/* ============================================
   Custom 5-Axis CNC Machined Parts — Style
   Xiamen Goldcattle Plastic & Metal Products Co., Ltd.
   Theme: Industrial Graphite + Bronze Accent
   ============================================ */

:root{
  --bg:#eef1f5;
  --bg-white:#ffffff;
  --bg-card:#f6f8fa;
  --bg-card-alt:#e8ecf1;
  --bg-dark:#1a2232;
  --bg-dark-alt:#222d3e;
  --bg-hero:#0d1b2a;
  --text-primary:#1e2a3a;
  --text-secondary:#3d4f63;
  --text-muted:#6b7d93;
  --text-light:#c8d6e5;
  --accent:#b87333;
  --accent-hover:#9a5f28;
  --accent-light:rgba(184,115,51,.1);
  --blue:#4a90c4;
  --blue-hover:#357ab3;
  --blue-light:rgba(74,144,196,.08);
  --border:#d0d8e0;
  --border-accent:#b0c4de;
  --radius:8px;
  --radius-lg:14px;
  --shadow:0 2px 12px rgba(26,34,50,.08);
  --shadow-lg:0 8px 32px rgba(26,34,50,.12);
  --transition:all .25s ease;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;font-size:17px;line-height:1.72;color:var(--text-primary);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-hover)}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ── Nav ── */
.nav{position:sticky;top:0;z-index:100;background:rgba(238,241,245,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);padding:10px 0}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;width:auto}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{font-size:14px;font-weight:500;color:var(--text-secondary);padding:6px 0;border-bottom:2px solid transparent;transition:var(--transition)}
.nav-links a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ── Hero ── */
.hero{background:linear-gradient(160deg,#0d1b2a 0%,#162a42 40%,#1a2232 100%);padding:80px 0 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-120px;right:-60px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(184,115,51,.12) 0%,transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-80px;left:-40px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(74,144,196,.08) 0%,transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:52px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(184,115,51,.12);border:1px solid rgba(184,115,51,.25);color:#d4a574;padding:7px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px;letter-spacing:.3px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#4ade80;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

h1{font-size:36px;font-weight:800;color:#fff;line-height:1.22;margin-bottom:14px;letter-spacing:-.4px}
.hero-sub{font-size:18px;color:var(--text-light);line-height:1.65;margin-bottom:28px;max-width:540px}
.hero-attrs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-attr{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);padding:9px 16px;border-radius:6px;font-size:14px;color:var(--text-light);font-weight:500}
.hero-attr em{font-style:normal;color:#d4a574;font-weight:700}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-image img{border-radius:var(--radius-lg);box-shadow:0 12px 40px rgba(0,0,0,.3)}

/* ── Buttons ── */
.btn{display:inline-block;padding:14px 30px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition);border:none;text-align:center;text-decoration:none}
.btn-copper{background:linear-gradient(135deg,#b87333,#9a5f28);color:#fff;box-shadow:0 3px 14px rgba(184,115,51,.35)}
.btn-copper:hover{transform:translateY(-1px);box-shadow:0 5px 22px rgba(184,115,51,.45);color:#fff}
.btn-copper:active{transform:translateY(0)}
.btn-blue{background:linear-gradient(135deg,#4a90c4,#2d6a8f);color:#fff;box-shadow:0 3px 14px rgba(74,144,196,.3)}
.btn-blue:hover{transform:translateY(-1px);box-shadow:0 5px 22px rgba(74,144,196,.4);color:#fff}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.3)}
.btn-outline:hover{border-color:#d4a574;color:#d4a574}

/* ── Section base ── */
.section{padding:64px 0}
.section-dark{background:var(--bg-dark);color:var(--text-light)}
.section-alt{background:var(--bg-white)}
.section-card{background:var(--bg-card)}
.section-label{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.6px;color:var(--accent);margin-bottom:10px}
.section-dark .section-label{color:#d4a574}

h2{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.3px;line-height:1.3}
.section-dark h2{color:#fff}
h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:8px}
.section-dark h3{color:#e2e8f0}
.section-desc{font-size:17px;color:var(--text-secondary);margin-bottom:36px;max-width:780px;line-height:1.65}
.section-dark .section-desc{color:var(--text-light);opacity:.8}

