/* ==========================================================================
   重庆润隆纳米建材有限公司 · 官网设计系统
   Runlong Nano Building Materials — Design System
   主色：深松绿 / 石灰绿 · 暖石纸底 · 现代企业级视觉
   ========================================================================== */

:root {
  /* 色彩 */
  --paper:        #f4f1e9;
  --paper-2:      #ede9dd;
  --white:        #ffffff;
  --ink:          #142019;
  --ink-soft:     #3d4a42;
  --muted:        #6f7c73;
  --line:         #e2dccb;

  --green:        #0c3b2e;   /* 主色 · 深松绿 */
  --green-2:      #12503e;   /* 主色 · 次深 */
  --green-3:      #1b6b50;   /* 主色 · 亮 */
  --green-ink:    #06281f;   /* 最深 · 页脚/深底 */
  --lime:         #a6c33c;   /* 强调 · 石灰绿 */
  --lime-deep:    #86a325;
  --lime-tint:    #eef3d5;
  --gold:         #c8a24b;   /* 点缀 · 金 */

  /* 排版 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", "Segoe UI", system-ui, -apple-system, sans-serif;

  /* 尺寸 */
  --max: 1240px;
  --header-h: 76px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(20,32,25,.05), 0 1px 3px rgba(20,32,25,.06);
  --shadow:    0 8px 24px rgba(20,32,25,.08), 0 2px 6px rgba(20,32,25,.05);
  --shadow-lg: 0 20px 50px rgba(20,32,25,.14), 0 6px 16px rgba(20,32,25,.08);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body::before {
  /* 极淡的暖色颗粒感 */
  content: "";
  position: fixed; inset: 0;
  background-image: radial-gradient(rgba(12,59,46,.035) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
  z-index: 0;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* 顶部滚动进度条 */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--lime), var(--green-3)); z-index: 3000; transition: width .1s linear; }

/* ---------- 通用文字工具 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: .24em; text-transform: uppercase;
  color: var(--green-3);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--lime); border-radius: 2px; }

.section-head { max-width: 760px; margin: 0 auto 44px; text-align: center; }
.section-head.left { margin: 0 0 34px; text-align: left; }
.section-head .title { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -.02em; line-height: 1.25; margin: 14px 0 12px; }
.section-head .sub { color: var(--muted); font-size: 15px; }
.section-head.left .title { font-size: clamp(24px, 2.6vw, 32px); }

/* ---------- 顶栏 Topbar ---------- */
.topbar { background: var(--green-ink); color: rgba(255,255,255,.86); font-size: 13px; position: relative; z-index: 2000; }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 40px; }
.topbar__tel { display: flex; align-items: center; gap: 9px; font-weight: 500; letter-spacing: .02em; }
.topbar__tel .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 0 rgba(166,195,60,.5); animation: pulse 2s infinite; }
.topbar__links { display: flex; align-items: center; gap: 2px; }
.topbar__links a { color: rgba(255,255,255,.72); padding: 4px 12px; border-radius: 20px; transition: .25s var(--ease); }
.topbar__links a:hover { color: #fff; background: rgba(255,255,255,.1); }
.topbar__links .sep { width: 1px; height: 14px; background: rgba(255,255,255,.22); }

@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(166,195,60,.5); } 70% { box-shadow: 0 0 0 7px rgba(166,195,60,0); } 100% { box-shadow: 0 0 0 0 rgba(166,195,60,0); } }

/* ---------- 头部 Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 1900;
  background: rgba(244,241,233,.86);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 30px rgba(20,32,25,.08); background: rgba(244,241,233,.94); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }

.brand { display: flex; align-items: center; gap: 14px; }
.brand__logo { height: 46px; width: auto; transition: transform .4s var(--ease); }
.brand:hover .brand__logo { transform: scale(1.05); }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 19px; font-weight: 800; letter-spacing: -.01em; color: var(--green); }
.brand__text small { font-size: 9.5px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }

/* 主导航 */
.main-nav { display: flex; align-items: center; }
.main-nav__list { display: flex; align-items: center; gap: 2px; }
.main-nav__list > li { position: relative; }
.main-nav__list > li > a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 15px; font-size: 15px; font-weight: 600; color: var(--ink-soft);
  border-radius: 10px; position: relative; transition: color .25s var(--ease), background .25s var(--ease);
}
.main-nav__list > li > a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 4px; height: 2px;
  background: var(--lime); border-radius: 2px; transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.main-nav__list > li > a:hover, .main-nav__list > li > a.is-active { color: var(--green); }
.main-nav__list > li > a:hover::after, .main-nav__list > li > a.is-active::after { transform: scaleX(1); }
.main-nav__list .caret { font-size: 9px; color: var(--muted); transition: transform .3s var(--ease); }

/* 下拉 */
.dropdown { position: absolute; top: calc(100% + 6px); left: 0; min-width: 208px; padding: 8px;
  background: var(--white); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(10px); transition: .28s var(--ease); z-index: 50; }
.dropdown a { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-radius: 9px;
  font-size: 14px; color: var(--ink-soft); transition: .2s var(--ease); }
.dropdown a::after { content: "→"; opacity: 0; transform: translateX(-4px); transition: .2s var(--ease); font-size: 12px; }
.dropdown a:hover { background: var(--lime-tint); color: var(--green); padding-left: 18px; }
.dropdown a:hover::after { opacity: 1; transform: translateX(0); }
.has-sub:hover .dropdown, .has-sub:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.has-sub:hover > a .caret, .has-sub:focus-within > a .caret { transform: rotate(180deg); }

.header__cta { display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: var(--radius-pill);
  background: var(--green); color: #fff; font-weight: 700; font-size: 14px; transition: .3s var(--ease); box-shadow: var(--shadow-sm); }
.header__cta:hover { background: var(--green-2); transform: translateY(-2px); box-shadow: var(--shadow); }

/* 汉堡按钮 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; align-items: center; justify-content: center;
  background: none; border: none; border-radius: 10px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle.is-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 13px 28px;
  border-radius: var(--radius-pill); font-size: 15px; font-weight: 700; transition: .3s var(--ease); border: none; }
.btn-primary { background: var(--green); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--green-2); transform: translateY(-3px); box-shadow: var(--shadow); }
.btn-accent { background: var(--lime); color: var(--green-ink); box-shadow: var(--shadow-sm); }
.btn-accent:hover { background: #b8d54e; transform: translateY(-3px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; transform: translateY(-3px); }
.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; max-width: var(--max); margin: 26px auto 0; border-radius: 26px; overflow: hidden;
  box-shadow: var(--shadow-lg); height: min(520px, 68vh); min-height: 380px; }
.hero__track { display: flex; height: 100%; transition: transform .65s var(--ease); }
.hero__slide { min-width: 100%; height: 100%; position: relative; }
.hero__slide img { width: 100%; height: 100%; object-fit: cover; }
.hero__slide .shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,40,31,.82) 0%, rgba(6,40,31,.4) 46%, rgba(6,40,31,.05) 78%); }
.hero__caption { position: absolute; left: 0; bottom: 0; padding: 60px; max-width: 600px; color: #fff; }
.hero__caption .tag { display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 20px;
  background: var(--lime); color: var(--green-ink); font-size: 13px; font-weight: 700; letter-spacing: .14em; margin-bottom: 18px; }
.hero__caption h2 { font-size: clamp(26px, 4vw, 46px); font-weight: 800; letter-spacing: -.02em; line-height: 1.18; margin-bottom: 12px; text-shadow: 0 2px 20px rgba(0,0,0,.3); }
.hero__caption p { font-size: 16px; color: rgba(255,255,255,.86); max-width: 460px; }

