/* ========== 配色方案 ========== */
:root,[data-theme="blue"]{
  --ink:#0a1830; --nav-bg:#0e2a52; --nav-text:#dfe8f5;
  --accent:#ffc400; --accent-d:#e6ac00; --accent-ink:#0a1830;
  --brand:#1467d8; --hero-ov:10,24,48;
  --bg:#f3f6fb; --card:#fff; --line:#e2e8f0; --text:#1b2638; --muted:#66748a;
  --tag-hl-bg:#fff4cc; --tag-hl:#8a6500; --tag-bg:#eaf1fb; --tag:#3b5578;
  --lane:#ffc400;
}
[data-theme="asphalt"]{
  --ink:#111820; --nav-bg:#1b232d; --nav-text:#e6e9ee;
  --accent:#f5c400; --accent-d:#d9a900; --accent-ink:#111820;
  --brand:#0b63ce; --hero-ov:13,18,25;
  --bg:#f3f4f6; --line:#e4e7ec; --text:#1f2733; --muted:#6b7684;
  --tag-bg:#eef2f7; --tag:#47566a; --lane:#f5c400;
}
[data-theme="light"]{
  --ink:#0d2b4e; --nav-bg:#ffffff; --nav-text:#22324a;
  --accent:#1467d8; --accent-d:#0f55b5; --accent-ink:#fff;
  --brand:#1467d8; --hero-ov:8,40,84;
  --bg:#f6f8fb; --line:#e5eaf1; --text:#1b2638; --muted:#6b7a90;
  --tag-hl-bg:#e3eefc; --tag-hl:#1156b0; --tag-bg:#f0f3f7; --tag:#4a5a70;
  --lane:#ffc400;
}
:root{--radius:12px;--wrap:1240px;--ease:cubic-bezier(.22,.61,.36,1)}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:15px;transition:background .4s}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ========== 顶部 ========== */
.topbar{background:var(--ink);color:#9fb0c6;font-size:13px;transition:background .4s}
.topbar .wrap{display:flex;justify-content:space-between;height:36px;align-items:center}
.topbar b{color:var(--lane);font-weight:500}

.head{position:sticky;top:0;z-index:50;background:linear-gradient(135deg,#a5cef9,#f2f2f1);box-shadow:0 1px 0 var(--line);transition:box-shadow .3s}
.head.scrolled{box-shadow:0 6px 24px rgba(10,24,48,.10)}
.head .bar{display:flex;align-items:center;gap:28px;height:88px;transition:height .3s var(--ease)}
.head.scrolled .bar{height:66px}
.logo img{height:54px;width:auto;transition:height .3s var(--ease)}
.head.scrolled .logo img{height:42px}
.search{flex:1;max-width:400px;margin-left:auto;display:flex;border:1.5px solid var(--line);border-radius:999px;overflow:hidden;transition:border-color .2s,box-shadow .2s;background:var(--bg)}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(20,103,216,.12);background:#fff}
.search input{flex:1;min-width:0;border:0;background:transparent;padding:0 18px;font-size:14px;outline:none;height:42px;font-family:inherit}
.search button{border:0;background:transparent;color:var(--brand);padding:0 18px;cursor:pointer;display:grid;place-items:center}
.search svg{width:18px;height:18px}
.cta{background:var(--accent);color:var(--accent-ink);font-weight:600;padding:11px 22px;border-radius:999px;white-space:nowrap;transition:transform .2s,background .2s,box-shadow .2s}
.cta:hover{background:var(--accent-d);transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.15)}
.burger{display:none;width:42px;height:42px;border:0;background:var(--bg);border-radius:10px;cursor:pointer;place-items:center}
.burger span,.burger span::before,.burger span::after{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.3s var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-6px}.burger span::after{top:6px}
.menu-open .burger span{background:transparent}
.menu-open .burger span::before{top:0;transform:rotate(45deg)}
.menu-open .burger span::after{top:0;transform:rotate(-45deg)}

