/* ============================================================================
   元精技术 CPT 官网模板 · 样式表  style.css
   ----------------------------------------------------------------------------
   颜色、字号、间距都集中在下面的 :root 变量里，改品牌色只需改这里。
============================================================================ */

:root {
  --ink: #070B18;
  --ink-2: #0C1424;
  --blue: #1B6BFF;
  --blue-2: #2E8BFF;
  --blue-deep: #1250D8;
  --mint: #12D6C0;
  --violet: #7C6BFF;
  --text: #1A2233;
  --muted: #5D6B80;
  --muted-2: #8A99AD;
  --line: #E4EAF3;
  --bg: #FFFFFF;
  --bg-soft: #F5F8FD;
  --radius: 16px;
  --shadow-s: 0 1px 2px rgba(12, 20, 36, .04), 0 10px 26px rgba(12, 20, 36, .05);
  --shadow-m: 0 18px 44px rgba(12, 20, 36, .11);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }
/* 禁止横向滚动：clip 不产生滚动容器，吸顶页头不受影响 */
html, body { overflow-x: clip; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
[id] { scroll-margin-top: 88px; }

.wrap { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ---------- 通用：图标 ---------- */
.ic { display: inline-flex; align-items: center; justify-content: center; }
.ic svg { width: 20px; height: 20px; }

/* ---------- 通用：按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 14.5px; font-weight: 600; line-height: 1;
  padding: 15px 26px; border-radius: 8px; border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue-2), var(--blue-deep));
  color: #fff; box-shadow: 0 12px 28px rgba(27, 107, 255, .30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(27, 107, 255, .40); }
.btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .26); background: rgba(255, 255, 255, .04); }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .45); }
.btn-line { color: var(--ink); border-color: var(--line); background: #fff; }
.btn-line:hover { border-color: rgba(27, 107, 255, .5); color: var(--blue); }
.btn-sm { padding: 10px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* ==========================================================================
   1. 顶部工具条
========================================================================== */
#topbar { background: var(--ink); color: rgba(255, 255, 255, .62); font-size: 12.5px; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.topbar-left { letter-spacing: .02em; }
.topbar-right a { display: inline-flex; align-items: center; gap: 7px; color: rgba(255, 255, 255, .82); }
.topbar-right a:hover { color: #fff; }
.topbar-right .ic svg { width: 14px; height: 14px; }

/* ==========================================================================
   2. 头部导航
========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 90;
  background: rgba(255, 255, 255, .86);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s ease, border-color .3s ease, background .3s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .95);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 26px rgba(12, 20, 36, .06);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }

.logo { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, #2E8BFF, #1250D8);
  color: #fff; font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: -.02em;
  box-shadow: 0 6px 16px rgba(27, 107, 255, .28);
}
.logo-img { height: 38px; width: auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 17px; font-weight: 700; letter-spacing: .04em; color: var(--ink); }
.logo-text em { font-style: normal; font-size: 9.5px; letter-spacing: .13em; text-transform: uppercase; color: var(--muted-2); margin-top: 2px; }

.nav { margin-left: auto; }
.nav > ul { display: flex; align-items: center; gap: 4px; }
.nav-item { position: static; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 14px; border-radius: 8px;
  font-size: 14.5px; font-weight: 500; color: var(--text);
  white-space: pre-line; line-height: 1.18; text-align: center;
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover { color: var(--blue); background: rgba(27, 107, 255, .06); }
.chev {
  width: 6px; height: 6px; border-right: 1.4px solid currentColor; border-bottom: 1.4px solid currentColor;
  transform: rotate(45deg) translateY(-1px); opacity: .55; transition: transform .25s ease;
}
.has-mega:hover .chev { transform: rotate(-135deg) translateY(-2px); }