.hero__arrows { position: absolute; top: 50%; transform: translateY(-50%); left: 0; right: 0; display: flex; justify-content: space-between; padding: 0 18px; pointer-events: none; z-index: 5; }
.hero__arrow { pointer-events: auto; width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.32); color: #fff; font-size: 20px; backdrop-filter: blur(6px);
  transition: .25s var(--ease); }
.hero__arrow:hover { background: var(--lime); color: var(--green-ink); border-color: var(--lime); transform: scale(1.08); }

.hero__dots { position: absolute; bottom: 24px; right: 30px; display: flex; gap: 10px; z-index: 5; }
.hero__dots button { width: 10px; height: 10px; border-radius: 20px; border: none; background: rgba(255,255,255,.45); padding: 0; transition: .3s var(--ease); }
.hero__dots button.is-active { width: 28px; background: var(--lime); }

/* 快速数据带 */
.facts { max-width: var(--max); margin: 26px auto 0; }
.facts__inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow-sm); }
.fact { background: var(--white); padding: 26px 22px; text-align: center; transition: background .3s var(--ease); }
.fact:hover { background: var(--lime-tint); }
.fact__num { font-size: 34px; font-weight: 800; letter-spacing: -.02em; color: var(--green); }
.fact__num em { font-style: normal; font-size: 15px; color: var(--lime-deep); margin-left: 2px; }
.fact__label { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* ---------- 分区 Section ---------- */
.section { padding: 84px 0; }
.section--tight { padding: 56px 0; }
.section--tint { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* 关于我们概览 */
.about-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.about-split__media { position: relative; }
.about-split__media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; height: 420px; object-fit: cover; }
.about-split__media .float-card { position: absolute; right: -16px; bottom: -22px; background: var(--green); color: #fff;
  border-radius: 16px; padding: 20px 26px; box-shadow: var(--shadow-lg); }
.float-card__num { font-size: 34px; font-weight: 800; color: var(--lime); }
.float-card__label { font-size: 13px; opacity: .85; }
.about-split__body p { color: var(--ink-soft); margin-bottom: 14px; }
.about-split__body p.lead { font-size: 17px; color: var(--ink); font-weight: 500; }

/* 特性网格 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 26px;
  transition: .35s var(--ease); position: relative; overflow: hidden; }
.feature::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--lime), var(--green-3)); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.feature:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature:hover::before { transform: scaleX(1); }
.feature__icon { width: 54px; height: 54px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 24px; background: var(--lime-tint); margin-bottom: 18px; }
.feature h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 14px; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.product-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line);
  transition: .4s var(--ease); display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-card__media { position: relative; overflow: hidden; height: 190px; background: var(--paper-2); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.product-card:hover .product-card__media img { transform: scale(1.09); }
.product-card__badge { position: absolute; top: 12px; left: 12px; background: var(--lime); color: var(--green-ink);
  font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 20px; }
.product-card__body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card__body h3 { font-size: 17px; font-weight: 800; }
.product-card__body p { color: var(--muted); font-size: 13px; flex: 1; }
.product-card__more { display: inline-flex; align-items: center; gap: 6px; color: var(--green-3); font-weight: 700; font-size: 13px; }
.product-card__more .arr { transition: transform .3s var(--ease); }
.product-card:hover .product-card__more .arr { transform: translateX(5px); }

/* ---------- 页内 Page Hero（子页头图） ---------- */
.page-hero { position: relative; background: var(--green-ink); color: #fff; overflow: hidden; padding: 74px 0 66px; }
.page-hero::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(900px 400px at 82% 20%, rgba(166,195,60,.16), transparent 60%),
              radial-gradient(700px 380px at 12% 90%, rgba(27,107,80,.45), transparent 60%); }
.page-hero::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px); background-size: 24px 24px; }
.page-hero__inner { position: relative; z-index: 1; }
.page-hero .eyebrow { color: var(--lime); }
.page-hero h1 { font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; letter-spacing: -.02em; margin: 12px 0 6px; }
.page-hero .lead { color: rgba(255,255,255,.72); font-size: 15px; max-width: 620px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.6); margin-top: 22px; }
.breadcrumb a:hover { color: var(--lime); }
.breadcrumb .sep { opacity: .5; }
.breadcrumb .cur { color: #fff; }

/* ---------- 内页布局 ---------- */
.page-body { padding: 44px 0 80px; }
.layout { display: grid; grid-template-columns: 268px 1fr; gap: 28px; align-items: start; }

/* 侧栏 */
.sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: calc(var(--header-h) + 24px); }
.side-nav { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.side-nav__title { display: flex; align-items: center; gap: 10px; padding: 15px 20px; background: var(--green); color: #fff;
  font-weight: 700; font-size: 15px; }
.side-nav__title .ico { font-size: 17px; }
.side-nav ul { padding: 6px 0; }
.side-nav li a { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; color: var(--ink-soft); font-size: 14px; transition: .2s var(--ease); }
.side-nav li a::after { content: "→"; font-size: 12px; opacity: 0; transform: translateX(-5px); transition: .2s var(--ease); }
.side-nav li a:hover { color: var(--green); background: var(--lime-tint); padding-left: 26px; }
.side-nav li a:hover::after { opacity: 1; transform: translateX(0); }
.side-nav li a.is-active { color: var(--green); font-weight: 700; background: var(--lime-tint); box-shadow: inset 3px 0 0 var(--lime); }
.side-nav li a.is-active::after { opacity: 1; transform: translateX(0); }

.side-call { background: linear-gradient(150deg, var(--green), var(--green-ink)); color: #fff; border-radius: var(--radius-lg);
  padding: 26px 22px; text-align: center; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.side-call::after { content: ""; position: absolute; right: -30px; top: -30px; width: 110px; height: 110px; border-radius: 50%; background: rgba(166,195,60,.22); }
.side-call .ico { font-size: 30px; margin-bottom: 8px; }
.side-call .num { font-size: 21px; font-weight: 800; letter-spacing: .02em; }
.side-call .hint { font-size: 12px; opacity: .72; margin-top: 2px; }

/* 内容 */
.content { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.content > h2:first-child { font-size: 24px; font-weight: 800; color: var(--green); margin-bottom: 22px; padding-bottom: 16px;
  border-bottom: 2px solid var(--line); position: relative; }
.content > h2:first-child::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 72px; height: 2px; background: var(--lime); }

/* 正文 */
.prose p { color: var(--ink-soft); margin-bottom: 16px; line-height: 2; }
.prose p:first-of-type::first-letter { font-size: 2.5em; float: left; line-height: 1; padding: 4px 10px 0 0; font-weight: 800; color: var(--green); }
.prose strong { color: var(--green); }

.block-title { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 800; color: var(--green); margin: 34px 0 16px; }
.block-title::before { content: ""; width: 4px; height: 22px; border-radius: 2px; background: linear-gradient(var(--lime), var(--green-3)); }
.block-title .en { font-size: 11px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase; font-weight: 600; }

/* 列表 */
.check-list li { display: flex; gap: 12px; padding: 9px 0; color: var(--ink-soft); border-bottom: 1px dashed var(--line); }
.check-list li:last-child { border-bottom: none; }
.check-list li::before { content: "✓"; flex: 0 0 auto; width: 20px; height: 20px; border-radius: 50%; background: var(--lime-tint);
  color: var(--lime-deep); font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin-top: 4px; }
.check-list strong { color: var(--ink); }

/* 数据卡 */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
.stat-card { text-align: center; padding: 30px 16px; border-radius: var(--radius-lg); background: linear-gradient(160deg, #fff, var(--lime-tint)); border: 1px solid var(--line); transition: .35s var(--ease); }
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--lime); }
.stat-card .num { font-size: 40px; font-weight: 800; letter-spacing: -.02em; color: var(--green); }
.stat-card .num em { font-style: normal; font-size: 16px; color: var(--lime-deep); }
.stat-card .label { color: var(--muted); font-size: 14px; margin-top: 4px; }

/* ---------- 产品详情 ---------- */
.product-detail { display: grid; grid-template-columns: 380px 1fr; gap: 34px; }
.product-detail__img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); height: 340px; }
.product-detail__img img { width: 100%; height: 100%; object-fit: cover; }
.product-detail h3 { font-size: 24px; font-weight: 800; margin-bottom: 14px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tag { padding: 5px 14px; border-radius: 20px; background: var(--lime-tint); color: var(--green-3); border: 1px solid #d7e3a0; font-size: 13px; font-weight: 600; }
.product-detail .desc { color: var(--ink-soft); line-height: 2; margin-bottom: 22px; }

/* 定制/规划盒子 */
.info-box { background: linear-gradient(160deg, #fff, var(--paper)); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; margin: 14px 0; transition: .3s var(--ease); }
.info-box:hover { border-color: var(--lime); box-shadow: var(--shadow); }
.info-box h4 { font-size: 16px; font-weight: 800; color: var(--green); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.info-box h4 .no { width: 24px; height: 24px; border-radius: 7px; background: var(--green); color: #fff; font-size: 13px; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.info-box p { color: var(--ink-soft); }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 36px; }
.timeline::before { content: ""; position: absolute; left: 12px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--lime), var(--green-3)); border-radius: 2px; }
.tl-item { position: relative; margin-bottom: 34px; }
.tl-item:last-child { margin-bottom: 0; }
.tl-item::before { content: ""; position: absolute; left: -31px; top: 6px; width: 15px; height: 15px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--lime); box-shadow: 0 0 0 4px var(--lime-tint); transition: .3s var(--ease); }
.tl-item:hover::before { background: var(--lime); }
.tl-year { display: inline-block; padding: 5px 15px; border-radius: 20px; background: var(--green); color: #fff; font-weight: 800; font-size: 15px; margin-bottom: 12px; }
.tl-body { display: grid; grid-template-columns: 1fr 300px; gap: 22px; align-items: center; }
.tl-text { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; color: var(--ink-soft); line-height: 2; }
.tl-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); height: 180px; }
.tl-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.tl-img:hover img { transform: scale(1.07); }

/* ---------- 荣誉 ---------- */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.honor-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-align: center; transition: .35s var(--ease); }
.honor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--lime); }
.honor-card img { width: 100%; height: 210px; object-fit: contain; background: var(--paper); border-radius: 10px; margin-bottom: 12px; }
.honor-card p { font-size: 13px; font-weight: 600; color: var(--ink-soft); }

/* ---------- 企业文化 ---------- */
.culture-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; margin-bottom: 20px; transition: .3s var(--ease); }
.culture-card:hover { box-shadow: var(--shadow); border-color: var(--lime); transform: translateX(4px); }
.culture-card h3 { font-size: 19px; font-weight: 800; color: var(--green); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.culture-card h3 .ico { width: 40px; height: 40px; border-radius: 11px; background: var(--lime-tint); display: inline-flex; align-items: center; justify-content: center; font-size: 19px; flex: 0 0 auto; }
.culture-card p { color: var(--ink-soft); line-height: 2; }
.culture-card p strong { color: var(--ink); }
.culture-card p + p { margin-top: 8px; }

/* ---------- 联系 / 荣誉条目 ---------- */
.info-list .row { display: flex; gap: 14px; padding: 16px 20px; background: var(--paper); border-radius: var(--radius); margin-bottom: 12px; border-left: 3px solid var(--lime); transition: .3s var(--ease); }
.info-list .row:hover { background: var(--lime-tint); transform: translateX(4px); }
.info-list .row .ico { font-size: 22px; flex: 0 0 auto; }
.info-list .row h3 { font-size: 16px; font-weight: 800; color: var(--green); margin-bottom: 4px; }
.info-list .row p { color: var(--ink-soft); font-size: 14px; }
.info-list .row p strong { color: var(--ink); }

/* 导航路线 */
.route-list li { padding: 13px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 10px; color: var(--ink-soft); transition: .25s var(--ease); }
.route-list li:hover { border-color: var(--lime); background: var(--lime-tint); }
.route-list li strong { color: var(--green); }

/* ---------- 地图 ---------- */
.map-wrap { width: 100%; height: 430px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); margin-top: 22px; }
.map-wrap iframe { width: 100%; height: 100%; border: 0; }

/* ---------- 表单 ---------- */
.form-card { background: linear-gradient(160deg, #fff, var(--paper)); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-weight: 700; font-size: 14px; color: var(--ink); }
.form-field label .req { color: #e4572e; }
.form-field input, .form-field select, .form-field textarea { width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px;
  font-size: 14px; font-family: inherit; background: #fff; color: var(--ink); transition: .25s var(--ease); }
.form-field textarea { min-height: 140px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--lime-deep); box-shadow: 0 0 0 4px rgba(166,195,60,.16); }
.tips { margin-top: 26px; padding: 22px; border: 1px dashed var(--lime-deep); border-radius: var(--radius); background: var(--lime-tint); }
.tips h3 { font-size: 15px; font-weight: 800; color: var(--green); margin-bottom: 10px; }
.tips p { font-size: 13px; color: var(--ink-soft); line-height: 2; }
.tips p strong { color: var(--green); }

/* 空状态 */
.empty { text-align: center; padding: 70px 20px; }
.empty .ico { font-size: 64px; margin-bottom: 18px; opacity: .8; }
.empty h3 { font-size: 20px; font-weight: 800; color: var(--green); margin-bottom: 8px; }
.empty p { color: var(--muted); }

/* ---------- CTA 横幅 ---------- */
.cta-band { position: relative; background: var(--green); color: #fff; border-radius: var(--radius-lg); padding: 46px 52px; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; box-shadow: var(--shadow-lg); }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(600px 260px at 90% 0%, rgba(166,195,60,.25), transparent 60%); }
.cta-band h2 { font-size: 26px; font-weight: 800; letter-spacing: -.01em; position: relative; }
.cta-band p { color: rgba(255,255,255,.78); margin-top: 6px; position: relative; }
.cta-band .btn { position: relative; }

/* ---------- 页脚 ---------- */
.footer { background: var(--green-ink); color: rgba(255,255,255,.78); margin-top: 0; padding: 70px 0 0; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--lime), var(--green-3), var(--gold)); }
.footer::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.04) 1px, transparent 1px); background-size: 28px 28px; pointer-events: none; }
.footer__grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.2fr; gap: 40px; position: relative; z-index: 1; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 800; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 2px; background: var(--lime); border-radius: 2px; }
.footer .brand-line { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer .brand-line img { height: 40px; }
.footer .brand-line b { color: #fff; font-size: 17px; }
.footer p { font-size: 13.5px; line-height: 2; color: rgba(255,255,255,.62); }
.footer__col ul li { margin-bottom: 8px; }
.footer__col ul a { color: rgba(255,255,255,.62); font-size: 13.5px; transition: .2s var(--ease); display: inline-flex; align-items: center; gap: 7px; }
.footer__col ul a::before { content: "→"; color: var(--lime); font-size: 12px; }
.footer__col ul a:hover { color: var(--lime); padding-left: 5px; }
.footer__contact li { display: flex; gap: 10px; font-size: 13.5px; color: rgba(255,255,255,.62); margin-bottom: 12px; line-height: 1.7; }
.footer__contact li .ico { color: var(--lime); flex: 0 0 auto; }
.footer__bottom { margin-top: 46px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.1); text-align: center; font-size: 12.5px; color: rgba(255,255,255,.42); position: relative; z-index: 1; }

/* ---------- 返回顶部 ---------- */
.to-top { position: fixed; right: 26px; bottom: 26px; width: 48px; height: 48px; border-radius: 50%; background: var(--green); color: #fff;
  border: none; font-size: 18px; box-shadow: var(--shadow-lg); opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: .3s var(--ease); z-index: 1500; display: flex; align-items: center; justify-content: center; }
.to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { background: var(--lime); color: var(--green-ink); transform: translateY(-4px); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }

/* 轻提示 toast */
.toast { position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px); background: var(--green); color: #fff;
  padding: 14px 26px; border-radius: 40px; font-size: 14px; font-weight: 600; box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none;
  transition: .35s var(--ease); z-index: 4000; }
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .facts__inner { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .side-call { grid-column: 1 / -1; text-align: left; display: flex; align-items: center; gap: 16px; }
  .about-split { grid-template-columns: 1fr; gap: 40px; }
  .product-detail { grid-template-columns: 1fr; }
  .product-detail__img { height: 280px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 820px) {
  :root { --header-h: 64px; }
  .header__cta { display: none; }
  .nav-toggle { display: flex; }
  .main-nav { position: fixed; top: 0; right: -320px; width: 300px; height: 100vh; background: var(--white); box-shadow: var(--shadow-xl); padding: 90px 22px 30px; flex-direction: column; align-items: stretch; transition: right .4s var(--ease); z-index: 1800; overflow-y: auto; }
  .main-nav.is-open { right: 0; }
  .main-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav__list > li > a { padding: 14px 12px; font-size: 16px; border-radius: 10px; }
  .main-nav__list > li > a::after { display: none; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; min-width: 0; padding: 2px 0 8px 18px; display: none; }
  .has-sub.is-open .dropdown { display: block; }
  .has-sub.is-open > a .caret { transform: rotate(180deg); }
  .nav-overlay { position: fixed; inset: 0; background: rgba(6,40,31,.45); z-index: 1700; opacity: 0; pointer-events: none; transition: .3s var(--ease); }
  .nav-overlay.is-show { opacity: 1; pointer-events: auto; }
  .hero { height: 400px; min-height: 0; margin: 16px 16px 0; border-radius: 20px; }
  .hero__caption { padding: 32px; }
  .hero__caption h2 { font-size: 26px; }
  .section { padding: 60px 0; }
  .stats-grid, .stat-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .tl-body { grid-template-columns: 1fr; }
  .tl-img { order: -1; }
  .content { padding: 26px 20px; }
  .cta-band { padding: 34px 28px; }
}

@media (max-width: 560px) {
  .topbar__links { display: none; }
  .topbar__inner { justify-content: center; }
  .brand__text small { display: none; }
  .brand__text strong { font-size: 16px; }
  .brand__logo { height: 36px; }
  .hero { height: 340px; border-radius: 0; margin: 0; }
  .hero__caption { padding: 22px; }
  .hero__caption h2 { font-size: 21px; }
  .hero__caption p { font-size: 13px; }
  .hero__arrows { display: none; }
  .hero__dots { right: 16px; bottom: 16px; }
  .facts__inner { grid-template-columns: 1fr 1fr; }
  .fact { padding: 18px 10px; }
  .fact__num { font-size: 26px; }
  .feature-grid, .product-grid, .product-grid.cols-3, .honor-grid, .stats-grid, .stat-grid { grid-template-columns: 1fr; }
  .sidebar { grid-template-columns: 1fr; }
  .about-split__media img { height: 260px; }
  .about-split__media .float-card { right: 10px; bottom: -18px; padding: 14px 18px; }
  .float-card__num { font-size: 26px; }
  .page-hero { padding: 52px 0 46px; }
  .content { padding: 22px 16px; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .product-detail__img { height: 220px; }
}