/* =============================================================
   SYNO-TECH Design System v3.0
   Color: #433290 (Indigo) / #FFFFFF / #999999 (Tungsten)
   ============================================================= */

:root {
    /* Primary palette */
    --indigo:        #433290;
    --indigo-mid:    #5b48b8;
    --indigo-light:  #7b6fd4;
    --indigo-pale:   rgba(67,50,144,0.08);
    --indigo-line:   rgba(67,50,144,0.18);
    --indigo-glow:   rgba(67,50,144,0.30);

    /* Neutral */
    --white:         #ffffff;
    --off-white:     #f8f8fc;
    --tungsten:      #999999;
    --tungsten-dim:  rgba(153,153,153,0.25);
    --deep:          #0a0c18;
    --deep-mid:      #0f1225;
    --deep-card:     rgba(255,255,255,0.04);

    /* Text */
    --text-dark:     #1a1a2e;
    --text-mid:      #444466;
    --text-secondary:#666688;
    --text-light:    #eaedf5;
    --text-muted:    #aaaacc;

    /* Borders */
    --border:        rgba(67,50,144,0.12);
    --border-strong: rgba(67,50,144,0.35);
    --border-light:  rgba(255,255,255,0.08);

    /* Backgrounds */
    --bg-hero:       linear-gradient(135deg, #0a0c18 0%, #0f1225 50%, #130e2a 100%);
    --bg-section:    #ffffff;
    --bg-section-alt:#f8f8fc;
    --nav-bg:        rgba(255,255,255,0.97);

    /* Legacy compat */
    --primary-color: var(--deep);
    --border-color:  var(--border);
    --highlight:     var(--white);
    --teal:          var(--indigo-light);
    --teal-dim:      var(--indigo-pale);
    --navy-card:     var(--deep-card);
    --text-primary:  var(--text-light);
    --success:       #00e090;
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--white);
    color: var(--text-dark);
    line-height: 1.65;
    overflow-x: hidden;
    /* 格式：url(图片路径) 偏移x 偏移y, 备用样式 */
    cursor: url("../images/aaa.png"), auto;
}

::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background: var(--off-white); }
::-webkit-scrollbar-thumb { background: var(--indigo); border-radius:3px; }

/* ── Navigation ─────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 20px rgba(67,50,144,0.06);
    transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 4px 30px rgba(67,50,144,0.12); }

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform 0.3s;
}
.logo:hover { transform: scale(1.05); }
.logoImg { height: 52px; object-fit: contain; }

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-mid);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.3rem 0;
    position: relative;
    transition: color 0.25s;
    letter-spacing: 0.2px;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 2px;
    background: var(--indigo);
    transition: width 0.3s ease;
    border-radius: 1px;
}
.nav-links a:hover,
.nav-links a.active { color: var(--indigo); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: 2rem;
}
.lang-switcher button {
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--indigo);
    padding: 0.32rem 0.72rem;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    border-radius: 4px;
    letter-spacing: 0.5px;
    font-family: inherit;
}
.lang-switcher button:hover { background: var(--indigo-pale); }
.lang-switcher button.active { background: var(--indigo); border-color: var(--indigo); color: #fff; }

/* ── Hero ────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--bg-hero);
}

/* Particle canvas sits behind content */
#particle-canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* Scan-sweep animation: left-to-right soft light */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg,
        transparent 0%,
        rgba(80, 65, 160, 0.12) 45%,
        rgba(140, 128, 220, 0.20) 50%,
        rgba(80, 65, 160, 0.12) 55%,
        transparent 100%);
    background-size: 200% 100%;
    animation: scan-sweep 6s linear infinite;
    z-index: 1;
    pointer-events: none;
}

@keyframes scan-sweep {
    0%   { background-position: -100% 0; }
    100% { background-position: 200% 0; }
}

/* Grid overlay */
.hero::after {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(67,50,144,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(67,50,144,0.05) 1px, transparent 1px);
    background-size: 56px 56px;
    z-index: 1;
    pointer-events: none;
}