/* Mega 下拉 */
.mega {
  position: absolute; top: 100%; left: 0; width: 100%;
  padding-top: 12px;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .28s ease, transform .28s ease, visibility .28s;
}
.has-mega:hover .mega, .has-mega:focus-within .mega { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-inner {
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr)) 260px; gap: 8px 32px;
  background: #fff; border: 1px solid var(--line); border-radius: 0 0 18px 18px;
  box-shadow: 0 30px 60px rgba(12, 20, 36, .12);
  padding: 30px 32px 34px;
  max-width: 1280px; margin: 0 auto;
}
.mega-col { display: flex; flex-direction: column; }
.mega-title { font-size: 11.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 12px; }
.mega-link { font-size: 14px; color: var(--text); padding: 7px 0; border-bottom: 1px solid transparent; transition: color .2s, padding-left .2s; }
.mega-link:hover { color: var(--blue); padding-left: 4px; }
.mega-promo {
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
  border-radius: 14px; padding: 24px;
  background: linear-gradient(150deg, #071022, #0C1B33 60%, #0A2440);
  color: #fff; position: relative; overflow: hidden;
}
.mega-promo::after {
  content: ''; position: absolute; width: 160px; height: 160px; right: -50px; bottom: -60px; border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 214, 192, .45), transparent 68%);
}
.mega-promo-tag {
  align-self: flex-start; font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  padding: 3px 8px; border-radius: 4px; background: rgba(18, 214, 192, .16); color: var(--mint);
}
.mega-promo strong { font-size: 16.5px; line-height: 1.4; }
.mega-promo span { font-size: 12.5px; color: rgba(255, 255, 255, .6); line-height: 1.6; }
.mega-promo em { font-style: normal; font-size: 12.5px; color: var(--mint); margin-top: 6px; }

.header-actions { display: flex; align-items: center; gap: 12px; margin-left: 8px; }
/* 语言切换 */
.lang-sw {
  display: inline-flex; align-items: center; gap: 4px; padding: 0 2px;
  font-size: 12.5px; font-weight: 600; line-height: 1; color: var(--muted);
}
.lang-sw a { color: inherit; text-decoration: none; padding: 4px 3px; border-radius: 4px; transition: color .2s; }
.lang-sw a:hover { color: var(--blue); }
.lang-sw a.on { color: var(--blue); }
.lang-sw span { color: var(--line); font-weight: 400; }
@media (max-width: 1180px) { .lang-sw { font-size: 12px; } }

.menu-toggle {
  display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 9px; background: #fff;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.menu-toggle i { display: block; width: 16px; height: 1.6px; background: var(--ink); border-radius: 2px; }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: 0 0 0 auto; width: min(84vw, 340px); z-index: 120;
  background: #fff; transform: translateX(102%); visibility: hidden;
  transition: transform .35s cubic-bezier(.4, 0, .2, 1), visibility 0s linear .35s;
  display: flex; flex-direction: column; box-shadow: -20px 0 60px rgba(12, 20, 36, .2);
}
.drawer.open { transform: translateX(0); visibility: visible; transition-delay: 0s; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.drawer-title { font-weight: 700; letter-spacing: .04em; }
.drawer-close { border: 0; background: transparent; font-size: 26px; line-height: 1; color: var(--muted); }
.drawer-body { padding: 8px 22px 30px; overflow-y: auto; }
.drawer-nav a { display: block; padding: 14px 0; font-size: 15.5px; font-weight: 500; border-bottom: 1px solid var(--line); }
.drawer-contact { margin-top: 26px; display: flex; flex-direction: column; gap: 12px; }
.drawer-contact a { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.drawer-contact .ic svg { width: 16px; height: 16px; color: var(--blue); }

/* ==========================================================================
   3. 首屏 Banner
========================================================================== */
.hero { position: relative; overflow: hidden; background: #05080F; color: #fff; }
.hero-bg { position: absolute; inset: 0; background:
  linear-gradient(90deg, rgba(4, 7, 14, .68) 0%, rgba(4, 7, 14, .34) 40%, rgba(4, 7, 14, .06) 68%, rgba(4, 7, 14, .18) 100%),
  linear-gradient(180deg, rgba(4, 7, 14, .30) 0%, rgba(4, 7, 14, 0) 30%, rgba(4, 7, 14, 0) 70%, rgba(4, 7, 14, .38) 100%),
  url('../img/hero-bg.jpg') center / cover no-repeat;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: radial-gradient(circle at 46% 34%, #000 18%, transparent 76%);
  mask-image: radial-gradient(circle at 46% 34%, #000 18%, transparent 76%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: minmax(0,1fr); gap: 0;
  align-items: center; padding: 84px 0 72px; min-height: 640px;
}
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.hero-badge {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em;
  padding: 5px 10px; border-radius: 4px;
  color: rgba(255, 255, 255, .72);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
}
.hero-slides { position: relative; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease, visibility .6s;
}
.hero-slide.active { position: relative; opacity: 1; visibility: visible; transform: none; }
.hero-kicker {
  flex-wrap: wrap;
  font-size: 13px; letter-spacing: .06em; color: var(--mint);
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px;
}
.hero-kicker::before { content: ''; width: 26px; height: 1.5px; background: var(--mint); }
.hero-title {
  font-size: clamp(36px, 4.4vw, 58px); line-height: 1.14; font-weight: 700;
  letter-spacing: -.02em; margin-bottom: 22px;
}
.hero-title span { display: block; }
.hero-title span:not(:first-child) {
  background: linear-gradient(92deg, #9CCBFF 0%, #6FA8FF 40%, #12D6C0 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-desc { max-width: 520px; font-size: 15.5px; line-height: 1.85; color: rgba(255, 255, 255, .66); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-foot { display: flex; align-items: center; gap: 26px; margin-top: 52px; }
.hero-dots { display: flex; align-items: center; gap: 10px; }
.dot {
  width: 26px; height: 3px; border-radius: 2px; border: 0; padding: 0;
  background: rgba(255, 255, 255, .22); transition: background .3s, width .3s;
}
.dot.active { width: 44px; background: linear-gradient(90deg, var(--blue-2), var(--mint)); }
.hero-count { font-family: var(--mono); font-size: 12px; color: rgba(255, 255, 255, .38); letter-spacing: .08em; }
.hero-count b { color: #fff; font-size: 15px; }

/* 右侧视觉 */
.hero-visual { position: relative; }
.hv-card {
  position: relative; border-radius: 20px; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .14);
  background: linear-gradient(160deg, rgba(255, 255, 255, .10), rgba(255, 255, 255, .02));
  box-shadow: 0 40px 90px rgba(0, 0, 0, .45);
  transform: perspective(1200px) rotateY(-7deg) rotateX(3deg);
  transition: transform .6s ease;
}
.hero-visual:hover .hv-card { transform: perspective(1200px) rotateY(-2deg) rotateX(1deg); }
.hv-img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; opacity: .97; }
.hv-cap {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .06em;
  color: rgba(255, 255, 255, .82); background: rgba(4, 8, 16, .7); border-top: 1px solid rgba(255, 255, 255, .1);
}
.hv-cap em { font-style: normal; color: var(--mint); }
.hv-chip {
  position: absolute; font-size: 12px; font-weight: 600; letter-spacing: .02em;
  padding: 9px 14px; border-radius: 999px;
  background: rgba(9, 16, 30, .82); color: #fff;
  border: 1px solid rgba(255, 255, 255, .18);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .35);
  animation: float 6s ease-in-out infinite;
}
.hv-chip.c1 { top: 8%; left: -6%; }
.hv-chip.c2 { bottom: 30%; right: -5%; animation-delay: -2s; }
.hv-chip.c3 { top: 58%; left: -7%; animation-delay: -4s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ==========================================================================
   4. 通用板块
========================================================================== */
.section { padding: 100px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: #060A14; color: #fff; }
.section-dark .sec-title { color: #fff; }
.section-dark .sec-desc { color: rgba(255, 255, 255, .60); }
.section-dark .eyebrow { color: #7FB6FF; }

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 56px; margin-bottom: 52px; }
.sec-head-center { justify-content: center; text-align: center; }
.sec-head-center .eyebrow { justify-content: center; }
.sec-head-center .eyebrow::before { display: none; }
.eyebrow {
  display: flex; align-items: center; gap: 10px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px;
}
.eyebrow::before { content: ''; width: 22px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--mint)); }
.sec-title { font-size: clamp(25px, 2.6vw, 38px); line-height: 1.28; font-weight: 700; letter-spacing: -.02em; color: var(--ink); }
.sec-desc { font-size: 14.5px; line-height: 1.85; color: var(--muted); max-width: 440px; }
.sec-side { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; max-width: 440px; }
.more-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--blue);
}
.more-link svg { width: 16px; height: 16px; transition: transform .25s ease; }
.more-link:hover svg { transform: translateX(4px); }

/* ==========================================================================
   5. 产品线四宫格
========================================================================== */
.line-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.line-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px 26px; overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.line-card::before {
  content: ''; position: absolute; top: -40px; right: -40px; width: 130px; height: 130px; border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 107, 255, .12), transparent 70%);
  opacity: 0; transition: opacity .4s ease;
}
.line-card:hover { transform: translateY(-6px); border-color: rgba(27, 107, 255, .32); box-shadow: var(--shadow-m); }
.line-card:hover::before { opacity: 1; }
.line-tag {
  position: absolute; top: 20px; right: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: .04em;
  color: var(--blue); background: rgba(27, 107, 255, .08);
  padding: 3px 9px; border-radius: 4px;
}
.line-ic { margin-bottom: 20px; }
.line-ic svg { width: 32px; height: 32px; color: var(--blue); }
.line-name { font-size: 17px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); }
.line-en { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); margin-top: 6px; }
.line-desc { font-size: 13.5px; line-height: 1.8; color: var(--muted); margin-top: 14px; flex: 1; }
.line-more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 20px;
  font-size: 13px; font-weight: 600; color: var(--ink); opacity: .55; transition: opacity .25s, color .25s;
}
.line-more svg { width: 15px; height: 15px; }
.line-card:hover .line-more { opacity: 1; color: var(--blue); }

/* ==========================================================================
   6. 精选产品
========================================================================== */
.prod-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.prod-card {
  background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); border-color: rgba(27, 107, 255, .3); }
.prod-media { aspect-ratio: 4 / 3; overflow: hidden; background: linear-gradient(160deg, #F7FAFF, #E9F1FB); }
.prod-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.prod-card:hover .prod-media img { transform: scale(1.045); }
.prod-body { padding: 26px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.prod-en { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue); }
.prod-name { font-size: 18px; font-weight: 700; color: var(--ink); margin-top: 8px; letter-spacing: -.01em; }
.prod-specs { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 4px; }
.spec {
  font-size: 11.5px; color: var(--muted); padding: 3px 9px;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 4px;
}
.prod-desc { font-size: 13.5px; line-height: 1.8; color: var(--muted); margin-top: 12px; flex: 1; }
.prod-link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px; font-weight: 600; color: var(--ink);
}
.prod-link svg { width: 15px; height: 15px; color: var(--blue); transition: transform .25s ease; }
.prod-card:hover .prod-link svg { transform: translateX(4px); }

/* ==========================================================================
   7. 工艺与品质（深色）
========================================================================== */
.proc-grid { display: grid; grid-template-columns: minmax(0,1.04fr) minmax(0,.96fr); gap: 64px; align-items: center; }
.proc-left { display: flex; flex-direction: column; }
.proc-item { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 26px 0; border-top: 1px solid var(--line); }
.section-dark .proc-item { border-top-color: rgba(255, 255, 255, .1); }
.proc-item:first-child { border-top: 0; padding-top: 0; }
.proc-no { font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .1em; color: var(--mint); padding-top: 4px; }
.proc-title { font-size: 19px; font-weight: 600; color: var(--ink); letter-spacing: -.01em; }
.section-dark .proc-title { color: #fff; }
.proc-desc { font-size: 14px; line-height: 1.85; color: var(--muted); margin-top: 10px; }
.section-dark .proc-desc { color: rgba(255, 255, 255, .58); }
.proc-visual { position: relative; }
.proc-frame {
  border-radius: 18px; overflow: hidden; border: 1px solid rgba(255, 255, 255, .14);
  background: #fff; box-shadow: 0 40px 80px rgba(0, 0, 0, .45);
}
.proc-frame img { width: 100%; }
.proc-stage { position: relative; margin: 10px 0 48px; }
.proc-grid--list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px 48px; align-items: start; }

/* ==========================================================================
   8. 关于我们 + 数据
========================================================================== */
.about-grid { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); gap: 72px; align-items: center; }
.about-p { font-size: 14.5px; line-height: 1.95; color: var(--muted); margin-top: 18px; }
.about-points { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 10px 24px; margin: 28px 0 34px; }
.about-points li { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text); }
.about-points i {
  width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue-2), var(--blue-deep));
  position: relative;
}
.about-points i::after {
  content: ''; position: absolute; left: 5px; top: 3.5px; width: 4px; height: 7px;
  border-right: 1.6px solid #fff; border-bottom: 1.6px solid #fff; transform: rotate(40deg);
}
.stat-panel {
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  box-shadow: var(--shadow-s);
}
.stat { background: #fff; padding: 32px 26px; transition: background .3s ease; }
.stat:hover { background: #FBFCFF; }
.stat-value { display: flex; align-items: baseline; gap: 3px; }
.stat-value b {
  font-size: clamp(30px, 3vw, 40px); font-weight: 700; letter-spacing: -.03em; line-height: 1;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-2) 55%, var(--mint));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-value em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--muted); }
.stat-label { font-size: 12.5px; color: var(--muted); margin-top: 10px; letter-spacing: .02em; }

/* ==========================================================================
   9. 行业解决方案
========================================================================== */
.ind-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.ind-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px 34px; min-height: 194px; overflow: hidden;
  transition: background .35s ease, border-color .35s ease, transform .35s ease;
}
.ind-ic svg { width: 28px; height: 28px; color: var(--blue); transition: color .35s ease; }
.ind-name { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-top: 20px; letter-spacing: -.01em; transition: color .35s ease; }
.ind-desc { font-size: 13.5px; line-height: 1.8; color: var(--muted); margin-top: 10px; max-width: 92%; transition: color .35s ease; }
.ind-arrow {
  position: absolute; right: 24px; bottom: 24px; width: 34px; height: 34px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); color: var(--muted-2);
  opacity: 0; transform: translateX(-6px);
  transition: opacity .35s ease, transform .35s ease, border-color .35s ease, color .35s ease;
}
.ind-arrow svg { width: 16px; height: 16px; }
.ind-card:hover { background: var(--ink); border-color: var(--ink); transform: translateY(-4px); }
.ind-card:hover .ind-ic svg { color: var(--mint); }
.ind-card:hover .ind-name { color: #fff; }
.ind-card:hover .ind-desc { color: rgba(255, 255, 255, .58); }
.ind-card:hover .ind-arrow { opacity: 1; transform: none; border-color: rgba(255, 255, 255, .3); color: #fff; }

/* ==========================================================================
   10. 客户条
========================================================================== */
.client-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; padding: 30px 0; }
.client-inner { display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
.client-label { display: flex; flex-direction: column; flex-shrink: 0; padding-right: 40px; border-right: 1px solid var(--line); }
.client-label span { font-size: 13.5px; font-weight: 700; color: var(--ink); letter-spacing: .04em; }
.client-label em { font-style: normal; font-size: 11px; color: var(--muted-2); margin-top: 3px; }
.client-logos { display: flex; align-items: center; gap: 46px; flex-wrap: wrap; }
.client-logo {
  font-size: 18px; font-weight: 700; letter-spacing: .06em; color: #A9B6C8;
  transition: color .3s ease;
}
.client-logo:hover { color: var(--ink); }

/* ==========================================================================
   11. 新闻中心
========================================================================== */
.tabs { display: flex; gap: 8px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.tab {
  position: relative; border: 0; background: transparent; padding: 12px 4px 16px; margin-right: 26px;
  font-size: 15px; font-weight: 600; color: var(--muted-2); transition: color .25s ease;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--ink); }
.tab::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--mint));
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.tab.active::after { transform: scaleX(1); }
.news-panel { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.news-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  animation: fadeUp .5s both;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); border-color: rgba(27, 107, 255, .28); }
.news-thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.news-date { font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; color: var(--muted-2); }
.news-title {
  font-size: 16px; font-weight: 600; line-height: 1.55; color: var(--ink); margin-top: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  transition: color .25s ease;
}
.news-card:hover .news-title { color: var(--blue); }
.news-desc {
  font-size: 13px; line-height: 1.8; color: var(--muted); margin-top: 10px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 12.5px; font-weight: 600; color: var(--blue); }
.news-more svg { width: 14px; height: 14px; transition: transform .25s ease; }
.news-card:hover .news-more svg { transform: translateX(4px); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   12. 服务承诺
========================================================================== */
.svc-grid {
  display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
}
.svc { background: #fff; padding: 34px 26px; transition: background .3s ease; }
.svc:hover { background: #FBFCFF; }
.svc-ic svg { width: 26px; height: 26px; color: var(--blue); }
.svc-name { font-size: 15px; font-weight: 700; color: var(--ink); margin-top: 18px; }
.svc-desc { font-size: 12.5px; line-height: 1.8; color: var(--muted); margin-top: 8px; }

/* ==========================================================================
   13. 联系与询价
========================================================================== */
.section-contact {
  background:
    radial-gradient(700px 420px at 88% 6%, rgba(27, 107, 255, .22), transparent 62%),
    linear-gradient(180deg, #060A14, #080E1B);
  color: #fff;
}
.section-contact .sec-title { color: #fff; }
.section-contact .sec-desc { color: rgba(255, 255, 255, .58); }
.section-contact .eyebrow { color: #7FB6FF; }
.contact-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 72px; align-items: start; }
.info-list { margin-top: 36px; }
.info-list li { display: flex; gap: 16px; padding: 18px 0; border-top: 1px solid rgba(255, 255, 255, .1); }
.info-list .ic svg { width: 18px; height: 18px; color: var(--mint); margin-top: 3px; }
.info-list b { display: block; font-size: 14.5px; font-weight: 600; color: #fff; line-height: 1.6; }
.info-list b a:hover { color: var(--mint); }
.info-list span { display: block; font-size: 12px; color: rgba(255, 255, 255, .40); margin-top: 3px; letter-spacing: .02em; }

.form-card { background: #fff; border-radius: 20px; padding: 36px; box-shadow: 0 30px 70px rgba(0, 0, 0, .35); }
.form-title { font-size: 20px; font-weight: 700; color: var(--ink); letter-spacing: -.01em; }
.form-desc { font-size: 12.5px; color: var(--muted-2); margin-top: 8px; }
.form { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 16px; margin-top: 24px; }
.field { display: flex; flex-direction: column; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 12.5px; font-weight: 600; color: var(--muted); margin-bottom: 7px; }
.field input, .field textarea {
  font-family: inherit; font-size: 14px; color: var(--text);
  background: #F8FAFD; border: 1px solid var(--line); border-radius: 9px;
  padding: 12px 14px; outline: none; width: 100%;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.field textarea { resize: vertical; line-height: 1.7; }
.field input:focus, .field textarea:focus {
  border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px rgba(27, 107, 255, .12);
}
.form .btn { margin-top: 4px; }
.form-tip { grid-column: 1 / -1; font-size: 11.5px; color: var(--muted-2); text-align: center; margin: 0; }

/* ==========================================================================
   14. 页脚
========================================================================== */
.site-footer { background: #05080F; color: rgba(255, 255, 255, .6); padding-top: 72px; }
.foot-grid { display: grid; grid-template-columns: minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr); gap: 48px; }
.logo-light .logo-text strong { color: #fff; }
.logo-light .logo-text em { color: rgba(255, 255, 255, .35); }
.foot-desc { font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, .46); margin-top: 22px; max-width: 380px; }
.foot-contact { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }
.foot-contact a, .foot-contact span { display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; color: rgba(255, 255, 255, .72); }
.foot-contact a:hover { color: #fff; }
.foot-contact .ic svg { width: 15px; height: 15px; color: var(--mint); }
.foot-col h4 { font-size: 13.5px; font-weight: 700; color: #fff; letter-spacing: .06em; margin-bottom: 16px; }
.foot-link { display: block; font-size: 13.5px; color: rgba(255, 255, 255, .52); padding: 6px 0; transition: color .25s ease, transform .25s ease; }
.foot-link:hover { color: #fff; transform: translateX(3px); }
.foot-bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  margin-top: 56px; padding: 22px 32px 30px; border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 12px; color: rgba(255, 255, 255, .36);
}
.foot-bottom a:hover { color: rgba(255, 255, 255, .7); }

/* ==========================================================================
   15. 动效 / 回到顶部
========================================================================== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .3, 1); }
.reveal.in { opacity: 1; transform: none; }

/* 预览模式（可视化编辑器内嵌 iframe）：直接呈现最终状态，不做入场动画 */
html.is-preview .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
html.is-preview { scroll-behavior: auto; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hv-chip { animation: none; }
  html { scroll-behavior: auto; }
}
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 80;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line);
  background: #fff; color: var(--ink); display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(12, 20, 36, .14);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 18px; height: 18px; }

/* ==========================================================================
   16. 响应式
========================================================================== */
@media (max-width: 1180px) {
  .wrap { padding: 0 24px; }
  .nav-link { padding: 10px 10px; font-size: 14px; }
  .hero-inner { gap: 36px; }
  .mega-inner { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .mega-promo { display: none; }
}

@media (max-width: 1024px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .section { padding: 78px 0; }
  .hero-inner { grid-template-columns: minmax(0,1fr); padding: 60px 0 64px; min-height: 0; }
  .hero-visual { max-width: 560px; }
  .hv-chip.c1 { left: 2%; }
  .hv-chip.c2 { right: 0; }
  .line-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .prod-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .prod-grid > .prod-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .proc-grid { grid-template-columns: minmax(0,1fr); gap: 48px; }
  .about-grid { grid-template-columns: minmax(0,1fr); gap: 44px; }
  .ind-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .svc-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .news-panel { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .contact-grid { grid-template-columns: minmax(0,1fr); gap: 40px; }
  .foot-grid { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 18px; }
  .sec-desc { max-width: none; }
}

@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .topbar-inner { height: auto; padding: 7px 0; flex-direction: row; justify-content: center; gap: 14px; text-align: center; }
  .topbar-left { display: none; }
  .topbar-right { font-size: 12px; }
  .header-inner { height: 60px; gap: 14px; }
  .header-actions { gap: 8px; margin-left: 0; }
  .header-actions .btn { display: none; }
  .logo-text strong { font-size: 16px; }
  .logo-text em { display: none; }
  .section { padding: 62px 0; }
  .hero-title { font-size: 32px; }
  .hero-bg { background:
    linear-gradient(90deg, rgba(4, 7, 14, .62), rgba(4, 7, 14, .62)),
    url('../img/hero-bg.jpg') center / cover no-repeat;
  }
  .hero-desc { font-size: 14.5px; }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { flex: 1; padding: 14px 16px; }
  .hv-card { transform: none; }
  .hv-chip.c3 { display: none; }
  .hero-foot { margin-top: 34px; }
  .line-grid, .prod-grid, .ind-grid, .news-panel, .svc-grid { grid-template-columns: minmax(0,1fr); }
  .svc-grid { border-radius: 14px; }
  .stat-panel { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
  .about-points { grid-template-columns: minmax(0,1fr); }
  .form { grid-template-columns: minmax(0,1fr); }
  .form-card { padding: 26px 22px; }
  .foot-grid { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; gap: 8px; padding: 20px 20px 26px; }
  .client-inner { flex-direction: column; align-items: flex-start; gap: 18px; }
  .client-label { border-right: 0; padding-right: 0; }
  .client-logos { gap: 26px; }
  .client-logo { font-size: 15px; }
  .proc-item { grid-template-columns: 40px 1fr; gap: 14px; }
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

/* 防止栅格被子内容撑开 */
.hero-inner > *, .proc-grid > *, .about-grid > *, .contact-grid > *, .foot-grid > * { min-width: 0; }

/* ============================================================================
   3.5 应用场景与技术前沿（首页文章栏目）
============================================================================ */
.ins-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 22px; }
.ins-tab {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px;
  border: 1px solid var(--line); background: #fff; border-radius: 99px;
  font: inherit; font-size: 14px; font-weight: 600; color: var(--muted);
  cursor: pointer; transition: .22s;
}
.ins-tab em {
  font-style: normal; font-size: 12px; font-weight: 700; color: var(--muted-2);
  background: var(--bg-soft); border-radius: 99px; padding: 1px 8px;
}
.ins-tab:hover { color: var(--blue); border-color: #C8DBFF; }
.ins-tab.is-on {
  background: var(--blue); border-color: var(--blue); color: #fff;
  box-shadow: 0 8px 20px rgba(27, 107, 255, .24);
}
.ins-tab.is-on em { background: rgba(255, 255, 255, .22); color: #fff; }

