/* ============================================================
   映路验厂 · IBM Carbon 设计语言
   白底 / IBM 蓝 #0f62fe / 直角瓦片 / IBM Plex Sans / 细体大标题
   ============================================================ */
:root {
    --primary:#0f62fe; --primary-hover:#0050e6; --primary-active:#0043ce;
    --ink:#161616; --ink-muted:#525252; --ink-subtle:#6f6f6f; --ink-faint:#8d8d8d;
    --canvas:#ffffff; --surface-1:#f4f4f4; --surface-2:#e8e8e8; --surface-3:#e0e0e0;
    --hairline:#e0e0e0; --hairline-strong:#8d8d8d; --inverse:#161616;
    --success:#24a148; --warning:#f1c21b; --error:#da1e28;
    --field:#f4f4f4;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 48px; }
body {
    font-family:'IBM Plex Sans','Noto Sans SC','Segoe UI',-apple-system,sans-serif;
    background:var(--canvas); color:var(--ink-muted); line-height:1.6;
    -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a { text-decoration:none; color:inherit; }
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible {
    outline:2px solid var(--primary); outline-offset:1px; border-radius:0;
}
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

/* ---------- Navbar (IBM 黑色顶栏) ---------- */
.navbar {
    position:fixed; top:0; left:0; right:0; z-index:1000;
    background:var(--inverse); border-bottom:1px solid #393939;
    transition:background 0.2s;
}
.navbar.scrolled { background:var(--inverse); border-bottom:1px solid #393939; }
.nav-container {
    max-width:1200px; margin:0 auto; padding:0 24px;
    height:48px; display:flex; align-items:center; justify-content:space-between;
}
.logo { display:flex; align-items:center; gap:8px; font-weight:600; font-size:15px; color:#fff;
    letter-spacing:0.01em; }
.logo svg { color:#fff; }
.logo-img { height:30px; width:auto; display:block; }
.navbar.scrolled .logo { color:#fff; }
.navbar.scrolled .logo svg { color:#fff; }
.nav-links { display:flex; gap:0; height:100%; }
.nav-links a { font-size:14px; color:#c6c6c6; transition:all 0.11s;
    display:flex; align-items:center; padding:0 16px; height:48px;
    border-bottom:2px solid transparent; }
.nav-links a:hover { color:#fff; background:#262626; }
.nav-links a.active { color:#fff; border-bottom-color:var(--primary); }
.navbar.scrolled .nav-links a { color:#c6c6c6; }
.navbar.scrolled .nav-links a:hover,.navbar.scrolled .nav-links a.active { color:#fff; }
.nav-cta-btn {
    background:var(--primary); color:#fff; border:none;
    padding:0 16px; height:48px; display:flex; align-items:center;
    border-radius:0; font-size:14px; font-weight:400; cursor:pointer;
    transition:background 0.11s; font-family:inherit;
}
.navbar.scrolled .nav-cta-btn { background:var(--primary); color:#fff; }
.nav-cta-btn:hover { background:var(--primary-hover); }
.navbar.scrolled .nav-cta-btn:hover { background:var(--primary-hover); }

/* ---------- Hamburger ---------- */
.hamburger {
    display:none; width:24px; height:18px; background:none; border:none;
    cursor:pointer; padding:0; position:relative; z-index:1100;
}
.hamburger span {
    display:block; width:100%; height:2px; background:#fff;
    position:absolute; left:0; transition:all 0.3s; border-radius:0;
}
.hamburger span:nth-child(1) { top:0; }
.hamburger span:nth-child(2) { top:50%; transform:translateY(-50%); }
.hamburger span:nth-child(3) { bottom:0; }
.navbar.scrolled .hamburger span { background:#fff; }
.hamburger.open span:nth-child(1) { top:50%; transform:translateY(-50%) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity:0; }
.hamburger.open span:nth-child(3) { top:50%; transform:translateY(-50%) rotate(-45deg); }

/* ---------- Mobile Menu ---------- */
.mobile-menu {
    display:none; position:fixed; top:48px; left:0; right:0; bottom:0;
    background:var(--inverse);
    flex-direction:column; align-items:stretch; justify-content:flex-start; gap:0;
    z-index:1050; opacity:0; pointer-events:none; transition:opacity 0.25s;
    padding:8px 0;
}
.mobile-menu.open { opacity:1; pointer-events:auto; }
.mobile-menu a {
    font-size:16px; color:#c6c6c6; padding:16px 24px;
    border-radius:0; transition:all 0.15s; font-weight:400;
    border-left:3px solid transparent;
}
.mobile-menu a:hover { color:#fff; background:#262626; border-left-color:var(--primary); }
.mobile-menu .mobile-cta {
    margin-top:8px; background:var(--primary); color:#fff; border-radius:0;
    padding:16px 24px; font-weight:400; border-left:3px solid transparent;
}
.mobile-menu .mobile-cta:hover { background:var(--primary-hover); }

/* ---------- Hero ---------- */
.hero {
    position:relative; min-height:78vh; display:flex;
    align-items:center; justify-content:flex-start;
    padding:48px 24px 0; text-align:left;
    overflow:hidden;
}
.hero-slider { position:absolute; inset:0; z-index:0; }
.hero-slide {
    position:absolute; inset:0;
    background-size:cover; background-position:center;
    background-color:#161616;
    opacity:0; transition:opacity 1.5s ease-in-out;
}
.hero-slide.active { opacity:1; }
.hero-slide-overlay {
    background:linear-gradient(90deg,
        rgba(22,22,22,0.92) 0%,
        rgba(22,22,22,0.78) 42%,
        rgba(22,22,22,0.45) 70%,
        rgba(22,22,22,0.25) 100%);
    opacity:1 !important;
}