/* CT concentric ring decoration */
.hero-rings {
    position: absolute;
    right: -80px; top: 50%;
    transform: translateY(-50%);
    width: 600px; height: 600px;
    z-index: 1;
    pointer-events: none;
    opacity: 0.13;
}
.hero-rings circle {
    fill: none;
    stroke: rgba(123,111,212,0.8);
    stroke-width: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 960px;
    padding: 0 2rem;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(123,111,212,0.9);
    background: rgba(67,50,144,0.12);
    border: 1px solid rgba(67,50,144,0.25);
    padding: 0.38rem 1.1rem;
    border-radius: 100px;
    margin-bottom: 1.8rem;
}
.hero-eyebrow::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(123,111,212,0.9);
    animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
    0%,100% { opacity: 1; }
    50% { opacity: 0.2; }
}

.hero-title {
    font-size: clamp(2.8rem, 6vw, 5.2rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    line-height: 1.12;
    color: #fff;
    text-shadow: 0 0 60px rgba(67,50,144,0.4);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.55);
    margin-bottom: 1.2rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.hero-tagline {
    font-size: clamp(0.88rem, 1.3vw, 1rem);
    color: rgba(255,255,255,0.42);
    margin: 0 auto 3rem;
    max-width: 660px;
    line-height: 1.9;
}

.hero-cta {
    display: flex;
    gap: 1.2rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────── */
.btn {
    padding: 0.82rem 2.1rem;
    border: 1.5px solid rgba(255,255,255,0.35);
    background: #fff;
    color: #433290;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: 0.4px;
    transition: all 0.28s cubic-bezier(0.4,0,0.2,1);
    cursor: pointer;
    display: block;
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    z-index: 0;
    margin: 0 auto;
    width: fit-content;
}
.btn::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(67,50,144,0.6), rgba(91,72,184,0.6));
    opacity: 0;
    transition: opacity 0.28s;
    z-index: -1;
    border-radius: 6px;
}
.btn:hover { border-color: var(--indigo); color:#fff; transform: scale(1.03); }
.btn:hover::after { opacity: 1; }

.btn-primary {
    background: var(--indigo);
    border-color: var(--indigo);
    color: #fff;
    box-shadow: 0 4px 20px rgba(67,50,144,0.38);
}
.btn-primary::after { background: linear-gradient(135deg, #5b48b8, #7b6fd4); }
.btn-primary:hover {
    box-shadow: 0 6px 28px rgba(67,50,144,0.55);
    transform: scale(1.03);
}

/* Light theme btn (for white sections) */
.btn-outline {
    border: 1.5px solid var(--indigo);
    color: var(--indigo);
    background: transparent;
}
.btn-outline::after { background: linear-gradient(135deg, var(--indigo), var(--indigo-mid)); }
.btn-outline:hover { color: #fff; }

/* ── Section ─────────────────────────────────────── */
.section {
    padding: 6rem 6rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Full-bleed wrapper for colored bg sections */
.section-wrap {
    background: var(--bg-section);
}
.section-wrap.alt { background: var(--bg-section-alt); }
.section-wrap.dark { background: var(--deep); }

.section-eyebrow {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    color: var(--indigo);
    text-align: center;
    margin-bottom: 0.65rem;
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.7rem;
    text-align: center;
    color: var(--text-dark);
    letter-spacing: 0.3px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3.5rem;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.divider {
    width: 40px; height: 3px;
    background: linear-gradient(90deg, var(--indigo), var(--indigo-light));
    margin: 0.7rem auto 2.2rem;
    border-radius: 2px;
}

.section-line { width:100%; height:1px; background:linear-gradient(90deg,transparent,var(--border),transparent); margin:0; }

