/* ============================================================
   红之影 HONGZHIYING — 企业官网样式
   品牌色取自《2026红之影简介》封面：浅白 + 青蓝渐变
   ============================================================ */

:root {
  --ink: #16292F;
  --ink-soft: #46616B;
  --ink-faint: #7A939C;
  --primary: #0D4A61;
  --primary-deep: #08303F;
  --teal: #2E8CA3;
  --teal-light: #8FBECC;
  --teal-mist: #E3F0F3;
  --gold: #B9902F;
  --gold-light: #D8B869;
  --bg: #FFFFFF;
  --bg-soft: #F2F8FA;
  --bg-soft2: #E9F2F5;
  --line: #D7E5EA;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 12px rgba(13, 74, 97, 0.06);
  --shadow-md: 0 12px 40px rgba(13, 74, 97, 0.12);
  --shadow-lg: 0 24px 64px rgba(13, 74, 97, 0.16);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
::selection { background: var(--teal); color: #fff; }

.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

/* ---------- 通用组件 ---------- */
.section { padding: clamp(72px, 9vw, 124px) 0; }
.section--soft { background: var(--bg-soft); }

.section-head { max-width: 760px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--gold);
}
.section-head.center .eyebrow::after {
  content: "";
  width: 28px; height: 1px;
  background: var(--gold);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--primary-deep);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.section-sub {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--ink-soft);
  line-height: 1.9;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 34px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: all 0.35s var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 28px rgba(13, 74, 97, 0.28);
}
.btn--primary:hover {
  background: var(--primary-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(13, 74, 97, 0.34);
}
.btn--ghost {
  border: 1px solid var(--teal);
  color: var(--primary);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn--gold {
  background: linear-gradient(120deg, var(--gold) 0%, var(--gold-light) 100%);
  color: #fff;
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(185, 144, 47, 0.35); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: all 0.4s var(--ease);
  background: transparent;
}
.nav::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  z-index: -1;
}
.nav.scrolled::after { opacity: 1; }
.nav.scrolled { box-shadow: 0 4px 24px rgba(13, 74, 97, 0.08); }

.nav-inner {
  width: min(1280px, 94vw);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-mark {
  width: 40px; height: 40px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--teal) 100%);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 6px 16px rgba(13, 74, 97, 0.3);
  position: relative;
}
.logo-mark::after {
  content: "";
  position: absolute;
  right: -3px; top: -3px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-deep);
  letter-spacing: 0.14em;
}
.logo-en {
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--ink-faint);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 32px);
}
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 2px;
  transition: color 0.3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: all 0.35s var(--ease);
  transform: translateX(-50%);
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary-deep); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-cta { height: 42px; padding: 0 24px; font-size: 14px; }

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px 9px;
  z-index: 110;
}
.nav-burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--primary-deep);
  border-radius: 2px;
  transition: all 0.35s var(--ease);
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 105;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-menu a {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-deep);
  padding: 12px 32px;
  letter-spacing: 0.1em;
}
.mobile-menu a:hover { color: var(--teal); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: var(--nav-h);
  overflow: hidden;
  background: var(--bg-soft);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0.1) 34%, rgba(255,255,255,0.05) 60%, rgba(242,248,250,0.96) 100%),
    linear-gradient(100deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.55) 46%, rgba(255,255,255,0) 72%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1200px, 92vw);
  margin-inline: auto;
  padding-bottom: clamp(40px, 6vh, 72px);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.34em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 22px;
  padding: 8px 18px;
  border: 1px solid var(--teal-light);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(6px);
}
.hero-eyebrow i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  font-style: normal;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(38px, 6.4vw, 74px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--primary-deep);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}
.hero-title em {
  font-style: normal;
  color: var(--teal);
  position: relative;
}
.hero-slogan {
  font-family: var(--serif);
  font-size: clamp(17px, 2vw, 23px);
  letter-spacing: 0.5em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 26px;
}
.hero-desc {
  max-width: 620px;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--ink-soft);
  line-height: 2;
  margin-bottom: 38px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* Hero 数据条 */
.hero-stats {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
}
.hero-stats-inner {
  width: min(1200px, 92vw);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}
.stat {
  padding: 26px 18px 24px;
  text-align: center;
  position: relative;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0; top: 22%;
  height: 56%; width: 1px;
  background: var(--line);
}
.stat-num {
  font-family: var(--serif);
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat-num sup {
  font-size: 0.5em;
  color: var(--gold);
  margin-left: 2px;
  font-weight: 600;
}
.stat-label {
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}