/* 导航 + 流动的标线虚线 */
nav.main{background:var(--nav-bg);transition:background .4s}
nav.main ul{list-style:none;display:flex;justify-content:space-between}
nav.main a{display:block;color:var(--nav-text);padding:0 16px;line-height:52px;font-size:15.5px;position:relative;transition:color .2s}
nav.main a::after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:3px;background:var(--lane);transform:scaleX(0);transition:transform .3s var(--ease)}
nav.main a:hover,nav.main a.on{color:var(--lane)}
[data-theme="light"] nav.main a:hover,[data-theme="light"] nav.main a.on{color:var(--brand)}
nav.main a:hover::after,nav.main a.on::after{transform:scaleX(1)}
.lane{height:4px;background:repeating-linear-gradient(90deg,var(--lane) 0 36px,transparent 36px 60px);background-size:60px 4px;animation:drive 1.6s linear infinite;background-color:var(--nav-bg)}
@keyframes drive{to{background-position:-60px 0}}

/* 移动端抽屉菜单 */
.drawer{position:fixed;inset:0;z-index:60;pointer-events:none}
.drawer .mask{position:absolute;inset:0;background:rgba(5,12,24,.5);opacity:0;transition:opacity .3s}
.drawer .panel{position:absolute;right:0;top:0;bottom:0;width:min(82vw,320px);background:#fff;transform:translateX(100%);transition:transform .35s var(--ease);padding:24px;overflow:auto}
.menu-open .drawer{pointer-events:auto}
.menu-open .drawer .mask{opacity:1}
.menu-open .drawer .panel{transform:none}
.drawer h4{font-size:13px;color:var(--muted);letter-spacing:.1em;margin:6px 0 10px}
.drawer ul{list-style:none;margin-bottom:22px}
.drawer li a{display:flex;justify-content:space-between;padding:13px 4px;border-bottom:1px solid var(--line);font-size:16px}
.drawer li a::after{content:"›";color:var(--muted)}
.drawer .close{position:absolute;right:16px;top:16px;width:36px;height:36px;border:0;border-radius:8px;background:var(--bg);font-size:20px;cursor:pointer}

/* ========== Hero 轮播 ========== */
.hero{position:relative;color:#fff;background:var(--ink);overflow:hidden;min-height:560px;display:flex;align-items:center}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.2s ease}
.slide.on{opacity:1;animation:kenburns 7s ease-out forwards}
@keyframes kenburns{from{transform:scale(1.12)}to{transform:scale(1)}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(var(--hero-ov),.95) 0%,rgba(var(--hero-ov),.80) 42%,rgba(var(--hero-ov),.35) 100%);transition:background .4s}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr 1fr;gap:56px;padding-top:72px;padding-bottom:96px;align-items:center;width:100%}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--lane);font-size:13px;letter-spacing:.18em;text-transform:uppercase;font-weight:600}
.eyebrow::before{content:"";width:28px;height:3px;background:var(--lane)}
.hero h1{font-size:50px;line-height:1.2;margin:18px 0 18px;font-weight:700;letter-spacing:.02em}
.hero h1 em{font-style:normal;color:var(--lane);position:relative}
.hero p.lead{color:#c8d3e2;font-size:17px;max-width:540px}
.hero .btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn.y{background:var(--lane);color:#0a1830}
.btn.y:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,196,0,.35)}
.btn.o{border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn.o:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn .arr{transition:transform .2s}.btn:hover .arr{transform:translateX(4px)}
/* 入场动画 */
.in{opacity:0;transform:translateY(24px);animation:rise .9s var(--ease) forwards}
.d1{animation-delay:.1s}.d2{animation-delay:.25s}.d3{animation-delay:.4s}.d4{animation-delay:.55s}
@keyframes rise{to{opacity:1;transform:none}}