/* Scroll-reveal */
.reveal { opacity:0; transform:translateY(20px); transition:opacity 0.65s ease,transform 0.65s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }
/* Trust Badges */
.trust-badges { display:flex; justify-content:center; gap:1.8rem; flex-wrap:wrap; margin:3rem 0; }
.badge { text-align:center; padding:1.8rem 2.2rem; background:var(--white); border:1px solid var(--border); min-width:140px; border-radius:10px; transition:border-color 0.3s,transform 0.3s,box-shadow 0.3s; box-shadow:0 2px 12px rgba(67,50,144,0.05); }
.badge:hover { border-color:var(--indigo); transform:translateY(-4px); box-shadow:0 8px 24px rgba(67,50,144,0.12); }
.badge-number { font-size:2rem; font-weight:700; color:var(--indigo); margin-bottom:0.3rem; line-height:1; }
.badge-label { font-size:0.78rem; color:var(--text-secondary); letter-spacing:0.5px; }

/* Product Icons */
.product-icons { display:grid; grid-template-columns:repeat(3,1fr); gap:2rem; max-width:1000px; margin:0 auto; padding:0 2rem; }
.product-icon { text-align:center; padding:2.5rem 1.5rem; border:1px solid var(--border); background:var(--white); transition:all 0.35s cubic-bezier(0.4,0,0.2,1); cursor:pointer; border-radius:12px; position:relative; overflow:hidden; box-shadow:0 2px 12px rgba(67,50,144,0.04); }
.product-icon::before { content:''; position:absolute; inset:0; background:linear-gradient(135deg,rgba(67,50,144,0.04),rgba(123,111,212,0.06)); opacity:0; transition:opacity 0.35s; border-radius:12px; }
.product-icon::after { content:''; position:absolute; bottom:0; left:0; right:0; height:2px; background:linear-gradient(90deg,var(--indigo),var(--indigo-light)); transform:scaleX(0); transition:transform 0.35s; }
.product-icon:hover { border-color:var(--indigo-line); transform:scale(1.03); box-shadow:0 10px 30px rgba(67,50,144,0.12); }
.product-icon:hover::before { opacity:1; }
.product-icon:hover::after { transform:scaleX(1); }
.product-icon img { height:128px; object-fit:contain; margin-bottom:1.2rem; }
.product-icon h3 { font-size:1rem; font-weight:600; color:var(--text-dark); }
.product-icon p { font-size:0.85rem; color:var(--text-secondary); margin-top:0.3rem; }
/* News */
.news-hero { padding:9rem 2rem 5rem; text-align:center; background:linear-gradient(180deg,var(--indigo-pale) 0%,transparent 100%); border-bottom:1px solid var(--border); }
.news-filter { display:flex; gap:0.7rem; justify-content:center; flex-wrap:wrap; margin-bottom:3rem; }
.filter-btn { padding:0.45rem 1.3rem; border:1px solid var(--border); background:transparent; color:var(--text-secondary); font-size:0.82rem; font-weight:500; cursor:pointer; border-radius:100px; transition:all 0.25s; font-family:inherit; }
.filter-btn:hover { border-color:var(--indigo); color:var(--indigo); }
.filter-btn.active { background:var(--indigo); border-color:var(--indigo); color:#fff; }
.news-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(320px,1fr)); gap:1.8rem; margin-top:2rem; }
.news-card { background:var(--white); border:1px solid var(--border); border-radius:12px; overflow:hidden; transition:all 0.35s cubic-bezier(0.4,0,0.2,1); cursor:pointer; display:flex; flex-direction:column; box-shadow:0 2px 12px rgba(67,50,144,0.04); }