/* Slider dots (IBM 方块指示器) */
.hero-indicators {
    position:absolute; bottom:32px; left:50%;
    transform:translateX(-50%); z-index:3;
    display:flex; gap:8px;
}
.hero-dot {
    width:28px; height:4px; border-radius:0;
    background:rgba(255,255,255,0.3); border:none;
    cursor:pointer; padding:0; transition:all 0.3s;
}
.hero-dot.active { background:var(--primary); transform:none; box-shadow:none; }

.hero-particles { display:none; }
.hero-bg-visual { display:none; }
.hero-glow { display:none; }

.hero-content { position:relative; z-index:2; margin-top:0; max-width:1200px; width:100%;
    margin-left:auto; margin-right:auto; }
.hero .badge {
    display:inline-flex; align-items:center; gap:6px;
    padding:6px 12px; border-radius:0;
    background:rgba(15,98,254,0.16); border:1px solid rgba(69,137,255,0.5);
    font-size:13px; color:#a6c8ff; margin-bottom:24px; letter-spacing:0.01em;
    font-weight:400; backdrop-filter:none;
}
.hero h1 {
    font-size:clamp(40px,6vw,60px); font-weight:300; line-height:1.1;
    letter-spacing:-0.02em; color:#fff; margin-bottom:20px;
    text-shadow:none; max-width:780px;
}
.hero .gradient {
    color:#78a9ff;
    background:none; -webkit-text-fill-color:#78a9ff;
}
.hero .subtitle { font-size:18px; color:#c6c6c6; margin-bottom:36px; line-height:1.6;
    text-shadow:none; max-width:600px; font-weight:300; }
.hero-actions { display:flex; gap:1px; justify-content:flex-start; margin-bottom:56px; }
.btn {
    display:inline-flex; align-items:center; gap:48px; padding:14px 16px;
    border-radius:0; font-size:14px; font-weight:400; cursor:pointer;
    transition:background 0.11s; border:none; font-family:inherit;
    letter-spacing:0.01em; min-width:180px; justify-content:space-between;
}
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-hover); transform:none; box-shadow:none; }
.btn-secondary { background:transparent; color:#fff; border:1px solid #fff; padding:13px 16px; }
.btn-secondary:hover { background:rgba(255,255,255,0.1); }

.stats {
    display:inline-flex; align-items:stretch; justify-content:flex-start; gap:1px;
    background:rgba(255,255,255,0.16); backdrop-filter:none;
    border:none; border-radius:0;
    padding:0;
}
.stat { text-align:left; background:rgba(22,22,22,0.6); padding:16px 28px 16px 18px;
    border-top:2px solid var(--primary); }
.stat-num { font-size:32px; font-weight:300; color:#fff; letter-spacing:-0.01em;
    text-shadow:none; font-variant-numeric:tabular-nums; line-height:1; }
.stat-label { font-size:13px; color:#c6c6c6; margin-top:8px; }
.stat-divider { display:none; }

/* ---------- Sections ---------- */
section { padding:80px 0; position:relative; }
section:not(:last-child)::after {
    content:''; position:absolute; bottom:0; left:24px; right:24px;
    width:auto; height:1px; background:var(--hairline);
}
.section-header { text-align:left; margin-bottom:48px; max-width:1200px;
    margin-left:auto; margin-right:auto; padding:0 24px; }
.section-header .badge {
    display:inline-block; padding:0; border-radius:0;
    background:none; border:none; border-left:3px solid var(--primary);
    padding-left:12px;
    font-size:13px; color:var(--primary); letter-spacing:0.02em; font-weight:600;
    margin-bottom:16px; text-transform:none;
}
.section-header h2 {
    font-size:40px; font-weight:300; color:var(--ink);
    letter-spacing:-0.02em; margin-bottom:12px; line-height:1.15;
}
.section-header p { font-size:16px; color:var(--ink-subtle); max-width:600px; margin:0; }

/* ---------- Services ---------- */
.services { padding-top:72px; background:var(--canvas); }
.main-tabs {
    display:flex; justify-content:flex-start; gap:0; margin-bottom:0;
    background:var(--canvas); border-bottom:1px solid var(--hairline);
    border-radius:0; padding:0; max-width:1200px; margin-left:auto; margin-right:auto;
    padding-left:24px; padding-right:24px; flex-wrap:wrap;
}
.main-tab {
    flex:0 0 auto; display:flex; align-items:center; justify-content:center; gap:7px;
    padding:14px 20px; border-radius:0; background:transparent; border:none;
    border-bottom:2px solid transparent; margin-bottom:-1px;
    color:var(--ink-subtle); font-size:14px; font-weight:400; cursor:pointer;
    transition:all 0.11s; font-family:inherit;
}
.main-tab:hover { color:var(--ink); background:var(--surface-1); }
.main-tab.active { background:transparent; color:var(--ink); box-shadow:none;
    border-bottom-color:var(--primary); font-weight:600; }
.main-tab svg { flex-shrink:0; }

.tab-content { display:none; padding-top:40px; }
.tab-content.active { display:block; }
.tab-panel { opacity:0; transition:opacity 0.3s ease; }
.tab-panel.active { opacity:1; }