/* ---------- 关键词跑马灯 ---------- */
.marquee {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.92);
  overflow: hidden;
  padding: 15px 0;
  position: relative;
}
.marquee-track {
  display: flex;
  gap: 0;
  width: max-content;
  animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 34px;
  padding-right: 34px;
  font-size: 14px;
  letter-spacing: 0.22em;
  white-space: nowrap;
}
.marquee-item i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gold-light);
  font-style: normal;
  flex-shrink: 0;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.about-text p {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 2.05;
  margin-bottom: 18px;
  text-align: justify;
}
.about-text p strong { color: var(--primary); font-weight: 600; }
.about-quote {
  margin-top: 28px;
  padding: 20px 26px;
  border-left: 3px solid var(--gold);
  background: var(--bg-soft);
  border-radius: 0 8px 8px 0;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--primary-deep);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.8;
}
.about-figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 16px;
}
.about-figures .fig-main { grid-column: 1 / -1; }
.about-figures figure {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.about-figures img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.about-figures figure:hover img { transform: scale(1.05); }
.about-figures .fig-main { aspect-ratio: 16 / 9.4; }
.about-figures .fig-sub { aspect-ratio: 4 / 3; }
.about-figures figcaption {
  position: absolute;
  left: 14px; bottom: 12px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: #fff;
  padding: 5px 14px;
  background: rgba(8, 48, 63, 0.55);
  backdrop-filter: blur(4px);
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.25);
}

/* ---------- 核心业务 ---------- */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.biz-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: clamp(28px, 3vw, 40px);
  overflow: hidden;
  transition: all 0.45s var(--ease);
}
.biz-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 3px; height: 0;
  background: linear-gradient(180deg, var(--teal), var(--primary));
  transition: height 0.5s var(--ease);
}
.biz-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--teal-light);
}
.biz-card:hover::before { height: 100%; }
.biz-no {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 12px;
}
.biz-icon {
  width: 52px; height: 52px;
  border-radius: 10px;
  background: var(--teal-mist);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  transition: all 0.45s var(--ease);
}
.biz-card:hover .biz-icon {
  background: var(--primary);
  transform: rotate(-6deg);
}
.biz-icon svg { width: 26px; height: 26px; stroke: var(--primary); transition: stroke 0.45s; }
.biz-card:hover .biz-icon svg { stroke: #fff; }
.biz-card h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}
.biz-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.95;
  text-align: justify;
}

/* ---------- 核心优势 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}
.adv-card {
  grid-column: span 2;
  background: var(--white);
  border-radius: 12px;
  padding: 34px 30px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.45s var(--ease);
}
.adv-card:nth-child(4), .adv-card:nth-child(5) { grid-column: span 3; }
.adv-card::after {
  content: attr(data-idx);
  position: absolute;
  right: 14px; top: 6px;
  font-family: var(--serif);
  font-size: 74px;
  font-weight: 700;
  color: var(--bg-soft2);
  line-height: 1;
  z-index: 0;
  transition: color 0.45s;
}
.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--teal-light);
}
.adv-card:hover::after { color: var(--teal-mist); }
.adv-card > * { position: relative; z-index: 1; }
.adv-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(13, 74, 97, 0.25);
}
.adv-icon svg { width: 22px; height: 22px; stroke: #fff; }
.adv-card h3 {
  font-family: var(--serif);
  font-size: 18.5px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}
.adv-card p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.95;
  text-align: justify;
}

