/* ============================================================
   宏石石墨科技有限公司 官网样式
   HONGSHI GRAPHITE — 石墨模具与等静压石墨制品专业制造商
   ============================================================ */

/* ---------- 字体（本地子集化） ---------- */
@font-face{
  font-family:'Noto Sans SC';
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url('../fonts/noto-400.woff2') format('woff2');
}
@font-face{
  font-family:'Noto Sans SC';
  font-style:normal;
  font-weight:500;
  font-display:swap;
  src:url('../fonts/noto-500.woff2') format('woff2');
}
@font-face{
  font-family:'Noto Sans SC';
  font-style:normal;
  font-weight:700;
  font-display:swap;
  src:url('../fonts/noto-700.woff2') format('woff2');
}

/* ---------- 设计令牌 ---------- */
:root{
  --ink:#171C22;
  --ink-soft:#222A33;
  --ink-line:#313B46;
  --paper:#F4F6F7;
  --white:#FFFFFF;
  --line:#E2E6EA;
  --accent:#E8590C;
  --accent-deep:#C74606;
  --accent-soft:#FDEBE0;
  --text:#3A4149;
  --muted:#66717D;
  --radius:8px;
  --radius-lg:12px;
  --container:1200px;
  --shadow:0 12px 32px rgba(23,28,34,.10);
  --shadow-sm:0 4px 14px rgba(23,28,34,.08);
  --font:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
}

/* ---------- 基础 ---------- */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--white);
  font-size:16px;
  line-height:1.75;
  -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;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent);color:#fff;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section.paper{background:var(--paper);}
.section.dark{background:var(--ink);color:#D7DCE1;}

.sec-head{max-width:720px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:500;color:var(--accent);
  letter-spacing:.14em;margin-bottom:14px;
}
.sec-eyebrow::before{content:'';width:26px;height:2px;background:var(--accent);}
.sec-head.center .sec-eyebrow::after{content:'';width:26px;height:2px;background:var(--accent);}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--ink);line-height:1.35;}
.section.dark .sec-title{color:#fff;}
.sec-desc{margin-top:14px;font-size:15.5px;color:var(--muted);}
.section.dark .sec-desc{color:#9AA5AF;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--radius);
  font-size:15px;font-weight:500;line-height:1.2;
  transition:background .2s,border-color .2s,color .2s,transform .2s;
}
.btn svg{width:16px;height:16px;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--accent-soft);color:var(--accent-deep);}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- 顶部栏 ---------- */
.topbar{background:var(--ink);color:#AEB7C0;font-size:13px;}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:16px;}
.topbar a:hover{color:#fff;}
.topbar-contact{display:inline-flex;align-items:center;gap:8px;}
.topbar-contact svg{width:14px;height:14px;color:var(--accent);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s;
}
.site-header.scrolled{box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:46px;height:46px;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.brand-mark img{width:100%;height:100%;object-fit:cover;}
.brand-name{display:flex;flex-direction:column;line-height:1.25;}
.brand-name strong{font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.brand-name small{font-size:10.5px;color:var(--muted);letter-spacing:.22em;margin-top:3px;}