/* ---------- Service groups (瀑布流) ---------- */
.svc-group { max-width:1200px; margin:0 auto 56px; padding:0 24px; }
.svc-group:last-child { margin-bottom:0; }
.svc-cat-title {
    font-size:22px; font-weight:600; color:var(--ink); letter-spacing:-0.01em;
    margin-bottom:24px; padding-left:14px; border-left:4px solid var(--primary);
    line-height:1.2;
}
.svc-group .cards-grid { padding:0; }

.sub-tabs { display:flex; justify-content:flex-start; gap:1px; margin-bottom:32px;
    max-width:1200px; margin-left:auto; margin-right:auto; padding:0 24px; }
.sub-tab {
    padding:9px 18px; border-radius:0; background:var(--surface-1);
    border:1px solid transparent; color:var(--ink-subtle);
    font-size:13px; font-weight:400; cursor:pointer; transition:all 0.11s;
    font-family:inherit;
}
.sub-tab:hover { color:var(--ink); background:var(--surface-2); }
.sub-tab.active { background:var(--ink); color:#fff; border-color:var(--ink); }

.cards-grid {
    display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
    max-width:1200px; margin:0 auto; padding:0 24px;
    background:transparent;
}
.card {
    position:relative; background:var(--surface-1);
    border:1px solid transparent; border-radius:0;
    padding:20px; transition:all 0.15s; overflow:hidden; cursor:pointer;
    display:flex; gap:18px; align-items:center;
    border-top:2px solid transparent;
}
.card::before { display:none; }
.card:hover { border-color:var(--hairline); background:var(--canvas);
    transform:none; box-shadow:0 0 0 1px var(--hairline);
    border-top-color:var(--primary);
}
.card.highlight { background:var(--canvas); border-top:2px solid var(--primary);
    box-shadow:0 0 0 1px var(--hairline); }
.card.highlight::before { display:none; }
.card-badge {
    position:absolute; top:0; left:0; right:auto;
    background:var(--primary); color:#fff;
    font-size:11px; font-weight:600; padding:3px 10px; border-radius:0;
    z-index:1; letter-spacing:0.04em;
}
.card-left { flex:0 0 150px; min-height:120px; display:flex; flex-direction:column;
    align-items:center; justify-content:center; }
.card-logo {
    width:150px; height:120px; display:flex;
    align-items:center; justify-content:center;
    background:#fff; border-radius:0;
    border:1px solid var(--hairline);
    padding:14px;
}
.card-logo img { width:100%; height:100%; object-fit:contain; filter:none; opacity:1; }
.card-icon {
    width:120px; height:120px;
    display:flex; align-items:center; justify-content:center;
    background:#fff; border-radius:0;
    border:1px solid var(--hairline);
}
.card-icon svg { width:56px; height:56px; }
.icon-blue { background:#edf5ff; color:var(--primary); }
.icon-purple { background:#edf5ff; color:var(--primary); }
.icon-cyan { background:#edf5ff; color:var(--primary); }
.card-right { flex:1; min-width:0; padding-top:0; }
.card h3 { font-size:18px; font-weight:600; color:var(--ink); margin-bottom:8px; letter-spacing:-0.01em; }
.card p { font-size:14px; color:var(--ink-subtle); line-height:1.5; margin-bottom:14px; }
.card-link { font-size:14px; color:var(--primary); font-weight:400; transition:gap 0.15s;
    display:inline-flex; align-items:center; gap:6px; }
.card:hover .card-link { gap:10px; }
.card-link:hover { color:var(--primary-hover); }

/* ---------- Brand Logos ---------- */
.brands { background:var(--surface-1); }
.brand-category { margin-bottom:40px; max-width:1200px; margin-left:auto; margin-right:auto; }
.brand-cat-title {
    text-align:left; font-size:14px; font-weight:600; color:var(--ink);
    margin-bottom:16px; letter-spacing:0.01em; padding:0 24px;
    border-left:3px solid var(--primary); margin-left:24px; padding-left:12px;
}
.brand-logos {
    display:flex; flex-wrap:wrap; justify-content:flex-start; gap:1px;
    max-width:1200px; margin:0 auto; padding:0 24px;
    background:transparent;
}
.brand-logo {
    width:128px; height:72px; display:flex; align-items:center; justify-content:center;
    background:var(--canvas); border:1px solid var(--hairline); border-radius:0;
    transition:all 0.15s; position:relative; overflow:hidden;
    padding:10px;
}
.brand-logo img {
    max-width:88%; max-height:100%; object-fit:contain;
    transition:all 0.15s; filter:grayscale(1); opacity:0.55;
}
.brand-logo span {
    position:absolute; bottom:0; left:0; right:0; text-align:center;
    font-size:9px; color:var(--ink-faint); font-weight:500; padding:2px 0 4px;
    background:linear-gradient(transparent, var(--canvas));
}
.brand-logo:hover {
    border-color:var(--primary); background:var(--canvas);
    transform:none; box-shadow:0 0 0 1px var(--primary); z-index:1;
}
.brand-logo:hover img { filter:grayscale(0); opacity:1; }

