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

:root {
  --accent: #00e5ff;
  --accent-dim: rgba(0,229,255,.12);
  --accent-border: rgba(0,229,255,.25);
  --bg: #080808;
  --bg2: #0d0d0d;
  --bg3: #111;
  --white: #ffffff;
  --gray1: rgba(255,255,255,.06);
  --gray2: rgba(255,255,255,.12);
  --gray3: rgba(255,255,255,.35);
  --gray4: rgba(255,255,255,.55);
  --text: rgba(255,255,255,.85);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  line-height: 1.6;
  cursor: none;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { cursor: none; border: none; background: none; }

/* ── 自定义光标 ── */
.cursor {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  transition: opacity .3s;
}
.cursor-ring {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  transition: width .25s ease, height .25s ease, background .25s ease;
}
.cursor.hovering .cursor-ring { width: 110px; height: 110px; background: #ffffff; }
.cursor.clicking .cursor-ring { width: 70px; height: 70px; }
.cursor.hidden { opacity: 0; }

/* ── 网格背景 ── */
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0,229,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.025) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* ── 聚光灯 ── */
.spotlight {
  position: fixed;
  pointer-events: none;
  z-index: 1;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,.06) 0%, transparent 65%);
  will-change: transform;
  transform: translate(-9999px, -9999px);
}

/* ── 导航 ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 56px;
  height: 68px;
  background: rgba(8,8,8,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray1);
  transition: background .3s;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo-mark {
  width: 36px; height: 36px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #000; letter-spacing: -.5px;
}
.nav-logo-text { font-size: 13px; font-weight: 500; letter-spacing: 2.5px; color: #fff; }
.nav-logo-cn { font-size: 9px; color: var(--gray3); letter-spacing: 1.5px; margin-top: 2px; }
.nav-links { display: flex; gap: 36px; }
.nav-link {
  font-size: 11px; letter-spacing: 1.5px; color: var(--gray3);
  text-transform: uppercase; transition: color .2s; position: relative; padding-bottom: 2px;
}
.nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--accent);
  transition: width .25s ease;
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: #fff; }
.nav-link.active::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 10px; }
.lang-btn {
  font-size: 10px; color: var(--gray3); border: 1px solid var(--gray2);
  padding: 4px 12px; letter-spacing: 1px; transition: all .2s;
}
.lang-btn.active, .lang-btn:hover { color: var(--accent); border-color: var(--accent-border); }
.nav-inquiry {
  font-size: 10px; background: var(--accent); color: #000;
  padding: 8px 20px; letter-spacing: 1.5px; font-weight: 700; text-transform: uppercase;
  transition: transform .15s, box-shadow .15s;
}
.nav-inquiry:hover { transform: scale(1.04); box-shadow: 0 0 20px rgba(0,229,255,.3); }

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 68px 56px 0;
  position: relative;
  z-index: 2;
}
.hero-left { padding-right: 48px; padding-top: 40px; }
.section-tag {
  display: flex; align-items: center; gap: 10px;
  font-size: 9px; letter-spacing: 3px; color: var(--accent);
  text-transform: uppercase; margin-bottom: 20px;
}
.section-tag-line { width: 20px; height: 1px; background: var(--accent); }
.hero-h1 {
  font-size: 68px; font-weight: 700; line-height: 1.0;
  letter-spacing: -2px; color: #fff; margin-bottom: 10px;
  transition: transform .15s ease-out;
}
.hero-h1 em { color: var(--accent); font-style: normal; }
.hero-h1-en {
  font-size: 10px; letter-spacing: 3px;
  color: rgba(255,255,255,.2); text-transform: uppercase; margin-bottom: 28px;
}
.hero-desc { font-size: 14px; color: var(--gray3); line-height: 2; margin-bottom: 36px; }
.hero-btns { display: flex; gap: 14px; }
.btn-primary {
  background: var(--accent); color: #000;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  padding: 13px 28px; text-transform: uppercase;
  transition: transform .15s, box-shadow .15s;
  display: inline-block;
}
.btn-primary:hover { transform: scale(1.04); box-shadow: 0 0 24px rgba(0,229,255,.35); }
.btn-ghost {
  border: 1px solid var(--gray2); color: var(--gray4);
  font-size: 11px; letter-spacing: 2px;
  padding: 13px 28px; text-transform: uppercase;
  transition: all .2s; display: inline-block;
}
.btn-ghost:hover { border-color: var(--accent-border); color: var(--accent); }
.hero-stats {
  display: flex; gap: 36px;
  margin-top: 44px; padding-top: 36px;
  border-top: 1px solid var(--gray1);
}
.stat-num { font-size: 28px; font-weight: 700; color: #fff; letter-spacing: -1px; }
.stat-num em { color: var(--accent); font-size: 18px; font-style: normal; }
.stat-lbl { font-size: 9px; color: var(--gray3); letter-spacing: 1.5px; text-transform: uppercase; margin-top: 4px; }