.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  padding:9px 16px;border-radius:6px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:color .2s,background .2s;
}
.main-nav a:hover{color:var(--accent);background:var(--paper);}
.main-nav a.active{color:var(--accent-deep);background:var(--accent-soft);}
.nav-toggle{display:none;width:42px;height:42px;flex-direction:column;justify-content:center;gap:5px;padding:8px;}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,19,24,.94) 0%,rgba(15,19,24,.72) 42%,rgba(15,19,24,.25) 100%);
}
.hero-inner{position:relative;min-height:560px;display:flex;flex-direction:column;justify-content:center;padding:96px 0 84px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;font-weight:500;color:#FFB98A;letter-spacing:.16em;margin-bottom:20px;
}
.hero-eyebrow::before{content:'';width:30px;height:2px;background:var(--accent);}
.hero-title{
  font-size:clamp(32px,4.6vw,54px);font-weight:700;line-height:1.28;
  max-width:640px;letter-spacing:.01em;
}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:22px;max-width:560px;font-size:16.5px;color:#C6CDD4;line-height:1.9;}
.hero-actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-meta{
  margin-top:52px;display:flex;gap:44px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.16);padding-top:26px;
}
.hero-meta b{display:block;font-size:26px;font-weight:700;color:#fff;line-height:1.2;}
.hero-meta b i{font-style:normal;color:var(--accent);}
.hero-meta span{font-size:13px;color:#9AA5AF;}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split.flip .split-media{order:2;}
.split-media{position:relative;}
.media-frame{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(23,28,34,.88);color:#fff;
  padding:10px 16px;border-radius:8px;font-size:13.5px;
  display:flex;align-items:center;gap:8px;backdrop-filter:blur(4px);
}
.media-tag svg{width:15px;height:15px;color:var(--accent);}
.split-body h3{font-size:24px;font-weight:700;color:var(--ink);line-height:1.5;margin-bottom:18px;}
.split-body p{font-size:15.5px;margin-bottom:14px;}
.split-body p:last-child{margin-bottom:0;}
.list-check{margin-top:18px;}
.list-check li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:15px;}
.list-check svg{width:17px;height:17px;color:var(--accent);flex-shrink:0;margin-top:4px;}

/* ---------- 数据带 ---------- */
.stat-band{background:var(--ink);color:#fff;}
.stat-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:52px 0;}
.stat-item{text-align:center;border-left:1px solid rgba(255,255,255,.12);padding:8px 12px;}
.stat-item:first-child{border-left:none;}
.stat-item b{font-size:clamp(28px,3.4vw,40px);font-weight:700;color:#fff;line-height:1.2;}
.stat-item b i{font-style:normal;color:var(--accent);}
.stat-item span{display:block;margin-top:6px;font-size:13.5px;color:#9AA5AF;}

/* ---------- 产品卡片 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.prod-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s;
  display:flex;flex-direction:column;
}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#D5DADF;}
.prod-card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--paper);}
.prod-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.prod-card:hover .thumb img{transform:scale(1.05);}
.prod-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.prod-card h3{font-size:18px;font-weight:700;color:var(--ink);}
.prod-card .tag{display:inline-block;margin-top:10px;font-size:12.5px;color:var(--accent-deep);background:var(--accent-soft);padding:3px 10px;border-radius:4px;}
.prod-card p{font-size:14px;color:var(--muted);margin-top:10px;flex:1;}
.prod-card .more{margin-top:14px;font-size:14px;font-weight:500;color:var(--ink);display:inline-flex;align-items:center;gap:6px;}
.prod-card .more:hover{color:var(--accent);}
.prod-card .more svg{width:14px;height:14px;}

/* ---------- 应用条 ---------- */
.app-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.app-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 14px;text-align:center;transition:border-color .2s,transform .2s,box-shadow .2s;
}
.app-item:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.app-item svg{width:30px;height:30px;color:var(--accent);margin:0 auto 10px;}
.app-item span{display:block;font-size:14px;font-weight:500;color:var(--ink);}

/* ---------- 优势卡片 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;transition:transform .25s,box-shadow .25s;
}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.feat-card .icon{
  width:52px;height:52px;border-radius:12px;
  background:var(--accent-soft);color:var(--accent-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.feat-card .icon svg{width:26px;height:26px;}
.feat-card h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.feat-card p{font-size:14px;color:var(--muted);}

/* ---------- 新闻卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:transform .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.news-card .thumb{aspect-ratio:3/2;overflow:hidden;background:var(--paper);}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.news-card:hover .thumb img{transform:scale(1.05);}
.news-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-card .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:10px;}
.news-card .meta .cat{color:var(--accent-deep);background:var(--accent-soft);padding:2px 9px;border-radius:4px;}
.news-card h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.55;flex:1;}
.news-card h3 a:hover{color:var(--accent);}
.news-card p{font-size:13.5px;color:var(--muted);margin-top:10px;}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);position:relative;overflow:hidden;}
.cta-band::before{
  content:'';position:absolute;inset:0;opacity:.5;
  background:linear-gradient(120deg,rgba(232,89,12,.22),transparent 55%);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:64px 0;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);color:#fff;font-weight:700;line-height:1.5;}
.cta-inner p{color:#AAB4BD;margin-top:8px;font-size:15px;}

/* ---------- 页头横幅（内页） ---------- */
.page-banner{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.page-banner .pb-bg{position:absolute;inset:0;}
.page-banner .pb-bg img{width:100%;height:100%;object-fit:cover;opacity:.32;}
.page-banner .pb-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,19,24,.62),rgba(15,19,24,.9));}
.pb-inner{position:relative;padding:76px 0 66px;}
.pb-inner h1{font-size:clamp(28px,3.4vw,40px);font-weight:700;line-height:1.3;}
.pb-inner p{margin-top:12px;font-size:15.5px;color:#B7C0C9;max-width:640px;}
.crumbs{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:13.5px;color:#8E99A4;}
.crumbs a:hover{color:#fff;}
.crumbs svg{width:12px;height:12px;}
.crumbs .cur{color:#FFB98A;}

/* ---------- 关于：时间轴 ---------- */
.timeline{display:grid;grid-template-columns:120px 56px 1fr;gap:0;row-gap:0;}
.tl-item{display:contents;}
.tl-time{text-align:right;padding:0 0 44px;font-size:15px;font-weight:700;color:var(--accent-deep);line-height:1.4;}
.tl-axis{position:relative;display:flex;justify-content:center;}
.tl-axis::before{content:'';position:absolute;top:4px;bottom:4px;width:2px;background:var(--line);}
.tl-dot{
  position:relative;z-index:1;margin-top:2px;align-self:flex-start;
  width:16px;height:16px;border-radius:50%;background:#fff;
  border:4px solid var(--accent);box-shadow:0 0 0 4px var(--accent-soft);
}
.tl-body{padding:0 0 44px 26px;}
.tl-body h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.tl-body p{font-size:14px;color:var(--muted);max-width:560px;}
.tl-item:last-child .tl-time,.tl-item:last-child .tl-body{padding-bottom:0;}
.tl-item:last-child .tl-axis::before{display:none;}

/* ---------- 资质卡片 ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.cert-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 22px;text-align:center;transition:transform .25s,box-shadow .25s;
}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.cert-card .icon{width:52px;height:52px;margin:0 auto 16px;color:var(--accent);}
.cert-card .icon svg{width:52px;height:52px;}
.cert-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.cert-card p{font-size:13px;color:var(--muted);}

/* ---------- 画廊 ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.gallery-grid .g-item{border-radius:var(--radius-lg);overflow:hidden;position:relative;aspect-ratio:4/3;}
.gallery-grid .g-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.gallery-grid .g-item:hover img{transform:scale(1.06);}
.gallery-grid .g-item figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:34px 18px 14px;
  background:linear-gradient(transparent,rgba(15,19,24,.82));
  color:#fff;font-size:14px;font-weight:500;
}

/* ---------- 产品区块 ---------- */
.prod-block{
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;
  padding:56px 0;border-bottom:1px solid var(--line);
}
.prod-block:first-of-type{padding-top:0;}
.prod-block:last-child{border-bottom:none;}
.prod-block .pm{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.prod-block .pm img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.prod-block h2{font-size:24px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.prod-block .en{font-size:12.5px;color:var(--accent-deep);letter-spacing:.14em;margin-bottom:14px;font-weight:500;}
.prod-block .desc{font-size:15px;margin-bottom:18px;}
.spec-table{width:100%;border-collapse:collapse;font-size:14px;}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:9px 14px;text-align:left;vertical-align:top;}
.spec-table th{background:var(--paper);color:var(--ink);font-weight:500;white-space:nowrap;width:130px;}
.table-wrap{overflow-x:auto;}
.prod-anchor{scroll-margin-top:120px;}

/* ---------- 应用卡片 ---------- */
.app-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.app-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:3/2.4;display:block;color:#fff;
}
.app-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.app-card:hover img{transform:scale(1.06);}
.app-card .mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,19,24,.08) 35%,rgba(15,19,24,.9) 100%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:22px;
}
.app-card h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.app-card p{font-size:13.5px;color:#C9D1D8;line-height:1.7;}
.app-card .go{
  margin-top:12px;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:#FFB98A;
}
.app-card .go svg{width:13px;height:13px;}

/* ---------- 新闻列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:22px;}
.news-row{
  display:grid;grid-template-columns:300px 1fr;gap:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:transform .25s,box-shadow .25s;
}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.news-row .thumb{aspect-ratio:3/2;overflow:hidden;}
.news-row .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.news-row:hover .thumb img{transform:scale(1.05);}
.news-row .info{padding:24px 26px;display:flex;flex-direction:column;justify-content:center;}
.news-row .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:10px;}
.news-row .meta .cat{color:var(--accent-deep);background:var(--accent-soft);padding:2px 9px;border-radius:4px;}
.news-row h3{font-size:18px;font-weight:700;color:var(--ink);}
.news-row h3 a:hover{color:var(--accent);}
.news-row p{font-size:14px;color:var(--muted);margin-top:8px;}

/* ---------- 文章页 ---------- */
.article{max-width:820px;margin:0 auto;}
.article-head{margin-bottom:34px;padding-bottom:26px;border-bottom:1px solid var(--line);}
.article-head h1{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ink);line-height:1.45;}
.article-head .meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:13.5px;color:var(--muted);flex-wrap:wrap;}
.article-head .meta .cat{color:var(--accent-deep);background:var(--accent-soft);padding:2px 10px;border-radius:4px;}
.article-cover{border-radius:var(--radius-lg);overflow:hidden;margin-bottom:30px;box-shadow:var(--shadow-sm);}
.article-body{font-size:16px;line-height:2;}
.article-body p{margin-bottom:18px;}
.article-body h2{font-size:21px;font-weight:700;color:var(--ink);margin:30px 0 14px;padding-left:12px;border-left:4px solid var(--accent);}
.article-body ul,.article-body ol{margin:0 0 18px 1.4em;}
.article-body li{margin-bottom:8px;list-style:disc;}
.article-body figure{margin:26px 0;}
.article-body figure img{border-radius:var(--radius-lg);}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);font-size:14.5px;}
.article-nav a{color:var(--ink);font-weight:500;}
.article-nav a:hover{color:var(--accent);}
.article-nav .next{margin-left:auto;text-align:right;}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 24px;transition:transform .25s,box-shadow .25s;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.info-card .icon{width:46px;height:46px;border-radius:10px;background:var(--accent-soft);color:var(--accent-deep);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.info-card .icon svg{width:22px;height:22px;}
.info-card h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.info-card p{font-size:14px;color:var(--muted);line-height:1.9;word-break:break-all;}
.info-card a:hover{color:var(--accent);}
.visit-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:grid;grid-template-columns:5fr 7fr;
}
.visit-box .vb-media{min-height:260px;}
.visit-box .vb-media img{width:100%;height:100%;object-fit:cover;}
.visit-box .vb-body{padding:32px 34px;}
.visit-box h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:16px;}
.visit-box li{display:flex;gap:10px;margin-bottom:12px;font-size:14.5px;color:var(--text);}
.visit-box li svg{width:16px;height:16px;color:var(--accent);flex-shrink:0;margin-top:4px;}
.visit-box .map-note{
  margin-top:18px;font-size:13px;color:var(--muted);
  border-left:3px solid var(--accent);background:var(--paper);padding:10px 14px;border-radius:0 6px 6px 0;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#AAB4BD;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:2.2fr 1fr 1.4fr 1.6fr;gap:40px;
  padding:64px 0 48px;
}
.footer-brand img{width:44px;height:44px;border-radius:8px;object-fit:cover;margin-bottom:16px;}
.footer-brand strong{display:block;color:#fff;font-size:18px;letter-spacing:.04em;margin-bottom:10px;}
.footer-brand p{font-size:13.5px;line-height:1.9;color:#8E99A4;max-width:300px;}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:#AAB4BD;transition:color .2s;}
.footer-col ul a:hover{color:var(--accent);}
.footer-col.contact p{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-bottom:12px;}
.footer-col.contact svg{width:15px;height:15px;color:var(--accent);flex-shrink:0;margin-top:5px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;color:#7E8892;}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;}