/* ── Product Snapshot ── */
.snapshot{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 40px;box-shadow:var(--shadow)}
.snapshot h2{margin-bottom:24px}
.snapshot-table{width:100%;border-collapse:collapse}
.snapshot-table th{text-align:left;font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;padding:12px 16px;border-bottom:2px solid var(--border);width:180px}
.snapshot-table td{font-size:17px;color:var(--text-primary);padding:12px 16px;border-bottom:1px solid var(--border)}
.snapshot-table tr:last-child td,.snapshot-table tr:last-child th{border-bottom:none}
.snapshot-note{margin-top:16px;font-size:14px;color:var(--text-muted);font-style:italic}

/* ── Why 5-Axis cards ── */
.reason-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.reason-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:var(--transition);position:relative;overflow:hidden}
.reason-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--blue))}
.reason-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.reason-card .icon{font-size:28px;margin-bottom:14px;display:block}
.reason-card h3{margin-bottom:8px}
.reason-card p{font-size:15px;color:var(--text-secondary);line-height:1.6}

/* ── Comparison table ── */
.compare-table{width:100%;border-collapse:collapse;background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.compare-table th{background:var(--bg-dark);color:#fff;font-size:14px;font-weight:600;padding:14px 18px;text-align:left}
.compare-table td{font-size:15px;padding:12px 18px;border-bottom:1px solid var(--border);color:var(--text-primary)}
.compare-table tr:nth-child(even) td{background:var(--bg-card)}
.compare-table .highlight{background:rgba(184,115,51,.06);font-weight:600}
.compare-table .best{color:var(--accent);font-weight:700}

/* ── Material split ── */
.mat-split{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.mat-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;position:relative;overflow:hidden}
.mat-card.aluminum{border-top:4px solid #b0c4de}
.mat-card.stainless{border-top:4px solid #8a9aab}
.mat-card h3{font-size:20px;margin-bottom:4px}
.mat-card .subtitle{font-size:14px;color:var(--text-muted);margin-bottom:18px}
.mat-card ul{list-style:none}
.mat-card li{padding:9px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text-secondary);display:flex;align-items:baseline;gap:8px}
.mat-card li:last-child{border-bottom:none}
.mat-card li::before{content:'▸';color:var(--accent);font-weight:700;flex-shrink:0}

/* ── Part categories ── */
.parts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.part-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;transition:var(--transition)}
.part-card:hover{border-color:var(--accent);box-shadow:0 4px 18px rgba(184,115,51,.1)}
.part-card .icon{font-size:32px;margin-bottom:12px}
.part-card h3{font-size:17px;margin-bottom:10px}
.part-card ul{list-style:none}
.part-card li{font-size:14px;color:var(--text-secondary);padding:3px 0;line-height:1.5}
.part-card li::before{content:'· ';color:var(--accent);font-weight:700}

/* ── Feature list (critical features) ── */
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.feature-item{display:flex;gap:14px;align-items:flex-start;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:var(--transition)}
.feature-item:hover{border-color:var(--accent)}
.feature-item .num{font-size:28px;font-weight:800;color:var(--accent);line-height:1;flex-shrink:0;min-width:30px}
.feature-item h3{font-size:16px;margin-bottom:4px}
.feature-item p{font-size:14px;color:var(--text-secondary);line-height:1.5}

/* ── Flow decision tree ── */
.flow-tree{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 32px}
.flow-step{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}
.flow-step:last-child{border-bottom:none}
.flow-step .step-num{width:36px;height:36px;border-radius:50%;background:var(--accent-light);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0}
.flow-step .step-text{font-size:16px;color:var(--text-primary);font-weight:500}
.flow-step .arrow-down{color:var(--accent);font-size:18px;margin-left:17px}

/* ── DFM grid ── */
.dfm-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.dfm-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:22px 18px;border-left:3px solid var(--accent)}
.dfm-item h3{font-size:15px;margin-bottom:6px}
.dfm-item p{font-size:14px;color:var(--text-secondary);line-height:1.55}