.hero-right { padding: 100px 0 40px; display: flex; flex-direction: column; gap: 16px; }

/* ── 3D 产品卡片 ── */
.card-3d {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  padding: 24px;
  position: relative;
  transform-style: preserve-3d;
  transition: border-color .25s, box-shadow .25s;
  transform: perspective(800px) rotateX(0deg) rotateY(0deg);
}
.card-3d:hover { border-color: var(--accent-border); box-shadow: 0 0 40px rgba(0,229,255,.07); }
.card-3d.featured { border-color: rgba(0,229,255,.18); background: rgba(0,229,255,.03); }
.card-corner {
  position: absolute; width: 12px; height: 12px; pointer-events: none;
  border-color: var(--accent);
}
.card-corner.tl { top: 0; left: 0; border-top: 1px solid; border-left: 1px solid; }
.card-corner.br { bottom: 0; right: 0; border-bottom: 1px solid; border-right: 1px solid; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-badge {
  font-size: 9px; letter-spacing: 2px; color: var(--accent);
  border: 1px solid var(--accent-border); padding: 3px 10px; text-transform: uppercase;
}
.card-sample { font-size: 9px; color: var(--gray3); letter-spacing: 1px; }
.card-body { display: flex; align-items: center; gap: 20px; }
.card-icon {
  width: 80px; height: 80px; flex-shrink: 0;
  background: rgba(0,229,255,.06); border: 1px solid rgba(0,229,255,.12);
  display: flex; align-items: center; justify-content: center;
  transform: translateZ(20px);
}
.card-title { font-size: 14px; font-weight: 500; color: #fff; margin-bottom: 3px; }
.card-title-en { font-size: 10px; color: var(--gray3); letter-spacing: 1px; margin-bottom: 12px; }
.card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.card-tag {
  font-size: 9px; color: rgba(0,229,255,.7);
  border: 1px solid rgba(0,229,255,.2); padding: 2px 8px; letter-spacing: .5px;
}

/* 产品图标 SVG */
.icon-switch-sq, .icon-switch-oval, .icon-switch-round, .icon-switch-rect {
  display: flex; align-items: center; justify-content: center;
  border: 2px solid rgba(0,229,255,.5); background: #0a0a0a;
}
.icon-switch-sq { width: 44px; height: 44px; border-radius: 8px; }
.icon-switch-oval { width: 60px; height: 34px; border-radius: 17px; gap: 10px; }
.icon-switch-round { width: 44px; height: 44px; border-radius: 50%; }
.icon-switch-rect { width: 56px; height: 36px; border-radius: 6px; flex-direction: column; gap: 4px; }
.pw-icon {
  width: 18px; height: 18px; border: 2px solid var(--accent); border-radius: 50%; position: relative;
}
.pw-icon::after {
  content: ''; position: absolute; top: -5px; left: 50%; transform: translateX(-50%);
  width: 2px; height: 7px; background: var(--accent);
}
.dot-icon { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid rgba(0,229,255,.7); }
.bar-icon { display: flex; flex-direction: column; gap: 3px; }
.bar-icon span { display: block; height: 2px; background: rgba(0,229,255,.7); border-radius: 1px; }

/* ── 章节通用 ── */
.section { padding: 96px 56px; position: relative; z-index: 2; }
.section-header { margin-bottom: 56px; }
.section-title {
  font-size: 42px; font-weight: 700; color: #fff;
  letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 6px;
}
.section-title em { color: var(--accent); font-style: normal; }
.section-title-en {
  font-size: 10px; color: rgba(255,255,255,.2);
  letter-spacing: 2.5px; text-transform: uppercase; margin-top: 6px;
}

/* ── 产品网格 ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.05);
}
.prod-card {
  background: var(--bg2); padding: 28px;
  transition: background .2s; cursor: none;
}
.prod-card:hover { background: #141414; }
.prod-img-wrap {
  width: 100%; aspect-ratio: 1;
  background: rgba(0,229,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; position: relative; overflow: hidden;
}
.prod-img-wrap img { width: 80%; height: 80%; object-fit: contain; }
.prod-img-placeholder {
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at center, rgba(0,229,255,.07) 0%, transparent 70%);
  display: flex; align-items: center; justify-content: center;
}
.prod-name { font-size: 14px; font-weight: 500; color: #fff; margin-bottom: 4px; }
.prod-name-en { font-size: 10px; color: var(--gray3); letter-spacing: 1px; margin-bottom: 14px; }
.prod-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.prod-tag {
  font-size: 9px; color: rgba(0,229,255,.65);
  border: 1px solid rgba(0,229,255,.18); padding: 2px 8px;
}