/* ---------- Cases ---------- */
.cases { background:var(--canvas); }
.cases-grid {
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    max-width:1200px; margin:0 auto; padding:0 24px; background:var(--hairline);
}
.case-card {
    background:var(--canvas); border:none;
    border-radius:0; padding:28px 24px; transition:all 0.15s; position:relative;
    border-top:2px solid transparent;
}
.case-card:hover { background:var(--surface-1); transform:none;
    box-shadow:none; border-top-color:var(--primary);
}
.case-tag {
    display:inline-block; padding:3px 10px; border-radius:0;
    background:#edf5ff; color:var(--primary);
    font-size:11px; font-weight:600; margin-bottom:14px; letter-spacing:0.02em;
}
.case-card h3 { font-size:16px; font-weight:600; color:var(--ink); margin-bottom:8px; }
.case-card p { font-size:13px; color:var(--ink-subtle); line-height:1.55; margin-bottom:16px; }
.case-result {
    display:inline-block; padding:4px 12px; border-radius:0;
    background:#defbe6; color:#0e6027;
    font-size:12px; font-weight:600;
}

/* ---------- Process ---------- */
.process { background:var(--surface-1); }
.process-steps {
    display:flex; align-items:stretch; justify-content:center;
    gap:1px; max-width:1200px; margin:0 auto; padding:0 24px;
    flex-wrap:wrap; background:transparent;
}
.step {
    flex:1; min-width:170px; max-width:220px; text-align:left;
    padding:32px 24px; background:var(--canvas);
    border:1px solid var(--hairline); border-radius:0;
    transition:all 0.15s; border-top:2px solid var(--primary);
}
.step:hover { background:#fff; transform:none; box-shadow:0 0 0 1px var(--primary); z-index:1; }
.step-num {
    font-size:14px; font-weight:600; color:var(--primary);
    margin-bottom:16px; letter-spacing:0; width:auto; height:auto;
    display:block; background:none; border-radius:0;
    font-variant-numeric:tabular-nums;
}
.step:hover .step-num { transform:none; box-shadow:none; }
.step h3 { font-size:16px; font-weight:600; color:var(--ink); margin-bottom:8px; }
.step p { font-size:13px; color:var(--ink-subtle); line-height:1.55; }
.step-line { display:none; }
.step-arrow { display:flex; align-items:center; color:var(--primary); flex-shrink:0; align-self:center; }

/* ---------- Advantages ---------- */
.advantages { background:var(--canvas); }
.adv-grid {
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    max-width:1200px; margin:0 auto; padding:0 24px; background:var(--hairline);
}
.adv-item {
    text-align:left; padding:36px 24px;
    background:var(--canvas); border:none;
    border-radius:0; transition:all 0.15s; border-top:2px solid transparent;
}
.adv-item:hover { background:var(--surface-1); transform:none; border-top-color:var(--primary); }
.adv-icon {
    width:48px; height:48px; border-radius:0; margin:0 0 18px;
    display:flex; align-items:center; justify-content:center;
    background:#edf5ff; color:var(--primary);
}
.adv-item h3 { font-size:18px; font-weight:600; color:var(--ink); margin-bottom:8px; }
.adv-item p { font-size:14px; color:var(--ink-subtle); line-height:1.55; }

/* ---------- Contact ---------- */
.contact { padding:80px 0; background:var(--surface-1); }
.contact-inner {
    max-width:1200px; margin:0 auto; padding:0 24px;
    display:grid; grid-template-columns:1fr 1fr; gap:64px;
}
.contact-left h2 {
    font-size:40px; font-weight:300; color:var(--ink);
    letter-spacing:-0.02em; margin-bottom:16px; line-height:1.15;
}
.contact-left>p { font-size:16px; color:var(--ink-subtle); margin-bottom:40px; line-height:1.6; }
.contact-info { display:flex; flex-direction:column; gap:1px; background:var(--hairline);
    border:1px solid var(--hairline); }
.contact-item {
    display:flex; align-items:center; gap:14px; color:var(--ink); font-size:15px;
    background:var(--canvas); padding:18px 20px;
}
.contact-item svg { color:var(--primary); flex-shrink:0; }

.contact-right {
    background:var(--canvas); border:1px solid var(--hairline);
    border-radius:0; padding:36px; border-top:2px solid var(--primary);
}
.form-group { margin-bottom:24px; }
.form-group label {
    display:block; font-size:13px; font-weight:400; color:var(--ink-muted); margin-bottom:8px;
}
.form-group input,.form-group textarea {
    width:100%; padding:13px 16px; border-radius:0;
    background:var(--field); border:none; border-bottom:1px solid var(--hairline-strong);
    color:var(--ink); font-size:15px; font-family:inherit;
    transition:all 0.11s; outline:none;
}
.form-group input:focus,.form-group textarea:focus { border-bottom:2px solid var(--primary); background:var(--field); }
.form-group textarea { resize:vertical; }
.form-group input.invalid,.form-group textarea.invalid { border-bottom:2px solid var(--error); outline:none; }
.form-error {
    display:none; font-size:12px; color:var(--error); margin-top:6px;
}
.form-group input.invalid ~ .form-error,
.form-group textarea.invalid ~ .form-error { display:block; }
.btn-block { width:100%; justify-content:space-between; padding:15px 16px; font-size:14px; min-width:0; }

