/* ============================================
   策宝科技官网 — DMD数字化制造定义系统
   配色：科技深蓝 + 电光青蓝渐变
   风格：工业科技感 + 现代B2B
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --primary-deep: #051024;
  --primary: #0b1d4a;
  --primary-mid: #0f2d6b;
  --primary-light: #143d8a;
  --accent: #1a8fe3;
  --accent-glow: #38bdf8;
  --accent-light: #e0f4ff;
  --accent-soft: #bae6fd;
  --gradient-hero: linear-gradient(135deg, #051024 0%, #0b1d4a 30%, #0f2d6b 60%, #143d8a 100%);
  --gradient-accent: linear-gradient(135deg, #1a8fe3 0%, #38bdf8 100%);
  --gradient-card: linear-gradient(180deg, rgba(26,143,227,.04) 0%, rgba(11,29,74,.02) 100%);
  --text: #1e293b;
  --text-mid: #475569;
  --text-light: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-subtle: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.03);
  --shadow-md: 0 4px 20px rgba(0,0,0,.05), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.04);
  --shadow-glow: 0 8px 32px rgba(26,143,227,.15);
  --shadow-card: 0 1px 3px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04), 0 0 0 1px rgba(0,0,0,.02);
  --glass-bg: rgba(255,255,255,.72);
  --glass-border: rgba(255,255,255,.4);
  --glass-blur: saturate(180%) blur(20px);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --nav-height: 68px;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.8;
  background: var(--bg);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color .25s; }
a:hover { color: var(--primary-mid); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 28px; }
.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-alt::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 60%; max-width: 600px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.section-title { font-size: 34px; font-weight: 800; color: var(--primary); text-align: center; margin-bottom: 12px; letter-spacing: .5px; }
.section-desc { text-align: center; color: var(--text-mid); max-width: 640px; margin: 0 auto 56px; font-size: 16px; line-height: 1.7; }
.sub-title { font-size: 23px; font-weight: 700; color: var(--primary); text-align: center; margin: 64px 0 36px; position: relative; }
.sub-title::after {
  content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
  width: 48px; height: 3px; border-radius: 2px; background: var(--gradient-accent);
}

/* ============================================ 导航栏 */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-height);
  background: var(--glass-bg); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border); z-index: 1000;
  transition: all .35s cubic-bezier(.4, 0, .2, 1);
}
.navbar.scrolled { background: rgba(255,255,255,.88); box-shadow: 0 4px 24px rgba(0,0,0,.06); border-bottom-color: rgba(226,232,240,.8); }
.nav-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 28px; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 12px; color: var(--primary); font-weight: 700; font-size: 16px; }
.nav-logo-img { height: 44px; width: auto; border-radius: 4px; }
.nav-brand { color: var(--primary); }
.nav-links { display: flex; list-style: none; gap: 36px; }
.nav-links a { color: var(--text-mid); font-size: 14.5px; font-weight: 500; transition: color .25s; position: relative; padding: 4px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; border-radius: 1px; background: var(--gradient-accent); transition: width .3s cubic-bezier(.4, 0, .2, 1); }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--primary); border-radius: 1px; transition: all .3s; }

