/* =========================================================
   凡华能源科技 · 官网设计系统
   设计语言参考 KYOS：圆润胶囊按钮、大圆角卡片、有机曲线、
   超大数字统计、全屏菜单；品牌色：科技深蓝 / 中国红 / 能源蓝
   ========================================================= */

:root {
  /* 品牌色 */
  --navy: #0b2a5b;        /* 科技深蓝：Hero、深色底 */
  --navy-deep: #071d42;
  --navy-2: #14408a;
  --blue: #2f7de0;        /* 天然气蓝：点缀 */
  --red: #be1b2e;         /* 品牌红（取自凡华 logo）：主 CTA、强调 */
  --orange: #ff6f00;      /* 能源橙：小标签、链接元信息 */
  --yellow: #ffc53d;      /* 亮黄：首要胶囊按钮 */
  --silver: #c9d1de;      /* 金属银 */

  /* 中性色 */
  --cream: #fdf7f2;       /* 奶油底 */
  --cream-2: #f8efe6;
  --peach: #f8dfcc;
  --white: #ffffff;
  --ink: #14264a;         /* 标题深墨蓝 */
  --body: #46556e;        /* 正文 */
  --muted: #7a869a;
  --line: #e8e2da;

  /* 形状 */
  --r-pill: 999px;
  --r-card: 32px;
  --r-card-sm: 22px;
  --shadow: 0 24px 60px -24px rgba(20, 38, 74, .18);
  --shadow-soft: 0 12px 40px -18px rgba(20, 38, 74, .14);

  --container: 1200px;
  --font: "Figtree", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--body);
  background: var(--white);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
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; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.22; letter-spacing: -.01em; }

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.section { padding: 110px 0; position: relative; }
.section--cream { background: var(--cream); }
.section--white { background: #fff; }
.section--navy { background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%); color: #fff; }
.section--navy h1, .section--navy h2, .section--navy h3 { color: #fff; }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  color: var(--orange);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 18px;
}
.section--navy .eyebrow { color: var(--yellow); }
h2.h-title { font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; }
.h-sub { margin-top: 20px; font-size: 18px; color: var(--body); }
.section--navy .h-sub { color: rgba(255,255,255,.82); }

/* ---------- 按钮（胶囊） ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  padding: 19px 38px;
  border-radius: var(--r-pill);
  font-size: 17px; font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
}
.btn .arr { transition: transform .25s ease; flex: none; }
.btn:hover { transform: translateY(-2px); }
.btn:hover .arr { transform: translateX(5px); }
.btn-yellow { background: var(--yellow); color: #3a2200; box-shadow: 0 14px 30px -12px rgba(255,197,61,.65); }
.btn-red { background: var(--red); color: #fff; box-shadow: 0 16px 34px -14px rgba(190,27,46,.7); }
.btn-outline { border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-outline-light { border: 1.6px solid rgba(255,255,255,.85); color: #fff; }
.btn-outline-light:hover { background: #fff; color: var(--navy); }
.btn-blue { background: var(--navy); color: #fff; }
.btn-ghost { padding: 19px 8px; color: var(--navy); font-weight: 700; gap: 8px; }
.btn-ghost:hover { color: var(--red); }
.btn-sm { padding: 13px 26px; font-size: 15px; }

/* 文字链接箭头 */
.link-arrow { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--navy); }
.link-arrow svg { transition: transform .25s ease; }
.link-arrow:hover { color: var(--red); }
.link-arrow:hover svg { transform: translateX(5px); }

/* ---------- 顶栏 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  padding: 22px 0;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.site-header .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-header.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 30px -18px rgba(20,38,74,.35);
  padding: 12px 0;
}
.brand { display: flex; align-items: center; gap: 12px; color: #fff; transition: color .3s ease; }
.brand .brand-mark { width: 46px; height: 46px; flex: none; }
img.brand-mark { display: block; object-fit: contain; }
.brand-text b { display: block; font-size: 21px; font-weight: 800; letter-spacing: .02em; line-height: 1.1; }
.brand-text small { display: block; font-size: 11.5px; font-weight: 500; opacity: .8; letter-spacing: .14em; }
.site-header.scrolled .brand { color: var(--navy); }

