adv-item {
    display: flex; gap: 22px; align-items: flex-start;
    padding: 24px 26px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: border-color 0.3s, transform 0.3s;
}
.adv-item:hover { border-color: var(--border-glow); transform: translateX(6px); }
.adv-num {
    font-family: var(--font-mono);
    font-size: 15px; font-weight: 600; color: var(--cyan);
    padding-top: 2px;
    text-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
}
.adv-item h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; }
.adv-item p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

.terminal-card {
    border-radius: 14px; overflow: hidden;
    background: #070a12;
    border: 1px solid var(--border);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 229, 255, 0.05);
    transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
    transition: transform 0.5s ease;
}
.terminal-card:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
.terminal-header {
    display: flex; align-items: center; gap: 7px;
    padding: 13px 18px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}
.t-dot { width: 11px; height: 11px; border-radius: 50%; }
.t-dot.red { background: #ff5f57; }
.t-dot.yellow { background: #febc2e; }
.t-dot.green { background: #28c840; }
.terminal-title {
    margin-left: 10px;
    font-family: var(--font-mono); font-size: 12px; color: var(--text-2);
}
.terminal-body { padding: 22px 22px 26px; font-family: var(--font-mono); font-size: 13px; line-height: 2.15; }
.t-line { color: #c6d2ea; white-space: nowrap; overflow: hidden; }
.t-prompt { color: var(--cyan); margin-right: 8px; }
.t-ok { color: #4ade80; }
.t-cursor {
    display: inline-block; width: 8px; height: 15px;
    background: var(--cyan); vertical-align: -2px;
    animation: cursor-blink 1s steps(1) infinite;
}
@keyframes cursor-blink { 50% { opacity: 0; } }

/* ---------- 关于我们 ---------- */
.about { background: var(--bg-2); }
.company-card {
    position: relative;
    max-width: 820px; margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 56px 70px;
    text-align: center;
    overflow: hidden;
}
.company-glow {
    position: absolute; top: -120px; left: 50%; transform: translateX(-50%);
    width: 480px; height: 240px;
    background: radial-gradient(ellipse, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}
.company-name { font-size: 25px; font-weight: 900; letter-spacing: 2px; margin-bottom: 18px; }
.company-divider {
    width: 64px; height: 2px; margin: 0 auto 28px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}
.company-desc { font-size: 15px; color: var(--text-2); line-height: 2.1; margin-bottom: 36px; }
.company-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.company-tags .tag {
    padding: 7px 18px; border-radius: 22px;
    font-size: 13px; color: var(--cyan);
    background: rgba(0, 229, 255, 0.07);
    border: 1px solid rgba(0, 229, 255, 0.22);
    transition: box-shadow 0.3s, transform 0.3s;
}
.company-tags .tag:hover {
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
    transform: translateY(-2px);
}

/* ---------- 联系我们 ---------- */
.contact { background: var(--bg); }
.contact-inner {
    display: grid; grid-template-columns: 1.2fr 0.8fr;
    gap: 60px; align-items: center;
    max-width: 1100px; margin: 0 auto;
    padding: 60px 64px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 22px;
    position: relative;
}
.contact-inner::before {
    content: ''; position: absolute; inset: -1px; border-radius: 22px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.4), transparent 35%, transparent 65%, rgba(59, 130, 246, 0.4));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    pointer-events: none;
}
.contact-text .section-title { font-size: 34px; }
.contact-items { margin-top: 40px; display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; align-items: baseline; gap: 18px; }
.ci-label {
    flex-shrink: 0; width: 68px;
    font-size: 13px; color: var(--text-2);
}
.ci-value { font-size: 17px; font-weight: 600; letter-spacing: 0.5px; }
.contact-card { text-align: center; }
.qr-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
    height: 220px; border-radius: 16px;
    color: var(--cyan);
    background: rgba(0, 229, 255, 0.05);
    border: 1.5px dashed rgba(0, 229, 255, 0.35);
    font-size: 14px; letter-spacing: 1px;
    transition: box-shadow 0.3s;
}
.qr-placeholder:hover { box-shadow: 0 0 30px rgba(0, 229, 255, 0.15); }
.contact-note { margin-top: 18px; font-size: 12.5px; color: var(--text-2); }