/* ============================================ Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; padding-top: var(--nav-height); }
.hero-bg { position: absolute; inset: 0; background: var(--gradient-hero); }
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(56,189,248,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(56,189,248,.03) 1px, transparent 1px);
  background-size: 60px 60px; animation: gridShift 20s linear infinite;
}
@keyframes gridShift { 0% { transform: translate(0, 0); } 100% { transform: translate(60px, 60px); } }
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(3,12,35,.55) 0%, rgba(5,18,45,.4) 50%, rgba(3,12,35,.55) 100%);
}
.hero-bg-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 1; filter: saturate(1) brightness(1); }
.geo-orb { position: absolute; border-radius: 50%; background: radial-gradient(circle, rgba(56,189,248,.15), transparent 70%); animation: orbFloat 8s ease-in-out infinite; }
.geo-orb-1 { width: 400px; height: 400px; top: -100px; right: -80px; }
.geo-orb-2 { width: 250px; height: 250px; bottom: -60px; left: -60px; animation-delay: -4s; }
.geo-orb-3 { width: 180px; height: 180px; top: 40%; left: 60%; animation-delay: -2s; }
@keyframes orbFloat { 0%, 100% { transform: translateY(0) scale(1); opacity: .6; } 50% { transform: translateY(-30px) scale(1.08); opacity: .9; } }
.hero-content { position: relative; text-align: center; color: #fff; padding: 60px 28px; max-width: 860px; z-index: 1; text-shadow: 0 2px 20px rgba(0,0,0,.8), 0 0 40px rgba(0,0,0,.4); }
.hero-badge { display: inline-block; border: 1px solid rgba(56,189,248,.5); border-radius: 24px; padding: 8px 28px; font-size: 13px; letter-spacing: 3px; margin-bottom: 32px; opacity: 1; backdrop-filter: blur(12px); background: rgba(56,189,248,.08); color: #7dd3fc; font-weight: 600; }
.hero-title { font-size: 52px; font-weight: 800; letter-spacing: 2px; line-height: 1.25; margin-bottom: 20px; color: #fff; filter: drop-shadow(0 2px 8px rgba(56,189,248,.3)); }
.hero-subtitle { font-size: 18px; opacity: 1; font-weight: 400; margin-bottom: 52px; line-height: 1.7; letter-spacing: 1px; color: rgba(255,255,255,.95); }
.hero-stats { display: flex; justify-content: center; gap: 56px; margin-bottom: 48px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-num { font-size: 44px; font-weight: 900; color: #38bdf8; line-height: 1.1; }
.stat-suffix { font-size: 18px; font-weight: 700; color: #38bdf8; }
.stat-text { font-size: 22px; font-weight: 700; color: #38bdf8; display: block; line-height: 1.3; }
.stat-label { font-size: 13px; opacity: .55; margin-top: 6px; display: block; letter-spacing: .5px; }
.hero-cta { display: inline-block; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.28); color: #fff; font-size: 15px; font-weight: 600; padding: 13px 40px; border-radius: 28px; transition: all .35s cubic-bezier(.4, 0, .2, 1); letter-spacing: 1px; backdrop-filter: blur(8px); position: relative; overflow: hidden; }
.hero-cta:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.5); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(56,189,248,.2); }
.scroll-indicator { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); width: 28px; height: 44px; border: 2px solid rgba(255,255,255,.25); border-radius: 14px; display: flex; justify-content: center; z-index: 1; }
.scroll-indicator::after { content: ''; width: 4px; height: 8px; background: rgba(255,255,255,.5); border-radius: 2px; margin-top: 8px; animation: scrollBounce 2s ease infinite; }
@keyframes scrollBounce { 0%, 100% { transform: translateY(0); opacity: .5; } 50% { transform: translateY(8px); opacity: 1; } }

/* ============================================ 关于我们 */
.about-grid { display: grid; grid-template-columns: 1fr 340px; gap: 52px; margin-bottom: 56px; }
.about-main p { margin-bottom: 18px; color: var(--text-mid); font-size: 15px; line-height: 1.95; }
.about-aside { display: flex; flex-direction: column; gap: 16px; }
.info-card { background: #fff; border-radius: var(--radius); padding: 20px 22px; border: 1px solid var(--border); border-left: 4px solid var(--accent); box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .25s; }
.info-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.info-label { font-size: 12px; color: var(--text-light); margin-bottom: 4px; letter-spacing: .5px; text-transform: uppercase; }
.info-value { font-size: 16px; font-weight: 700; color: var(--primary); }
.value-trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 26px; text-align: center; box-shadow: var(--shadow-card); transition: all .35s cubic-bezier(.4, 0, .2, 1); }
.value-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--accent-soft); }
.value-icon { font-size: 34px; margin-bottom: 14px; }
.value-card h4 { font-size: 18px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.value-card p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }

/* ============================================ 痛点vs方案 */
/* ============================================ 痛点vs方案 左右分栏 */
.pain-split { display: flex; flex-direction: column; gap: 18px; }
.pain-split-head {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: stretch; margin-bottom: 6px;
}
.pain-split-col {
  border-radius: var(--radius); padding: 18px 24px; display: flex; align-items: center; gap: 14px;
  border: 1px solid; position: relative; overflow: hidden;
}
.pain-split-col::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
}
.pain-split-col-bad { background: linear-gradient(135deg, #fef2f2 0%, #fff 100%); border-color: #fecaca; }
.pain-split-col-bad::before { background: #ef4444; }
.pain-split-col-good { background: linear-gradient(135deg, #ecfdf5 0%, #fff 100%); border-color: #a7f3d0; }
.pain-split-col-good::before { background: #10b981; }
.pain-split-num {
  font-family: 'Consolas','SF Mono',monospace; font-size: 28px; font-weight: 900; letter-spacing: 1px;
}
.pain-split-col-bad .pain-split-num { color: #b91c1c; }
.pain-split-col-good .pain-split-num { color: #047857; }
.pain-split-label { font-size: 17px; font-weight: 700; }
.pain-split-col-bad .pain-split-label { color: #b91c1c; }
.pain-split-col-good .pain-split-label { color: #047857; }
.pain-split-vs {
  display: flex; align-items: center; justify-content: center;
  font-family: 'Consolas','SF Mono',monospace; font-weight: 900; font-size: 16px; color: var(--accent);
  background: var(--accent-light); border: 1px solid var(--accent-soft); border-radius: 999px;
  width: 56px; padding: 0 6px; letter-spacing: 1px;
}
.pain-split-row {
  display: grid; grid-template-columns: 1fr 56px 1fr; gap: 18px; align-items: stretch;
}
.pain-split-cell {
  border-radius: var(--radius); padding: 24px 26px; border: 1px solid; transition: all .3s;
  background: #fff; position: relative; overflow: hidden;
}
.pain-split-cell::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; transition: width .3s;
}
.pain-split-cell-bad { border-color: #fee2e2; }
.pain-split-cell-bad::before { background: #ef4444; }
.pain-split-cell-good { border-color: #d1fae5; }
.pain-split-cell-good::before { background: #10b981; }
.pain-split-cell:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.pain-split-cell:hover::before { width: 5px; }
.pain-split-cell h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.pain-split-cell-bad h4 { color: #b91c1c; }
.pain-split-cell-good h4 { color: #047857; }
.pain-split-cell p { font-size: 14px; color: var(--text-mid); line-height: 1.85; }
.pain-split-arrow {
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: var(--accent);
  background: var(--accent-light); border: 1px dashed var(--accent-soft); border-radius: 999px;
}


/* ============================================ 章节标题（工业科技风） */
.section-head { text-align: center; margin-bottom: 56px; position: relative; }
.section-tag {
  display: inline-block; font-family: 'Consolas','Monaco','SF Mono',monospace;
  font-size: 12px; letter-spacing: 3px; color: var(--accent);
  background: var(--accent-light); border: 1px solid var(--accent-soft);
  border-radius: 4px; padding: 4px 14px; margin-bottom: 18px; font-weight: 600;
}
.section-head .section-title { margin-bottom: 14px; }

/* ============================================ 产品架构（PPT第5页原图） */
.arch-diagram {
  position: relative; margin-bottom: 24px; padding: 16px;
  background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.arch-diagram-img { position: relative; display: block; width: 100%; max-width: 1280px; margin: 0 auto; height: auto; }
.arch-diagram-corners { position: absolute; inset: 16px; pointer-events: none; }
.arch-diagram-corners .corner {
  position: absolute; width: 18px; height: 18px;
  border-color: var(--accent); border-style: solid; border-width: 0;
}
.corner-tl { top: 0; left: 0; border-top-width: 2px; border-left-width: 2px; }
.corner-tr { top: 0; right: 0; border-top-width: 2px; border-right-width: 2px; }
.corner-bl { bottom: 0; left: 0; border-bottom-width: 2px; border-left-width: 2px; }
.corner-br { bottom: 0; right: 0; border-bottom-width: 2px; border-right-width: 2px; }

