/* ═══════════════════════════════════════════════
   昆山睿恩新机电 — 官网样式
   深空工业底色 × REENTION 蓝点睛
   ═══════════════════════════════════════════════ */

:root {
  --bg: #0a0b0f;
  --bg-2: #0e1016;
  --card: #12141c;
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);
  --text: #efede8;
  --muted: #8f95a0;
  --faint: #5c6169;
  --accent: #2f8fe6;
  --accent-2: #1560b8;
  --accent-grad: linear-gradient(120deg, #6cc0ff, #2f8fe6 45%, #1560b8);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, "Helvetica Neue", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, monospace;
  --container: 1280px;
  --pad: clamp(20px, 4vw, 48px);
  --header-h: 76px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ═══════════ 全局环境背景层 ═══════════ */
/* 工程网格 tile：96px 细网格 + 384px 处定位十字，SVG 平铺 */
:root {
  --grid-img: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='384' height='384'%3E%3Cpath d='M96 0v384M192 0v384M288 0v384M0 96h384M0 192h384M0 288h384' stroke='%23ffffff' stroke-opacity='0.035' stroke-width='1'/%3E%3Cpath d='M0 0v384M0 0h384' stroke='%23ffffff' stroke-opacity='0.06' stroke-width='1'/%3E%3Cpath d='M192 182v20M182 192h20' stroke='%23ffffff' stroke-opacity='0.1' stroke-width='1'/%3E%3C/svg%3E");
}
.ambient { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
/* transform 留给漂移动画；滚动视差走独立 translate 属性，两者互不覆盖 */
.amb-glow { position: absolute; border-radius: 50%; will-change: transform, translate; translate: 0 var(--scroll-shift, 0px); }
.amb-a {
  width: min(70vw, 980px); height: min(70vw, 980px);
  left: -18%; top: -22%;
  background: radial-gradient(circle, rgba(47, 143, 230, 0.075), transparent 62%);
  animation: ambDriftA 52s ease-in-out infinite alternate;
}
.amb-b {
  width: min(66vw, 900px); height: min(66vw, 900px);
  right: -22%; top: 30%;
  background: radial-gradient(circle, rgba(232, 178, 58, 0.05), transparent 64%);
  animation: ambDriftB 64s ease-in-out infinite alternate;
}
.amb-c {
  width: min(60vw, 820px); height: min(60vw, 820px);
  left: 8%; bottom: -30%;
  background: radial-gradient(circle, rgba(21, 96, 184, 0.05), transparent 60%);
  animation: ambDriftC 58s ease-in-out infinite alternate;
}
@keyframes ambDriftA { to { transform: translate(9vw, 7vh) scale(1.12); } }
@keyframes ambDriftB { to { transform: translate(-8vw, -9vh) scale(0.92); } }
@keyframes ambDriftC { to { transform: translate(6vw, -6vh) scale(1.08); } }
.amb-grid {
  position: absolute; inset: 0;
  background-image: var(--grid-img);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 38%, black 30%, transparent 78%);
  mask-image: radial-gradient(120% 90% at 50% 38%, black 30%, transparent 78%);
}

/* 微噪点质感 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2000;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; background: none; border: 0; color: inherit; cursor: pointer; }
::selection { background: rgba(47, 143, 230, 0.35); color: #fff; }

.container { max-width: var(--container); margin: 0 auto; padding-inline: var(--pad); }
.section { padding-block: clamp(90px, 12vh, 160px); }
.section-tight { padding-block: clamp(40px, 6vh, 80px); }

/* ── 滚动条 ── */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #23262f; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #333742; }

/* ═══════════ 加载动画 ═══════════ */
.loader {
  position: fixed; inset: 0; z-index: 3000;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.9s var(--ease), visibility 0.9s;
}
.loader.is-done { transform: translateY(-100%); visibility: hidden; }
.loader-inner { text-align: center; }
.loader-logo { font-size: clamp(34px, 6vw, 56px); font-weight: 800; letter-spacing: 0.32em; margin-left: 0.32em; }
.loader-logo span { display: inline-block; opacity: 0; transform: translateY(24px); animation: loaderChar 0.7s var(--ease) forwards; }
.loader-logo span:nth-child(1) { animation-delay: 0.05s; color: var(--accent); }
.loader-logo span:nth-child(2) { animation-delay: 0.12s; }
.loader-logo span:nth-child(3) { animation-delay: 0.19s; }
.loader-logo span:nth-child(4) { animation-delay: 0.26s; }
.loader-logo span:nth-child(5) { animation-delay: 0.33s; }
.loader-logo span:nth-child(6) { animation-delay: 0.4s; }
.loader-logo span:nth-child(7) { animation-delay: 0.47s; }
.loader-logo span:nth-child(8) { animation-delay: 0.54s; }
@keyframes loaderChar { to { opacity: 1; transform: none; } }
.loader-sub {
  margin-top: 14px; font-size: 12px; letter-spacing: 0.5em; margin-left: 0.5em;
  color: var(--muted); opacity: 0; animation: loaderChar 0.8s var(--ease) 0.5s forwards;
}
.loader-bar {
  width: min(260px, 60vw); height: 1px; background: var(--line);
  margin: 34px auto 0; overflow: hidden;
}
.loader-bar i { display: block; height: 100%; width: 0; background: var(--accent-grad); transition: width 0.3s ease; }

/* ═══════════ 滚动进度条 ═══════════ */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 1500; pointer-events: none; }
.scroll-progress i { display: block; height: 100%; width: 0; background: var(--accent-grad); }