.menu-toggle {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--yellow); color: #3a2200;
  padding: 15px 30px; border-radius: var(--r-pill);
  font-size: 17px; font-weight: 700;
  transition: transform .25s ease;
}
.menu-toggle:hover { transform: translateY(-2px); }
.menu-toggle .lines { width: 20px; height: 14px; position: relative; flex: none; }
.menu-toggle .lines span {
  position: absolute; left: 0; width: 100%; height: 2px; background: #3a2200; border-radius: 2px;
  transition: transform .3s ease, top .3s ease, opacity .2s ease;
}
.menu-toggle .lines span:nth-child(1) { top: 0; }
.menu-toggle .lines span:nth-child(2) { top: 6px; }
.menu-toggle .lines span:nth-child(3) { top: 12px; }
body.menu-open .menu-toggle .lines span:nth-child(1) { top: 6px; transform: rotate(45deg); }
body.menu-open .menu-toggle .lines span:nth-child(2) { opacity: 0; }
body.menu-open .menu-toggle .lines span:nth-child(3) { top: 6px; transform: rotate(-45deg); }
.menu-toggle .label-open { display: inline; }
.menu-toggle .label-close { display: none; }
body.menu-open .menu-toggle .label-open { display: none; }
body.menu-open .menu-toggle .label-close { display: inline; }
body.menu-open .brand { color: var(--navy); }

/* ---------- 全屏菜单 ---------- */
.menu-overlay {
  display: block;
  position: fixed; inset: 0; z-index: 80;
  background: var(--white);
  padding: 120px 28px 60px;
  opacity: 0; visibility: hidden;
  transform: translateY(-12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s;
  overflow-y: auto;
}
body.menu-open .menu-overlay { opacity: 1; visibility: visible; transform: translateY(0); }
.menu-overlay .menu-rule { height: 2px; background: var(--orange); border: 0; margin: 22px 0 40px; border-radius: 2px; }
.menu-cta { width: 100%; margin-bottom: 48px; font-size: 19px; padding: 22px; }
.menu-list { display: flex; flex-direction: column; gap: 6px; }
.menu-list > li > a, .menu-list > li > .menu-group-title {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; text-align: left;
  font-size: clamp(24px, 3.4vw, 34px); font-weight: 700; color: var(--ink);
  padding: 18px 4px; border-bottom: 1px solid var(--line);
}
.menu-list .arr-ne { color: var(--red); font-size: .7em; font-weight: 700; }
.menu-sub { padding: 4px 0 16px 18px; display: none; }
.menu-sub a {
  display: block; padding: 9px 0; color: var(--body); font-size: 16.5px; font-weight: 500;
}
.menu-sub a:hover { color: var(--red); }
.menu-group.open .menu-sub { display: block; }
.menu-group.open .arr-ne { transform: rotate(180deg); }
.arr-ne { transition: transform .25s ease; }
.menu-foot { margin-top: 44px; color: var(--muted); font-size: 14px; display: flex; flex-direction: column; gap: 8px; }

/* ---------- 顶栏水平导航（仅桌面显示，移动端走全屏菜单） ---------- */
.top-nav { display: none; }

@media (min-width: 1080px) {
  .menu-toggle { display: none; }
  .top-nav { display: flex; align-items: center; gap: 20px; }
  .top-nav-list { display: flex; align-items: center; gap: 1px; list-style: none; }
  .top-nav-link {
    position: relative;
    display: inline-flex; align-items: center; gap: 5px;
    padding: 9px 11px; border-radius: var(--r-pill);
    font-size: 15px; font-weight: 600; white-space: nowrap;
    color: rgba(255,255,255,.9);
    transition: color .2s ease, background .2s ease;
  }
  .top-nav-link .caret { flex: none; transition: transform .22s ease; }
  .top-nav-link:hover { color: #fff; background: rgba(255,255,255,.14); }
  .top-nav-link.is-active { color: #fff; background: rgba(255,255,255,.17); }
  .has-drop:hover .top-nav-link,
  .has-drop:focus-within .top-nav-link { color: #fff; background: rgba(255,255,255,.14); }
  .has-drop:hover .top-nav-link .caret,
  .has-drop:focus-within .top-nav-link .caret { transform: rotate(180deg); }