.entries{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.entry{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:var(--radius);padding:22px 20px;transition:transform .3s var(--ease),background .3s,border-color .3s;opacity:0;transform:translateY(24px);animation:rise .8s var(--ease) forwards}
.entry:nth-child(1){animation-delay:.35s}.entry:nth-child(2){animation-delay:.45s}.entry:nth-child(3){animation-delay:.55s}.entry:nth-child(4){animation-delay:.65s}
.entry:hover{background:rgba(255,196,0,.13);border-color:var(--lane);transform:translateY(-4px)}
.entry .ic{width:42px;height:42px;border-radius:10px;background:var(--lane);color:#0a1830;display:grid;place-items:center;margin-bottom:14px;transition:transform .3s var(--ease)}
.entry:hover .ic{transform:rotate(-8deg) scale(1.08)}
.entry .ic svg{width:22px;height:22px}
.entry h3{font-size:17px;margin-bottom:4px}
.entry span{font-size:13px;color:#b3c0d1}
.dots{position:absolute;z-index:3;left:50%;bottom:34px;transform:translateX(-50%);display:flex;gap:8px}
.dots button{width:28px;height:4px;border:0;border-radius:2px;background:rgba(255,255,255,.35);cursor:pointer;overflow:hidden;position:relative;padding:0}
.dots button.on::after{content:"";position:absolute;inset:0;background:var(--lane);animation:fill 6s linear forwards;transform-origin:left}
@keyframes fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
/* 底部路面：中心虚线向前流动 */
.road{position:absolute;z-index:2;left:0;right:0;bottom:0;height:14px;background:repeating-linear-gradient(90deg,#fff 0 40px,transparent 40px 64px);background-size:64px 14px;animation:road 2.4s linear infinite;opacity:.9}
@keyframes road{to{background-position:-64px 0}}

/* 滚动公告 */
.notice{background:#fff;border-bottom:1px solid var(--line)}
.notice .wrap{display:flex;align-items:center;gap:14px;height:52px;font-size:14px}
.notice .lab{flex:none;background:var(--ink);color:var(--lane);font-size:12px;padding:3px 10px;border-radius:4px;font-weight:600}
.ticker{flex:1;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent)}
.ticker .track{display:inline-flex;gap:48px;white-space:nowrap;animation:tick 32s linear infinite}
.ticker:hover .track{animation-play-state:paused}
.ticker a{color:var(--muted)} .ticker a:hover{color:var(--brand)}
@keyframes tick{to{transform:translateX(-50%)}}

/* ========== 区块 ========== */
section{padding:72px 0}
.sec-h{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:30px;gap:16px}
.sec-h h2{font-size:30px;line-height:1.2;position:relative;padding-left:18px}
.sec-h h2::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:6px;background:var(--lane);border-radius:2px}
.sec-h h2 small{display:block;font-size:12px;color:var(--muted);font-weight:500;letter-spacing:.2em;text-transform:uppercase;margin-top:6px}
.more{color:var(--brand);font-size:14px;white-space:nowrap;display:inline-flex;gap:6px;align-items:center}
.more:hover .arr{transform:translateX(4px)} .more .arr{transition:transform .2s}

/* 滚动出现 */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.show{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.stagger.show>*{opacity:1;transform:none}
.stagger.show>*:nth-child(2){transition-delay:.08s}.stagger.show>*:nth-child(3){transition-delay:.16s}.stagger.show>*:nth-child(4){transition-delay:.24s}
.stagger.show>*:nth-child(5){transition-delay:.32s}.stagger.show>*:nth-child(6){transition-delay:.40s}.stagger.show>*:nth-child(7){transition-delay:.48s}.stagger.show>*:nth-child(8){transition-delay:.56s}