/* ═══════════ 导航 ═══════════ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background 0.45s ease, border-color 0.45s ease, backdrop-filter 0.45s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(10, 11, 15, 0.72);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: var(--line-soft);
}
/* 菜单打开时顶栏需盖过全屏菜单层，否则关闭按钮不可点 */
.site-header.is-menu-open { z-index: 1200; background: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; border-bottom-color: transparent; }
.header-inner {
  max-width: var(--container); margin: 0 auto; padding-inline: var(--pad);
  height: var(--header-h);
  display: flex; align-items: center; gap: clamp(16px, 3vw, 40px);
}
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-mark { width: 34px; height: 34px; object-fit: contain; display: block; flex: none; }
.brand-wordmark { width: clamp(138px, 11.5vw, 174px); height: auto; object-fit: contain; display: block; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: 16px; font-weight: 700; letter-spacing: 0.14em; }
.brand-text i { font-style: normal; font-size: 9px; letter-spacing: 0.24em; color: var(--muted); font-family: var(--mono); }

.nav { display: flex; gap: clamp(14px, 2.2vw, 30px); }
.nav a {
  position: relative; font-size: 14.5px; color: var(--muted); padding: 6px 2px;
  letter-spacing: 0.04em;
  transition: color 0.3s ease;
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1.5px; background: var(--accent-grad);
  transition: right 0.4s var(--ease);
}
.nav a:hover, .nav a.is-active { color: var(--text); }
.nav a:hover::after, .nav a.is-active::after { right: 0; }

.header-cta {
  display: flex; align-items: center; gap: 9px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.05em;
  padding: 9px 18px; border: 1px solid var(--line);
  border-radius: 100px;
  transition: border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.header-cta svg { width: 15px; height: 15px; color: var(--accent); transition: color 0.3s ease; }
.header-cta:hover { background: var(--accent); border-color: var(--accent); color: #14100b; }
.header-cta:hover svg { color: #14100b; }

.lang-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  min-width: 68px; justify-content: center;
  padding: 8px 11px; border: 1px solid var(--line); border-radius: 100px;
  color: var(--muted); font: 600 12px/1 var(--mono); letter-spacing: 0.05em;
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.lang-toggle i { color: var(--faint); font-style: normal; }
.lang-toggle:hover, .lang-toggle[aria-pressed="true"] {
  color: var(--text); border-color: var(--accent); background: rgba(47, 143, 230, 0.1);
}
.lang-toggle .lang-zh { color: var(--text); }
.lang-toggle[aria-pressed="true"] .lang-zh { color: var(--muted); }
.lang-toggle[aria-pressed="true"] .lang-en { color: var(--accent); }

/* 英文模式：让较长的英文词组自然换行，并建立更舒适的阅读节奏 */
html[data-lang="en"] body {
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}
html[data-lang="en"] .header-inner { gap: clamp(12px, 1.8vw, 28px); }
html[data-lang="en"] .brand-text b { font-size: 14px; letter-spacing: 0.08em; }
html[data-lang="en"] .nav { gap: clamp(10px, 1.45vw, 21px); }
html[data-lang="en"] .nav a { font-size: 13px; letter-spacing: 0.01em; white-space: nowrap; }
html[data-lang="en"] .header-cta { padding-inline: 14px; font-size: 13px; }
html[data-lang="en"] .hero-title {
  display: flex; flex-direction: column;
  gap: clamp(4px, .7vw, 10px);
  max-width: 900px;
  font-family: "Helvetica Neue", Inter, "Segoe UI", Arial, sans-serif;
  font-size: clamp(48px, 6.1vw, 88px);
  font-weight: 700;
  line-height: .98;
  letter-spacing: -0.045em;
}
html[data-lang="en"] .hero-title > .reveal-line,
html[data-lang="en"] .hero-title > .reveal-line > span { display: block; }
html[data-lang="en"] .hero-title .br-sm { display: block; }
html[data-lang="en"] .section-head h2 br,
html[data-lang="en"] .contact-head h2 br,
html[data-lang="en"] .s-card-cta h3 br { display: none; }
html[data-lang="en"] .hero-desc { max-width: 760px; line-height: 1.72; }
html[data-lang="en"] .hero-tags { gap: 8px; }
html[data-lang="en"] .hero-tags span { letter-spacing: 0.02em; }
html[data-lang="en"] .section-head h2,
html[data-lang="en"] .contact-head h2 {
  max-width: 940px; font-size: clamp(34px, 4.6vw, 62px);
  line-height: 1.08; letter-spacing: -0.035em;
}
html[data-lang="en"] .section-sub { max-width: 760px; line-height: 1.75; }
html[data-lang="en"] .stat p { line-height: 1.45; }
html[data-lang="en"] .about-copy .lead { line-height: 1.72; }
html[data-lang="en"] .about-copy > p:not(.lead) { line-height: 1.8; }
html[data-lang="en"] .about-points li b,
html[data-lang="en"] .culture-item b,
html[data-lang="en"] .process-step h3,
html[data-lang="en"] .biz-head h3,
html[data-lang="en"] .s-card h3,
html[data-lang="en"] .c-card b { letter-spacing: -0.015em; }
html[data-lang="en"] .culture-item { padding-inline: clamp(20px, 2.3vw, 30px); }
html[data-lang="en"] .culture-item span,
html[data-lang="en"] .process-step p,
html[data-lang="en"] .biz-copy p,
html[data-lang="en"] .s-card p,
html[data-lang="en"] .g-point p { line-height: 1.72; }
html[data-lang="en"] .process-step h3 { line-height: 1.12; }
html[data-lang="en"] .biz-head { gap: clamp(14px, 2vw, 26px); }
html[data-lang="en"] .biz-tag { letter-spacing: 0.01em; }
html[data-lang="en"] .revenue-note { line-height: 1.55; }
html[data-lang="en"] .c-card em { letter-spacing: 0.18em; }
html[data-lang="en"] .footer-brand b { letter-spacing: 0.02em; }