.news-card:hover { border-color:rgba(67,50,144,0.25); transform:scale(1.03); box-shadow:0 12px 36px rgba(67,50,144,0.12); }
.news-card-img { width:100%; height:190px; background:linear-gradient(135deg,var(--indigo-pale),rgba(153,153,153,0.08)); display:flex; align-items:center; justify-content:center; font-size:3rem; flex-shrink:0; overflow:hidden; }
.news-card-img img { width:100%; height:100%; object-fit:cover;width: auto;height: auto; }
.news-card-body { padding:1.6rem; flex:1; display:flex; flex-direction:column; }
.news-tag { display:inline-block; font-size:0.9rem; font-weight:700; letter-spacing:2px; text-transform:uppercase; padding:0.22rem 0.75rem; border-radius:100px; margin-bottom:0.8rem; }
.news-tag.tag-exhibition { background:rgba(67,50,144,0.08); color:var(--indigo); border:1px solid rgba(67,50,144,0.2); }
.news-tag.tag-feedback { background:rgba(153,153,153,0.1); color:#666; border:1px solid rgba(153,153,153,0.3); }
.news-tag.tag-news { background:rgba(67,50,144,0.05); color:var(--indigo-mid); border:1px solid rgba(67,50,144,0.15); }
.news-card-title { font-size:1.25rem; font-weight:600; color:var(--text-dark); margin-bottom:0.6rem; line-height:3; }
.news-card-excerpt { font-size:0.88rem; color:var(--text-secondary); line-height:1.7; flex:1; margin-bottom:1.1rem; }
.news-card-meta { font-size:1.2rem; color:var(--tungsten); display:flex; gap:1rem; flex-wrap:wrap; }
.news-featured { grid-column:1/-1; display:grid; grid-template-columns:1fr 2fr; min-height:300px; }
.news-featured .news-card-img { height:auto; min-height:300px; }
.news-featured .news-card-body { padding:2.5rem; justify-content:center; }
.news-featured .news-card-title { font-size:1.4rem; }
/* Culture */
.culture-section { padding:6rem 2rem; background:var(--bg-section-alt); }
.culture-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:1.5rem; max-width:1100px; margin:0 auto; }
.culture-card { text-align:center; padding:2.5rem 2rem; background:var(--white); border:1px solid var(--border); border-radius:12px; transition:all 0.35s cubic-bezier(0.4,0,0.2,1); position:relative; overflow:hidden; box-shadow:0 2px 10px rgba(67,50,144,0.04); }
.culture-card::after { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:linear-gradient(90deg,var(--indigo),var(--indigo-light)); transform:scaleX(0); transition:transform 0.35s; }
.culture-card:hover { border-color:rgba(67,50,144,0.3); transform:scale(1.03); box-shadow:0 8px 24px rgba(67,50,144,0.1); }
.culture-card:hover::after { transform:scaleX(1); }
.culture-icon { width:60px; height:60px; border-radius:50%; background:var(--indigo-pale); border:1px solid rgba(67,50,144,0.2); display:flex; align-items:center; justify-content:center; font-size:1.6rem; margin:0 auto 1.4rem; transition:background 0.3s; }
.culture-card:hover .culture-icon { background:rgba(67,50,144,0.14); }
.culture-card h3 { font-size:1.05rem; font-weight:700; color:var(--text-dark); margin-bottom:0.7rem; }
.culture-card p { font-size:0.87rem; color:var(--text-secondary); line-height:1.75; }