/* 三栏资讯 */
.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.col{background:var(--card);border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .3s,transform .3s var(--ease)}
.col:hover{box-shadow:0 16px 36px rgba(10,24,48,.08);transform:translateY(-3px)}
.col-h{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}
.col-h h3{font-size:18px;display:flex;align-items:center;gap:10px}
.col-h h3 i{width:10px;height:10px;border-radius:2px;background:var(--lane);display:inline-block}
.col-h a{font-size:13px;color:var(--muted)} .col-h a:hover{color:var(--brand)}
.col ul{list-style:none;padding:8px 22px 14px}
.col li{border-bottom:1px dashed var(--line)}
.col li:last-child{border:0}
.col li a{display:flex;gap:10px;align-items:flex-start;padding:11px 0;font-size:14.5px;transition:padding .2s}
.col li a:hover{padding-left:6px}
.col li a:hover .t{color:var(--brand)}
.tag{flex:none;font-size:12px;line-height:20px;padding:0 7px;border-radius:4px;background:var(--tag-bg);color:var(--tag);margin-top:1px}
.tag.cn{background:var(--tag-hl-bg);color:var(--tag-hl)}
.t{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .2s}
.lead-item{display:block;padding:20px 22px;background:linear-gradient(135deg,var(--ink),var(--nav-bg));color:#fff;position:relative;overflow:hidden}
[data-theme="light"] .lead-item{background:linear-gradient(135deg,#0d2b4e,#1467d8)}
.lead-item::after{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;border:16px solid rgba(255,196,0,.15);transition:transform .5s var(--ease)}
.lead-item:hover::after{transform:scale(1.3)}
.lead-item .k{font-size:12px;color:var(--lane);letter-spacing:.1em}
.lead-item h4{font-size:16px;margin:6px 0 4px;line-height:1.45;position:relative}
.lead-item p{font-size:13px;color:#b3c0d1}

/* 产品 */
.products{background:#fff}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tabs button{font:inherit;font-size:13.5px;padding:7px 16px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:#fff;cursor:pointer;transition:.2s}
.tabs button:hover{border-color:var(--ink);color:var(--ink)}
.tabs button.on{background:var(--ink);border-color:var(--ink);color:#fff}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.prod{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s,opacity .35s}
.prod:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(10,24,48,.13);border-color:transparent}
.prod.hide{display:none}
.prod.pop{animation:pop .45s var(--ease)}
@keyframes pop{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}
.prod .pic{aspect-ratio:4/3;overflow:hidden;background:#dfe5ec;position:relative}
.prod .pic img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.prod:hover .pic img{transform:scale(1.08)}
.prod .pic::after{content:"查看详情";position:absolute;left:50%;bottom:14px;transform:translate(-50%,12px);background:var(--accent);color:var(--accent-ink);font-size:13px;font-weight:600;padding:6px 16px;border-radius:999px;opacity:0;transition:.3s var(--ease)}
.prod:hover .pic::after{opacity:1;transform:translate(-50%,0)}
.prod .info{padding:14px 16px 16px}
.prod .cat{font-size:12px;color:var(--brand);font-weight:600;letter-spacing:.05em}
.prod h4{font-size:15.5px;margin-top:2px}

/* 原料 + 公众号 */
.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:24px}
.raw{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.raw a{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;display:flex;flex-direction:column;gap:6px;transition:border-color .25s,box-shadow .25s,transform .25s var(--ease);position:relative;overflow:hidden}
.raw a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lane);transform:scaleY(0);transition:transform .3s var(--ease);transform-origin:bottom}
.raw a:hover{box-shadow:0 8px 22px rgba(10,24,48,.07);transform:translateX(3px)}
.raw a:hover::before{transform:scaleY(1)}
.raw .k{font-size:12px;color:var(--muted)}
.raw h4{font-size:15px;line-height:1.45}
.wx{background:var(--ink);color:#fff;border-radius:var(--radius);padding:30px 26px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden}
.wx::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:repeating-linear-gradient(90deg,var(--lane) 0 24px,transparent 24px 40px);background-size:40px 6px;animation:drive 1.2s linear infinite}
.wx img{width:150px;height:150px;border-radius:10px;border:6px solid #fff;margin:16px 0 14px;transition:transform .4s var(--ease)}
.wx:hover img{transform:scale(1.05) rotate(-2deg)}
.wx h3{font-size:18px}
.wx p{font-size:13px;color:#b3c0d1}

/* 友情链接 */
.links{padding:40px 0;border-top:1px solid var(--line);background:#fff}
.links .wrap{display:flex;gap:24px;align-items:flex-start}
.links h3{font-size:15px;white-space:nowrap;padding-top:6px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips a{font-size:13.5px;padding:6px 14px;background:var(--bg);border-radius:999px;color:var(--tag);transition:.2s}
.chips a:hover{background:var(--tag-hl-bg);color:var(--tag-hl)}