/* ---------- 产品品类 ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.prod-card {
  border-radius: 14px;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: all 0.45s var(--ease);
  display: flex;
  flex-direction: column;
}
.prod-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.prod-img {
  aspect-ratio: 16 / 10.5;
  overflow: hidden;
  position: relative;
}
.prod-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.prod-card:hover .prod-img img { transform: scale(1.07); }
.prod-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 48, 63, 0.42) 100%);
}
.prod-tag {
  position: absolute;
  left: 16px; top: 16px;
  z-index: 2;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: #fff;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(13, 74, 97, 0.55);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(4px);
}
.prod-body { padding: 28px 28px 30px; flex: 1; }
.prod-body h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.prod-body .prod-en {
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--gold);
  font-weight: 600;
  text-transform: uppercase;
  display: block;
  margin-bottom: 14px;
}
.prod-body p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.95;
  text-align: justify;
}
.prod-points {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.prod-points li {
  font-size: 12px;
  color: var(--primary);
  background: var(--teal-mist);
  border-radius: 4px;
  padding: 3px 10px;
  letter-spacing: 0.05em;
}

/* ---------- 服务流程 ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  position: relative;
}
.process-grid::before {
  content: "";
  position: absolute;
  left: 6%; right: 6%;
  top: 34px;
  height: 1px;
  background: linear-gradient(90deg, var(--teal-light), var(--gold-light), var(--teal-light));
  z-index: 0;
}
.proc-step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 8px;
}
.proc-no {
  width: 68px; height: 68px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transition: all 0.45s var(--ease);
}
.proc-step:hover .proc-no {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.08);
  box-shadow: 0 12px 28px rgba(13, 74, 97, 0.3);
}
.proc-step h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 10px;
  letter-spacing: 0.06em;
}
.proc-step p {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.9;
}

.promise-row {
  margin-top: clamp(48px, 6vw, 72px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.promise {
  background: linear-gradient(150deg, var(--primary-deep) 0%, var(--primary) 60%, var(--teal) 130%);
  border-radius: 14px;
  padding: 34px 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.promise::before {
  content: "";
  position: absolute;
  right: -30px; bottom: -40px;
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.16);
}
.promise::after {
  content: "";
  position: absolute;
  right: -8px; bottom: -18px;
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
}
.promise-num {
  font-family: var(--serif);
  font-size: clamp(30px, 3.2vw, 42px);
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
  margin-bottom: 8px;
}
.promise-num small { font-size: 0.42em; margin-left: 4px; font-weight: 600; }
.promise h4 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.promise p {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
}

/* ---------- 生产环境画廊 ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.gal-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-sm);
}
.gal-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.gal-item:hover img { transform: scale(1.07); }
.gal-item figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 40px 18px 14px;
  background: linear-gradient(180deg, transparent, rgba(8, 48, 63, 0.72));
  color: #fff;
  font-size: 13.5px;
  letter-spacing: 0.12em;
  transform: translateY(6px);
  opacity: 0;
  transition: all 0.4s var(--ease);
}
.gal-item:hover figcaption { transform: translateY(0); opacity: 1; }
.gal-item::after {
  content: "⤢";
  position: absolute;
  right: 12px; top: 12px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-size: 15px;
  opacity: 0;
  transform: scale(0.7);
  transition: all 0.4s var(--ease);
}
.gal-item:hover::after { opacity: 1; transform: scale(1); }

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8, 30, 40, 0.92);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
  padding: 4vw;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox img {
  max-width: min(1080px, 92vw);
  max-height: 86vh;
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.lightbox-cap {
  position: absolute;
  bottom: 4vh;
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  letter-spacing: 0.14em;
}
.lightbox-close {
  position: absolute;
  top: 3vh; right: 3vw;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  color: #fff;
  font-size: 20px;
  display: grid;
  place-items: center;
  transition: all 0.3s;
}
.lightbox-close:hover { background: rgba(255,255,255,0.15); }