.arch-three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 56px; }
.arch-block { background: #fff; border: 2px solid var(--border); border-radius: var(--radius-lg); padding: 32px 26px; box-shadow: var(--shadow-card); transition: all .35s; position: relative; overflow: hidden; }
.arch-block::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; }
.arch-block-design::before { background: linear-gradient(90deg, #1a8fe3, #38bdf8); }
.arch-block-build::before { background: linear-gradient(90deg, #0f2d6b, #1a8fe3); }
.arch-block-deliver::before { background: linear-gradient(90deg, #143d8a, #0f2d6b); }
.arch-block-glow {
  position: absolute; top: -40%; right: -20%; width: 60%; height: 60%;
  background: radial-gradient(circle, rgba(56,189,248,.18), transparent 70%);
  pointer-events: none; opacity: 0; transition: opacity .4s;
}
.arch-block:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg), var(--shadow-glow); border-color: var(--accent-soft); }
.arch-block:hover .arch-block-glow { opacity: 1; }
.arch-tag {
  display: inline-block; background: var(--gradient-accent); color: #fff;
  border-radius: 16px; padding: 5px 18px; font-size: 13px; font-weight: 600;
  margin-bottom: 16px; font-family: 'Consolas','SF Mono',monospace; letter-spacing: .5px;
}
.arch-block h4 { font-size: 19px; color: var(--primary); margin-bottom: 16px; font-weight: 700; }
.arch-block ul { list-style: none; margin-bottom: 20px; }
.arch-block ul li { font-size: 14px; color: var(--text-mid); padding: 6px 0; padding-left: 20px; position: relative; }
.arch-block ul li::before { content: '▸'; position: absolute; left: 0; color: var(--accent); }
.arch-sub { background: var(--bg-alt); border-radius: var(--radius-sm); padding: 16px 18px; border-left: 3px solid var(--accent); }
.arch-sub h5 { font-size: 14px; color: var(--primary); margin-bottom: 6px; font-weight: 600; }
.arch-sub p { font-size: 13px; color: var(--text-mid); line-height: 1.7; }
.arch-foundation {
  background: linear-gradient(180deg, var(--primary-deep) 0%, var(--primary) 100%);
  border-radius: var(--radius-lg); padding: 40px 32px; color: #fff; position: relative; overflow: hidden;
}
.arch-foundation::before {
  content: ''; position: absolute; inset: 0; opacity: .25;
  background-image: linear-gradient(rgba(56,189,248,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(56,189,248,.18) 1px, transparent 1px);
  background-size: 24px 24px;
}
.arch-foundation .sub-title { color: #fff; position: relative; }
.arch-foundation .sub-title::after { background: var(--gradient-accent); }
.foundation-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.found-item {
  background: rgba(255,255,255,.06); border: 1px solid rgba(56,189,248,.25);
  border-radius: var(--radius-sm); padding: 14px 16px; text-align: center;
  font-size: 13px; color: #e0f4ff; font-weight: 600; transition: all .25s;
  backdrop-filter: blur(8px);
}
.found-item:hover { border-color: var(--accent-glow); background: rgba(56,189,248,.14); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(56,189,248,.25); }

/* ============================================ 核心技术 */
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.tech-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 28px; box-shadow: var(--shadow-card); position: relative; overflow: hidden; transition: all .35s; }
.tech-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-accent); opacity: 0; transition: opacity .35s; }
.tech-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg), var(--shadow-glow); border-color: var(--accent-soft); }
.tech-card:hover::before { opacity: 1; }
.tech-num { font-size: 40px; font-weight: 900; background: linear-gradient(135deg, var(--accent-soft), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: 14px; }
.tech-card h4 { font-size: 18px; color: var(--primary); margin-bottom: 12px; font-weight: 700; }
.tech-card p { font-size: 14px; color: var(--text-mid); line-height: 1.85; }