.mission-strip { max-width:1100px; margin:4rem auto 0; padding:2.5rem 3rem; background:var(--white); border:1px solid var(--border); border-radius:12px; display:grid; grid-template-columns:1fr auto 1fr auto 1fr; align-items:center; gap:2rem; text-align:center; box-shadow:0 4px 20px rgba(67,50,144,0.06); }
.mission-item h4 { font-size:0.68rem; letter-spacing:3px; text-transform:uppercase; color:var(--indigo); margin-bottom:0.4rem; }
.mission-item p  { font-size:0.95rem; font-weight:600; color:var(--text-dark); line-height:1.4; }
.mission-sep { width:1px; height:50px; background:var(--border); }

/* Contact Form */
.contact-form { max-width:680px; margin:3rem auto; }
.form-group { margin-bottom:1.8rem; }
.form-group label { display:block; margin-bottom:0.45rem; color:var(--text-dark); font-weight:500; font-size:0.85rem; }
.form-group input,.form-group select,.form-group textarea { width:100%; padding:0.9rem 1rem; background:var(--off-white); border:1px solid var(--border); color:var(--text-dark); font-size:0.95rem; font-family:inherit; transition:all 0.25s; border-radius:8px; }
.form-group input:focus,.form-group select:focus,.form-group textarea:focus { outline:none; border-color:var(--indigo); background:#fff; box-shadow:0 0 0 3px rgba(67,50,144,0.08); }
.form-group select option { background:#fff; color:var(--text-dark); }
.form-group textarea { resize:vertical; min-height:110px; }

/* Event Banner */
.event-banner { max-width:880px; margin:0 auto 4rem; padding:3rem; background:linear-gradient(135deg,var(--indigo-pale),rgba(153,153,153,0.04)); border:1px solid rgba(67,50,144,0.2); border-radius:12px; text-align:center; position:relative; overflow:hidden; }
.event-banner h2 { font-size:1.5rem; color:var(--text-dark); margin-bottom:0.4rem; font-weight:700; }
.event-banner p  { color:var(--text-secondary); margin-bottom:1.4rem; font-size:0.92rem; }
.event-meta { display:inline-flex; gap:2.5rem; margin:0.8rem 0 1.4rem; padding:1.1rem 2.2rem; background:var(--white); border:1px solid var(--border); border-radius:8px; flex-wrap:wrap; justify-content:center; }
.event-meta-item { text-align:center; min-width:80px; }
.event-meta-label { font-size:0.67rem; letter-spacing:2px; text-transform:uppercase; color:var(--tungsten); margin-bottom:0.25rem; }
.event-meta-value { font-size:1.4rem; font-weight:700; color:var(--indigo); }

/* Legacy product/partnership pages */
.product-matrix { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:1.8rem; margin-top:3rem; }
.product-card { background:var(--white); border:1px solid var(--border); padding:2.2rem; transition:all 0.3s; position:relative; overflow:hidden; border-radius:12px; box-shadow:0 2px 12px rgba(67,50,144,0.04); }
.product-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:3px; background:linear-gradient(90deg,var(--indigo),var(--indigo-light)); transform:scaleX(0); transition:transform 0.3s; }
.product-card:hover::before { transform:scaleX(1); }
.product-card:hover { border-color:rgba(67,50,144,0.2); transform:scale(1.02); box-shadow:0 8px 24px rgba(67,50,144,0.1); }
.product-card h3 { font-size:1.7rem; margin-bottom:0.4rem; color:var(--indigo); }
.product-card .product-type { font-size:0.82rem; color:var(--text-secondary); margin-bottom:1.2rem; text-transform:uppercase; letter-spacing:1px; }
.product-card .product-for { font-size:0.95rem; margin-bottom:1.2rem; color:var(--text-dark); }
.product-card .product-specs { list-style:none; margin-bottom:1.5rem; }
.product-card .product-specs li { padding:0.45rem 0; color:var(--text-secondary); border-bottom:1px solid var(--border); font-size:0.9rem; }
.product-card .product-specs li:last-child { border-bottom:none; }
.product-card .spec-label { font-weight:600; color:var(--text-dark); margin-right:0.5rem; }
.product-infodiv { display:grid; grid-template-columns:repeat(4,1fr); gap:1rem; margin-top:2rem; }

.partnership-paths { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:2.5rem; margin-top:4rem; }
.path-card { background:var(--white); border:1px solid var(--border); padding:2rem; position:relative; border-radius:12px; box-shadow:0 2px 10px rgba(67,50,144,0.04); }
.path-number { position:absolute; top:-18px; left:28px; width:36px; height:36px; background:var(--indigo); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:1rem; border-radius:50%; }
.path-card h3 { font-size:1.3rem; margin-bottom:0.9rem; margin-top:1rem; color:var(--indigo); }
.path-card p { color:var(--text-secondary); margin-bottom:1.2rem; line-height:1.8; font-size:0.9rem; }
.path-visual { margin:1.5rem 0; padding:1.5rem; background:var(--off-white); border:1px dashed var(--border); text-align:center; min-height:160px; display:flex; align-items:center; justify-content:center; border-radius:8px; }
.path-features { list-style:none; }
.path-features li { padding:0.7rem 0; color:var(--text-secondary); border-bottom:1px solid var(--border); font-size:0.9rem; }
.path-features li:last-child { border-bottom:none; }
.path-features li::before { content:'→'; color:var(--indigo); margin-right:0.5rem; font-weight:bold; }
.partners-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:1.5rem; margin-top:2.5rem; padding:2rem; background:var(--off-white); border:1px solid var(--border); border-radius:12px; }
.partner-logo { padding:1.8rem; background:var(--white); border:1px solid var(--border); display:flex; align-items:center; justify-content:center; min-height:110px; transition:all 0.3s; color:var(--text-secondary); font-size:0.88rem; text-align:center; border-radius:8px; }
.partner-logo:hover { border-color:var(--indigo); box-shadow:0 4px 16px rgba(67,50,144,0.1); }

/* Timeline */
.timeline { position:relative; max-width:1000px; margin:4rem auto; padding:2rem 0; }
.timeline::before { content:''; position:absolute; left:50%; top:0; bottom:0; width:2px; background:linear-gradient(180deg,transparent,var(--border),transparent); transform:translateX(-50%); }
.timeline-item { position:relative; margin-bottom:4rem; width:45%; }
.timeline-item:nth-child(odd)  { left:0;   text-align:right; padding-right:3rem; }
.timeline-item:nth-child(even) { left:55%; text-align:left;  padding-left:3rem; }
.timeline-year { font-size:1.9rem; font-weight:700; color:var(--indigo); margin-bottom:0.4rem; }
.timeline-content { color:var(--text-secondary); line-height:1.8; font-size:1.1rem; }
.timeline-item::after { content:''; position:absolute; width:14px; height:14px; background:var(--indigo); border-radius:50%; top:6px; border:3px solid var(--white); box-shadow:0 0 0 2px var(--indigo); }
.timeline-item:nth-child(odd)::after  { right:-7px; }
.timeline-item:nth-child(even)::after { left:-7px; }

/* Footer */
.footer { background:var(--white); padding:3rem 2rem; text-align:center; border-top:1px solid var(--border); margin-top:4rem; }
.footer-content { max-width:1400px; margin:0 auto; }
.footer p { color:var(--text-secondary); margin-bottom:1rem; font-size:0.85rem; }
.footer-links { display:flex; justify-content:center; gap:2rem; list-style:none; margin-top:1rem; flex-wrap:wrap; }
.footer-links a { color:var(--indigo); text-decoration:none; font-size:0.85rem; transition:color 0.25s; font-weight:500; }
.footer-links a:hover { color:var(--indigo-mid); }
.Weixin-QR {
    /* 隐藏 */
    display: none;
    /* 绝对定位，显示在旁边 */
    position: absolute;
    margin-left: 10px;
    /* 美化 */
    padding: 8px;
    background: white;
    border: 1px solid #eee;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    width: 100px;
    left: -50px;
    top: -110px;
}
.Weixin-wrapper{
    cursor: pointer;
    width: 30px;
}
.Weixin-wrapper:hover ~ .Weixin-QR{
    display:block;
}
.Twitter-QR {
    /* 隐藏 */
    display: none;
    /* 绝对定位，显示在旁边 */
    position: absolute;
    margin-left: 10px;
    /* 美化 */
    padding: 8px;
    background: white;
    border: 1px solid #eee;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    width: 100px;
    left: -50px;
    top: -110px;
}
.Twitter-wrapper{
    cursor: pointer;
    width: 30px;
}
.Twitter-wrapper:hover ~ .Twitter-QR{
    display:block;
}