/* ---------- 品牌理念 ---------- */
.philo-hero {
  text-align: center;
  max-width: 880px;
  margin-inline: auto;
}
.philo-quote {
  font-family: var(--serif);
  font-size: clamp(28px, 4.4vw, 52px);
  font-weight: 700;
  color: var(--primary-deep);
  letter-spacing: 0.16em;
  line-height: 1.5;
  margin-bottom: 8px;
}
.philo-quote .dot { color: var(--gold); }
.philo-tenet {
  font-size: clamp(14px, 1.5vw, 17px);
  letter-spacing: 0.4em;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 34px;
}
.philo-dimensions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}
.dim-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 22px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: all 0.35s var(--ease);
}
.dim-chip i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  font-style: normal;
}
.dim-chip:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.audience-grid {
  margin-top: clamp(48px, 6vw, 72px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.aud-card {
  border-radius: 14px;
  padding: clamp(30px, 3.4vw, 44px);
  position: relative;
  overflow: hidden;
}
.aud-card--person {
  background: linear-gradient(155deg, var(--primary-deep), var(--primary) 70%, var(--teal));
  color: #fff;
}
.aud-card--org {
  background: var(--white);
  border: 1px solid var(--line);
}
.aud-card .aud-en {
  font-size: 11px;
  letter-spacing: 0.3em;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.aud-card--person .aud-en { color: var(--gold-light); }
.aud-card--org .aud-en { color: var(--gold); }
.aud-card h3 {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}
.aud-card--person h3 { color: #fff; }
.aud-card--org h3 { color: var(--primary-deep); }
.aud-card p {
  font-size: 14.5px;
  line-height: 2;
  text-align: justify;
}
.aud-card--person p { color: rgba(255,255,255,0.82); }
.aud-card--org p { color: var(--ink-soft); }
.aud-card .aud-tags {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.aud-card .aud-tags li {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 0.06em;
}
.aud-card--person .aud-tags li {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  color: rgba(255,255,255,0.9);
}
.aud-card--org .aud-tags li {
  background: var(--teal-mist);
  color: var(--primary);
}

/* 愿景使命 */
.vision {
  margin-top: clamp(48px, 6vw, 72px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(32px, 4vw, 52px);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
  box-shadow: var(--shadow-sm);
}
.vision-badge {
  font-family: var(--serif);
  writing-mode: vertical-rl;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5em;
  color: #fff;
  background: linear-gradient(180deg, var(--primary), var(--teal));
  border-radius: 8px;
  padding: 26px 14px;
  text-align: center;
}
.vision p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 2.1;
  text-align: justify;
}
.vision p + p { margin-top: 12px; }
.vision strong { color: var(--primary); font-weight: 600; }