/* CAD适配 */
.cad-grid { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cad-item { background: #fff; border: 2px solid var(--border); border-radius: var(--radius-sm); padding: 14px 24px; font-size: 15px; font-weight: 700; color: var(--primary); transition: all .3s; box-shadow: var(--shadow-sm); }
.cad-item:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow-glow); }

/* ============================================ DMD重塑智造 */
.reshape-list { display: flex; flex-direction: column; gap: 16px; }
.reshape-item { display: grid; grid-template-columns: 1fr 50px 1fr; gap: 20px; align-items: stretch; }
.reshape-pain, .reshape-solution { border-radius: var(--radius); padding: 22px 24px; border: 1px solid; }
.reshape-pain { background: #fff; border-color: #fee2e2; }
.reshape-solution { background: #fff; border-color: #d1fae5; }
.reshape-label { display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 12px; margin-bottom: 10px; background: #fef2f2; color: #b91c1c; }
.reshape-label-good { background: #ecfdf5; color: #047857; }
.reshape-pain h4, .reshape-solution h4 { font-size: 16px; margin-bottom: 8px; font-weight: 700; }
.reshape-pain h4 { color: #b91c1c; }
.reshape-solution h4 { color: #047857; }
.reshape-pain p, .reshape-solution p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }
.reshape-arrow { display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--accent); font-weight: 700; }

/* ============================================ 案例分享 */
.case-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.case-stat {
  background: linear-gradient(180deg, #fff 0%, var(--accent-light) 200%); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 24px; text-align: center; box-shadow: var(--shadow-card);
  transition: all .35s; position: relative; overflow: hidden;
}
.case-stat::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-accent); transform: scaleX(0); transition: transform .35s; transform-origin: left; }
.case-stat:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg), var(--shadow-glow); border-color: var(--accent-soft); }
.case-stat:hover::before { transform: scaleX(1); }
.case-stat-num { display: block; font-size: 44px; font-weight: 900; font-family: 'Consolas','SF Mono',monospace; background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2; letter-spacing: 1px; }
.case-stat-label { display: block; font-size: 14px; color: var(--text-mid); margin-top: 8px; }
.case-dept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 56px; }
.case-dept { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow-sm); transition: all .3s; position: relative; overflow: hidden; }
.case-dept::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gradient-accent); transform: scaleY(0); transition: transform .3s; transform-origin: top; }
.case-dept:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent-soft); }
.case-dept:hover::before { transform: scaleY(1); }
.dept-num { font-size: 24px; font-weight: 900; font-family: 'Consolas','SF Mono',monospace; color: var(--accent); margin-bottom: 8px; letter-spacing: 1px; }
.case-dept h4 { font-size: 17px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.case-dept p { font-size: 13.5px; color: var(--text-mid); line-height: 1.8; }
.coverage-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.coverage-item { background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow-sm); transition: all .25s; }
.coverage-item:hover { transform: translateX(4px); box-shadow: var(--shadow-md); }
.coverage-item h5 { font-size: 16px; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
.coverage-item p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }

/* ============================================ 业务流程 */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 36px; }
.flow-phase { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 22px; box-shadow: var(--shadow-card); transition: all .35s; }
.flow-phase:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.flow-phase-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-alt); }
.flow-num { font-size: 28px; font-weight: 900; background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.flow-phase-head h4 { font-size: 17px; color: var(--primary); font-weight: 700; }
.flow-step { margin-bottom: 16px; }
.flow-step:last-child { margin-bottom: 0; }
.flow-step h5 { font-size: 14px; color: var(--primary); margin-bottom: 4px; font-weight: 600; }
.flow-step p { font-size: 13px; color: var(--text-mid); line-height: 1.7; }
.flow-summary { background: linear-gradient(135deg, rgba(26,143,227,.06), rgba(56,189,248,.03)); border: 1px solid var(--accent-soft); border-radius: var(--radius); padding: 24px 28px; }
.flow-summary p { font-size: 15px; color: var(--primary-mid); line-height: 1.9; font-weight: 500; }

