/* ============================================================
   造物现场 · v2 视觉升级
   设计语言：工业纪实 + 现代科技感
   ============================================================ */

:root {
  --c-primary: #1565C0;
  --c-secondary: #0288D1;
  --c-accent: #00897B;
  --c-industrial: #F9A825;
  --c-text: #212121;
  --c-text-2: #5f6368;
  --c-text-3: #80868b;
  --c-head: #1A237E;
  --c-bg: #ffffff;
  --c-surface: #f5f7fa;
  --c-dark: #0A0E1A;
  --c-divider: #e8eaed;
  --c-warn: #E53935;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,.14);
  --radius: 14px;
  --radius-lg: 20px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
h1,h2,h3,h4 { color: var(--c-head); font-weight: 800; letter-spacing: -.02em; margin: 0 0 .6em; line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-secondary); }
.ja body { font-family: "Hiragino Sans","Noto Sans JP","Yu Gothic","PingFang SC",system-ui,sans-serif; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ============ Navbar ============ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,14,26,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.nav-logo { font-weight: 800; color: #fff; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.nav-logo-dot {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--c-industrial) 0%, var(--c-accent) 100%);
}
.nav-links { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav-links a { color: rgba(255,255,255,.72); font-size: 14.5px; font-weight: 500; padding: 6px 10px; border-radius: 7px; }
.nav-links a:hover, .nav-links a.active { color: #fff; background: rgba(255,255,255,.10); text-decoration: none; }
.nav-cta {
  background: var(--c-industrial) !important; color: #0A0E1A !important;
  padding: 9px 18px !important; border-radius: 9px !important; font-weight: 700 !important;
}
.nav-cta:hover { background: #FFB300 !important; }

.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 11px;
  border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.05);
  border-radius: 8px; font-size: 14px; color: rgba(255,255,255,.8); cursor: pointer;
}
.lang-btn:hover { border-color: var(--c-industrial); color: #fff; }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 6px); background: #fff;
  border: 1px solid var(--c-divider); border-radius: 10px; padding: 6px;
  display: none; min-width: 140px; box-shadow: var(--shadow-md);
}
.lang-menu.open { display: block; }
.lang-menu a { display: block; padding: 8px 12px; border-radius: 6px; font-size: 14px; color: var(--c-text); }
.lang-menu a:hover { background: var(--c-surface); text-decoration: none; }
.lang-menu a.current { background: var(--c-primary); color: #fff; }
@media (max-width: 900px) { .nav-links { display: none; } }

/* ============ Hero（深色工业风）============ */
.hero {
  background: var(--c-dark); color: #fff; padding: 100px 0 80px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(50% 50% at 78% 8%, rgba(21,101,192,.35) 0%, transparent 60%),
    radial-gradient(45% 45% at 12% 88%, rgba(0,137,123,.28) 0%, transparent 60%);
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } .hero { padding: 64px 0 56px; } }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px;
  border-radius: 100px; background: rgba(249,168,37,.14); color: var(--c-industrial);
  font-size: 13px; font-weight: 700; letter-spacing: .05em; margin-bottom: 24px;
  border: 1px solid rgba(249,168,37,.28);
}
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero h1 .accent { color: var(--c-industrial); display: block; }
.hero-sub { font-size: 18px; color: rgba(255,255,255,.72); max-width: 560px; margin-bottom: 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 20px;
  margin-top: 48px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stat-v {
  font-size: 30px; font-weight: 800; color: #fff; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.hero-stat-l { font-size: 13px; color: rgba(255,255,255,.55); margin-top: 2px; }