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.6vw, 48px);
  align-items: stretch;
  max-width: 680px;
  margin-inline: auto;
}
.contact-info {
  background: linear-gradient(160deg, var(--primary-deep) 0%, var(--primary) 65%, var(--teal) 135%);
  border-radius: 16px;
  padding: clamp(32px, 3.6vw, 48px);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.contact-info::before {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.14);
}
.contact-info::after {
  content: "";
  position: absolute;
  right: -20px; top: -20px;
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.1);
}
.contact-info h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: 0.06em;
  line-height: 1.5;
}
.contact-info .ci-en {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gold-light);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.contact-info > p {
  font-size: 13.5px;
  color: rgba(255,255,255,0.72);
  margin-bottom: 30px;
  line-height: 1.9;
}
.ci-list { display: flex; flex-direction: column; gap: 18px; position: relative; z-index: 1; }
.ci-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(255,255,255,0.18);
}
.ci-item:last-child { border-bottom: none; padding-bottom: 0; }
.ci-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.ci-icon svg { width: 19px; height: 19px; stroke: var(--gold-light); }
.ci-label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}
.ci-value { font-size: 15px; font-weight: 500; line-height: 1.6; }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--primary-deep);
  color: rgba(255,255,255,0.72);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer .logo-cn { color: #fff; }
.footer .logo-en { color: rgba(255,255,255,0.45); }
.footer-about {
  margin-top: 20px;
  font-size: 13.5px;
  line-height: 2;
  color: rgba(255,255,255,0.6);
  text-align: justify;
}
.footer h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.14em;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}
.footer h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 24px; height: 2px;
  background: var(--gold);
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  font-size: 13.5px;
  color: rgba(255,255,255,0.62);
  transition: all 0.3s;
  width: fit-content;
}
.footer-links a:hover { color: #fff; padding-left: 6px; }
.footer-contact-item {
  display: flex;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.9;
  margin-bottom: 12px;
  color: rgba(255,255,255,0.62);
}
.footer-contact-item b { color: var(--gold-light); font-weight: 500; flex-shrink: 0; }
.footer-bottom {
  padding: 22px 0 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom .filing { letter-spacing: 0.05em; color: rgba(255,255,255,0.62); text-decoration: none; }
.footer-bottom .filing:hover { color: var(--gold-light); }
.ci-value a, .footer-contact-item a { color: inherit; text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 1px; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 90;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 26px rgba(13, 74, 97, 0.35);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: all 0.4s var(--ease);
}
.back-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-top:hover { background: var(--primary-deep); transform: translateY(-3px); }
.back-top svg { width: 18px; height: 18px; stroke: #fff; }

/* ---------- 滚动显现动画（仅在 JS 可用时启用，避免无脚本时内容不可见） ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
html.js .reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }

/* 打印时全部内容可见 */
@media print {
  .reveal, html.js .reveal { opacity: 1 !important; transform: none !important; }
  .nav { position: absolute; }
  .marquee-track { animation: none; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-stats-inner { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(4)::before { display: none; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-card, .adv-card:nth-child(4), .adv-card:nth-child(5) { grid-column: span 1; }
  .adv-card:last-child { grid-column: 1 / -1; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 920px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 22px; }
  .process-grid::before { display: none; }
  .promise-row { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .vision { grid-template-columns: 1fr; }
  .vision-badge { writing-mode: horizontal-tb; padding: 14px 26px; letter-spacing: 0.4em; width: fit-content; }
  /* 窄屏视野短，跑马灯需放慢，否则一条短语来不及读 */
  .marquee-track { animation-duration: 54s; }
}

@media (max-width: 640px) {
  :root { --nav-h: 64px; }
  body { font-size: 15px; }
  .hero-eyebrow { font-size: 10.5px; letter-spacing: 0.18em; padding: 7px 14px; gap: 8px; }
  .hero-stats-inner { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 20px 10px; }
  .stat:nth-child(odd)::before { display: none; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .biz-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv-card:last-child { grid-column: auto; }
  .process-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gal-item { aspect-ratio: 16 / 10; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .marquee-item { font-size: 12.5px; gap: 24px; padding-right: 24px; }
  .marquee-track { animation-duration: 68s; }
  .hero-slogan { letter-spacing: 0.3em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  /* 跑马灯是装饰性慢速横向滚动。若沿用上面的 0.01ms，infinite 循环会退化成高频闪动（"快闪"），
     所以这里单独还原真实时长，并比常规档再慢一档，兼顾"减少动效"的偏好。 */
  .marquee-track { animation-duration: 44s !important; }
}

@media (prefers-reduced-motion: reduce) and (max-width: 920px) {
  .marquee-track { animation-duration: 60s !important; }
}

@media (prefers-reduced-motion: reduce) and (max-width: 640px) {
  .marquee-track { animation-duration: 72s !important; }
}