  .site-header.scrolled .top-nav-link { color: var(--ink); }
  .site-header.scrolled .top-nav-link:hover { color: var(--red); background: rgba(190,27,46,.08); }
  .site-header.scrolled .top-nav-link.is-active { color: var(--red); background: rgba(190,27,46,.1); font-weight: 700; }
  .site-header.scrolled .has-drop:hover .top-nav-link,
  .site-header.scrolled .has-drop:focus-within .top-nav-link { color: var(--red); background: rgba(190,27,46,.08); }

  .has-drop { position: relative; }
  .top-drop {
    position: absolute; top: calc(100% + 10px); left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 218px; padding: 8px;
    background: #fff; border-radius: 18px;
    box-shadow: 0 26px 54px -20px rgba(11,42,91,.4), 0 0 0 1px rgba(11,42,91,.06);
    opacity: 0; visibility: hidden;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
    z-index: 5;
  }
  /* 透明桥，避免鼠标移入下拉时间隙断档 */
  .top-drop::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }
  .has-drop:hover .top-drop,
  .has-drop:focus-within .top-drop {
    opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
  }
  .top-drop a {
    display: block; padding: 10px 14px; border-radius: 11px;
    font-size: 14.5px; font-weight: 600; color: var(--ink);
    transition: background .18s ease, color .18s ease;
  }
  .top-drop a:hover { background: rgba(190,27,46,.08); color: var(--red); }

  .top-nav-cta {
    display: inline-flex; align-items: center;
    background: var(--red); color: #fff;
    padding: 11px 22px; border-radius: var(--r-pill);
    font-size: 15px; font-weight: 700; white-space: nowrap;
    box-shadow: 0 12px 26px -12px rgba(190,27,46,.8);
    transition: transform .2s ease, box-shadow .2s ease;
  }
  .top-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -12px rgba(190,27,46,.85); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(165deg, var(--navy) 0%, var(--navy-deep) 78%);
  color: #fff;
  padding: 168px 0 0;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 2;
  background:
    radial-gradient(620px 380px at 82% 8%, rgba(47,125,224,.34), transparent 65%),
    radial-gradient(540px 360px at 8% 30%, rgba(255,111,0,.12), transparent 60%);
  pointer-events: none;
}
/* 首屏产业图斜切拼贴背景（呼应 PPT 首页） */
.hero-collage {
  position: absolute; inset: 0; z-index: 0;
  display: flex; align-items: stretch;
  pointer-events: none;
}
.hero-collage .hc-item {
  flex: 1 1 0; min-width: 0; height: 100%;
  background-size: cover; background-position: center; background-repeat: no-repeat;
  opacity: .2;
  clip-path: polygon(48px 0, 100% 0, calc(100% - 48px) 100%, 0 100%);
  margin-left: -46px;
}
.hero-collage .hc-item:first-of-type { margin-left: 0; }
.hero-collage .hc-red {
  flex: 0 0 clamp(90px, 12%, 220px); height: 100%;
  background: var(--red, #be1b2e);
  opacity: .55;
}
.hero-collage .hc-red--l { clip-path: polygon(0 0, 100% 0, calc(100% - 44px) 100%, 0 100%); }
.hero-collage .hc-red--r {
  clip-path: polygon(44px 0, 100% 0, 100% 100%, 0 100%);
  margin-left: -46px;
}
.hero-veil {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg,
    rgba(10,33,74,.80) 0%,
    rgba(10,33,74,.30) 42%,
    rgba(9,24,56,.42) 68%,
    rgba(9,24,56,.94) 100%);
}
.hero .container { position: relative; z-index: 3; }
.hero-inner { text-align: center; max-width: 900px; margin: 0 auto; padding-bottom: clamp(72px, 10vh, 120px); }
.hero-overline {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid rgba(255,255,255,.35);
  padding: 9px 22px; border-radius: var(--r-pill);
  font-size: 14.5px; font-weight: 600; letter-spacing: .05em; color: rgba(255,255,255,.92);
  margin-bottom: 30px;
}
.hero-overline .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--yellow); }
.hero h1 {
  color: #fff;
  font-size: clamp(38px, 5.4vw, 66px);
  font-weight: 800; line-height: 1.14; letter-spacing: -.015em;
}
.hero h1 .accent { color: var(--yellow); }
.hero-lead {
  margin: 26px auto 0; max-width: 760px;
  font-size: 18.5px; line-height: 1.85; color: rgba(255,255,255,.88);
}
.hero-actions { margin-top: 40px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-wave { position: relative; z-index: 4; line-height: 0; margin-top: -2px; }
@media (max-width: 760px) {
  .hero-collage .hc-item--hide-s { display: none; }
  .hero-collage .hc-item {
    opacity: .17;
    clip-path: polygon(30px 0, 100% 0, calc(100% - 30px) 100%, 0 100%);
    margin-left: -28px;
  }
  .hero-collage .hc-red { flex-basis: 64px; opacity: .5; }
  .hero-collage .hc-red--l { clip-path: polygon(0 0, 100% 0, calc(100% - 28px) 100%, 0 100%); }
  .hero-collage .hc-red--r { clip-path: polygon(28px 0, 100% 0, 100% 100%, 0 100%); margin-left: -28px; }
}
.hero-wave svg { width: 100%; height: 90px; display: block; }

/* 内页小 Hero */
.page-hero { padding: 150px 0 96px; text-align: center; }
.page-hero .hero-overline { margin-bottom: 22px; }
.page-hero h1 { color: #fff; font-size: clamp(34px, 4.6vw, 54px); font-weight: 800; }
.page-hero p { max-width: 820px; margin: 22px auto 0; color: rgba(255,255,255,.85); font-size: 18px; }
/* 中文排版：平衡换行，避免标题/短段落出现单字孤行 */
.page-hero h1, .page-hero p, .hero h1, .hero p, .cta-band h2, .cta-band p,
.section-head h2, .section-head p, .h-title, .fr-body .lead {
  text-wrap: pretty;
}
/* 全站正文与标题统一平衡折行（不支持的浏览器自动回退普通折行） */
:is(h1, h2, h3, h4, h5, p, li, td, label) { text-wrap: pretty; }
/* 中文行首/行尾禁则兜底：标点不被折到行首，括号不留在行尾 */
:is(h1, h2, h3, h4, h5, p, li, td, label) { line-break: strict; }
.keep { white-space: nowrap; }
/* 大标题桌面/窄屏分别使用各自的语义换行点，避免词语被拦腰折断 */
.br-mobile { display: none; }
@media (max-width: 600px) {
  .br-desktop { display: none; }
  .br-mobile { display: inline; }
}
.breadcrumb { display: block; margin-top: 26px; font-size: 14px; color: rgba(255,255,255,.65); }
.breadcrumb a:hover { color: var(--yellow); }

/* ---------- 客户跑马灯 ---------- */
.trusted { padding: 78px 0 70px; background: #fff; }
.trusted-title { text-align: center; font-size: clamp(20px, 2.2vw, 26px); font-weight: 700; color: var(--ink); margin-bottom: 40px; }
.trusted-title .num { color: var(--orange); }
.marquee { overflow: hidden; position: relative; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 18px; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.partner-chip {
  flex: none; min-width: 200px;
  border: 1px solid var(--line); border-radius: 20px;
  padding: 22px 28px; text-align: center;
  color: var(--ink); font-weight: 700; font-size: 17px;
  background: #fff;
  display: flex; flex-direction: column; gap: 4px; justify-content: center;
}
.partner-chip small { font-size: 12.5px; color: var(--muted); font-weight: 500; }
@keyframes marquee { to { transform: translateX(-50%); } }
.trusted-more { text-align: center; margin-top: 40px; }