/* 页脚 */
footer{background:var(--ink);color:#9fb0c6;font-size:14px;transition:background .4s}
footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-top:52px;padding-bottom:36px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer li{list-style:none;margin-bottom:8px}
footer a{transition:color .2s} footer a:hover{color:var(--lane)}
footer .brand strong{color:#fff;font-size:20px;display:block;margin-bottom:8px}
footer .bottom{border-top:1px solid rgba(255,255,255,.08);text-align:center;padding:18px 24px;font-size:13px}

/* 返回顶部 + 配色切换 */
.fab{position:fixed;right:20px;bottom:20px;z-index:40;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.totop{width:46px;height:46px;border-radius:50%;border:0;background:var(--accent);color:var(--accent-ink);font-size:20px;cursor:pointer;box-shadow:0 8px 20px rgba(0,0,0,.18);opacity:0;transform:translateY(12px);pointer-events:none;transition:.3s var(--ease)}
.totop.show{opacity:1;transform:none;pointer-events:auto}
.themes{background:#fff;border-radius:999px;padding:6px;display:flex;gap:6px;box-shadow:0 8px 24px rgba(10,24,48,.16);align-items:center}
.themes span{font-size:12px;color:var(--muted);padding:0 6px 0 8px}
.themes button{width:30px;height:30px;border-radius:50%;border:2px solid #fff;cursor:pointer;outline:2px solid transparent;transition:outline-color .2s,transform .2s}
.themes button:hover{transform:scale(1.1)}
.themes button.on{outline-color:var(--brand)}

/* ========== 响应式 ========== */
@media (max-width:1100px){
  .hero h1{font-size:42px}
  .grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  nav.main a{padding:0 11px;font-size:15px}
}
@media (max-width:900px){
  nav.main,.head .search,.topbar .r{display:none}
  .burger{display:grid}
  .head .bar{height:68px;gap:12px}
  .logo img{height:40px}
  .head.scrolled .bar{height:58px}.head.scrolled .logo img{height:34px}
  .cta{margin-left:auto;padding:9px 16px;font-size:14px}
  .hero{min-height:0}
  .hero .wrap{grid-template-columns:1fr;gap:36px;padding-top:52px;padding-bottom:80px}
  .cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols .col:last-child{grid-column:1/-1}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .split{grid-template-columns:1fr}
  .wx{flex-direction:row;text-align:left;gap:20px;justify-content:flex-start}
  .wx img{margin:0;width:110px;height:110px;order:-1}
  footer .top{grid-template-columns:1fr 1fr}
  .links .wrap{flex-direction:column;gap:12px}
  .sec-h{flex-direction:column;align-items:flex-start}
  .tabs{flex-wrap:nowrap;overflow-x:auto;max-width:100%;padding-bottom:4px;scrollbar-width:none}
  .tabs button{flex:none}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .logo img{height:32px}.head.scrolled .logo img{height:28px}
  .cta{display:none}
  .burger{margin-left:auto}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:15px}
  .eyebrow{font-size:11px;letter-spacing:.1em}
  .btn{padding:12px 20px;font-size:14px}
  .entries{gap:10px}.entry{padding:16px 14px}.entry span{font-size:12px}
  .cols{grid-template-columns:1fr}
  .grid{gap:12px}.prod .info{padding:10px 12px 12px}.prod h4{font-size:14px}
  .raw{grid-template-columns:1fr}
  section{padding:48px 0}
  .sec-h h2{font-size:25px}
  footer .top{grid-template-columns:1fr 1fr;gap:24px}
  footer .brand{grid-column:1/-1}
  .themes span{display:none}
  .fab{right:14px;bottom:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .in,.entry,.reveal,.stagger>*{opacity:1!important;transform:none!important}
}

/* ===== 模板附加：二级下拉菜单 ===== */
nav.main li{position:relative}
nav.main ul.sub{display:grid;grid-template-columns:1fr 1fr;gap:2px;position:absolute;top:100%;left:0;min-width:460px;background:#fff;border-radius:12px;box-shadow:0 18px 40px rgba(10,24,48,.18);padding:10px;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s,transform .25s var(--ease),visibility .25s;z-index:20}
nav.main li:hover>ul.sub{opacity:1;visibility:visible;transform:none}
nav.main ul.sub a{color:var(--text)!important;line-height:1.5;padding:9px 12px;font-size:14px;border-radius:8px;white-space:nowrap}
nav.main ul.sub a::after{display:none}
nav.main ul.sub a:hover{background:var(--bg);color:var(--brand)!important}
nav.main li:nth-last-child(-n+3)>ul.sub{left:auto;right:0}
/* 轮播标题 */
.hero .cap{position:absolute;z-index:3;left:0;right:0;bottom:58px;pointer-events:none}
.hero .cap a{pointer-events:auto;display:inline-flex;align-items:center;gap:8px;color:#dfe7f2;font-size:13.5px;background:rgba(0,0,0,.28);padding:6px 14px;border-radius:999px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.hero .cap a::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--lane)}
.hero .cap a:empty{display:none}
.raw .k{display:flex;justify-content:space-between}
@media (max-width:900px){.hero .cap{bottom:44px}.hero .cap a{font-size:12px;max-width:calc(100vw - 32px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}


/* ===================== 内页通用 ===================== */
.page-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;transition:background .4s}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 300px at 85% 0%,rgba(255,196,0,.14),transparent 60%),radial-gradient(700px 260px at 10% 100%,rgba(20,103,216,.30),transparent 60%)}
.page-hero .wrap{position:relative;padding-top:48px;padding-bottom:58px}
.page-hero .eyebrow{opacity:0;animation:rise .7s var(--ease) .05s forwards}
.page-hero h1{font-size:36px;line-height:1.25;margin:12px 0 10px;opacity:0;animation:rise .7s var(--ease) .15s forwards}
.crumb{font-size:13.5px;color:#a9b7ca;opacity:0;animation:rise .7s var(--ease) .25s forwards}
.crumb a{color:#d5deea;transition:color .2s}.crumb a:hover{color:var(--lane)}
.page-hero .road{height:8px;background-size:64px 8px}

.page{padding:40px 0 72px}
.page .wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;align-items:start}
.page.full .wrap{grid-template-columns:minmax(0,1fr)}
.side{position:sticky;top:150px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.side h3{font-size:17px;padding:18px 20px;background:linear-gradient(135deg,var(--ink),var(--nav-bg));color:#fff;position:relative}
[data-theme="light"] .side h3{background:linear-gradient(135deg,#0d2b4e,#1467d8)}
.side h3::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:repeating-linear-gradient(90deg,var(--lane) 0 20px,transparent 20px 32px)}
.side ul{list-style:none;padding:8px}
.side li a{display:flex;justify-content:space-between;align-items:center;padding:11px 12px;border-radius:8px;font-size:14.5px;color:var(--text);transition:background .2s,color .2s,padding .2s}
.side li a::after{content:"›";color:var(--muted);transition:transform .2s}
.side li a:hover{background:var(--bg);color:var(--brand);padding-left:16px}
.side li a:hover::after{transform:translateX(3px)}
.side li a.on{background:var(--tag-hl-bg);color:var(--tag-hl);font-weight:600}
.side .side-wx{padding:18px 20px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--muted)}
.side .side-wx img{width:120px;height:120px;margin:0 auto 8px;border-radius:8px}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 28px 24px}
.panel-h{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:6px}
.panel-h h2{font-size:20px;position:relative;padding-left:14px}
.panel-h h2::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:5px;border-radius:2px;background:var(--lane)}
.panel-h span{font-size:13px;color:var(--muted)}

/* 文章列表 */
.alist{list-style:none}
.alist li{border-bottom:1px dashed var(--line)}
.alist li:last-child{border-bottom:0}
.alist a{display:flex;gap:18px;align-items:center;padding:16px 4px;transition:padding .25s var(--ease),background .25s}
.alist a:hover{padding-left:12px;background:linear-gradient(90deg,var(--bg),transparent)}
.alist .date{flex:none;width:62px;text-align:center;border-right:1px solid var(--line);padding-right:14px}
.alist .date b{display:block;font-size:24px;line-height:1.1;color:var(--ink);font-weight:700}
[data-theme="light"] .alist .date b{color:var(--brand)}
.alist .date small{font-size:12px;color:var(--muted)}
.alist .body{flex:1;min-width:0;display:flex;gap:10px;align-items:center}
.alist .t{font-size:15.5px}
.alist a:hover .t{color:var(--brand)}
.alist .go{flex:none;color:var(--muted);transition:transform .2s,color .2s}
.alist a:hover .go{color:var(--brand);transform:translateX(4px)}
.empty{padding:60px 0;text-align:center;color:var(--muted)}

/* 图文列表 */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;padding:18px 0 6px}
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(10,24,48,.12);border-color:transparent}
.card .pic{aspect-ratio:4/3;overflow:hidden;background:#e7ebf0}
.card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .pic img{transform:scale(1.07)}
.card .info{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h4{font-size:15.5px;line-height:1.45}
.card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .more{margin-top:auto;font-size:13px}

/* 分页 */
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:26px 0 4px;list-style:none}
.pager li{list-style:none}
.pager a,.pager span,.pager li>a,.pager li>span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border-radius:999px;border:1px solid var(--line);font-size:14px;color:var(--text);background:#fff;transition:.2s}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager .active a,.pager .active span,.pager a.active,.pager .thisclass,.pager .current{background:var(--ink);border-color:var(--ink);color:#fff}

/* 正文 */
.art-h{padding:26px 0 18px;border-bottom:1px solid var(--line)}
.art-h h1{font-size:28px;line-height:1.4}
.meta{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:12px;font-size:13.5px;color:var(--muted)}
.meta .back{margin-left:auto;color:var(--brand)}
.prose{padding:26px 0 10px;font-size:16px;line-height:1.9;color:#2b3546;word-break:break-word;overflow-wrap:anywhere}
.prose p{margin:0 0 1em}
.prose h1,.prose h2,.prose h3,.prose h4{margin:1.4em 0 .6em;line-height:1.4;color:var(--text)}
.prose img{max-width:100%!important;height:auto!important;border-radius:8px;margin:10px auto}
.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1em 0;font-size:14px}
.prose td,.prose th{border:1px solid var(--line);padding:8px 10px}
.prose a{color:var(--brand);text-decoration:underline}
.prose ul,.prose ol{padding-left:1.6em;margin:0 0 1em}
.prose blockquote{border-left:4px solid var(--lane);background:var(--bg);padding:12px 16px;margin:1em 0;border-radius:0 8px 8px 0}
.prose video,.prose iframe{max-width:100%}
.prenext{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-top:20px;border-top:1px solid var(--line)}
.prenext a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:10px;font-size:14px;color:var(--text);transition:.2s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.prenext a b{display:block;font-size:12px;color:var(--muted);font-weight:500;margin-bottom:2px}
.prenext a[href]:hover{border-color:var(--brand);color:var(--brand)}
.prenext a.next{text-align:right}
/* 产品详情头部 */
.pd{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;padding:26px 0;border-bottom:1px solid var(--line);align-items:center}
.pd .pic{border-radius:var(--radius);overflow:hidden;background:#eef1f5;aspect-ratio:4/3}
.pd .pic img{width:100%;height:100%;object-fit:cover}
.pd h1{font-size:26px;line-height:1.4;margin:6px 0 12px}
.pd p{color:var(--muted);font-size:15px}
.pd .btns{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.pd .btn.o{color:var(--text);border-color:var(--line)}
.pd .btn.o:hover{border-color:var(--brand);color:var(--brand);background:transparent}
/* 搜索页 */
.big-search{max-width:640px;margin:20px 0 0;background:#fff}
.big-search input{height:50px;font-size:15px}
.alist .tag{margin-top:0}