/* ============================================ 可视化评审 */
.review-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 36px; }
.review-step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 18px; text-align: center; box-shadow: var(--shadow-sm); transition: all .3s; }
.review-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent-soft); }
.review-step-num { width: 40px; height: 40px; background: var(--gradient-accent); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; margin: 0 auto 14px; }
.review-step h4 { font-size: 15px; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
.review-step p { font-size: 13px; color: var(--text-mid); line-height: 1.7; }
.review-value { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 48px; }
.review-bad, .review-good { border-radius: var(--radius); padding: 24px 26px; border: 1px solid; }
.review-bad { background: #fff; border-color: #fee2e2; }
.review-good { background: #fff; border-color: #d1fae5; }
.review-bad h4 { color: #b91c1c; margin-bottom: 10px; font-size: 16px; }
.review-good h4 { color: #047857; margin-bottom: 10px; font-size: 16px; }
.review-bad p, .review-good p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }
.path-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.path-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow-sm); transition: all .3s; }
.path-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.path-phase { display: inline-block; font-size: 12px; font-weight: 700; color: var(--accent); background: var(--accent-light); padding: 4px 12px; border-radius: 12px; margin-bottom: 12px; }
.path-item h5 { font-size: 16px; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
.path-item p { font-size: 13.5px; color: var(--text-mid); line-height: 1.75; }

/* ============================================ 设计院价值 */
.value-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.value-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 28px; box-shadow: var(--shadow-card); transition: all .35s; display: flex; gap: 20px; align-items: flex-start; }
.value-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--accent-soft); }
.value-item-num { font-size: 36px; font-weight: 900; background: linear-gradient(135deg, var(--accent-soft), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; flex-shrink: 0; }
.value-item h4 { font-size: 18px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.value-item p { font-size: 14px; color: var(--text-mid); line-height: 1.85; }

/* ============================================ 生产现场 */
.field-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 56px; }
.field-bad, .field-good { border-radius: var(--radius-lg); padding: 30px 28px; border: 1px solid; }
.field-bad { background: #fff; border-color: #fee2e2; }
.field-good { background: #fff; border-color: #d1fae5; }
.field-bad h3, .field-good h3 { font-size: 18px; margin-bottom: 18px; font-weight: 700; }
.field-bad h3 { color: #b91c1c; }
.field-good h3 { color: #047857; }
.field-bad ul, .field-good ul { list-style: none; }
.field-bad li, .field-good li { font-size: 14px; color: var(--text-mid); padding: 10px 0; border-bottom: 1px solid var(--border-light); line-height: 1.8; }
.field-bad li:last-child, .field-good li:last-child { border-bottom: none; }
.field-good li strong { color: var(--primary); }
.field-flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.field-flow-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 14px; text-align: center; box-shadow: var(--shadow-sm); transition: all .3s; }
.field-flow-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent-soft); }
.field-flow-num { display: inline-block; width: 32px; height: 32px; background: var(--gradient-accent); color: #fff; border-radius: 50%; line-height: 32px; font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.field-flow-item h5 { font-size: 14px; color: var(--primary); margin-bottom: 6px; font-weight: 700; }
.field-flow-item p { font-size: 12px; color: var(--text-mid); line-height: 1.6; }

/* ============================================ 应用场景 */
.scene-block { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 32px; margin-bottom: 32px; box-shadow: var(--shadow-card); }
.scene-block-title { font-size: 22px; color: var(--primary); margin-bottom: 24px; font-weight: 700; padding-left: 16px; border-left: 4px solid var(--accent); }
.scene-steps { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.scene-step { background: var(--accent-light); color: var(--primary-mid); border-radius: 22px; padding: 10px 20px; font-size: 14px; font-weight: 600; transition: all .25s; }
.scene-step:hover { background: var(--accent); color: #fff; }
.scene-functions { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.scene-func { background: var(--bg-alt); border-radius: var(--radius); padding: 22px 24px; border-left: 4px solid var(--accent); }
.scene-func h5 { font-size: 16px; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
.scene-func p { font-size: 14px; color: var(--text-mid); line-height: 1.8; }
.scene-showcase { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 24px; }
.scene-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); transition: all .35s; }
.scene-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.scene-item img { width: 100%; height: 320px; object-fit: cover; display: block; }
.scene-caption { text-align: center; padding: 14px 18px; font-size: 14px; color: var(--text-mid); font-weight: 500; background: var(--bg-alt); border-top: 1px solid var(--border); }

/* ============================================ 成效汇总 */
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; margin-bottom: 48px; }
.result-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 24px; text-align: center; box-shadow: var(--shadow-card); transition: all .35s; }
.result-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg), var(--shadow-glow); border-color: var(--accent-soft); }
.result-num { font-size: 44px; font-weight: 900; background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2; margin-bottom: 12px; }
.result-card h4 { font-size: 16px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.result-card p { font-size: 13.5px; color: var(--text-mid); line-height: 1.75; }
.result-highlights { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.highlight-item { background: linear-gradient(135deg, rgba(26,143,227,.04), rgba(56,189,248,.02)); border: 1px solid var(--accent-soft); border-radius: var(--radius-lg); padding: 28px 26px; }
.highlight-item h4 { font-size: 17px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.highlight-item p { font-size: 14px; color: var(--text-mid); line-height: 1.85; }

/* ============================================ 特点对比 */
.feature-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px; }
.feature-vs { border-radius: var(--radius-lg); padding: 32px 28px; border: 2px solid; }
.feature-vs-general { background: #fff; border-color: var(--border); }
.feature-vs-dmd { background: linear-gradient(180deg, rgba(26,143,227,.04), #fff); border-color: var(--accent); }
.feature-vs-head { margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.feature-vs-head h4 { font-size: 19px; margin-bottom: 4px; }
.feature-vs-general h4 { color: var(--text-mid); }
.feature-vs-dmd h4 { color: var(--primary); }
.feature-vs-head p { font-size: 14px; color: var(--text-light); font-style: italic; }
.feature-vs > p { font-size: 14px; color: var(--text-mid); line-height: 1.9; }
.feature-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-point { background: var(--bg-alt); border-radius: var(--radius); padding: 28px 22px; text-align: center; transition: all .3s; border: 1px solid transparent; }
.feature-point:hover { background: #fff; border-color: var(--border); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-icon { font-size: 30px; margin-bottom: 12px; }
.feature-point h5 { font-size: 16px; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.feature-point p { font-size: 13.5px; color: var(--text-mid); line-height: 1.75; }

/* ============================================ 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; font-size: 30px; line-height: 1; flex-shrink: 0; }
.contact-item h5 { font-size: 16px; color: var(--primary); margin-bottom: 4px; }
.contact-item p { font-size: 15px; color: var(--text-mid); }
.contact-qr { align-items: flex-start; }
.contact-wechat-icon { padding-top: 0; }
.contact-wechat-icon img { display: block; width: 34px; height: 34px; object-fit: cover; border-radius: 8px; }
.contact-qr-content { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.contact-qr-icon { width: 118px; }
.contact-qr-icon img { width: 118px; height: 118px; object-fit: contain; border-radius: var(--radius-sm); border: 1px solid var(--border-light); display: block; }
.contact-qr h5 { font-size: 16px; color: var(--primary); margin-bottom: 0; }
.contact-qr p { font-size: 14px; color: var(--text-mid); line-height: 1.6; margin: 0; }
.contact-form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 28px; box-shadow: var(--shadow-card); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; color: var(--primary); margin-bottom: 6px; font-weight: 600; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 14px; font-family: inherit; transition: border-color .25s, box-shadow .25s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26,143,227,.1); }
.form-group textarea { resize: vertical; }
.form-submit { width: 100%; background: var(--gradient-accent); color: #fff; border: none; padding: 14px; border-radius: var(--radius-sm); font-size: 16px; font-weight: 600; cursor: pointer; transition: all .3s; box-shadow: 0 4px 14px rgba(26,143,227,.3); }
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,143,227,.4); }
.form-submit:active { transform: translateY(0); }

/* ============================================ Footer */
.footer { background: var(--primary-deep); color: rgba(255,255,255,.7); padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-logo-img { height: 30px; width: auto; border-radius: 3px; }
.footer-name { color: #fff; font-size: 16px; font-weight: 600; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,.6); font-size: 14px; transition: color .25s; }
.footer-links a:hover { color: var(--accent-glow); }
.footer-contact p { font-size: 14px; color: rgba(255,255,255,.6); margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.4); }

/* ============================================ 动画 */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.4,0,.2,1), transform .7s cubic-bezier(.4,0,.2,1); }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in[data-delay="1"] { transition-delay: .1s; }
.fade-in[data-delay="2"] { transition-delay: .2s; }
.fade-in[data-delay="3"] { transition-delay: .3s; }
.fade-in[data-delay="4"] { transition-delay: .4s; }

/* ============================================ 响应式 */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-aside { flex-direction: row; flex-wrap: wrap; }
  .info-card { flex: 1; min-width: 150px; }
  .value-trio { grid-template-columns: 1fr; }
  .pain-split-head { grid-template-columns: 1fr; }
  .pain-split-vs { width: 40px; margin: 0 auto; }
  .pain-split-row { grid-template-columns: 1fr; }
  .pain-split-arrow { transform: rotate(90deg); width: 40px; margin: 0 auto; }
  .arch-three { grid-template-columns: 1fr; }
  .foundation-grid { grid-template-columns: repeat(2, 1fr); }
  .reshape-item { grid-template-columns: 1fr; }
  .reshape-arrow { transform: rotate(90deg); }
  .case-dept-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .review-steps { grid-template-columns: repeat(3, 1fr); }
  .path-grid { grid-template-columns: repeat(2, 1fr); }
  .value-list { grid-template-columns: 1fr; }
  .field-flow { grid-template-columns: repeat(3, 1fr); }
  .scene-functions { grid-template-columns: 1fr; }
  .scene-showcase { grid-template-columns: 1fr; }
  .feature-points { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 27px; }
  .sub-title { font-size: 20px; margin: 48px 0 28px; }
  .nav-toggle { display: flex; }
  .nav-links { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,.96); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; gap: 0; border-bottom: 1px solid var(--border); box-shadow: 0 8px 28px rgba(0,0,0,.08); }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 10px 0; }
  .nav-links a { font-size: 16px; }
  .hero-title { font-size: 34px; }
  .hero-subtitle { font-size: 15px; }
  .hero-stats { gap: 28px; }
  .stat-num { font-size: 34px; }
  .stat-text { font-size: 19px; }
  .case-stats { grid-template-columns: 1fr; }
  .case-dept-grid { grid-template-columns: 1fr; }
  .coverage-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  .review-steps { grid-template-columns: 1fr 1fr; }
  .review-value { grid-template-columns: 1fr; }
  .path-grid { grid-template-columns: 1fr; }
  .field-compare { grid-template-columns: 1fr; }
  .field-flow { grid-template-columns: repeat(2, 1fr); }
  .scene-steps { flex-direction: column; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .result-highlights { grid-template-columns: 1fr; }
  .feature-compare { grid-template-columns: 1fr; }
  .feature-points { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-links { flex-direction: column; gap: 10px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .hero-stats { gap: 18px; }
  .stat-num { font-size: 28px; }
  .info-card { min-width: 100%; }
  .review-steps { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .field-flow { grid-template-columns: 1fr; }
  .contact-qr-icon { width: 104px; }
  .contact-qr-icon img { width: 104px; height: 104px; }
}