/* ── Setup comparison ── */
.setup-compare{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:center}
.setup-col{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px}
.setup-col h3{margin-bottom:14px;font-size:17px}
.setup-step{display:flex;align-items:center;gap:8px;padding:8px 0;font-size:15px;color:var(--text-secondary)}
.setup-step .s-num{background:var(--bg-card-alt);color:var(--text-primary);padding:3px 8px;border-radius:4px;font-size:12px;font-weight:600}
.setup-col .result{margin-top:14px;padding:12px 16px;border-radius:var(--radius);font-size:14px;font-weight:600}
.setup-col .warn{background:rgba(192,57,43,.08);color:#c0392b;border:1px solid rgba(192,57,43,.15)}
.setup-col .good{background:rgba(30,132,73,.08);color:#1e8449;border:1px solid rgba(30,132,73,.15)}
.setup-vs{text-align:center;font-size:20px;font-weight:800;color:var(--accent)}
.setup-note{margin-top:24px;font-size:15px;color:var(--text-secondary);line-height:1.6;padding:18px 22px;background:var(--bg-card);border-radius:var(--radius);border-left:4px solid var(--blue)}

/* ── Process flow ── */
.process-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.process-step{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:22px 18px;text-align:center;position:relative;transition:var(--transition)}
.process-step:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.process-step .num{font-size:12px;font-weight:700;color:var(--accent);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.process-step h3{font-size:15px;margin-bottom:6px}
.process-step p{font-size:13px;color:var(--text-secondary);line-height:1.5}
.process-step::after{content:'→';position:absolute;right:-12px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:18px;font-weight:700}
.process-step:nth-child(4n)::after,.process-step:last-child::after{content:none}

/* ── Strategy split ── */
.strategy-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.strategy-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:32px 28px;border:1px solid var(--border)}
.strategy-card h3{font-size:20px;margin-bottom:4px}
.strategy-card .mat-label{display:inline-block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;padding:4px 12px;border-radius:4px;margin-bottom:16px}
.strategy-card .al-label{background:rgba(176,196,222,.2);color:#5a7fa0}
.strategy-card .ss-label{background:rgba(138,154,171,.2);color:#5a6e7f}
.strategy-card ul{list-style:none}
.strategy-card li{padding:10px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text-secondary);display:flex;gap:8px;align-items:baseline}
.strategy-card li:last-child{border-bottom:none}
.strategy-card li strong{color:var(--text-primary);font-weight:600;min-width:120px}

/* ── Finishing ── */
.finish-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.finish-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px}
.finish-card h3{font-size:18px;margin-bottom:14px}
.finish-card ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.finish-card li{background:var(--bg-card);padding:6px 14px;border-radius:20px;font-size:14px;color:var(--text-secondary);border:1px solid var(--border)}
.finish-card .link-more{display:block;margin-top:14px;font-size:14px;font-weight:600;color:var(--blue)}

/* ── Part Size ── */
.size-content{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.size-text .factor{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text-secondary)}
.size-text .factor:last-child{border-bottom:none}
.size-text .factor .check{color:var(--accent);font-size:16px;font-weight:700;flex-shrink:0}
.size-note{margin-top:16px;font-size:14px;color:var(--text-muted);font-style:italic}

/* ── Quality ── */
.quality-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.quality-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;text-align:center;transition:var(--transition)}
.quality-item:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.quality-item .q-icon{font-size:26px;margin-bottom:8px;display:block}
.quality-item p{font-size:14px;color:var(--text-secondary);font-weight:500}

/* ── Case Study ── */
.case-study{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.case-header{display:grid;grid-template-columns:1fr 1fr;gap:0}
.case-header>div{padding:28px 32px}
.case-header .case-al{background:rgba(176,196,222,.1);border-right:1px solid var(--border)}
.case-header .case-ss{background:rgba(138,154,171,.1)}
.case-header h3{font-size:18px;margin-bottom:4px}
.case-header .mat{font-size:13px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.case-detail{padding:28px 32px;border-top:1px solid var(--border)}
.case-row{display:grid;grid-template-columns:140px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:15px}
.case-row:last-child{border-bottom:none}
.case-row .label{font-weight:600;color:var(--text-muted)}
.case-row .value{color:var(--text-primary)}

/* ── Cost ── */
.cost-factors{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.cost-factor{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:12px 20px;font-size:15px;color:var(--text-primary);font-weight:500;transition:var(--transition)}
.cost-factor:hover{border-color:var(--accent);background:var(--accent-light)}
.cost-factor .plus{color:var(--accent);margin-left:8px;font-weight:700}
.cost-note{background:var(--bg-card);border-left:4px solid var(--accent);padding:20px 24px;border-radius:var(--radius);font-size:16px;color:var(--text-secondary);line-height:1.65}

/* ── Applications ── */
.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}
.app-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:18px 14px;text-align:center;transition:var(--transition)}
.app-item:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.app-item .a-icon{font-size:28px;margin-bottom:8px;display:block}
.app-item p{font-size:14px;color:var(--text-secondary);font-weight:500}
.app-industries{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}
.app-industries span{background:var(--bg-card);padding:5px 14px;border-radius:16px;font-size:13px;color:var(--text-muted);font-weight:500}

/* ── FAQ ── */
.faq-list{max-width:820px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;background:var(--bg-white);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent)}
.faq-q{padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q::after{content:'+';font-size:20px;color:var(--accent);flex-shrink:0;font-weight:300;transition:var(--transition)}
.faq-item.open .faq-q::after{content:'−'}
.faq-a{padding:0 22px 18px;font-size:15px;color:var(--text-secondary);line-height:1.65;display:none}
.faq-item.open .faq-a{display:block}

/* ── CTA ── */
.cta-section{background:linear-gradient(160deg,#0d1b2a 0%,#162a42 60%,#1a2232 100%);padding:72px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-80px;left:50%;transform:translateX(-50%);width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(184,115,51,.1) 0%,transparent 70%);pointer-events:none}
.cta-section h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-section .section-desc{color:var(--text-light);margin:0 auto 32px;opacity:.85}
.cta-form{max-width:700px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cta-form .full{grid-column:1/-1}
.cta-form input,.cta-form textarea,.cta-form select{width:100%;padding:12px 16px;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);font-size:15px;color:var(--text-primary);background:rgba(255,255,255,.92);transition:var(--transition)}
.cta-form input:focus,.cta-form textarea:focus,.cta-form select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}
.cta-form textarea{resize:vertical;min-height:80px}
.cta-form .btn{grid-column:1/-1;justify-self:center;padding:16px 48px;font-size:17px}

/* ── Footer ── */
.footer{background:var(--bg-dark);padding:28px 0;text-align:center;border-top:1px solid rgba(255,255,255,.08)}
.footer p{font-size:13px;color:var(--text-muted)}
.footer a{color:var(--text-light)}

/* ── Image block ── */
.img-block{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.img-block img{width:100%;display:block}

/* ── Internal links row ── */
.internal-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.internal-links a{background:var(--bg-card);border:1px solid var(--border);padding:7px 16px;border-radius:6px;font-size:14px;color:var(--text-secondary);transition:var(--transition)}
.internal-links a:hover{border-color:var(--accent);color:var(--accent)}

/* ── Responsive ── */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-image{order:-1}
  h1{font-size:28px}
  h2{font-size:24px}
  .mat-split,.setup-compare,.strategy-grid,.finish-grid,.size-content,.case-header{grid-template-columns:1fr}
  .setup-vs{margin:8px 0}
  .process-flow{grid-template-columns:repeat(2,1fr)}
  .process-step:nth-child(2n)::after{content:none}
  .process-step::after{right:-10px}
  .dfm-grid{grid-template-columns:1fr 1fr}
  .feature-list{grid-template-columns:1fr}
  .compare-table{font-size:14px}
  .compare-table th,.compare-table td{padding:10px 12px}
  .cta-form{grid-template-columns:1fr}
  .cta-form .full{grid-column:1}
}
@media(max-width:600px){
  .hero{padding:48px 0 36px}
  .section{padding:40px 0}
  .container{padding:0 16px}
  .reason-grid{grid-template-columns:1fr}
  .parts-grid{grid-template-columns:1fr 1fr}
  .process-flow{grid-template-columns:1fr}
  .process-step::after{content:none}
  .dfm-grid{grid-template-columns:1fr}
  .quality-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .snapshot{padding:24px 18px}
  .snapshot-table th{width:110px;font-size:12px}
  .snapshot-table td{font-size:15px}
}

/* ── Inline style replacements ── */
.hero-note{margin-top:14px;font-size:12px;color:rgba(255,255,255,.4)}
.example-intro{margin-bottom:16px}
.example-text{font-size:15px;color:var(--text-secondary);line-height:1.65;margin-top:8px}
.img-centered{margin-top:32px;max-width:800px;margin-left:auto;margin-right:auto}
.mt24{margin-top:24px}
.mt32{margin-top:32px}