@media (max-width:900px){
  .page .wrap{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .side h3{display:none}
  .side ul{display:flex;gap:8px;overflow-x:auto;padding:10px;scrollbar-width:none}
  .side li a{white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:7px 14px}
  .side li a::after{display:none}
  .side li a:hover{padding-left:14px}
  .side .side-wx{display:none}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .pd{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:600px){
  .page-hero .wrap{padding-top:32px;padding-bottom:42px}
  .page-hero h1{font-size:26px}
  .page{padding:20px 0 48px}
  .panel{padding:4px 16px 18px}
  .alist a{gap:12px}
  .alist .date{width:50px;padding-right:10px}.alist .date b{font-size:19px}
  .alist .go{display:none}
  .alist .t{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .alist .body{align-items:flex-start}
  .cards{gap:10px}.card .info{padding:10px 12px 12px}.card h4{font-size:14px}.card p{display:none}
  .art-h h1{font-size:22px}
  .prose{font-size:15.5px}
  .prenext{grid-template-columns:minmax(0,1fr)}
  .prenext a.next{text-align:left}
  .meta .back{margin-left:0}
}

/* 内页主体直接显示，不等滚动 */
.page main.reveal{opacity:1;transform:none;animation:fadeup .6s var(--ease) both}
@keyframes fadeup{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.pager{color:var(--muted);font-size:13px;align-items:center}
.pager strong{color:var(--text);margin:0 2px}

.alist .date{width:72px}
.alist .date small{display:block;white-space:nowrap;letter-spacing:0}
@media (max-width:600px){.alist .date{width:58px}.alist .date small{font-size:11px}}

/* 内页横幅：后台 Logo 半透明水印 */
.page-hero .hero-logo{position:absolute;z-index:1;right:max(24px,calc((100vw - var(--wrap))/2 + 24px));top:50%;height:58%;max-height:130px;width:auto;max-width:46%;object-fit:contain;transform:translateY(-50%);opacity:.4;pointer-events:none;user-select:none;animation:logoIn 1.2s var(--ease) .2s both}
@keyframes logoIn{from{opacity:0;transform:translate(24px,-50%)}to{opacity:.4;transform:translateY(-50%)}}
[data-theme="light"] .page-hero .hero-logo{opacity:.45}
@media (max-width:900px){.page-hero .hero-logo{height:44%;max-width:60%;right:16px;opacity:.32}}
@media (max-width:600px){.page-hero .hero-logo{height:auto;width:62%;max-height:none;top:auto;bottom:16px;transform:none;animation:none;opacity:.28}}


/* 首页 标线资讯 */
.news{background:linear-gradient(180deg,rgba(10,24,48,.035),transparent)}
.news-g{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:stretch}
.news-g .nl{position:relative;display:flex;flex-direction:column;gap:12px;padding:28px 30px;border-radius:var(--radius);background:linear-gradient(135deg,#0d2a55,var(--brand));color:#fff;overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s}
.news-g .nl::after{content:"";position:absolute;right:-50px;bottom:-50px;width:200px;height:200px;border-radius:50%;border:26px solid rgba(255,255,255,.07);pointer-events:none}
.news-g .nl:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(10,24,48,.2)}
.news-g .nl .d b{display:block;font-size:42px;line-height:1;font-weight:700;color:var(--lane)}
.news-g .nl .d small{display:block;margin-top:4px;font-size:13px;opacity:.75}
.news-g .nl .bd{align-self:flex-start;font-size:12px;padding:3px 10px;border-radius:99px;background:rgba(255,255,255,.14)}
.news-g .nl h3{font-size:20px;line-height:1.5;color:#fff}
.news-g .nl p{font-size:14px;line-height:1.75;opacity:.82;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-g .nl p:empty{display:none}
.news-g .nl .go{margin-top:auto;font-size:14px;color:var(--lane)}
.news-g .alist{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2px 20px;margin:0}
.news-g .alist .t{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:900px){.news-g{grid-template-columns:1fr}.news-g .nl{padding:22px}.news-g .nl h3{font-size:18px}.news-g .alist{padding:2px 14px}}
@media (max-width:600px){.news-g .alist .t{white-space:normal}}