/* Animations */
@keyframes fadeInUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }
.fade-in-up { animation:fadeInUp 0.7s ease-out both; }

/* Responsive */
@media (max-width:1024px) {
    .mission-strip { grid-template-columns:1fr; }
    .mission-sep { display:none; }
    .news-featured { grid-template-columns:1fr; }
    .news-featured .news-card-img { min-height:220px; }
}
@media (max-width:768px) {
    .nav-container { flex-wrap:wrap; padding:10px 1.2rem; height:auto; gap:0.5rem; }
    .logoImg { height:40px; }
    .nav-links { gap:1rem; font-size:0.82rem; flex-wrap:wrap; }
    .lang-switcher { margin-left:auto; }
    .hero-title { font-size:2.2rem; }
    .product-icons { grid-template-columns:1fr; gap:1.5rem; }
    .product-matrix { grid-template-columns:1fr; }
    .product-infodiv { display:block; }
    .partnership-paths { grid-template-columns:1fr; }
    .culture-grid { grid-template-columns:1fr; }
    .news-grid { grid-template-columns:1fr; }
    .timeline::before { left:20px; }
    .timeline-item { width:100%; left:0!important; text-align:left!important; padding-left:3rem!important; padding-right:0!important; }
    .timeline-item::after { left:12px!important; }
    .mission-strip { padding:2rem 1.5rem; }
    .trust-badges { gap:1rem; }
}

/* Utility */
.text-center { text-align:center; }
.mt-4 { margin-top:2rem; }
.mb-4 { margin-bottom:2rem; }
.text-indigo { color:var(--indigo); }
.text-muted { color:var(--text-secondary); }

/* ── Mobile Responsive (comprehensive) ─────────────── */
@media (max-width:480px) {
    .nav-container { padding:8px 1rem; }
    .nav-links { display:none; }
    .hero-title { font-size:1.8rem; letter-spacing:0; }
    .hero-subtitle { font-size:0.95rem; }
    .hero-tagline { font-size:0.82rem; }
    .hero-cta { flex-direction:column; align-items:center; gap:0.8rem; }
    .btn { width:100%; max-width:280px; text-align:center; }
    .section { padding:3rem 1rem; }
    .section-title { font-size:1.4rem; }
    .badge { min-width:100px; padding:1.2rem 1rem; }
    .badge-number { font-size:1.5rem; }
    .trust-badges { gap:0.8rem; }
    .product-icons { grid-template-columns:1fr; gap:1rem; padding:0 0.5rem; }
    .news-grid { grid-template-columns:1fr; gap:1rem; }
    .news-featured { grid-template-columns:1fr !important; }
    .news-featured .news-card-img { min-height:160px; }
    .news-featured .news-card-body { padding:1.2rem; }
    .event-banner { padding:1.5rem 1rem; }
    .event-meta { gap:1rem; padding:0.8rem 1rem; }
    .event-meta-value { font-size:1rem; }
    .footer-links { gap:1rem; flex-wrap:wrap; justify-content:center; }
    .about-grid { grid-template-columns:1fr !important; gap:2rem !important; }
    .about-cards { grid-template-columns:1fr 1fr !important; margin-top:0 !important; }
    .mission-strip { grid-template-columns:1fr; padding:1.5rem 1rem; }
    .contact-form { padding:0 0.5rem; }
    .culture-grid { grid-template-columns:1fr; }
    .hero-rings { display:none; }
    .section-eyebrow { font-size:0.65rem; }
}

@media (max-width:768px) {
    /* Nav */
    .nav-container { flex-wrap:wrap; padding:10px 1.2rem; height:auto; gap:0.5rem; }
    .logoImg { height:40px; }
    .nav-links { gap:0.8rem; font-size:0.8rem; flex-wrap:wrap; width:100%; justify-content:center; }
    .lang-switcher { margin-left:auto; }