/* ---------- 页脚 ---------- */
.footer {
    padding: 56px 80px 44px;
    border-top: 1px solid var(--border);
    text-align: center;
    background: var(--bg-2);
}
.footer-brand { font-size: 17px; font-weight: 700; letter-spacing: 1px; margin-bottom: 12px; }
.footer-copy { font-size: 12.5px; color: var(--text-2); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
    .hero { flex-direction: column; justify-content: center; text-align: center; padding-top: 130px; gap: 70px; }
    .hero-content { max-width: 720px; }
    .hero-actions, .hero-stats { justify-content: center; }
    .hero-visual { width: 420px; height: 420px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .advantage-layout { grid-template-columns: 1fr; }
    .contact-inner { grid-template-columns: 1fr; padding: 48px 40px; }
}
@media (max-width: 860px) {
    .nav-links {
        position: fixed; top: 68px; left: 0; right: 0;
        flex-direction: column; gap: 0;
        background: rgba(4, 6, 12, 0.97);
        border-bottom: 1px solid var(--border);
        padding: 12px 24px 20px;
        display: none;
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 13px 0; border-bottom: 1px solid rgba(56, 80, 120, 0.15); }
    .nav-cta { display: none; }
    .nav-toggle { display: flex; }
    .navbar { padding: 0 22px; }
    section { padding: 80px 24px; }
    .hero { padding: 120px 24px 80px; }
    .hero-title { font-size: 42px; }
    .hero-subtitle { font-size: 14.5px; }
    .hero-subtitle br { display: none; }
    .hero-stats { gap: 14px; flex-wrap: wrap; }
    .stat-number { font-size: 26px; }
    .stat-label { font-size: 11.5px; }
    .stat-divider { height: 32px; }
    .hero-visual { width: 320px; height: 320px; }
    .core-container { transform: scale(0.78); }
    .chip-1 { margin: -140px 0 0 0; }
    .chip-2 { margin: -43px 0 0 133px; }
    .chip-4 { margin: 113px 0 0 82px; }
    .chip-3 { margin: 113px 0 0 -82px; }
    .chip-5 { margin: -43px 0 0 -133px; }
    .orbit-chip { font-size: 11px; padding: 5px 10px; }
    .services-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 30px; }
    /* 时间线改为单列 */
    .timeline-line { left: 22px; }
    .timeline-item,
    .timeline-item:nth-child(odd of .timeline-item) {
        width: 100%; margin-left: 0;
        padding: 20px 0 20px 64px;
        text-align: left;
    }
    .timeline-item:nth-child(even of .timeline-item) .timeline-node,
    .timeline-item:nth-child(odd of .timeline-item) .timeline-node { left: 0; right: auto; }
    .timeline-card { max-width: none; width: 100%; }
    .company-card { padding: 40px 26px; }
    .terminal-card { transform: none; }
    .terminal-body { overflow-x: auto; }
    .footer { padding: 44px 24px 36px; }
}

/* 网格子元素允许收缩，防止长内容撑破布局 */
.services-grid > *,
.advantage-layout > *,
.contact-inner > * { min-width: 0; }

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

/* 联系信息可点击链接 */
a.ci-value { transition: color 0.25s; }
a.ci-value:hover { color: var(--cyan); }

/* ---------- 微信二维码悬浮弹窗 ---------- */
.qr-placeholder { position: relative; cursor: pointer; }
.qr-popup {
    position: absolute; bottom: calc(100% + 14px); left: 50%;
    width: 220px; padding: 14px 14px 10px;
    background: #ffffff; border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55),
                0 0 0 1px rgba(0, 229, 255, 0.25),
                0 0 24px rgba(0, 229, 255, 0.15);
    opacity: 0;
    transform: translateX(-50%) translateY(8px) scale(0.92);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 50;
}
.qr-popup img { display: block; width: 100%; border-radius: 6px; }
.qr-popup span {
    display: block; text-align: center;
    color: #0b1526; font-size: 12px; letter-spacing: 1px;
    padding-top: 8px;
}
.qr-popup::after {
    content: ''; position: absolute; top: 100%; left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent; border-top-color: #ffffff;
}
.qr-placeholder:hover .qr-popup,
.qr-placeholder.open .qr-popup {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
}

/* ---------- 备案号 ---------- */
.footer-sep { margin: 0 10px; opacity: 0.4; }
.footer-icp-link { color: var(--text-2); transition: color 0.25s; }
.footer-icp-link:hover { color: var(--cyan); }