/* ---------- 介绍区（奶油底 + 有机曲线） ---------- */
.intro-band { position: relative; overflow: hidden; }
.intro-band::before {
  content: ""; position: absolute;
  right: -260px; top: -200px;
  width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff 0%, #f8efe6 70%);
  border: 1px solid #f1e4d6;
}
.intro-band .container { position: relative; z-index: 1; }
.intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 70px; align-items: center; }
.intro-text p { margin-bottom: 20px; font-size: 17.5px; }
.intro-text p strong { color: var(--ink); }
.intro-card {
  background: #fff; border-radius: var(--r-card); padding: 38px;
  box-shadow: var(--shadow);
}
.intro-card h3 { font-size: 21px; margin-bottom: 22px; }
.intro-list li {
  display: flex; gap: 14px; padding: 15px 0; border-bottom: 1px dashed var(--line);
  font-size: 16px; color: var(--ink); font-weight: 600;
}
.intro-list li:last-child { border-bottom: 0; }
.intro-list .ic {
  width: 38px; height: 38px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(47,125,224,.14), rgba(255,111,0,.12));
  color: var(--navy);
}
.intro-list small { display: block; font-weight: 500; color: var(--body); font-size: 13.5px; margin-top: 2px; }

/* ---------- 数字统计 ---------- */
.stats { background: var(--cream); padding: 90px 0; position: relative; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; }
.stat .num {
  font-size: clamp(46px, 5vw, 68px); font-weight: 800; color: var(--ink);
  line-height: 1.05; letter-spacing: -.02em; display: flex; align-items: baseline;
}
.stat .num em { font-style: normal; color: var(--red); }
.stat .num--biz em { font-size: .58em; font-weight: 700; white-space: nowrap; }
.stat p { margin-top: 12px; color: var(--body); font-size: 15.5px; max-width: 230px; text-wrap: balance; }
.br-stat { display: none; }
@media (min-width: 1021px) { .br-stat { display: inline; } }

/* ---------- 卡片网格 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  background: #fff; border-radius: var(--r-card);
  padding: 38px 34px;
  border: 1px solid #f0ebe4;
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card-ic {
  width: 60px; height: 60px; border-radius: 18px;
  display: grid; place-items: center; margin-bottom: 22px;
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: #fff;
}
.card-ic.red { background: linear-gradient(135deg, var(--red), #ef7d3f); }
.card-ic.orange { background: linear-gradient(135deg, var(--orange), #ffb13d); }
.card-ic.blue { background: linear-gradient(135deg, var(--blue), #7db4f2); }
.card h3 { font-size: 21px; margin-bottom: 12px; }
.card p { font-size: 15.5px; color: var(--body); }
.card .card-more { margin-top: 20px; font-weight: 700; font-size: 15px; color: var(--navy); display: inline-flex; gap: 8px; align-items: center; }
.card:hover .card-more { color: var(--red); }
.card .card-more svg { transition: transform .25s; }
.card:hover .card-more svg { transform: translateX(4px); }

/* 图片卡片（产品/文章） */
.media-card {
  background: #fff; border-radius: var(--r-card); overflow: hidden;
  border: 1px solid #f0ebe4;
  display: flex; flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
}
.media-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.media-card .mc-img { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.media-card .mc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.media-card:hover .mc-img img { transform: scale(1.05); }
.mc-tag {
  position: absolute; left: 18px; top: 18px;
  background: rgba(11,42,91,.9); color: #fff;
  font-size: 12.5px; font-weight: 600; padding: 7px 16px; border-radius: var(--r-pill);
}
.media-card .mc-body { padding: 30px 30px 34px; display: flex; flex-direction: column; flex: 1; }
.media-card .mc-meta { color: var(--orange); font-size: 13.5px; font-weight: 600; margin-bottom: 10px; }
.media-card h3 { font-size: 20.5px; margin-bottom: 10px; }
.media-card p { font-size: 15px; color: var(--body); }
.media-card .btn, .media-card .link-arrow { margin-top: auto; padding-top: 22px; align-self: flex-start; }

/* ---------- 交替图文行 ---------- */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.feature-row + .feature-row { margin-top: 100px; }
.feature-row.flip .fr-media { order: 2; }
.fr-media { position: relative; }
.fr-media img { border-radius: var(--r-card); box-shadow: var(--shadow); width: 100%; }
.fr-media .float-badge {
  position: absolute; right: -18px; bottom: 30px;
  background: var(--yellow); color: #3a2200;
  border-radius: 22px; padding: 18px 24px;
  font-weight: 800; font-size: 15px; line-height: 1.35;
  box-shadow: var(--shadow); text-align: center;
}
.fr-media .float-badge.blue { background: var(--navy); color: #fff; }
.fr-body h2 { font-size: clamp(27px, 2.8vw, 36px); }
.fr-body h3 { font-size: clamp(25px, 2.6vw, 32px); }
.fr-body .lead { margin: 18px 0 24px; font-size: 17px; }
.check-list { display: grid; gap: 14px; margin-top: 24px; }
.check-list li { display: flex; gap: 13px; font-size: 16px; color: var(--ink); font-weight: 600; }
.check-list li p, .check-list li small { font-weight: 500; color: var(--body); font-size: 14.5px; }
.check-list .tick {
  width: 26px; height: 26px; border-radius: 50%; flex: none; margin-top: 3px;
  background: rgba(190,27,46,.12); color: var(--red);
  display: grid; place-items: center;
}
.check-list.blue .tick { background: rgba(47,125,224,.14); color: var(--blue); }
.fr-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 标签组 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag-cloud span {
  border: 1px solid var(--line); background: #fff; color: var(--navy);
  border-radius: var(--r-pill); padding: 9px 18px; font-size: 14px; font-weight: 600;
}

/* ---------- 产品大卡（深蓝带图） ---------- */
.product-hero-card {
  border-radius: var(--r-card); overflow: hidden;
  display: grid; grid-template-columns: 1.05fr .95fr;
  background: linear-gradient(150deg, var(--red) 0%, #b32c20 60%, var(--navy-deep) 100%);
  color: #fff; box-shadow: var(--shadow);
}
.product-hero-card .ph-text { padding: 56px 52px; align-self: center; }
.product-hero-card .ph-text .kicker { font-size: 14px; font-weight: 700; letter-spacing: .12em; color: var(--yellow); }
.product-hero-card h3 { color: #fff; font-size: clamp(26px, 2.6vw, 34px); margin: 14px 0; }
.product-hero-card p { color: rgba(255,255,255,.88); font-size: 16px; }
.product-hero-card .ph-img { min-height: 340px; }
.product-hero-card .ph-img img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 流程步骤 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.flow-step {
  background: #fff; border: 1px solid #f0ebe4; border-radius: var(--r-card-sm);
  padding: 30px 26px; position: relative;
}
.flow-step::before {
  counter-increment: step; content: "0" counter(step);
  font-size: 15px; font-weight: 800; color: var(--orange); letter-spacing: .05em;
}
.flow-step h4 { font-size: 17.5px; margin: 10px 0 8px; }
.flow-step p { font-size: 14px; color: var(--body); }

/* ---------- 时间线 ---------- */
.timeline { position: relative; max-width: 920px; margin: 0 auto; padding-left: 38px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(var(--blue), var(--red) 60%, var(--orange));
  border-radius: 2px;
}
.tl-item { position: relative; padding-bottom: 54px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -38px; top: 6px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 4px solid var(--blue);
  box-shadow: 0 0 0 5px rgba(47,125,224,.12);
}
.tl-item.red::before { border-color: var(--red); box-shadow: 0 0 0 5px rgba(190,27,46,.12); }
.tl-item.orange::before { border-color: var(--orange); box-shadow: 0 0 0 5px rgba(255,111,0,.12); }
.tl-year { display: inline-block; font-size: 15px; font-weight: 800; color: var(--navy); background: rgba(47,125,224,.1); border-radius: var(--r-pill); padding: 5px 16px; margin-bottom: 12px; }
.tl-item.red .tl-year { color: var(--red); background: rgba(190,27,46,.1); }
.tl-item.orange .tl-year { color: var(--orange); background: rgba(255,111,0,.1); }
.tl-item h3 { font-size: 22px; margin-bottom: 10px; }
.tl-item p { font-size: 15.5px; margin-bottom: 8px; }