    /* Hero */
    .hero { min-height:100svh; padding-top:80px; }
    .hero-title { font-size:2rem; }
    .hero-subtitle { font-size:1rem; }
    .hero-tagline { font-size:0.88rem; padding:0 0.5rem; }
    .hero-cta { gap:0.9rem; }
    .hero-rings { width:300px; height:300px; right:-60px; opacity:0.07; }

    /* Sections */
    .section { padding:4rem 1.2rem; }
    .section-subtitle { margin-bottom:2rem; }

    /* Products */
    .product-icons { grid-template-columns:1fr; gap:1.2rem; padding:0; }
    .product-matrix { grid-template-columns:1fr; }
    .product-infodiv { display:block; }

    /* About inline grid fix */
    .about-grid { grid-template-columns:1fr !important; gap:2.5rem !important; }
    .about-cards { grid-template-columns:1fr 1fr !important; margin-top:0 !important; }
    .about-cards > div { margin-top:0 !important; }

    /* News */
    .news-grid { grid-template-columns:1fr; }
    .news-featured { grid-template-columns:1fr !important; }
    .news-featured .news-card-img { min-height:200px; height:200px !important; }

    /* Partnership */
    .partnership-paths { grid-template-columns:1fr; }
    .partners-grid { grid-template-columns:1fr 1fr; }

    /* Culture */
    .culture-grid { grid-template-columns:1fr 1fr; }

    /* Timeline */
    .timeline::before { left:20px; }
    .timeline-item { width:100%; left:0!important; text-align:left!important; padding-left:3rem!important; padding-right:0!important; }
    .timeline-item::after { left:12px!important; right:auto!important; }

    /* Mission */
    .mission-strip { grid-template-columns:1fr; padding:2rem 1.5rem; }
    .mission-sep { display:none; }

    /* Trust badges */
    .trust-badges { gap:0.8rem; }
    .badge { min-width:120px; padding:1.4rem 1rem; }

    /* Event banner */
    .event-banner { padding:2rem 1.2rem; margin:0 0 3rem; }
    .event-meta { gap:1.2rem; padding:0.9rem 1.2rem; }

    /* Footer */
    .footer-links { gap:1.2rem; flex-wrap:wrap; justify-content:center; }

    /* Contact */
    .contact-form { margin:2rem auto; }
}

@media (max-width:1024px) {
    .mission-strip { grid-template-columns:1fr; }
    .mission-sep { display:none; }
    .news-featured { grid-template-columns:1fr 1fr; }
    .news-featured .news-card-img { min-height:220px; }
    .about-grid { grid-template-columns:1fr 1fr !important; gap:3rem !important; }
}

/* Mobile hamburger menu */
@media (max-width:640px) {
    .nav-links { display:none; }
    .nav-links.open { display:flex; }
    .nav-hamburger {
        display:flex;
        flex-direction:column;
        gap:5px;
        cursor:pointer;
        padding:4px;
        background:none;
        border:none;
    }
    .nav-hamburger span {
        display:block;
        width:24px;
        height:2px;
        background:var(--indigo);
        border-radius:2px;
        transition:all 0.3s;
    }
}

/* Hamburger hidden on desktop */
@media (min-width:641px) {
    .nav-hamburger { display:none; }
}

/* Mobile nav dropdown overlay */
@media (max-width:640px) {
    .nav-links.open {
        position:fixed;
        top:60px;
        left:0; right:0;
        background:rgba(255,255,255,0.98);
        flex-direction:column;
        padding:1.5rem 2rem;
        gap:1.2rem;
        z-index:999;
        border-bottom:1px solid var(--border);
        box-shadow:0 8px 24px rgba(67,50,144,0.1);
        width:100%;
    }
    .nav-links.open a {
        font-size:1rem;
        padding:0.5rem 0;
        border-bottom:1px solid var(--border);
        display:block;
        width:100%;
    }
}