.ins-body {
  display: grid; grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
  gap: 26px; align-items: start;
}
.ins-lead {
  display: block; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit;
  box-shadow: var(--shadow-s); transition: .3s;
}
.ins-lead:hover { transform: translateY(-4px); box-shadow: var(--shadow-m); border-color: #CFE0FF; }
.ins-lead-media { position: relative; aspect-ratio: 16 / 9; background: var(--bg-soft); overflow: hidden; }
.ins-lead-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: .5s; }
.ins-lead:hover .ins-lead-media img { transform: scale(1.04); }
.ins-tag {
  position: absolute; left: 14px; top: 14px; z-index: 2;
  background: rgba(7, 11, 24, .74); color: #fff; backdrop-filter: blur(6px);
  font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 99px;
}
.ins-lead-body { padding: 22px 24px 24px; }
.ins-meta { margin: 0 0 8px; font-size: 12.5px; color: var(--muted-2); letter-spacing: .02em; }
.ins-lead-title {
  margin: 0 0 10px; font-size: 21px; line-height: 1.45; font-weight: 700; color: var(--text);
  transition: .2s;
}
.ins-lead:hover .ins-lead-title { color: var(--blue); }
.ins-sum { margin: 0 0 16px; font-size: 14.5px; line-height: 1.78; color: var(--muted); }
.ins-more {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 600; color: var(--blue);
}
.ins-more svg { width: 17px; height: 17px; flex: none; transition: .2s; }
.ins-more .ic { width: 17px; height: 17px; transition: .2s; }
.ins-lead:hover .ins-more svg { transform: translateX(4px); }

.ins-list { display: grid; gap: 12px; }
.ins-item {
  position: relative; display: block; padding: 16px 46px 16px 18px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  text-decoration: none; color: inherit; transition: .26s;
}
.ins-item:hover { border-color: #CFE0FF; background: #FBFCFF; transform: translateX(3px); }
.ins-item-top { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.ins-item-tag {
  font-size: 11.5px; font-weight: 600; color: var(--blue-deep);
  background: #EAF2FF; padding: 3px 9px; border-radius: 6px;
}
.ins-item-date { font-size: 12px; color: var(--muted-2); }
.ins-item-title {
  margin: 0 0 5px; font-size: 15.5px; font-weight: 700; line-height: 1.5; color: var(--text);
}
.ins-item:hover .ins-item-title { color: var(--blue); }
.ins-item-sum {
  margin: 0; font-size: 13px; line-height: 1.7; color: var(--muted);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ins-item-more {
  position: absolute; right: 16px; top: 50%; margin-top: -9px;
  width: 18px; height: 18px; color: var(--muted-2); transition: .2s;
}
.ins-item:hover .ins-item-more { color: var(--blue); transform: translateX(3px); }
.ins-item-more svg, .ins-item-more .ic { width: 18px; height: 18px; flex: none; }

@media (max-width: 1024px) {
  .ins-body { grid-template-columns: minmax(0, 1fr); }
  .ins-lead-media { aspect-ratio: 16 / 7.4; }
}
@media (max-width: 640px) {
  .ins-tabs { gap: 8px; margin: 20px 0 16px; }
  .ins-tab { padding: 7px 14px; font-size: 13px; }
  .ins-lead-media { aspect-ratio: 16 / 9; }
  .ins-lead-body { padding: 18px 18px 20px; }
  .ins-lead-title { font-size: 18px; }
  .ins-item { padding: 14px 40px 14px 14px; }
}

/* ---------- 法律/合规/隐私页 ---------- */
.legal-wrap { max-width: 860px; margin: 0 auto; padding: 56px 0 72px; }
.legal-h1 { font-size: 30px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.legal-h1 .legal-en { display: block; font-size: 15px; font-weight: 500; color: var(--muted, #67788e); margin-top: 6px; }
.legal-meta { font-size: 13px; color: var(--muted, #67788e); border-bottom: 1px solid var(--line, #e3e8f0); padding-bottom: 18px; margin-bottom: 26px; }
.legal-wrap h2 { font-size: 19px; font-weight: 700; color: var(--text); margin: 30px 0 10px; }
.legal-wrap h2 .legal-en { display: block; font-size: 12.5px; font-weight: 500; color: var(--muted, #67788e); margin-top: 3px; }
.legal-wrap p { font-size: 14.5px; line-height: 1.95; color: #3c4a5c; margin: 8px 0; }
.legal-wrap a { color: var(--blue, #1b6bff); }
.legal-dl { margin: 12px 0 4px; }
.legal-note { margin-top: 34px; padding: 14px 16px; background: #f5f8fc; border-radius: 10px; font-size: 13px !important; }
@media (max-width: 720px) { .legal-wrap { padding: 36px 0 48px; } .legal-h1 { font-size: 24px; } }