/* ---------- 价值三列 ---------- */
.value-card { text-align: left; background: #fff; border-radius: var(--r-card); padding: 36px 32px; border: 1px solid #f0ebe4; }
.value-card .v-num { font-size: 15px; font-weight: 800; color: var(--orange); }
.value-card h4 { font-size: 19px; margin: 10px 0 10px; }
.value-card p { font-size: 15px; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--navy) 0%, var(--navy-deep) 100%);
  border-radius: 44px;
  padding: 78px 60px;
  text-align: center; color: #fff;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(500px 260px at 85% 0%, rgba(255,197,61,.18), transparent 60%),
              radial-gradient(420px 260px at 5% 100%, rgba(47,125,224,.3), transparent 60%);
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { color: #fff; font-size: clamp(28px, 3.4vw, 42px); }
.cta-band p { color: rgba(255,255,255,.85); max-width: 620px; margin: 18px auto 36px; font-size: 17.5px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.section .cta-band { margin-top: 0; }

/* ---------- 轮播 ---------- */
.carousel { position: relative; }
.carousel-viewport { overflow: hidden; }
.carousel-track { display: flex; gap: 26px; transition: transform .45s cubic-bezier(.4,0,.2,1); }
.carousel-track > * { flex: 0 0 calc((100% - 52px) / 3); min-width: 0; }
.carousel-nav { display: flex; gap: 12px; justify-content: flex-end; margin-top: 34px; }
.carousel-btn {
  width: 60px; height: 60px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--peach); color: var(--ink);
  transition: background .25s ease, transform .25s ease;
}
.carousel-btn:hover { background: var(--yellow); transform: translateY(-2px); }
.carousel-btn:disabled { background: #e9eef5; color: #a9b4c4; cursor: not-allowed; transform: none; }

/* ---------- 案例卡 ---------- */
.case-card { background: #fff; border-radius: var(--r-card-sm); padding: 30px 28px; border: 1px solid #f0ebe4; height: 100%; transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.case-year { display: inline-flex; align-self: flex-start; background: rgba(190,27,46,.1); color: var(--red); font-weight: 800; font-size: 13.5px; padding: 6px 15px; border-radius: var(--r-pill); margin-bottom: 16px; }
.case-card h3 { font-size: 18.5px; margin-bottom: 10px; }
.case-card p { font-size: 14.5px; }
.case-card ul { margin-top: 14px; display: grid; gap: 7px; }
.case-card li { position: relative; padding-left: 18px; font-size: 14px; color: var(--body); }
.case-card li::before { content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }

/* ---------- 公众号/洞察 ---------- */
.column-card { border-radius: var(--r-card); padding: 40px 36px; color: #fff; min-height: 300px; display: flex; flex-direction: column; }
.column-card.navy { background: linear-gradient(160deg, var(--navy), var(--navy-deep)); }
.column-card.red { background: linear-gradient(160deg, var(--red), #a92c20); }
.column-card.blue { background: linear-gradient(160deg, var(--blue), #1f5cb0); }
.column-card .cc-icon { width: 54px; height: 54px; border-radius: 16px; background: rgba(255,255,255,.16); display: grid; place-items: center; margin-bottom: 22px; }
.column-card h3 { color: #fff; font-size: 23px; margin-bottom: 10px; }
.column-card p { color: rgba(255,255,255,.85); font-size: 15px; }
.column-card ul { margin-top: 18px; display: grid; gap: 8px; }
.column-card li { font-size: 14.5px; color: rgba(255,255,255,.9); padding-left: 16px; position: relative; }
.column-card li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--yellow); }