.hero-visual-card {
  background: linear-gradient(150deg, #1A237E 0%, #1565C0 55%, #00897B 100%);
  border-radius: var(--radius-lg); padding: 30px; color: #fff;
  box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
}
.hero-visual-card::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 34px 34px;
}
.hvc-inner { position: relative; z-index: 2; }
.hvc-tag {
  font-size: 11px; letter-spacing: .12em; font-weight: 700;
  color: var(--c-industrial); margin-bottom: 14px; text-transform: uppercase;
}
.hvc-title { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.hvc-sub { font-size: 14px; color: rgba(255,255,255,.75); margin-bottom: 22px; }
.hvc-list { display: grid; gap: 11px; }
.hvc-item {
  display: flex; align-items: center; gap: 10px; font-size: 14px; padding: 9px 12px;
  background: rgba(255,255,255,.10); border-radius: 9px; border: 1px solid rgba(255,255,255,.10);
}
.hvc-item .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-industrial); flex-shrink: 0; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px;
  border-radius: 11px; font-weight: 700; font-size: 15px; border: 1px solid transparent;
  cursor: pointer; transition: all .2s; text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-secondary); color: #fff; box-shadow: var(--shadow-md); }
.btn-industrial { background: var(--c-industrial); color: #0A0E1A; }
.btn-industrial:hover { background: #FFB300; box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.32); }
.btn-outline:hover { background: rgba(255,255,255,.10); color: #fff; }
.btn-lg { padding: 17px 32px; font-size: 16px; }

/* ============ Section ============ */
.section { padding: 88px 0; }
.section.alt { background: var(--c-surface); }
.section.dark { background: var(--c-dark); color: #fff; }
.section.dark h2, .section.dark h3 { color: #fff; }
.section.dark p { color: rgba(255,255,255,.7); }
.section-head { text-align: center; max-width: 740px; margin: 0 auto 52px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--c-text-2); font-size: 17px; }
.section.dark .section-head p { color: rgba(255,255,255,.65); }

.eyebrow-sm {
  display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .14em;
  text-transform: uppercase; color: var(--c-primary); margin-bottom: 12px;
}
.section.dark .eyebrow-sm { color: var(--c-industrial); }

/* ============ 工厂/视频展示网格 ============ */
.showcase-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
@media (max-width: 900px) { .showcase-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .showcase-grid { grid-template-columns: 1fr; } }

.showcase-card {
  border-radius: var(--radius); overflow: hidden; background: #fff;
  border: 1px solid var(--c-divider); box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s;
}
.showcase-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.sc-visual {
  aspect-ratio: 16/10; position: relative; display: flex; align-items: center; justify-content: center;
}
.sc-visual::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.10) 1px, transparent 1px);
  background-size: 26px 26px;
}
.sc-play {
  position: relative; z-index: 2; width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,255,255,.92); display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(0,0,0,.25); transition: transform .2s;
}
.showcase-card:hover .sc-play { transform: scale(1.12); }
.sc-play svg { margin-left: 3px; }
.sc-body { padding: 16px 18px 18px; }
.sc-title { font-weight: 700; color: var(--c-head); font-size: 15px; margin-bottom: 4px; }
.sc-meta { font-size: 13px; color: var(--c-text-3); }

.sc-g1 { background: linear-gradient(135deg,#1A237E,#1565C0); }
.sc-g2 { background: linear-gradient(135deg,#004D40,#00897B); }
.sc-g3 { background: linear-gradient(135deg,#E65100,#F9A825); }
.sc-g4 { background: linear-gradient(135deg,#4A148C,#7B1FA2); }
.sc-g5 { background: linear-gradient(135deg,#01579B,#0288D1); }
.sc-g6 { background: linear-gradient(135deg,#1B5E20,#43A047); }

/* ============ Pillar ============ */
.pillar-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
@media (max-width: 900px) { .pillar-grid { grid-template-columns: 1fr; } }
.pillar {
  background: #fff; border: 1px solid var(--c-divider); border-radius: var(--radius-lg);
  padding: 34px; transition: transform .2s, box-shadow .2s;
}
.pillar:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.pillar-icon {
  width: 58px; height: 58px; border-radius: 15px; margin-bottom: 22px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.pillar h3 { font-size: 1.1rem; margin-bottom: 12px; }
.pillar p { color: var(--c-text-2); font-size: 14.5px; margin: 0; }