/* ---------- Footer ---------- */
.footer {
    border-top:1px solid var(--hairline); padding:64px 0 32px; background:var(--canvas);
}
.footer-inner {
    max-width:1200px; margin:0 auto; padding:0 24px;
    display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px;
    margin-bottom:48px;
}
.footer-logo { display:flex; align-items:center; gap:8px; font-weight:600; font-size:15px; color:var(--ink); margin-bottom:14px; }
.footer-logo svg { color:var(--primary); }
.footer-logo-img { height:26px; width:auto; display:block; }
.footer-col>p { font-size:13px; color:var(--ink-subtle); line-height:1.65; }
.footer-col h4 { font-size:13px; font-weight:600; color:var(--ink); margin-bottom:16px; text-transform:none; letter-spacing:0.01em; }
.footer-col a { display:block; font-size:14px; color:var(--ink-subtle); padding:5px 0; transition:color 0.11s; }
.footer-col a:hover { color:var(--primary); }
.footer-bottom {
    max-width:1200px; margin:0 auto; padding:24px 24px 0;
    border-top:1px solid var(--hairline);
    text-align:center; font-size:13px; color:var(--ink); font-weight:700; line-height:1.9;
}
.footer-bottom a { color:var(--ink); font-weight:700; }
.footer-bottom a:hover { color:var(--primary); }

/* ---------- Back to top ---------- */
.back-to-top {
    position:fixed; bottom:0; right:0; z-index:900;
    width:48px; height:48px; border-radius:0;
    background:var(--ink); border:none;
    color:#fff; cursor:pointer; display:flex;
    align-items:center; justify-content:center;
    opacity:0; pointer-events:none; transition:all 0.2s;
    box-shadow:none;
}
.back-to-top.visible { opacity:1; pointer-events:auto; }
.back-to-top:hover { background:var(--primary); color:#fff; transform:none; }

/* ---------- Article Modal ---------- */
.modal-overlay {
    position:fixed; inset:0; z-index:2000;
    background:rgba(22,22,22,0.7);
    display:flex; align-items:center; justify-content:center;
    padding:24px; opacity:0; pointer-events:none; transition:opacity 0.2s;
}
.modal-overlay.open { opacity:1; pointer-events:auto; }
.modal {
    background:var(--canvas); border-radius:0; max-width:640px; width:100%;
    max-height:86vh; overflow-y:auto; position:relative;
    border-top:4px solid var(--primary);
    box-shadow:0 16px 48px rgba(0,0,0,0.3);
    transform:translateY(16px); transition:transform 0.2s;
}
.modal-overlay.open .modal { transform:translateY(0); }
.modal-head {
    display:flex; align-items:flex-start; gap:20px;
    padding:32px 32px 20px; border-bottom:1px solid var(--hairline);
}
.modal-logo {
    flex:0 0 72px; width:72px; height:72px; background:#fff;
    border:1px solid var(--hairline); display:flex; align-items:center; justify-content:center;
    padding:10px;
}
.modal-logo img { max-width:100%; max-height:100%; object-fit:contain; }
.modal-logo svg { width:40px; height:40px; color:var(--primary); }
.modal-titles { flex:1; min-width:0; padding-top:4px; }
.modal-eyebrow { font-size:12px; color:var(--primary); font-weight:600; letter-spacing:0.04em;
    text-transform:uppercase; margin-bottom:6px; }
.modal-title { font-size:26px; font-weight:300; color:var(--ink); letter-spacing:-0.01em; line-height:1.2; }
.modal-close {
    position:absolute; top:0; right:0; width:48px; height:48px;
    background:transparent; border:none; cursor:pointer; color:var(--ink-muted);
    display:flex; align-items:center; justify-content:center; transition:background 0.11s;
}
.modal-close:hover { background:var(--surface-1); color:var(--ink); }
.modal-body { padding:24px 32px 32px; }
.modal-body p { font-size:15.5px; color:var(--ink-muted); line-height:1.75; }
.modal-actions { margin-top:28px; display:flex; gap:1px; }
.modal-cta {
    display:inline-flex; align-items:center; gap:40px; justify-content:space-between;
    background:var(--primary); color:#fff; border:none; cursor:pointer;
    padding:14px 16px; font-size:14px; font-family:inherit; min-width:200px;
    transition:background 0.11s;
}
.modal-cta:hover { background:var(--primary-hover); }
.modal-ghost {
    display:inline-flex; align-items:center; padding:13px 16px;
    background:transparent; color:var(--ink); border:1px solid var(--hairline-strong);
    cursor:pointer; font-size:14px; font-family:inherit; transition:background 0.11s;
}
.modal-ghost:hover { background:var(--surface-1); }

/* ---------- Article page ---------- */
.article-page { padding-top:48px; background:var(--canvas); min-height:70vh; }
.article-wrap { max-width:820px; margin:0 auto; padding:48px 24px 72px; }
.article-back { display:inline-block; color:var(--primary); font-size:14px; margin-bottom:28px; }
.article-back:hover { color:var(--primary-hover); }
.article-eyebrow { font-size:13px; color:var(--primary); font-weight:600; letter-spacing:0.04em; margin-bottom:12px; }
.article-title { font-size:38px; font-weight:300; color:var(--ink); letter-spacing:-0.02em; line-height:1.2; margin-bottom:14px; }
.article-meta { font-size:13px; color:var(--ink-faint); padding-bottom:24px; border-bottom:1px solid var(--hairline); margin-bottom:32px; }
.article-body { font-size:16px; color:var(--ink-muted); line-height:1.8; }
.article-body h2 { font-size:22px; font-weight:600; color:var(--ink); letter-spacing:-0.01em; margin:36px 0 14px; padding-left:12px; border-left:4px solid var(--primary); line-height:1.3; }
.article-body p { margin-bottom:16px; }
.article-body ul { margin:0 0 20px; padding-left:0; list-style:none; }
.article-body li { position:relative; padding-left:22px; margin-bottom:10px; line-height:1.7; }
.article-body li::before { content:""; position:absolute; left:4px; top:11px; width:6px; height:6px; background:var(--primary); }
.article-body strong { color:var(--ink); font-weight:600; }
.article-cta-box { margin-top:48px; padding:28px 32px; background:var(--surface-1); border-top:2px solid var(--primary);
    display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.article-cta-text { display:flex; flex-direction:column; gap:4px; }
.article-cta-text strong { font-size:17px; color:var(--ink); font-weight:600; }
.article-cta-text span { font-size:14px; color:var(--ink-subtle); }
.article-empty { text-align:center; padding:64px 0; }
.article-empty h1 { font-size:28px; font-weight:300; color:var(--ink); margin-bottom:12px; }
.article-empty p { font-size:15px; color:var(--ink-subtle); margin-bottom:16px; }

/* ---------- Article related (同类内链) ---------- */
.article-related { margin-top:56px; padding-top:40px; border-top:1px solid var(--hairline); }
.article-related-title { font-size:22px; font-weight:300; color:var(--ink); letter-spacing:-0.01em; margin-bottom:20px; }
.article-related-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.article-related-card { display:flex; align-items:center; gap:12px; padding:18px 20px;
    background:var(--surface-1); border-left:3px solid transparent; transition:all 0.12s; }
.article-related-card:hover { background:#edf5ff; border-left-color:var(--primary); }
.arc-tag { flex:0 0 auto; font-size:12px; font-weight:600; color:var(--primary); background:var(--canvas); padding:3px 10px; }
.arc-name { flex:1 1 auto; font-size:15px; font-weight:500; color:var(--ink); line-height:1.35; }
.arc-arrow { flex:0 0 auto; color:var(--primary); transition:transform 0.15s; }
.article-related-card:hover .arc-arrow { transform:translateX(4px); }

/* ---------- Knowledge list (审核标准知识) ---------- */
.knowledge { background:var(--surface-1); }
.kn-tabs { display:flex; flex-wrap:wrap; gap:0; max-width:1200px; margin:0 auto 24px;
    padding:0 24px; border-bottom:1px solid var(--hairline); }
.kn-tab { flex:0 0 auto; padding:12px 22px; background:transparent; border:none;
    border-bottom:2px solid transparent; margin-bottom:-1px; color:var(--ink-subtle);
    font-size:14px; font-weight:400; cursor:pointer; transition:all 0.11s; font-family:inherit; }
.kn-tab:hover { color:var(--ink); background:var(--canvas); }
.kn-tab.active { color:var(--ink); font-weight:600; border-bottom-color:var(--primary); }
.knowledge-table-wrap { max-width:1200px; margin:0 auto; padding:0 24px; }
.knowledge-table { width:100%; border-collapse:collapse; background:var(--canvas); border:1px solid var(--hairline); font-size:15px; }
.knowledge-table thead th { text-align:left; background:var(--ink); color:#fff; font-weight:500; font-size:13px;
    letter-spacing:0.04em; padding:14px 20px; }
.knowledge-table tbody td { padding:16px 20px; border-bottom:1px solid var(--hairline); color:var(--ink-muted); vertical-align:middle; }
.knowledge-table tbody tr:last-child td { border-bottom:none; }
.knowledge-table tbody tr { transition:background 0.11s; }
.knowledge-table tbody tr:hover { background:var(--surface-1); }
.kn-type { display:inline-block; font-size:12px; font-weight:600; color:var(--primary); background:#edf5ff; padding:3px 10px; white-space:nowrap; }
.kn-name { font-size:16px; font-weight:600; color:var(--ink); }
.kn-name:hover { color:var(--primary); }
.kn-name .kn-arrow { color:var(--primary); margin-left:6px; transition:margin 0.15s; display:inline-block; }
.knowledge-table tbody tr:hover .kn-arrow { margin-left:10px; }
.kn-date { font-size:13px; color:var(--ink-faint); font-variant-numeric:tabular-nums; white-space:nowrap; }

/* ---------- Latest news (最新验厂动态, 复用 knowledge 表格样式) ---------- */
.news-section { background:var(--canvas); }

@media(max-width:768px) {
    .article-title { font-size:28px; }
    .article-wrap { padding:32px 20px 56px; }
    .article-cta-box { flex-direction:column; align-items:flex-start; }
    .article-related-grid { grid-template-columns:1fr; }
    .knowledge-table thead { display:none; }
    .knowledge-table tbody td { display:block; padding:6px 16px; border:none; }
    .knowledge-table tbody tr { display:block; border-bottom:1px solid var(--hairline); padding:14px 0; }
    .kn-date::before { content:"更新："; color:var(--ink-faint); }
}

/* ---------- Scroll animations ---------- */
.fade-up {
    opacity:0; transform:translateY(20px);
    transition:opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible { opacity:1; transform:translateY(0); }

/* ---------- Responsive ---------- */
@media(max-width:1024px) {
    .cards-grid { grid-template-columns:repeat(2,1fr); }
    .cases-grid { grid-template-columns:repeat(2,1fr); }
    .adv-grid { grid-template-columns:repeat(2,1fr); }
    .footer-inner { grid-template-columns:1fr 1fr; }
    .contact-inner { grid-template-columns:1fr; gap:40px; }
    /* 导航项较多，窄于 1024px 时收成汉堡菜单，避免横向溢出裁掉靠后的入口 */
    .nav-links,.nav-cta-btn { display:none; }
    .hamburger { display:block; }
    .mobile-menu { display:flex; }
}
@media(max-width:768px) {
    .nav-links,.nav-cta-btn { display:none; }
    .hamburger { display:block; }
    .mobile-menu { display:flex; }
    .hero { min-height:70vh; }
    .hero h1 { font-size:34px; }
    .cases-grid,.adv-grid { grid-template-columns:1fr; }
    .stats { flex-wrap:wrap; gap:1px; }
    .main-tabs { flex-wrap:wrap; padding-left:12px; padding-right:12px; }
    .process-steps { flex-direction:column; align-items:stretch; }
    .step { max-width:none; }
    .step-arrow { transform:rotate(90deg); align-self:center; padding:4px 0; }
    .footer-inner { grid-template-columns:1fr; gap:32px; }
    .hero-actions { flex-direction:column; align-items:flex-start; gap:1px; }
    .btn { width:100%; }
    .contact-left h2 { font-size:30px; }
    .section-header h2 { font-size:30px; }
    .cards-grid { grid-template-columns:1fr; }
    .card { flex-direction:row; }
    .card-left { flex:0 0 110px; min-height:auto; }
    .card-logo, .card-icon { width:110px; height:90px; }
    .card-icon svg { width:44px; height:44px; }
    .modal-head { padding:24px 20px 16px; }
    .modal-body { padding:20px; }
    .modal-title { font-size:22px; }
    .modal-actions { flex-direction:column; }
    .modal-cta,.modal-ghost { width:100%; justify-content:space-between; }
}
@media(max-width:480px) {
    .cards-grid,.cases-grid,.adv-grid { grid-template-columns:1fr; }
    .brand-logo { width:104px; height:60px; }
    .card { flex-direction:column; align-items:flex-start; }
    .card-left { width:100%; flex:none; }
    .card-logo,.card-icon { width:100%; height:100px; }
}

@media print {
    .navbar,.hamburger,.mobile-menu,.back-to-top,.hero-bg,.hero-particles,
    .hero-bg-visual,.hero-glow,.btn-primary,.btn-secondary,.hero-actions,.modal-overlay { display:none!important; }
    .hero { min-height:auto; padding:40px 0; }
    .hero h1,.hero .subtitle { color:#000; text-shadow:none; }
    .hero .subtitle { color:#333; }
    body { background:#fff; color:#000; }
    section { padding:20px 0; page-break-inside:avoid; }
    .card,.case-card,.step,.adv-item,.brand-logo { border-color:#ccc; box-shadow:none; }
    .brand-logo img { filter:none; opacity:1; }
    a { color:#000; }
}

@media(prefers-reduced-motion:reduce) {
    *,*::before,*::after {
        animation-duration:0.01ms!important;
        animation-iteration-count:1!important;
        transition-duration:0.01ms!important;
        scroll-behavior:auto!important;
    }
    .fade-up { opacity:1; transform:none; }
}

/* ---------- 软件下载中心 (download.html) ---------- */
.download-page { padding-top:48px; background:var(--canvas); min-height:72vh; }
.download-wrap { max-width:900px; margin:0 auto; padding:56px 24px 80px; }
.download-head { margin-bottom:40px; }
.download-head .badge {
    display:inline-block; border-left:3px solid var(--primary); padding-left:12px;
    font-size:13px; color:var(--primary); font-weight:600; margin-bottom:16px;
}
.download-head h1 { font-size:40px; font-weight:300; color:var(--ink);
    letter-spacing:-0.02em; line-height:1.15; margin-bottom:12px; }
.download-head p { font-size:16px; color:var(--ink-subtle); max-width:640px; }
.download-list { display:flex; flex-direction:column; gap:20px; }
.dl-loading { color:var(--ink-subtle); font-size:15px; padding:32px 0; }
.dl-card { display:flex; gap:20px; background:var(--surface-1);
    border:1px solid var(--hairline); padding:28px; transition:border-color 0.15s; }
.dl-card:hover { border-color:var(--hairline-strong); }
.dl-card-icon { font-size:40px; line-height:1; flex-shrink:0; }
.dl-card-main { flex:1; min-width:0; }
.dl-card-top { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:8px; }
.dl-card-top h3 { font-size:22px; font-weight:500; color:var(--ink); }
.dl-live { font-size:12px; color:var(--success); font-weight:600; }
.dl-cached { font-size:12px; color:var(--ink-faint); font-weight:500; }
.dl-card-desc { font-size:15px; color:var(--ink-muted); margin-bottom:16px; }
.dl-meta { display:flex; flex-wrap:wrap; gap:24px; margin-bottom:16px; }
.dl-meta span { font-size:14px; color:var(--ink-muted); }
.dl-meta b { display:block; font-size:12px; color:var(--ink-faint); font-weight:600; margin-bottom:2px; }
.dl-notes { margin-bottom:20px; }
.dl-notes summary { font-size:14px; color:var(--primary); cursor:pointer; font-weight:500; }
.dl-notes ul { margin:12px 0 0; padding-left:20px; }
.dl-notes li { font-size:14px; color:var(--ink-muted); margin-bottom:6px; line-height:1.5; }
.dl-actions { display:flex; gap:12px; flex-wrap:wrap; }
/* 白底页面的按钮覆盖（.btn-secondary 原为深色 hero 设计） */
.download-page .btn { padding:13px 24px; font-size:14px; }
.download-page .btn-secondary { color:var(--primary); border:1px solid var(--primary); background:transparent; }
.download-page .btn-secondary:hover { background:rgba(15,98,254,0.06); }
.download-note { display:flex; align-items:flex-start; gap:10px; margin-top:32px;
    padding:16px 20px; background:var(--surface-1); border-left:3px solid var(--primary);
    font-size:14px; color:var(--ink-muted); }
.download-note svg { color:var(--primary); flex-shrink:0; margin-top:2px; }
.download-note a { color:var(--primary); font-weight:500; }
@media (max-width:640px) {
    .download-wrap { padding:36px 20px 56px; }
    .download-head h1 { font-size:30px; }
    .dl-card { flex-direction:column; gap:14px; padding:22px; }
    .dl-card-icon { font-size:32px; }
    .dl-meta { gap:16px; }
}

/* ---------- 悬浮快捷联系栏 ---------- */
.contact-rail {
    position:fixed; right:0; bottom:96px; z-index:900;
    display:flex; flex-direction:column; gap:1px;
}
.rail-item {
    position:relative; width:48px; height:48px;
    display:flex; align-items:center; justify-content:center;
    background:var(--ink); color:#fff; border:none; cursor:pointer;
    transition:background 0.15s; font-family:inherit;
}
.rail-item:hover { background:var(--primary); }
.rail-primary { background:var(--primary); }
.rail-primary:hover { background:var(--primary-hover); }
.rail-tip {
    position:absolute; right:48px; top:0; height:48px;
    display:flex; flex-direction:column; align-items:flex-end; justify-content:center;
    background:var(--ink); color:#fff; padding:0 16px; white-space:nowrap;
    font-size:13px; line-height:1.3;
    opacity:0; pointer-events:none; transform:translateX(8px); transition:all 0.18s;
}
.rail-tip b { font-size:14px; font-weight:600; }
.rail-item:hover .rail-tip { opacity:1; transform:translateX(0); }
.rail-primary .rail-tip, .rail-primary:hover .rail-tip { background:var(--primary); }

/* 微信弹层 */
.wechat-pop {
    position:fixed; inset:0; z-index:2100;
    background:rgba(22,22,22,0.6); display:flex; align-items:center; justify-content:center;
}
.wechat-pop[hidden] { display:none; }
.wechat-pop-inner {
    position:relative; background:#fff; padding:36px 40px 32px; text-align:center;
    max-width:320px; border-top:3px solid var(--primary);
}
.wechat-pop-close {
    position:absolute; top:8px; right:8px; width:36px; height:36px;
    background:none; border:none; color:var(--ink-subtle); cursor:pointer;
    display:flex; align-items:center; justify-content:center;
}
.wechat-pop-close:hover { color:var(--ink); }
.wechat-qr {
    width:160px; height:160px; margin:0 auto 16px;
    display:flex; align-items:center; justify-content:center;
    background:var(--surface-1); border:1px solid var(--hairline); color:var(--ink-faint);
}
.wechat-qr img { width:100%; height:100%; object-fit:contain; }
.wechat-pop-title { font-size:17px; font-weight:600; color:var(--ink); margin-bottom:6px; }
.wechat-pop-sub { font-size:13px; color:var(--ink-subtle); }
@media (max-width:640px) {
    .contact-rail { bottom:0; right:0; flex-direction:row; }
    .rail-tip { display:none; }
}

/* ---------- Hero 极简快速询盘表单 ---------- */
.hero-quote { margin-top:28px; max-width:560px; }
.hero-quote-label {
    font-size:13px; color:#fff; font-weight:500; margin-bottom:10px;
    letter-spacing:0.02em; opacity:0.92;
}
.hero-quote-row { display:flex; gap:8px; flex-wrap:wrap; }
.hero-quote-row input {
    flex:1; min-width:120px; height:48px; padding:0 14px;
    background:rgba(255,255,255,0.95); border:1px solid transparent;
    color:var(--ink); font-size:14px; font-family:inherit; border-radius:0;
}
.hero-quote-row input#hq-cert { flex:1.6; }
.hero-quote-row input:focus { outline:2px solid var(--primary); outline-offset:0; }
.hero-quote-row input.invalid { border-color:var(--error); background:#fff; }
.hero-quote-row .btn { height:48px; padding:0 22px; white-space:nowrap; }
.hero-quote-msg { margin-top:10px; font-size:13px; color:#fff; font-weight:500; }
@media (max-width:640px) {
    .hero-quote-row input, .hero-quote-row .btn { flex:1 1 100%; min-width:0; }
}

/* ---------- 案例区信任数据条 ---------- */
.trust-strip {
    max-width:1200px; margin:48px auto 0; padding:0 24px;
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:var(--hairline);
}
.trust-item {
    background:var(--canvas); padding:28px 20px; text-align:center;
}
.trust-num {
    font-size:32px; font-weight:300; color:var(--primary);
    letter-spacing:-0.02em; line-height:1.1; margin-bottom:8px;
}
.trust-num span { font-size:18px; font-weight:400; }
.trust-label { font-size:13px; color:var(--ink-subtle); line-height:1.4; }
@media (max-width:768px) {
    .trust-strip { grid-template-columns:repeat(2,1fr); }
}