/* ---------- 加入我们 ---------- */
.value-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.value-strip .vbox { background: #fff; border-radius: var(--r-card-sm); padding: 52px 26px; text-align: center; border: 1px solid #f0ebe4; display: flex; align-items: center; justify-content: center; }
.value-strip .vbox .ve { font-size: 34px; font-weight: 800; color: var(--navy); }
.job-card { display: flex; align-items: center; justify-content: space-between; gap: 24px; background: #fff; border: 1px solid #f0ebe4; border-radius: var(--r-card-sm); padding: 30px 36px; flex-wrap: wrap; }
.job-card h3 { font-size: 20px; }
.job-meta { display: flex; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.job-meta span { background: var(--cream); color: var(--navy); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: var(--r-pill); }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.info-block { display: flex; gap: 18px; padding: 24px 0; border-bottom: 1px dashed var(--line); }
.info-block:last-child { border-bottom: 0; }
.info-block .ib-ic { width: 52px; height: 52px; border-radius: 16px; background: rgba(47,125,224,.12); color: var(--navy); display: grid; place-items: center; flex: none; }
.info-block h3 { font-size: 18px; margin-bottom: 4px; }
.info-block p, .info-block a { font-size: 16px; color: var(--body); }
.info-block a:hover { color: var(--red); }
.form-card { background: #fff; border-radius: var(--r-card); padding: 44px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; border: 1.5px solid #e4e9f0; border-radius: 16px;
  padding: 14px 18px; font: inherit; font-size: 15.5px; color: var(--ink);
  background: #fafbfd; transition: border-color .2s, background .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--blue); background: #fff;
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }
.map-card { margin-top: 56px; border-radius: var(--r-card); overflow: hidden; position: relative; box-shadow: var(--shadow); }
.map-card img { width: 100%; height: 380px; object-fit: cover; }
.map-overlay {
  position: absolute; left: 34px; bottom: 34px; right: 34px;
  background: rgba(255,255,255,.96); border-radius: 24px; padding: 24px 30px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.map-overlay h3 { font-size: 19px; }
.map-overlay p { font-size: 14.5px; color: var(--body); }

/* 认证资质 */
.cert-strip { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cert-strip li {
  background: #fff; border: 1px solid #e4e9f0; border-radius: var(--r-pill);
  padding: 12px 26px; font-size: 15px; font-weight: 600; color: var(--navy);
  box-shadow: var(--shadow-soft);
}

/* ---------- 页脚 ---------- */
.site-footer { background: var(--cream); padding: 84px 0 34px; color: var(--body); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 44px; }
.footer-brand .brand { color: var(--navy); margin-bottom: 20px; }
.footer-brand p { font-size: 14.5px; max-width: 300px; }
.footer-qr { margin-top: 22px; display: flex; align-items: center; gap: 14px; }
.qr-box { width: 76px; height: 76px; border-radius: 16px; background: #fff; border: 1px solid var(--line); display: grid; place-items: center; color: var(--navy); }
.footer-qr small { font-size: 13px; color: var(--muted); max-width: 130px; line-height: 1.5; }
.footer-col h4 { font-size: 15px; color: var(--ink); margin-bottom: 18px; letter-spacing: .04em; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { font-size: 15px; color: var(--body); transition: color .2s; }
.footer-col a:hover { color: var(--red); }
.footer-contact li { display: flex; gap: 10px; font-size: 14.5px; margin-bottom: 14px; align-items: flex-start; }
.footer-contact svg { flex: none; margin-top: 4px; color: var(--red); }
.footer-bottom {
  margin-top: 60px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13.5px; color: var(--muted);
}
.footer-bottom a:hover { color: var(--red); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .intro-grid, .feature-row, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .feature-row.flip .fr-media { order: 0; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .carousel-track > * { flex-basis: calc((100% - 26px) / 2); }
  .product-hero-card { grid-template-columns: 1fr; }
  .product-hero-card .ph-img { min-height: 260px; order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .value-strip { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .section { padding: 72px 0; }
  .container { padding: 0 20px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
  .flow { grid-template-columns: 1fr; }
  .carousel-track > * { flex-basis: 100%; }
  .hero { padding-top: 130px; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  .cta-band { padding: 54px 28px; border-radius: 30px; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .brand-text small { display: none; }
  .menu-toggle { padding: 13px 22px; }
  .product-hero-card .ph-text { padding: 38px 30px; }
  .fr-media .float-badge { right: 10px; padding: 14px 18px; }
  .map-overlay { position: static; border-radius: 0; }
  .map-card img { height: 260px; }
  .hero-wave svg { height: 54px; }
  .stat p { max-width: none; }
}