/* ============ Stats ============ */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; text-align: center; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2,1fr); } }
.stat-value {
  font-size: clamp(2rem,4vw,3rem); font-weight: 800; color: var(--c-primary);
  letter-spacing: -.02em; display: block; margin-bottom: 6px; font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 14px; color: var(--c-text-2); }

/* ============ Process ============ */
.process-item {
  display: grid; grid-template-columns: 84px 1fr; gap: 24px; padding: 30px 0;
  border-bottom: 1px solid var(--c-divider); align-items: flex-start;
}
.process-item:last-child { border-bottom: none; }
.process-n {
  font-family: ui-monospace,"SF Mono",monospace; font-size: 34px; font-weight: 800;
  color: var(--c-primary); opacity: .35; letter-spacing: -.04em;
}
.process-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.process-body p { color: var(--c-text-2); font-size: 15px; margin: 0; }

/* ============ CTA Band ============ */
.cta-band {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-head) 100%);
  color: #fff; padding: 68px 0; position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 60% at 80% 20%, rgba(0,137,123,.32) 0%, transparent 50%);
}
.cta-band-inner { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
@media (max-width: 720px) { .cta-band-inner { grid-template-columns: 1fr; } }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,.85); margin: 0; }
.cta-band .btn-industrial { background: #fff; color: var(--c-primary); }
.cta-band .btn-industrial:hover { background: var(--c-surface); }

/* ============ Footer ============ */
.footer { background: var(--c-dark); color: rgba(255,255,255,.78); padding: 60px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 56px; margin-bottom: 34px; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }
.footer h4 { color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 9px; }
.footer a { color: rgba(255,255,255,.66); }
.footer a:hover { color: #fff; }
.footer-brand { font-size: 19px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.footer-tag { color: rgba(255,255,255,.55); font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.10); padding-top: 24px;
  font-size: 13px; color: rgba(255,255,255,.45);
}

/* ============ 询盘表单 ============ */
.inquire-wrap { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: flex-start; }
@media (max-width: 900px) { .inquire-wrap { grid-template-columns: 1fr; gap: 32px; } }
.inquire-side .meta { color: var(--c-text-2); font-size: 14.5px; }
.inquire-side ul { padding-left: 1.2em; color: var(--c-text-2); font-size: 14.5px; }
.inquire-side ul li { margin-bottom: 7px; }
.form {
  background: #fff; border: 1px solid var(--c-divider); border-radius: var(--radius-lg);
  padding: 36px; box-shadow: var(--shadow-md);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form-row.single { grid-template-columns: 1fr; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--c-text-2); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--c-divider);
  border-radius: 9px; font-size: 15px; font-family: inherit; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(21,101,192,.10);
}
.field textarea { min-height: 100px; resize: vertical; }
.field .hint { font-size: 12px; color: var(--c-text-3); margin-top: 4px; }
.field.required label::after { content: " *"; color: var(--c-warn); }
.form-submit { margin-top: 12px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-status { font-size: 14px; padding: 9px 14px; border-radius: 9px; display: none; }
.form-status.ok { color: #1e7d4f; background: rgba(46,125,50,.09); display: inline-block; }
.form-status.err { color: #c62828; background: rgba(229,57,53,.09); display: inline-block; }

/* ============ 滚动动效 ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ============ 关于页 ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.about-card {
  background: #fff; border-radius: var(--radius-lg); padding: 36px;
  border: 1px solid var(--c-divider); box-shadow: var(--shadow-md);
}
.kv { display: grid; grid-template-columns: 190px 1fr; gap: 12px 24px; margin: 16px 0 0; }
.kv dt { color: var(--c-text-2); font-weight: 600; }
.kv dd { margin: 0; }
@media (max-width: 600px) { .kv { grid-template-columns: 1fr; gap: 4px 0; } .kv dt { font-weight: 700; margin-top: 12px; } }

.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }