/* =========================================================
   河北阳升科技有限公司 · 全站公共样式（精修版 v2）
   设计目标：精致、统一、有节奏感的视觉
   ========================================================= */

/* ==== 设计令牌 ==== */
:root {
  /* 主色 — 太阳金系 */
  --gold-bright: #FFD966;
  --gold:        #FFC94A;
  --gold-2:      #FFB833;
  --gold-deep:   #F5A020;
  --gold-soft:   rgba(255, 200, 100, 0.85);
  --gold-faint:  rgba(255, 200, 100, 0.16);
  --gold-glow:   rgba(255, 200, 100, 0.30);

  /* 中性 */
  --text:        rgba(255, 255, 255, 0.72);
  --text-strong: rgba(255, 255, 255, 0.94);
  --text-muted:  rgba(255, 255, 255, 0.50);
  --text-faint:  rgba(255, 255, 255, 0.32);

  /* 边线 */
  --line:        rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --line-gold:   rgba(255, 200, 100, 0.30);

  /* 背景叠层 */
  --bg-glass:    rgba(20, 35, 60, 0.55);
  --bg-glass-2:  rgba(12, 24, 42, 0.88);
  --bg-card:     rgba(255, 255, 255, 0.03);
  --bg-card-h:   rgba(255, 255, 255, 0.06);

  /* 几何 */
  --max:         1200px;
  --r-sm:        10px;
  --r-md:        14px;
  --r-lg:        18px;
  --r-xl:        22px;
  --r-pill:      999px;

  /* 阴影 */
  --shadow-sm:   0 4px 16px rgba(0, 0, 0, 0.14);
  --shadow-card: 0 10px 32px rgba(0, 0, 0, 0.18), 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-up:   0 22px 60px rgba(255, 200, 100, 0.14), 0 12px 32px rgba(0, 0, 0, 0.28);

  /* 动效曲线 */
  --ease-out:    cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-2:  cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast:      0.2s;
  --t-mid:       0.4s;
  --t-slow:      0.8s;
}

/* ==== Reset & Base ==== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-strong);
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.7;
  font-weight: 300;
  background: #0d1a2e;
}

/* ==== 背景层 ==== */
.bg-layer {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 90% 60% at 50% 30%, rgba(120, 160, 210, 0.55) 0%, transparent 65%),
    radial-gradient(ellipse 110% 80% at 50% 50%, #6a8fc0 0%, #4a6fa0 40%, #2c4a75 75%, #1a2f4d 100%);
}
/* 顶部到底部的微暗渐变 */
.bg-fade {
  position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.22) 100%);
  pointer-events: none;
}
.bg-noise {
  position: fixed; inset: 0; z-index: -1;
  opacity: 0.04; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ==== 顶部导航 ==== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 60px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(20, 35, 60, 0.55);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  transition: background var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out);
}
.nav.scrolled {
  background: rgba(12, 24, 42, 0.88);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
}
.nav-inner {
  width: 100%; max-width: var(--max);
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: #fff;
  transition: opacity var(--t-fast) var(--ease-out);
}
.nav-logo:hover { opacity: 0.85; }
.nav-logo svg { width: 22px; height: 22px; }
.nav-logo span {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
}
.nav-links {
  display: flex; align-items: center; gap: 36px; list-style: none;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
  transition: color var(--t-fast) var(--ease-out);
}
.nav-links a:hover { color: #fff; }
.nav-links a::after {
  content: ""; position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--t-mid) var(--ease-out);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--gold); font-weight: 500; }
.nav-toggle {
  display: none;
  background: transparent; border: 0; color: #fff;
  width: 32px; height: 32px;
  cursor: pointer;
}

/* ==== 内页 Banner ==== */
.page-banner {
  padding: 168px 24px 80px;
  text-align: center;
  position: relative;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 50% 40% at 50% 30%, rgba(255, 200, 100, 0.10), transparent 70%);
  pointer-events: none;
}
.page-banner-label {
  font-size: 12px;
  letter-spacing: 5px;
  color: var(--gold-soft);
  text-transform: uppercase;
  margin-bottom: 22px;
  position: relative;
}
.page-banner-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 200;
  letter-spacing: 6px;
  line-height: 1.35;
  margin-bottom: 22px;
  position: relative;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.18);
}
.page-banner-desc {
  font-size: clamp(14px, 1.5vw, 16px);
  font-weight: 300;
  line-height: 1.95;
  color: var(--text);
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}
.page-banner-divider {
  width: 40px; height: 1px;
  background: rgba(255, 255, 255, 0.25);
  margin: 40px auto 0;
  position: relative;
}

/* ==== Section 通用 ==== */
.section {
  padding: 110px 24px;
  max-width: var(--max);
  margin: 0 auto;
}
.section-head {
  text-align: center;
  margin-bottom: 64px;
}
.section-label {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 5px;
  color: var(--gold-soft);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 200;
  letter-spacing: 3px;
  line-height: 1.4;
  margin-bottom: 20px;
  color: var(--text-strong);
}
.section-desc {
  font-size: clamp(13px, 1.5vw, 16px);
  font-weight: 300;
  line-height: 2;
  color: var(--text);
  max-width: 720px;
  margin: 0 auto;
}

/* ==== Hero ==== */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 80px 24px 80px;
  position: relative;
}
.logo-glow-wrap {
  position: relative; width: 200px; height: 200px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeInUp 1.2s var(--ease-out) 0.2s forwards;
}
.logo-glow-wrap::before {
  content: ""; position: absolute; inset: -40px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 195, 80, 0.40) 0%, rgba(255, 170, 50, 0.18) 35%, transparent 70%);
  filter: blur(20px);
  animation: breathe 4s ease-in-out infinite;
}
.logo-glow-wrap::after {
  content: ""; position: absolute; inset: -10px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 210, 120, 0.28) 0%, transparent 65%);
  filter: blur(8px);
  animation: breathe 4s ease-in-out infinite 0.5s;
}
.logo-svg {
  position: relative; z-index: 1;
  width: 156px; height: 156px;
  filter: drop-shadow(0 0 14px rgba(255, 190, 80, 0.55));
}
.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 200; letter-spacing: 5px; line-height: 1.25;
  margin-bottom: 22px;
  opacity: 0;
  animation: fadeInUp 1.2s var(--ease-out) 0.5s forwards;
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.22);
}
.hero-title strong { font-weight: 500; }
.hero-company {
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 300; letter-spacing: 8px;
  color: var(--text-strong);
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeInUp 1.2s var(--ease-out) 0.8s forwards;
}
.hero-company-en {
  font-size: clamp(12px, 1.4vw, 16px);
  font-weight: 300; letter-spacing: 3px;
  color: var(--text-muted);
  opacity: 0;
  animation: fadeInUp 1.2s var(--ease-out) 1s forwards;
}
.hero-divider {
  width: 56px; height: 1px;
  background: rgba(255, 255, 255, 0.28);
  margin: 28px 0;
  opacity: 0;
  animation: fadeIn 1s ease 1.2s forwards;
}
.hero-tagline {
  font-size: clamp(13px, 1.5vw, 16px);
  font-weight: 200; letter-spacing: 3px;
  color: var(--text-muted);
  max-width: 520px; line-height: 2;
  opacity: 0;
  animation: fadeInUp 1.2s var(--ease-out) 1.3s forwards;
}
.scroll-hint {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  opacity: 0;
  animation: fadeIn 1s ease 1.8s forwards;
}
.scroll-hint span {
  font-size: 10px; font-weight: 300;
  letter-spacing: 3px;
  color: var(--text-faint);
}
.scroll-hint .arrow {
  width: 16px; height: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.35);
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  transform: rotate(45deg);
  animation: scrollBounce 2s ease-in-out infinite;
}

/* ==== 数据条带 ==== */
.stats {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 110px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px 24px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              background var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.stat-card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at top, rgba(255, 200, 100, 0.10), transparent 65%);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
  pointer-events: none;
}
.stat-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-gold);
  background: var(--bg-card-h);
  box-shadow: var(--shadow-up);
}
.stat-card:hover::before { opacity: 1; }
.stat-num {
  font-size: clamp(30px, 3.8vw, 42px);
  font-weight: 200;
  letter-spacing: 1px;
  margin-bottom: 10px;
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--gold) 60%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1.1;
}
.stat-num small {
  font-size: 0.45em;
  font-weight: 300;
  color: var(--text-muted);
  margin-left: 4px;
  -webkit-text-fill-color: var(--text-muted);
}
.stat-label {
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--text);
}

/* ==== 业务入口 ==== */
.biz-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.biz-card {
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.015) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px 26px;
  text-decoration: none;
  color: inherit;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.biz-card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 200, 100, 0.14), transparent 65%);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
  pointer-events: none;
}
.biz-card:hover {
  transform: translateY(-8px);
  border-color: var(--line-gold);
  box-shadow: var(--shadow-up);
}
.biz-card:hover::before { opacity: 1; }
.biz-icon {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(255, 200, 100, 0.18), rgba(255, 200, 100, 0.04));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  color: var(--gold);
  transition: transform var(--t-mid) var(--ease-out-2), background var(--t-mid) var(--ease-out);
}
.biz-card:hover .biz-icon {
  transform: scale(1.05) rotate(-3deg);
  background: linear-gradient(135deg, rgba(255, 200, 100, 0.28), rgba(255, 200, 100, 0.10));
}
.biz-title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: var(--text-strong);
}
.biz-desc {
  font-size: 13px;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text);
}

/* ==== 关于 / 文字段 ==== */
.about-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}
.about-text p {
  font-size: clamp(14px, 1.6vw, 17px);
  font-weight: 300;
  line-height: 2.15;
  color: var(--text);
  max-width: 760px;
  margin: 0 auto;
}
.about-text p + p { margin-top: 22px; }
.about-text strong {
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.5px;
  padding: 0 2px;
}

/* ==== 厂区 ==== */
.factory-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.factory-card {
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.factory-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-gold);
  box-shadow: var(--shadow-up);
}
.factory-img {
  aspect-ratio: 16 / 9;
  width: 100%;
  background: linear-gradient(135deg, rgba(80, 120, 170, 0.4), rgba(40, 70, 120, 0.7));
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.factory-img::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(15, 28, 50, 0.6) 100%);
  z-index: 1;
}
.factory-img::after {
  content: "图片槽位 · factory image";
  color: rgba(255, 255, 255, 0.42);
  font-size: 12px;
  letter-spacing: 2px;
  z-index: 2;
}
.factory-img svg { position: absolute; opacity: 0.18; }
.factory-body { padding: 32px; }
.factory-name {
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 10px;
  color: var(--text-strong);
}
.factory-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gold);
  border: 1px solid var(--line-gold);
  padding: 4px 12px;
  border-radius: var(--r-pill);
  margin-bottom: 18px;
  background: var(--gold-faint);
}
.factory-desc {
  font-size: 14px;
  font-weight: 300;
  line-height: 2;
  color: var(--text);
}

/* ==== 资质 ==== */
.honor-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.honor-card {
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--bg-card);
  text-align: center;
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              background var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.honor-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold);
  background: var(--bg-card-h);
  box-shadow: var(--shadow-up);
}
.honor-icon {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(255, 200, 100, 0.20), rgba(255, 200, 100, 0.06));
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  transition: transform var(--t-mid) var(--ease-out-2);
}
.honor-card:hover .honor-icon { transform: scale(1.08); }
.honor-name {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  color: var(--text-strong);
}
.honor-desc {
  font-size: 12px;
  font-weight: 300;
  color: var(--text);
  line-height: 1.7;
}

/* ==== 业务详情 ==== */
.biz-detail {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex; flex-direction: column; gap: 30px;
}
.biz-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 40px 44px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 32px;
  align-items: start;
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.biz-item:hover {
  transform: translateY(-3px);
  border-color: var(--line-gold);
  box-shadow: var(--shadow-up);
}
.biz-item-num {
  font-size: 40px;
  font-weight: 200;
  letter-spacing: 1px;
  line-height: 1;
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.biz-item-name {
  font-size: 23px;
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 16px;
  color: var(--text-strong);
}
.biz-item-text {
  font-size: 14px;
  font-weight: 300;
  line-height: 2;
  color: var(--text);
}
.biz-item-text strong {
  color: var(--gold);
  font-weight: 500;
}
.biz-tags {
  margin-top: 18px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.biz-tag {
  font-size: 12px;
  font-weight: 300;
  color: var(--text);
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  transition: border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.biz-tag:hover {
  border-color: var(--line-gold);
  color: var(--gold);
}
.biz-gallery {
  grid-column: 1 / -1;
  display: grid;
  gap: 14px;
  margin-top: 10px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.biz-gallery.cols-1 { grid-template-columns: 1fr; }
.biz-gallery.cols-2 { grid-template-columns: repeat(2, 1fr); }
.biz-gallery.cols-3 { grid-template-columns: repeat(3, 1fr); }
.biz-gallery.cols-5 { grid-template-columns: repeat(5, 1fr); }
.biz-gallery.cols-3 { grid-template-columns: repeat(3, 1fr); }
.biz-img {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  aspect-ratio: 4 / 3;
  transition: border-color var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out-2);
}
.biz-img:hover {
  border-color: var(--line-gold);
  transform: translateY(-3px);
}
.biz-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease-out);
}
.biz-img:hover img { transform: scale(1.06); }
.biz-img-label {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 9px 12px;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-strong);
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.62));
  text-align: center;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex; flex-direction: column; gap: 12px;
}
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 22px;
  transition: border-color var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out);
}
.faq-item:hover { border-color: var(--line-strong); }
.faq-item[open] {
  border-color: var(--line-gold);
  background: rgba(255, 200, 100, 0.04);
}
.faq-item summary {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-strong);
  cursor: pointer;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  letter-spacing: 0.5px;
  outline: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--gold);
  font-weight: 200;
  transition: transform var(--t-mid) var(--ease-out);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--text);
}

/* ==== 业绩表格 ==== */
.case-block {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 60px;
}
.case-block-title {
  font-size: 23px;
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 8px;
  color: var(--text-strong);
}
.case-block-sub {
  font-size: 13px;
  font-weight: 300;
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}
.case-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow-x: auto;
}
.case-table {
  width: 100%; min-width: 720px;
  border-collapse: collapse;
  font-size: 13px;
}
.case-table thead th {
  background: rgba(255, 200, 100, 0.10);
  color: var(--gold);
  font-weight: 500;
  text-align: left;
  padding: 16px 18px;
  letter-spacing: 2px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.case-table tbody td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--text-strong);
  font-weight: 300;
  vertical-align: top;
  line-height: 1.65;
}
.case-table tbody tr { transition: background var(--t-fast) var(--ease-out); }
.case-table tbody tr:last-child td { border-bottom: 0; }
.case-table tbody tr:hover { background: rgba(255, 255, 255, 0.04); }
.case-table tbody td strong {
  color: var(--gold);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.5px;
}
.case-link {
  color: var(--gold);
  text-decoration: none;
  font-size: 12px;
  border-bottom: 1px dashed rgba(255, 200, 100, 0.4);
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out);
}
.case-link:hover { color: #fff; border-color: #fff; }
.case-content-link {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--text-strong);
  text-decoration: none;
  padding: 4px 6px;
  margin: -4px -6px;
  border-radius: 8px;
  transition: background var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.case-content-link:hover {
  background: rgba(255, 200, 100, 0.06);
  color: var(--gold);
}
.case-content-name {
  flex: 1;
  line-height: 1.55;
}
.case-thumb {
  width: 70px; height: 52px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
  flex-shrink: 0;
  transition: border-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.case-content-link:hover .case-thumb {
  border-color: var(--line-gold);
  transform: scale(1.06);
}
.case-link-arrow {
  font-size: 16px;
  color: var(--gold);
  opacity: 0.55;
  transition: opacity var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
  flex-shrink: 0;
}
.case-content-link:hover .case-link-arrow {
  opacity: 1;
  transform: translate(2px, -2px);
}
.case-link-list {
  list-style: none;
  padding: 0;
  font-size: 13px;
  line-height: 2.2;
  margin-top: 4px;
}

/* ==== 业绩卡片网格 ==== */
.case-cards {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.case-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  transition: transform var(--t-mid) var(--ease-out-2),
              border-color var(--t-mid) var(--ease-out),
              box-shadow var(--t-mid) var(--ease-out);
}
.case-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-gold);
  box-shadow: var(--shadow-up);
}
.case-card-no {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gold);
  background: rgba(255, 200, 100, 0.10);
  padding: 4px 12px;
  border-radius: var(--r-pill);
  margin-bottom: 16px;
  border: 1px solid var(--line-gold);
}
.case-card-client {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 10px;
  letter-spacing: 1.5px;
  color: var(--text-strong);
  line-height: 1.5;
}
.case-card-name {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text);
  margin-bottom: 16px;
}
.case-card-meta {
  display: flex;
  gap: 18px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  padding-top: 16px;
  letter-spacing: 0.5px;
}
.case-card-meta span { display: flex; align-items: center; gap: 6px; }

/* ==== 联系我们 ==== */
.contact-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.contact-card {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out);
}
.contact-card:hover {
  border-color: var(--line-gold);
  box-shadow: var(--shadow-card);
}
.contact-card h3 {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 24px;
  color: var(--text-strong);
  position: relative;
  padding-bottom: 14px;
}
.contact-card h3::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 24px; height: 1px;
  background: var(--gold);
}
.contact-list {
  list-style: none;
}
.contact-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
}
.contact-list li:last-child { border-bottom: 0; }
.contact-list .label {
  flex-shrink: 0;
  width: 64px;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--gold);
  font-weight: 400;
}
.contact-list .val {
  color: var(--text-strong);
  font-weight: 300;
}

.contact-form { display: flex; flex-direction: column; gap: 14px; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: #fff;
  padding: 13px 16px;
  border-radius: var(--r-md);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color var(--t-fast) var(--ease-out),
              background var(--t-fast) var(--ease-out);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--text-faint); }
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--line-gold);
  background: rgba(255, 255, 255, 0.06);
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-form button {
  margin-top: 8px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-2) 100%);
  color: #1a2f4d;
  border: 0;
  padding: 15px 22px;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  cursor: pointer;
  transition: transform var(--t-mid) var(--ease-out-2),
              box-shadow var(--t-mid) var(--ease-out);
}
.contact-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255, 200, 100, 0.35);
}
.contact-form button:active { transform: translateY(0); }
.form-note {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 6px;
  letter-spacing: 0.5px;
}

/* ==== 首页 CTA ==== */
.cta-block {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 110px;
  text-align: center;
}
.cta-box {
  border-radius: var(--r-xl);
  padding: 72px 40px;
  background:
    linear-gradient(135deg, rgba(255, 200, 100, 0.14) 0%, rgba(255, 200, 100, 0.02) 100%),
    rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-gold);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -50%; left: -10%;
  width: 60%; height: 200%;
  background: radial-gradient(circle, rgba(255, 200, 100, 0.10), transparent 60%);
  pointer-events: none;
}
.cta-title {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 200;
  letter-spacing: 4px;
  margin-bottom: 18px;
  color: var(--text-strong);
  position: relative;
}
.cta-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--text);
  max-width: 580px;
  margin: 0 auto 32px;
  line-height: 2;
  position: relative;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}
.cta-btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 3px;
  text-decoration: none;
  transition: transform var(--t-mid) var(--ease-out-2),
              box-shadow var(--t-mid) var(--ease-out),
              background var(--t-mid) var(--ease-out);
}
.cta-btn.primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-2) 100%);
  color: #1a2f4d;
}
.cta-btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(255, 200, 100, 0.38);
}
.cta-btn.ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-strong);
  color: #fff;
}
.cta-btn.ghost:hover {
  transform: translateY(-3px);
  border-color: var(--line-gold);
  background: rgba(255, 255, 255, 0.08);
}

/* ==== Footer ==== */
.footer {
  border-top: 1px solid var(--line);
  padding: 40px 24px 28px;
  text-align: center;
  background: rgba(15, 28, 50, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.footer p {
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 1px;
  color: var(--text-faint);
  line-height: 2.2;
}
.footer a {
  color: var(--text-faint);
  text-decoration: none;
  transition: color 0.3s ease;
}
.footer a:hover {
  color: #ffd083;
  text-decoration: underline;
}

/* ==== 动画 ==== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes breathe {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.10); }
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 0.4; }
  50% { transform: rotate(45deg) translate(5px, 5px); opacity: 1; }
}

/* ==== 滚动浮现 ==== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out-2), transform 0.9s var(--ease-out-2);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ==== 响应式 ==== */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 90px 24px; }
  .stats { padding-bottom: 90px; }
  .cta-block { padding-bottom: 90px; }
}
@media (max-width: 768px) {
  .nav { height: 56px; }
  .nav-inner { padding: 0 18px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-links.open {
    display: flex;
    position: absolute; top: 56px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(12, 24, 42, 0.96);
    backdrop-filter: blur(20px);
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open li { width: 100%; }
  .nav-links.open a {
    display: block;
    padding: 14px 22px;
    font-size: 14px;
  }