/* ── 优势区 ── */
.features-wrap {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}
.feat-title { font-size: 40px; font-weight: 700; color: #fff; letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 8px; }
.feat-title em { color: var(--accent); font-style: normal; }
.feat-title-en { font-size: 10px; color: rgba(255,255,255,.2); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 24px; }
.feat-desc { font-size: 13px; color: var(--gray3); line-height: 2; margin-bottom: 36px; }
.feat-list { display: flex; flex-direction: column; gap: 20px; }
.feat-item { display: flex; align-items: flex-start; gap: 16px; }
.feat-dot {
  width: 34px; height: 34px; flex-shrink: 0;
  border: 1px solid var(--accent-border); background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center; margin-top: 3px;
}
.feat-dot-inner { width: 8px; height: 8px; background: var(--accent); }
.feat-item h4 { font-size: 13px; font-weight: 500; color: #fff; margin-bottom: 4px; }
.feat-item p { font-size: 12px; color: var(--gray3); line-height: 1.8; }
.feat-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.feat-card {
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.07);
  padding: 24px;
}
.feat-card.accent { border-color: var(--accent-border); background: var(--accent-dim); }
.feat-card-num { font-size: 32px; font-weight: 700; color: var(--accent); letter-spacing: -1.5px; }
.feat-card-label { font-size: 9px; color: rgba(255,255,255,.3); letter-spacing: 2px; text-transform: uppercase; margin-top: 6px; }
.feat-card-sub { font-size: 11px; color: rgba(255,255,255,.2); margin-top: 3px; }

/* ── CTA 条 ── */
.cta-bar {
  background: var(--accent);
  padding: 36px 56px;
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 2;
}
.cta-bar h3 { font-size: 22px; font-weight: 700; color: #000; letter-spacing: -.5px; }
.cta-bar p { font-size: 11px; color: rgba(0,0,0,.5); letter-spacing: 1.5px; text-transform: uppercase; margin-top: 4px; }
.cta-bar-btn {
  background: #000; color: var(--accent);
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  padding: 13px 28px; text-transform: uppercase;
  transition: transform .15s;
}
.cta-bar-btn:hover { transform: scale(1.04); }

/* ── 联系页 ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h3 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 24px; letter-spacing: -1px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-info-icon { width: 36px; height: 36px; border: 1px solid var(--accent-border); background: var(--accent-dim); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-text h4 { font-size: 11px; color: var(--gray3); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 4px; }
.contact-info-text p { font-size: 14px; color: #fff; }
.inquiry-form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 10px; color: var(--gray3); letter-spacing: 1.5px; text-transform: uppercase; }
.form-input, .form-textarea, .form-select {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1);
  color: #fff; padding: 12px 16px; font-size: 13px;
  font-family: inherit; outline: none; transition: border-color .2s;
  width: 100%;
}
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--accent-border); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--gray3); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-select option { background: #1a1a1a; }
.form-submit {
  background: var(--accent); color: #000;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  padding: 14px 28px; text-transform: uppercase;
  transition: transform .15s, box-shadow .15s; border: none; align-self: flex-start;
}
.form-submit:hover { transform: scale(1.04); box-shadow: 0 0 24px rgba(0,229,255,.35); }

/* ── 新闻卡片 ── */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.05); }
.news-card { background: var(--bg2); padding: 28px; transition: background .2s; cursor: none; }
.news-card:hover { background: #141414; }
.news-date { font-size: 10px; color: var(--gray3); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 12px; }
.news-title { font-size: 15px; font-weight: 500; color: #fff; line-height: 1.4; margin-bottom: 10px; }
.news-summary { font-size: 12px; color: var(--gray3); line-height: 1.8; }
.news-more { font-size: 10px; color: var(--accent); letter-spacing: 1.5px; text-transform: uppercase; margin-top: 16px; border-bottom: 1px solid var(--accent-border); padding-bottom: 2px; display: inline-block; }

/* ── 页脚 ── */
.footer { background: #050505; padding: 64px 56px 32px; position: relative; z-index: 2; border-top: 1px solid var(--gray1); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand-name { font-size: 14px; font-weight: 500; letter-spacing: 2.5px; color: #fff; margin-bottom: 4px; }
.footer-brand-en { font-size: 9px; color: var(--gray3); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.footer-desc { font-size: 12px; color: rgba(255,255,255,.25); line-height: 1.9; max-width: 240px; }
.footer-col-title { font-size: 9px; letter-spacing: 2px; color: rgba(255,255,255,.3); text-transform: uppercase; margin-bottom: 18px; padding-bottom: 10px; border-bottom: 1px solid var(--gray1); }
.footer-link { font-size: 12px; color: rgba(255,255,255,.3); margin-bottom: 10px; display: block; transition: color .2s; }
.footer-link:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; border-top: 1px solid var(--gray1); }
.footer-copy { font-size: 11px; color: rgba(255,255,255,.18); }
.footer-icp { font-size: 11px; color: rgba(255,255,255,.12); }

/* ── 后台 ── */
.admin-layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; cursor: default; }
.admin-aside { background: #0a0a0a; border-right: 1px solid rgba(255,255,255,.07); padding: 0; }
.aside-brand { padding: 24px 20px; border-bottom: 1px solid rgba(255,255,255,.06); }
.aside-brand-name { font-size: 13px; font-weight: 500; letter-spacing: 1.5px; color: #fff; }
.aside-brand-sub { font-size: 9px; color: rgba(255,255,255,.3); letter-spacing: 1px; margin-top: 2px; }
.aside-nav { padding: 12px 0; }
.aside-item { display: flex; align-items: center; gap: 10px; padding: 12px 20px; font-size: 12px; color: rgba(255,255,255,.4); letter-spacing: 1px; cursor: pointer; transition: all .2s; text-decoration: none; }
.aside-item:hover, .aside-item.active { color: var(--accent); background: rgba(0,229,255,.05); border-left: 2px solid var(--accent); }
.admin-main { background: #0d0d0d; }
.admin-header { background: #0a0a0a; border-bottom: 1px solid rgba(255,255,255,.07); padding: 0 32px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.admin-page-title { font-size: 15px; font-weight: 500; color: #fff; }
.admin-content { padding: 32px; }
.admin-card { background: #0a0a0a; border: 1px solid rgba(255,255,255,.07); padding: 24px; margin-bottom: 24px; }
.admin-card-title { font-size: 13px; font-weight: 500; color: #fff; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,.06); }
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #0a0a0a; border: 1px solid rgba(255,255,255,.07); padding: 20px; }
.stat-card-num { font-size: 28px; font-weight: 700; color: var(--accent); letter-spacing: -1px; }
.stat-card-label { font-size: 10px; color: rgba(255,255,255,.3); letter-spacing: 1.5px; text-transform: uppercase; margin-top: 6px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.admin-table th { text-align: left; padding: 10px 14px; color: rgba(255,255,255,.3); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; border-bottom: 1px solid rgba(255,255,255,.06); font-weight: 400; }
.admin-table td { padding: 12px 14px; color: rgba(255,255,255,.65); border-bottom: 1px solid rgba(255,255,255,.04); }
.admin-table tr:hover td { background: rgba(255,255,255,.02); }
.badge { font-size: 10px; padding: 2px 8px; border-radius: 2px; }
.badge-new { background: rgba(0,229,255,.1); color: var(--accent); border: 1px solid rgba(0,229,255,.2); }
.badge-done { background: rgba(100,200,100,.1); color: #64c864; border: 1px solid rgba(100,200,100,.2); }
.btn-sm { font-size: 10px; padding: 5px 12px; letter-spacing: 1px; cursor: pointer; transition: all .2s; }
.btn-sm-primary { background: var(--accent); color: #000; font-weight: 700; }
.btn-sm-ghost { border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.5); background: none; }
.btn-sm-danger { border: 1px solid rgba(255,80,80,.3); color: rgba(255,80,80,.7); background: none; }
.admin-input { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); color: #fff; padding: 9px 14px; font-size: 12px; outline: none; width: 100%; transition: border-color .2s; }
.admin-input:focus { border-color: var(--accent-border); }
.admin-login { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #080808; cursor: default; }
.login-box { width: 380px; border: 1px solid rgba(255,255,255,.1); padding: 40px; }
.login-box h2 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 8px; letter-spacing: -0.5px; }
.login-box p { font-size: 12px; color: rgba(255,255,255,.3); margin-bottom: 32px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }

/* ── 分页 ── */
.pagination { display: flex; gap: 6px; margin-top: 24px; }
.page-btn { font-size: 11px; padding: 6px 12px; border: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.4); cursor: pointer; transition: all .2s; background: none; }
.page-btn.active, .page-btn:hover { border-color: var(--accent-border); color: var(--accent); background: var(--accent-dim); }

/* ── 响应式 ── */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding: 100px 28px 40px; }
  .hero-left { padding-right: 0; }
  .hero-right { display: none; }
  .hero-h1 { font-size: 48px; }
  .nav { padding: 0 28px; }
  .nav-links { display: none; }
  .section { padding: 64px 28px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .features-wrap { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .stat-cards { grid-template-columns: 1fr 1fr; }
  body { cursor: auto; }
  .cursor, .spotlight { display: none; }
}