@media (max-width: 1180px) and (min-width: 1025px) {
  html[data-lang="en"] .header-cta { display: none; }
  html[data-lang="en"] .nav { gap: 12px; }
  html[data-lang="en"] .nav a { font-size: 12.5px; }
}

@media (max-width: 600px) {
  html[data-lang="en"] .hero-title {
    gap: 4px;
    font-size: clamp(38px, 11.5vw, 50px);
    line-height: 1;
    letter-spacing: -0.04em;
  }
  .contact-details { font-size: 14.5px !important; }
}

.menu-toggle { display: none; width: 42px; height: 42px; position: relative; z-index: 1101; }
.menu-toggle i {
  position: absolute; left: 10px; right: 10px; height: 2px; background: var(--text);
  transition: transform 0.4s var(--ease), top 0.4s var(--ease);
}
.menu-toggle i:nth-child(1) { top: 17px; }
.menu-toggle i:nth-child(2) { top: 25px; }
.menu-toggle.is-open i:nth-child(1) { top: 21px; transform: rotate(45deg); }
.menu-toggle.is-open i:nth-child(2) { top: 21px; transform: rotate(-45deg); }

/* 移动菜单 */
.mobile-menu {
  position: fixed; inset: 0; z-index: 1100;
  background: rgba(10, 11, 15, 0.96);
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--pad);
  clip-path: circle(0 at calc(100% - 52px) 38px);
  visibility: hidden;
  transition: clip-path 0.7s var(--ease), visibility 0.7s;
}
.mobile-menu.is-open { clip-path: circle(150% at calc(100% - 52px) 38px); visibility: visible; }
.mobile-menu nav { display: flex; flex-direction: column; gap: 6px; }
.mobile-menu a {
  display: flex; align-items: baseline; gap: 18px;
  font-size: clamp(28px, 7vw, 40px); font-weight: 700; padding: 10px 0;
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.mobile-menu.is-open a { opacity: 1; transform: none; }
.mobile-menu.is-open a:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.is-open a:nth-child(2) { transition-delay: 0.16s; }
.mobile-menu.is-open a:nth-child(3) { transition-delay: 0.22s; }
.mobile-menu.is-open a:nth-child(4) { transition-delay: 0.28s; }
.mobile-menu.is-open a:nth-child(5) { transition-delay: 0.34s; }
.mobile-menu.is-open a:nth-child(6) { transition-delay: 0.4s; }
.mobile-menu a em { font-style: normal; font-size: 13px; color: var(--accent); font-family: var(--mono); }
.mobile-menu-foot { margin-top: 48px; color: var(--muted); font-size: 13px; line-height: 2; }

/* ═══════════ 按钮 ═══════════ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px; border-radius: 100px;
  font-size: 15px; font-weight: 600; letter-spacing: 0.06em;
  transition: transform 0.35s var(--ease), background 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.btn svg { width: 17px; height: 17px; transition: transform 0.35s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-solid {
  background: var(--accent-grad); color: #16100a;
  box-shadow: 0 8px 32px rgba(21, 96, 184, 0.28);
}
.btn-solid:hover { transform: translateY(-3px); box-shadow: 0 14px 44px rgba(21, 96, 184, 0.4); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.28); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* ═══════════ HERO ═══════════ */
.hero { position: relative; min-height: 100svh; display: flex; flex-direction: column; overflow: hidden; }
.hero-media { position: absolute; inset: 0; z-index: -1; }
.hero-media img {
  width: 100%; height: 112%; object-fit: cover;
  animation: kenburns 14s var(--ease) forwards;
  filter: saturate(0.92) contrast(1.05);
  will-change: transform;
}
@keyframes kenburns { from { transform: scale(1.12); } to { transform: scale(1); } }
.hero-veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(to right, rgba(8, 10, 14, 0.9) 0%, rgba(8, 10, 14, 0.67) 45%, rgba(8, 10, 14, 0.18) 100%),
    linear-gradient(to top, rgba(8, 10, 14, 0.72) 0%, rgba(8, 10, 14, 0.08) 42%, rgba(8, 10, 14, 0.42) 100%);
}
.hero-content {
  flex: 1; display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container); width: 100%;
  margin: 0 auto; padding: calc(var(--header-h) + 44px) var(--pad) 44px;
}
.hero-eyebrow {
  font-family: var(--mono); font-size: clamp(10px, 1.3vw, 13px);
  letter-spacing: 0.42em; color: var(--accent); margin-bottom: clamp(18px, 3vh, 30px);
}
.hero-title { display:flex; flex-direction:column; gap:clamp(4px,.7vw,10px); max-width:900px; font-size:clamp(52px,6.9vw,98px); font-weight:800; line-height:.98; letter-spacing:-.045em; }
.hero-title em { font-style: normal; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
/* 窄屏专用换行：8 字标语在小屏拆成两行，避免字号下限触发折行断字 */
.br-sm { display: none; }
.hero-foot {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
  gap: 28px; margin-top: clamp(30px, 5vh, 52px);
}
.hero-desc { font-size: clamp(15px, 1.6vw, 17.5px); color: rgba(239, 237, 232, 0.82); line-height: 2; }
.hero-actions span { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-support { max-width:680px; margin-top:clamp(28px,4vh,42px); color:rgba(239,237,232,.78); font-size:clamp(14px,1.4vw,17px); line-height:1.8; }
.hero-product-cta { width:min(520px,100%); margin-top:clamp(32px,5vh,54px); overflow:hidden; }
.hero-cta-inner { min-height:124px; padding:26px 30px 26px 34px; display:flex!important; align-items:center; justify-content:space-between; gap:28px; background:var(--accent); color:#06101a; transition:background .3s ease,transform .35s var(--ease),box-shadow .35s ease!important; }
.hero-cta-copy { display:flex; flex-direction:column; gap:12px; }
.hero-cta-copy small { font:600 9px/1 var(--mono); letter-spacing:.22em; opacity:.62; }
.hero-cta-copy b { font-size:clamp(22px,2vw,30px); letter-spacing:.02em; }
.hero-cta-icon { width:56px; height:56px; border-left:1px solid rgba(6,16,26,.22); display:flex; align-items:center; justify-content:flex-end; flex:none; }
.hero-cta-icon svg { width:31px; height:31px; transition:transform .3s ease; }
.hero-product-cta:hover .hero-cta-inner { background:#50a9f1; transform:translateY(-3px); box-shadow:0 18px 52px rgba(25,117,202,.28); }
.hero-product-cta:hover .hero-cta-icon svg { transform:translateX(5px); }

/* 逐行揭示 */
.reveal-line { display: block; overflow: hidden; }
.reveal-line > span { display: inline-block; transform: translateY(115%); transition: transform 1.1s var(--ease); }
.is-entered .reveal-line > span { transform: none; }
.is-entered .reveal-line:nth-of-type(1) > span { transition-delay: 0.05s; }
.hero-title .reveal-line:nth-child(1) > span { transition-delay: 0.12s; }
.hero-title .reveal-line:nth-child(2) > span { transition-delay: 0.24s; }
.hero-foot .reveal-line > span { transition-delay: 0.4s; }

.hero-bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  max-width: var(--container); width: 100%; margin: 0 auto;
  padding: 0 var(--pad) 34px;
}
.hero-scroll { display: flex; align-items: center; gap: 12px; color: var(--faint); font-family: var(--mono); font-size: 10px; letter-spacing: 0.35em; }
.hero-scroll i { width: 1px; height: 44px; background: linear-gradient(var(--accent), transparent); display: block; animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%, 100% { transform: scaleY(0.4); transform-origin: top; opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.hero-tags span {
  font-size: 12px; letter-spacing: 0.12em; color: rgba(239, 237, 232, 0.75);
  padding: 7px 15px; border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 100px;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.04);
}

/* ═══════════ 跑马灯 ═══════════ */
.marquee { border-block: 1px solid var(--line-soft); padding-block: 22px; overflow: hidden; background: var(--bg-2); }
.marquee-track { display: flex; width: max-content; animation: marquee 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee-group { display: flex; align-items: center; flex: none; }
.marquee-group span {
  font-size: clamp(15px, 1.9vw, 19px); font-weight: 600; letter-spacing: 0.22em;
  color: var(--faint); padding-inline: 30px; white-space: nowrap;
  transition: color 0.3s ease;
}
.marquee-group span:hover { color: var(--accent); }
.marquee-group i { font-style: normal; font-size: 8px; color: var(--accent); opacity: 0.7; }

/* ═══════════ 数据带 ═══════════ */
.stats { padding-block: clamp(70px, 9vh, 110px); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(24px, 3vw, 40px); }
.stat { position: relative; padding-left: 22px; }
.stat::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 1px;
  background: linear-gradient(var(--accent) 0%, transparent 100%);
}
.stat-num { display: flex; align-items: baseline; gap: 4px; }
.stat-num b {
  font-size: clamp(40px, 5.2vw, 64px); font-weight: 800; line-height: 1.1;
  letter-spacing: 0.01em; font-variant-numeric: tabular-nums;
}
.stat-num span { font-size: clamp(15px, 1.6vw, 19px); color: var(--accent); font-weight: 700; }
.stat p { margin-top: 10px; font-size: 14.5px; color: var(--text); font-weight: 500; }
.stat p em { display: block; font-style: normal; font-size: 12.5px; color: var(--muted); margin-top: 3px; }

/* ═══════════ 通用节头 ═══════════ */
.section-head { margin-bottom: clamp(44px, 7vh, 80px); max-width: 780px; }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.4em;
  color: var(--accent); margin-bottom: 20px; text-transform: uppercase;
}
.section-head h2, .contact-head h2 {
  font-size: clamp(32px, 5vw, 58px); font-weight: 800; line-height: 1.22; letter-spacing: 0.02em;
}
.section-head h2 em, .contact-head h2 em {
  font-style: normal;
  background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-sub { margin-top: 20px; color: var(--muted); font-size: clamp(14.5px, 1.5vw, 16px); max-width: 620px; }

/* ═══════════ 滚动 Reveal ═══════════ */
[data-reveal] {
  opacity: 0; transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--d, 0s);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ═══════════ 关于睿恩新 ═══════════ */
.about { background-color: var(--bg-2); background-image: var(--grid-img); position: relative; overflow: hidden; }
.about::before {
  content: "REENTION"; position: absolute; top: clamp(20px, 4vw, 60px); right: -0.06em;
  font-size: clamp(80px, 16vw, 220px); font-weight: 800; letter-spacing: 0.04em;
  color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.045);
  pointer-events: none; user-select: none; line-height: 1;
}
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(36px, 5vw, 80px); align-items: start; }
.about-copy .lead { font-size: clamp(16.5px, 1.8vw, 19px); line-height: 1.95; margin-bottom: 22px; }
.about-copy .lead b { color: var(--accent); font-weight: 700; }
.about-copy > p:not(.lead) { color: var(--muted); font-size: 15px; margin-bottom: 34px; }
.about-points { list-style: none; display: flex; flex-direction: column; }
.about-points li {
  display: grid; grid-template-columns: 200px 1fr; gap: 18px; align-items: baseline;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.about-points li:last-child { border-bottom: 1px solid var(--line); }
.about-points b { font-size: 15.5px; font-weight: 700; }
.about-points span { color: var(--muted); font-size: 13.5px; }
.about-depts { margin-top: 34px; }
.about-depts em { font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; color: var(--faint); display: block; margin-bottom: 14px; }
.about-depts div { display: flex; flex-wrap: wrap; gap: 8px; }
.about-depts span {
  font-size: 12.5px; color: var(--muted); padding: 6px 14px;
  border: 1px solid var(--line); border-radius: 100px;
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease);
}
.about-depts span:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

.about-media { position: relative; }
.img-frame { overflow: hidden; border-radius: 6px; position: relative; }
.img-frame::after {
  content: ""; position: absolute; inset: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  border-radius: 6px; pointer-events: none;
}
.img-frame img {
  filter: saturate(0.95); transform: scale(1.02);
  transition: transform 1.2s var(--ease), filter 0.6s ease;
}
.img-frame:hover img { transform: scale(1.08); filter: saturate(1.08); }
.about-card {
  position: relative; margin: -54px 26px 0 auto; width: min(340px, 88%);
  background: rgba(16, 18, 26, 0.9);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 24px 26px;
}
.about-card em { font-style: normal; font-family: var(--mono); font-size: 10px; letter-spacing: 0.32em; color: var(--accent); }
.about-card b { display: block; font-size: 19px; margin: 10px 0 8px; }
.about-card span { font-size: 13px; color: var(--muted); }

.cert-row {
  margin-top: clamp(52px, 7vh, 84px);
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
}
.cert {
  padding: 26px 28px; border-right: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.015));
  transition: background 0.4s ease;
  position: relative; overflow: hidden;
}
.cert:last-child { border-right: 0; }
.cert::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent-grad); transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.cert:hover::before { transform: scaleX(1); }
.cert:hover { background: rgba(47, 143, 230, 0.05); }
.cert b { display: block; font-size: clamp(16px, 1.7vw, 20px); letter-spacing: 0.04em; }
.cert span { display: block; margin-top: 7px; font-size: 12.5px; color: var(--muted); }

/* ═══════════ 企业文化 ═══════════ */
.culture { background-color: var(--bg-2); background-image: var(--grid-img); padding-bottom: clamp(90px, 12vh, 150px); }
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.culture-item {
  background: var(--bg-2); padding: clamp(26px, 3vw, 40px) clamp(22px, 2.6vw, 34px);
  position: relative; overflow: hidden; display: block;
  transition: background 0.45s ease;
}
.culture-item::after {
  content: "→"; position: absolute; right: 26px; bottom: 20px;
  color: var(--accent); opacity: 0; transform: translateX(-10px);
  transition: opacity 0.4s ease, transform 0.4s var(--ease);
}
.culture-item:hover { background: #14161f; }
.culture-item:hover::after { opacity: 1; transform: none; }
.culture-item em { font-style: normal; font-family: var(--mono); font-size: 10px; letter-spacing: 0.3em; color: var(--faint); transition: color 0.3s; }
.culture-item:hover em { color: var(--accent); }
.culture-item b { display: block; font-size: clamp(19px, 2.1vw, 24px); font-weight: 800; margin: 16px 0 12px; letter-spacing: 0.06em; }
.culture-item span { font-size: 13px; color: var(--muted); line-height: 1.9; }

/* ═══════════ 智造实力（滚动画廊） ═══════════ */
/* 顶部交界光：从纯黑区进入时的一道地平线光 */
.process { position: relative; }
.process::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(1100px, 92vw); height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 143, 230, 0.45), transparent);
}
.process::after {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(780px, 74vw); height: 240px; pointer-events: none;
  background: radial-gradient(52% 100% at 50% 0%, rgba(47, 143, 230, 0.07), transparent);
}
.process-wrap { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(32px, 4.5vw, 72px); align-items: start; }
/* 工序竖线：串联七道工序 */
.process-steps { display: flex; flex-direction: column; position: relative; }
.process-steps::before {
  content: ""; position: absolute; left: 0; top: 4vh; bottom: 4vh; width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.22) 8%, rgba(255, 255, 255, 0.22) 92%, transparent);
}
.process-step { min-height: 88vh; display: flex; align-items: center; }
.step-inner { padding-block: 40px; padding-left: clamp(28px, 3vw, 46px); max-width: 520px; position: relative; }
/* 工序节点 */
.step-inner::before {
  content: ""; position: absolute; left: -4.5px; top: 47px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bg); border: 1px solid rgba(255, 255, 255, 0.25);
  transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}
.process-step.is-active .step-inner::before {
  background: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 0 5px rgba(47, 143, 230, 0.15), 0 0 22px rgba(47, 143, 230, 0.55);
}
.step-no { font-style: normal; font-family: var(--mono); font-size: 12px; letter-spacing: 0.34em; color: var(--accent); }
.process-step h3 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; margin: 18px 0 18px; letter-spacing: 0.03em; }
.process-step p { color: var(--muted); font-size: 15px; line-height: 2; }
.step-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.step-chips span {
  font-size: 12.5px; letter-spacing: 0.06em; padding: 8px 16px;
  border: 1px solid var(--line); border-radius: 100px; color: var(--text);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s, color 0.3s;
}
.step-chips span:hover { border-color: var(--accent); color: var(--accent); }
.process-step { opacity: 0.28; transition: opacity 0.6s ease; }
.process-step.is-active { opacity: 1; }
.step-media-m { display: none; }

.process-media { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; }
/* 背景超大工序序号水印 */
.process-ghost {
  position: absolute; z-index: 0; right: -0.03em; top: 5vh;
  font-size: clamp(140px, 16vw, 250px); font-weight: 800; line-height: 1;
  letter-spacing: 0.02em; font-variant-numeric: tabular-nums;
  color: transparent; -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.075);
  user-select: none;
  transition: opacity 0.4s ease, transform 0.7s var(--ease);
}
.process-ghost.is-swap { opacity: 0; transform: translateY(30px); }
.process-media-stack {
  position: relative; z-index: 1; width: 100%; aspect-ratio: 16 / 10.2;
  border-radius: 8px; overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}
.process-media-stack::after {
  content: ""; position: absolute; inset: 0; border-radius: 8px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  pointer-events: none; z-index: 3;
}
.process-media-stack figure {
  position: absolute; inset: 0; opacity: 0; transform: scale(1.06);
  transition: opacity 0.8s var(--ease), transform 1.2s var(--ease);
}
.process-media-stack figure.is-active { opacity: 1; transform: scale(1); z-index: 2; }
.process-media-stack img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.95); }
.process-counter {
  position: absolute; right: 26px; bottom: 22px; z-index: 4;
  display: flex; align-items: baseline; gap: 6px;
  font-family: var(--mono); color: #fff;
  background: rgba(10, 11, 15, 0.55);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  padding: 10px 18px; border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.process-counter b { font-size: 20px; font-weight: 700; color: var(--accent); }
.process-counter span { font-size: 11px; color: rgba(255, 255, 255, 0.6); letter-spacing: 0.2em; }

/* ═══════════ 主营业务 ═══════════ */
.business { background-color: var(--bg-2); background-image: var(--grid-img); }
.biz-list { border-top: 1px solid var(--line); }
.biz-item { border-bottom: 1px solid var(--line); }
.biz-head {
  width: 100%; display: flex; align-items: center; gap: clamp(16px, 2.6vw, 34px);
  padding: clamp(22px, 3vw, 34px) 4px; text-align: left;
  transition: padding 0.4s var(--ease);
}
.biz-head:hover { padding-left: 14px; }
.biz-head em {
  font-style: normal; font-family: var(--mono); font-size: 13px;
  color: var(--faint); transition: color 0.3s;
}
.biz-item.is-open .biz-head em { color: var(--accent); }
.biz-head h3 {
  font-size: clamp(20px, 3vw, 34px); font-weight: 800; letter-spacing: 0.03em;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  transition: color 0.3s;
}
.biz-core {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.1em; color: var(--accent);
  border: 1px solid rgba(47, 143, 230, 0.45); border-radius: 100px; padding: 5px 13px;
  background: rgba(47, 143, 230, 0.08); white-space: nowrap;
}
.biz-tag { margin-left: auto; font-size: 12.5px; color: var(--muted); letter-spacing: 0.08em; white-space: nowrap; }
.biz-plus { position: relative; width: 34px; height: 34px; flex: none; border: 1px solid var(--line); border-radius: 50%; transition: transform 0.5s var(--ease), border-color 0.3s, background 0.3s; }
.biz-plus::before, .biz-plus::after {
  content: ""; position: absolute; top: 50%; left: 50%; background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.5s var(--ease);
}
.biz-plus::before { width: 12px; height: 1.5px; }
.biz-plus::after { width: 1.5px; height: 12px; }
.biz-item.is-open .biz-plus { transform: rotate(135deg); border-color: var(--accent); background: rgba(47, 143, 230, 0.1); color: var(--accent); }
.biz-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.7s var(--ease); }
.biz-body > div { overflow: hidden; }
.biz-item.is-open .biz-body { grid-template-rows: 1fr; }
.biz-body-grid {
  display: grid; grid-template-columns: minmax(280px, 460px) 1fr;
  gap: clamp(24px, 3.5vw, 52px); align-items: center;
  padding: 6px 4px clamp(28px, 4vw, 44px);
}
.biz-body-grid figure { overflow: hidden; border-radius: 6px; position: relative; aspect-ratio: 3 / 2; background: #11141a; }
.biz-body-grid figure::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); border-radius: 6px; }
.biz-body-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease), opacity .28s ease, filter .28s ease; }
.biz-body-grid img.is-switching { opacity: .18; filter: blur(5px); transform: scale(1.025); }
.biz-body-grid figure:hover img { transform: scale(1.06); }
.biz-visual-label {
  position: absolute; left: 16px; bottom: 14px; z-index: 2;
  padding: 7px 11px; border: 1px solid rgba(255,255,255,.18); border-radius: 100px;
  background: rgba(8,10,14,.72); backdrop-filter: blur(10px);
  color: #fff; font-size: 11px; letter-spacing: .08em; pointer-events: none;
}
.biz-copy p { color: var(--muted); font-size: 15px; line-height: 2; }
.biz-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.biz-chips button {
  font-size: 12.5px; padding: 7px 15px; border-radius: 100px;
  border: 1px solid var(--line); color: var(--text);
  transition: border-color 0.3s, color 0.3s, background .3s, transform .3s var(--ease);
}
.biz-chips button:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.biz-chips button.is-active { border-color: var(--accent); color: var(--accent); background: rgba(47,143,230,.11); }
.biz-chips button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* 营收构成 */
.revenue {
  margin-top: clamp(60px, 8vh, 100px);
  border: 1px solid var(--line); border-radius: 8px;
  padding: clamp(28px, 4vw, 52px);
  background: linear-gradient(150deg, rgba(47, 143, 230, 0.05), transparent 42%), var(--card);
}
.revenue-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 36px; }
.revenue-head h3 { font-size: clamp(21px, 2.4vw, 28px); font-weight: 800; display: flex; align-items: baseline; gap: 14px; }
.revenue-head h3 em { font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; color: var(--faint); }
.revenue-note { font-size: 12px; color: var(--faint); max-width: 460px; }
.revenue-bars { display: flex; flex-direction: column; gap: 22px; }
.rbar { display: grid; grid-template-columns: minmax(180px, 300px) 1fr 64px; gap: clamp(14px, 2.5vw, 30px); align-items: center; }
.rbar-label b { display: block; font-size: 15.5px; }
.rbar-label span { font-size: 12px; color: var(--faint); }
.rbar-track { height: 8px; border-radius: 4px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.rbar-track i {
  display: block; height: 100%; width: 0; border-radius: 4px;
  background: var(--accent-grad);
  transition: width 1.4s var(--ease);
}
.revenue.is-in .rbar-track i { width: var(--w); }
.rbar:nth-child(2) .rbar-track i { transition-delay: 0.12s; }
.rbar:nth-child(3) .rbar-track i { transition-delay: 0.24s; opacity: 0.75; }
.rbar:nth-child(4) .rbar-track i { transition-delay: 0.36s; opacity: 0.55; }
.rbar em { font-style: normal; font-weight: 800; font-size: 18px; font-variant-numeric: tabular-nums; text-align: right; color: var(--accent); }

/* ═══════════ 核心优势 ═══════════ */
.strength-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.s-card {
  position: relative; border: 1px solid var(--line); border-radius: 8px;
  padding: clamp(28px, 3vw, 40px) clamp(24px, 2.6vw, 34px);
  background: var(--card); overflow: hidden;
  transition: border-color 0.4s ease, transform 0.5s var(--ease);
}
.s-card:hover { border-color: rgba(47, 143, 230, 0.4); transform: translateY(-6px); }
/* 鼠标跟随光斑 */
.s-card::before {
  content: ""; position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(47, 143, 230, 0.13), transparent 65%);
  transition: opacity 0.45s ease;
}
.s-card:hover::before { opacity: 1; }
.s-card em {
  font-style: normal; font-family: var(--mono); font-size: 13px;
  color: var(--faint); display: block; margin-bottom: 40px;
  transition: color 0.3s;
}
.s-card:hover em { color: var(--accent); }
.s-card h3 { font-size: clamp(19px, 2vw, 23px); font-weight: 800; margin-bottom: 14px; letter-spacing: 0.03em; position: relative; }
.s-card p { color: var(--muted); font-size: 14px; line-height: 1.95; position: relative; }
.s-card-cta {
  display: flex; flex-direction: column; justify-content: space-between; gap: 28px;
  background: linear-gradient(140deg, rgba(47, 143, 230, 0.14), rgba(21, 96, 184, 0.05) 60%), var(--card);
  border-color: rgba(47, 143, 230, 0.3);
}
.s-card-cta h3 { font-size: clamp(21px, 2.2vw, 26px); line-height: 1.5; }
.s-card-cta .btn { align-self: flex-start; }

/* ═══════════ 发展前景 ═══════════ */
.growth { background-color: var(--bg-2); background-image: var(--grid-img); }
.growth-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(40px, 5vw, 80px); align-items: center; }
.chart {
  border: 1px solid var(--line); border-radius: 8px; background: var(--card);
  padding: clamp(28px, 3.6vw, 48px);
}
.chart-bars { display: flex; align-items: flex-end; gap: clamp(14px, 2.4vw, 30px); height: clamp(220px, 30vw, 320px); }
.cbar { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; gap: 12px; }
.cbar b { font-size: clamp(17px, 1.9vw, 22px); font-weight: 800; font-variant-numeric: tabular-nums; opacity: 0; transform: translateY(8px); transition: opacity 0.6s ease 0.9s, transform 0.6s var(--ease) 0.9s; }
.cbar b i { font-style: normal; font-size: 12px; color: var(--muted); margin-left: 2px; }
.chart.is-in .cbar b { opacity: 1; transform: none; }
.cbar-fill {
  width: 100%; max-width: 96px; height: 0; border-radius: 5px 5px 0 0;
  background: linear-gradient(to top, rgba(47, 143, 230, 0.14), rgba(47, 143, 230, 0.42));
  border: 1px solid rgba(47, 143, 230, 0.24); border-bottom: 0;
  transition: height 1.3s var(--ease);
}
/* --h 为 0–1 的无单位比例：先扣除标签与年份占位，再按比例分配，
   使跨度极大的数据（500 万 → 1.5 亿）也能按真实比例呈现 */
.chart.is-in .cbar-fill { height: calc((100% - 58px) * var(--h)); min-height: 5px; }
.cbar:nth-child(2) .cbar-fill { transition-delay: 0.14s; }
.cbar:nth-child(3) .cbar-fill { transition-delay: 0.28s; }
.cbar:nth-child(4) .cbar-fill { transition-delay: 0.42s; }
.cbar:nth-child(5) .cbar-fill { transition-delay: 0.56s; }
.cbar.is-hot .cbar-fill { background: linear-gradient(to top, rgba(21, 96, 184, 0.5), #4ca6f0); border-color: rgba(108, 192, 255, 0.6); box-shadow: 0 0 34px rgba(47, 143, 230, 0.3); }
.cbar.is-hot b { color: var(--accent); }
.cbar span { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.14em; }
.chart-cap { margin-top: 22px; text-align: center; font-size: 12px; color: var(--faint); letter-spacing: 0.2em; }

.growth-copy { display: flex; flex-direction: column; }
.g-point { padding: 26px 0; border-top: 1px solid var(--line); }
.g-point:last-child { border-bottom: 1px solid var(--line); }
.g-point em {
  font-style: normal; display: inline-block; font-size: 13px; font-weight: 700;
  color: var(--accent); letter-spacing: 0.22em; margin-bottom: 10px;
}
.g-point p { color: var(--muted); font-size: 14.5px; line-height: 2; }