  .stats { grid-template-columns: repeat(2, 1fr); padding-bottom: 80px; }
  .biz-grid { grid-template-columns: 1fr; }
  .factory-grid { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: 1fr; }
  .case-cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .biz-item { grid-template-columns: 1fr; gap: 12px; padding: 28px 24px; }
  .biz-item-num { font-size: 32px; }
  .section { padding: 70px 20px; }
  .section-head { margin-bottom: 44px; }
  .stats { gap: 16px; }
  .biz-grid { gap: 16px; }
  .honor-grid { gap: 14px; }
  .case-cards { gap: 16px; }
  .logo-glow-wrap { width: 156px; height: 156px; margin-bottom: 26px; }
  .logo-svg { width: 122px; height: 122px; }
  .hero-title { letter-spacing: 3px; }
  .hero-company { letter-spacing: 4px; }
  .hero-company-en { letter-spacing: 2px; }
  .page-banner { padding: 130px 20px 60px; }
  .page-banner-title { letter-spacing: 4px; }
  .cta-box { padding: 48px 24px; }
  .contact-card { padding: 28px 22px; }
  .factory-body { padding: 24px; }
  .biz-item { padding: 28px 24px; }
  .hero { padding: 60px 20px 60px; }
}
/* ==== 小屏适配（480 以下，iPhone SE / 12 mini / Android 紧凑屏）==== */
@media (max-width: 480px) {
  /* Hero */
  .hero { padding: 50px 18px 50px; min-height: 92vh; }
  .logo-glow-wrap { width: 138px; height: 138px; margin-bottom: 22px; }
  .logo-svg { width: 108px; height: 108px; }
  .hero-title { font-size: 28px; letter-spacing: 3px; margin-bottom: 14px; line-height: 1.3; }
  .hero-company { font-size: 14px; letter-spacing: 4px; margin-bottom: 8px; }
  .hero-company-en { font-size: 10px; letter-spacing: 2px; }
  .hero-divider { width: 44px; margin: 20px 0; }
  .hero-tagline { font-size: 12px; letter-spacing: 2px; line-height: 1.85; }
  .scroll-hint { display: none; }

  /* 数据条带 — 2x2 紧凑布局 */
  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 16px 60px;
  }
  .stat-card { padding: 24px 14px; }
  .stat-num { font-size: 26px; margin-bottom: 6px; }
  .stat-num small { font-size: 0.42em; }
  .stat-label { font-size: 11px; letter-spacing: 2px; }

  /* Section 通用 */
  .section { padding: 60px 16px; }
  .section-head { margin-bottom: 40px; }
  .section-title { font-size: 24px; letter-spacing: 2px; margin-bottom: 12px; }
  .section-desc { font-size: 13px; line-height: 1.85; }

  /* 业务入口 */
  .biz-grid { grid-template-columns: 1fr; gap: 14px; padding: 0 16px 30px; }
  .biz-card { padding: 26px 22px; }
  .biz-icon { width: 46px; height: 46px; margin-bottom: 18px; }
  .biz-title { font-size: 17px; letter-spacing: 1.5px; margin-bottom: 8px; }
  .biz-desc { font-size: 12px; line-height: 1.75; }

  /* 厂区 */
  .factory-grid { grid-template-columns: 1fr; gap: 18px; padding: 0 16px 40px; }
  .factory-body { padding: 22px; }
  .factory-name { font-size: 18px; letter-spacing: 2px; margin-bottom: 6px; }
  .factory-tag { font-size: 10px; padding: 3px 10px; margin-bottom: 14px; }
  .factory-desc { font-size: 13px; line-height: 1.85; }
  .factory-img::after { font-size: 11px; }

  /* 资质 — 小屏保持 2 列，避免 6 行堆叠 */
  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0 16px; }
  .honor-card { padding: 22px 12px; }
  .honor-icon { width: 42px; height: 42px; margin-bottom: 12px; }
  .honor-name { font-size: 13px; letter-spacing: 1px; margin-bottom: 5px; }
  .honor-desc { font-size: 11px; line-height: 1.55; }

  /* 业务详情 */
  .biz-detail { gap: 18px; padding: 0 16px; }
  .biz-item { padding: 26px 22px; gap: 14px; }
  .biz-item-num { font-size: 32px; }
  .biz-item-name { font-size: 18px; letter-spacing: 2px; margin-bottom: 12px; }
  .biz-item-text { font-size: 13px; line-height: 1.85; }
  .biz-tags { gap: 6px; margin-top: 14px; }
  .biz-tag { font-size: 11px; padding: 4px 10px; }
  .biz-gallery { gap: 10px; padding-top: 22px; }
  .biz-gallery.cols-5 { grid-template-columns: repeat(2, 1fr); }
.biz-gallery.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .biz-img-label { font-size: 11px; padding: 7px 10px; }

  /* 业绩表格 — 紧凑内部 padding，配合横向滚动 */
  .case-block { padding: 0 16px 40px; }
  .case-block-title { font-size: 19px; letter-spacing: 2px; margin-bottom: 6px; }
  .case-block-sub { font-size: 12px; margin-bottom: 18px; }
  .case-table thead th { padding: 11px 12px; font-size: 11px; letter-spacing: 1.5px; }
  .case-table tbody td { padding: 12px 14px; font-size: 12px; line-height: 1.5; }
  .case-table tbody td strong { font-size: 13px; }
  .case-content-link { gap: 8px; padding: 2px 4px; margin: -2px -4px; }
  .case-thumb { width: 54px; height: 40px; }
  .case-link-arrow { font-size: 13px; }
  .case-link-list { font-size: 12px; line-height: 2; }

  /* 业绩卡 */
  .case-cards { gap: 14px; padding: 0 16px; }
  .case-card { padding: 24px 20px; }
  .case-card-no { font-size: 10px; padding: 3px 10px; margin-bottom: 12px; }
  .case-card-client { font-size: 15px; letter-spacing: 1px; margin-bottom: 8px; line-height: 1.45; }
  .case-card-name { font-size: 13px; line-height: 1.7; margin-bottom: 12px; }
  .case-card-meta { gap: 10px; font-size: 11px; padding-top: 12px; flex-wrap: wrap; }

  /* 联系 */
  .contact-grid { gap: 18px; padding: 0 16px; }
  .contact-card { padding: 26px 22px; }
  .contact-card h3 { font-size: 17px; letter-spacing: 2px; padding-bottom: 12px; margin-bottom: 16px; }
  .contact-list li { padding: 12px 0; font-size: 13px; gap: 10px; }
  .contact-list .label { width: 56px; font-size: 11px; letter-spacing: 2px; }
  .contact-form { gap: 12px; }
  .contact-form input, .contact-form textarea { padding: 11px 14px; font-size: 13px; }
  .contact-form button { padding: 13px 18px; font-size: 13px; letter-spacing: 2.5px; }

  /* CTA */
  .cta-block { padding: 0 16px 70px; }
  .cta-box { padding: 40px 22px; }
  .cta-title { font-size: 20px; letter-spacing: 3px; margin-bottom: 14px; }
  .cta-desc { font-size: 13px; line-height: 1.85; margin-bottom: 26px; }
  .cta-actions { gap: 10px; flex-direction: column; align-items: stretch; }
  .cta-btn { padding: 13px 22px; font-size: 12px; letter-spacing: 2.5px; }

  /* 内页 banner */
  .page-banner { padding: 108px 16px 50px; }
  .page-banner-label { font-size: 11px; letter-spacing: 4px; margin-bottom: 14px; }
  .page-banner-title { font-size: 24px; letter-spacing: 3px; margin-bottom: 14px; }
  .page-banner-desc { font-size: 13px; line-height: 1.85; }
  .page-banner-divider { margin-top: 26px; width: 32px; }

  /* 导航栏 */
  .nav { height: 52px; }
  .nav-inner { padding: 0 14px; }
  .nav-logo span { font-size: 13px; }
  .nav-links.open { top: 52px; }

  /* Footer */
  .footer { padding: 28px 16px 22px; }
  .footer p { font-size: 10px; line-height: 1.95; letter-spacing: 0.5px; }
}

/* ==== 触摸设备（无 hover 设备）：hover 视觉过渡收敛，避免误触 ==== */
@media (hover: none) {
  .stat-card:hover,
  .biz-card:hover,
  .honor-card:hover,
  .factory-card:hover,
  .biz-item:hover,
  .case-card:hover,
  .contact-card:hover {
    transform: none;
  }
  .biz-icon,
  .honor-icon {
    transition: none;
  }
  /* 触摸按下给一点轻微反馈 */
  .biz-card:active,
  .honor-card:active,
  .case-card:active,
  .stat-card:active {
    transform: scale(0.985);
    background: rgba(255, 255, 255, 0.05);
  }
  .contact-form button:active {
    transform: translateY(0);
  }
}

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