/* ---------- 回到顶部 ---------- */
.backtop{
  position:fixed;right:26px;bottom:26px;z-index:90;
  width:44px;height:44px;border-radius:10px;
  background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s,background .2s;
  box-shadow:var(--shadow-sm);
}
.backtop.show{opacity:1;visibility:visible;transform:none;}
.backtop:hover{background:var(--accent-deep);}
.backtop svg{width:18px;height:18px;}

/* ---------- 动效（克制） ---------- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
  .reveal.in{opacity:1;transform:none;}
}

/* ---------- 产品页子导航 ---------- */
.prod-subnav{
  position:sticky;top:76px;z-index:60;
  background:rgba(255,255,255,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.prod-subnav .inner{
  display:flex;gap:8px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;
}
.prod-subnav .inner::-webkit-scrollbar{display:none;}
.prod-subnav a{
  flex-shrink:0;padding:8px 16px;border-radius:20px;
  border:1px solid var(--line);font-size:14px;color:var(--text);
  transition:border-color .2s,color .2s,background .2s;
}
.prod-subnav a:hover{color:var(--accent-deep);border-color:var(--accent);}
.prod-subnav a.active{background:var(--accent);border-color:var(--accent);color:#fff;}

/* ---------- 产品区块交替 ---------- */
.prod-block.flip{grid-template-columns:7fr 5fr;}
.prod-block.flip .pm{order:2;}
.prod-block .pm{box-shadow:var(--shadow-sm);}

/* ---------- 定制流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:30px 24px 26px;
}
.flow-step .num{
  font-size:32px;font-weight:700;color:transparent;
  -webkit-text-stroke:1.5px var(--accent);
  line-height:1;margin-bottom:14px;
}
.flow-step h3{font-size:16.5px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.flow-step p{font-size:13.5px;color:var(--muted);}
@media (max-width:1024px){
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .prod-block.flip{grid-template-columns:1fr;}
  .prod-block.flip .pm{order:0;}
}
@media (max-width:560px){
  .flow-grid{grid-template-columns:1fr;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .app-strip{grid-template-columns:repeat(3,1fr);}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .cert-grid{grid-template-columns:repeat(2,1fr);}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .stat-inner{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3){border-left:none;}
  .contact-grid{grid-template-columns:repeat(2,1fr);}
  .visit-box{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:12px 20px 20px;display:none;
    box-shadow:var(--shadow-sm);
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:13px 14px;font-size:16px;}
  .split,.split.flip{grid-template-columns:1fr;gap:34px;}
  .split.flip .split-media{order:0;}
  .prod-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .app-card-grid{grid-template-columns:repeat(2,1fr);}
  .prod-block{grid-template-columns:1fr;gap:26px;}
  .news-row{grid-template-columns:1fr;}
  .news-row .thumb{aspect-ratio:16/7;}
}
@media (max-width:560px){
  .section{padding:60px 0;}
  .topbar-inner{justify-content:center;}
  .topbar-inner .tagline{display:none;}
  .prod-grid,.app-card-grid{grid-template-columns:1fr;}
  .app-strip{grid-template-columns:repeat(2,1fr);}
  .feat-grid,.cert-grid,.gallery-grid,.contact-grid{grid-template-columns:1fr;}
  .stat-inner{grid-template-columns:1fr 1fr;gap:18px;}
  .stat-item{padding:10px 6px;}
  .hero-inner{min-height:520px;padding:72px 0 60px;}
  .timeline{grid-template-columns:78px 40px 1fr;}
  .tl-body{padding-left:18px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-inner{padding:48px 0;text-align:center;justify-content:center;}
  .backtop{right:16px;bottom:16px;}
}