/* ═══════════ 联系我们 ═══════════ */
.contact { position: relative; overflow: hidden; }
.contact::before {
  content: ""; position: absolute; inset: -20% -10%;
  background: radial-gradient(46% 42% at 74% 18%, rgba(47, 143, 230, 0.1), transparent 70%);
  pointer-events: none;
}
.contact::after {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(1100px, 92vw); height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 143, 230, 0.35), transparent);
}
.contact-head { margin-bottom: clamp(44px, 6vh, 72px); position: relative; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; position: relative; }
.c-card {
  display: block; border: 1px solid var(--line); border-radius: 8px;
  padding: clamp(30px, 3.4vw, 44px) clamp(26px, 3vw, 38px);
  background: var(--card);
  transition: transform 0.5s var(--ease), border-color 0.4s ease, background 0.4s ease;
}
.c-card:hover { transform: translateY(-8px); border-color: rgba(47, 143, 230, 0.45); background: #151823; }
.c-card em { font-style: normal; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.3em; color: var(--faint); }
.c-card b { display: block; font-size: clamp(19px, 2vw, 24px); line-height: 1.55; margin: 18px 0 14px; font-weight: 800; }
.c-card span { font-size: 13px; color: var(--muted); transition: color 0.3s; }
.c-card:hover span { color: var(--accent); }
.contact-details {
  display: flex !important; flex-direction: column; gap: 6px;
  font-size: clamp(15px, 1.45vw, 18px) !important;
  line-height: 1.35 !important; letter-spacing: 0 !important;
}
.contact-details a, .contact-details span {
  color: var(--text); font: inherit; white-space: nowrap;
}
.contact-details a { transition: color 0.25s ease; }
.contact-details a:hover { color: var(--accent); }
.c-card:hover .contact-details span { color: var(--text); }

/* ═══════════ 页脚 ═══════════ */
.site-footer { border-top: 1px solid var(--line); background: var(--bg); }
.footer-inner { padding-block: clamp(40px, 6vh, 64px); display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }
.footer-brand { display: flex; align-items: center; gap: 14px; margin-right: auto; }
.footer-brand .brand-mark { width: 38px; height: 38px; }
.footer-brand .footer-wordmark { width: 132px; }
.footer-brand b { display: block; font-size: 16px; letter-spacing: 0.1em; }
.footer-brand span { font-size: 10px; color: var(--faint); font-family: var(--mono); letter-spacing: 0.18em; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-nav a { font-size: 13.5px; color: var(--muted); transition: color 0.3s; }
.footer-nav a:hover { color: var(--accent); }
.footer-note { width: 100%; padding-top: 26px; border-top: 1px solid var(--line-soft); font-size: 12.5px; color: var(--faint); }

/* ═══════════ 回到顶部 ═══════════ */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--line); background: rgba(16, 18, 26, 0.8);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity 0.4s ease, visibility 0.4s, transform 0.4s var(--ease), border-color 0.3s, background 0.3s;
}
.to-top svg { width: 18px; height: 18px; }
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--accent); background: var(--accent); color: #14100b; }

/* ═══════════ 响应式 ═══════════ */
@media (max-width: 1024px) {
  .nav, .header-cta { display: none; }
  .lang-toggle { margin-left: auto; }
  .menu-toggle { display: block; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-points li { grid-template-columns: 1fr; gap: 4px; }
  .cert-row { grid-template-columns: repeat(2, 1fr); }
  .cert { border-bottom: 1px solid var(--line); }
  .cert:nth-child(n+3) { border-bottom: 0; }
  .cert:nth-child(2n) { border-right: 0; }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }

  /* 工艺画廊：退化为纵向卡片 */
  .process-wrap { grid-template-columns: 1fr; }
  .process-media { display: none; }
  .process-step { min-height: 0; opacity: 1; }
  .process-steps::before { display: none; }
  .step-inner::before { display: none; }
  .step-inner { max-width: none; padding-block: 34px; padding-left: 0; border-top: 1px solid var(--line); width: 100%; }
  .process-step:last-child .step-inner { border-bottom: 1px solid var(--line); }
  .step-media-m { display: block; margin-top: 26px; border-radius: 6px; overflow: hidden; }
  .step-media-m img { width: 100%; }

  .biz-tag { display: none; }
  .biz-body-grid { grid-template-columns: 1fr; }
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
  .growth-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .brand-wordmark { width: 132px; }
  .hero-content { justify-content:flex-end; padding:calc(var(--header-h) + 72px) var(--pad) 44px; }
  .hero-title { font-size:clamp(42px,12.5vw,58px); line-height:1.02; gap:4px; }
  .hero-support { margin-top:24px; font-size:14px; line-height:1.7; }
  .hero-product-cta { margin-top:30px; }
  .hero-cta-inner { min-height:104px; padding:22px 22px 22px 24px; }
  .hero-cta-copy { gap:10px; }
  .hero-cta-copy b { font-size:23px; }
  .hero-cta-icon { width:46px; height:46px; }
  .hero-cta-icon svg { width:27px; height:27px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px 18px; }
  .stat { padding-left: 16px; }
  .hero-tags { display: none; }
  .hero-foot { margin-top: 26px; }
  .br-lg { display: none; }
  .cert-row { grid-template-columns: 1fr; }
  .cert { border-right: 0; border-bottom: 1px solid var(--line); }
  .cert:nth-child(n+3) { border-bottom: 1px solid var(--line); }
  .cert:last-child { border-bottom: 0; }
  .culture-grid { grid-template-columns: 1fr; }
  .strength-grid { grid-template-columns: 1fr; }
  .rbar { grid-template-columns: 1fr 52px; }
  .rbar-label { grid-column: 1 / -1; }
  .biz-head h3 { font-size: 19px; }
  .biz-core { display: none; }
  .to-top { right: 16px; bottom: 16px; }
}

@media (max-width: 460px) {
  .br-sm { display: inline; }
}