/* ============================================================
   进行时广告 JINSHISHI AD · 全站样式
   设计基调：极简 / 大留白 / 深色电影感首屏 / 信号黄强调
   ============================================================ */
:root{
  --ink:#0D0E10;            /* 近黑 */
  --ink-2:#16171A;          /* 深面板 */
  --paper:#F7F7F5;          /* 浅底 */
  --card:#FFFFFF;
  --muted:#5C5F66;
  --line:rgba(13,14,16,.10);
  --accent:#FFC72C;         /* 信号黄 */
  --accent-ink:#1B1400;
  --dm:#9B9EA6;             /* 深色弱文字 */
  --dline:rgba(255,255,255,.12);
  --font:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --wrap:1200px;
  --pad:clamp(72px,9vw,120px);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;background:none;border:0}
::selection{background:var(--accent);color:var(--accent-ink)}

.wrap{width:min(var(--wrap),92%);margin-inline:auto}
.sec{padding-block:var(--pad)}
.sec-white{background:#fff}
.sec-dark{background:var(--ink);color:#fff}
.sec-core{
  background:
    radial-gradient(130% 95% at 50% 0%,rgba(255,199,44,.055) 0%,rgba(255,199,44,0) 44%),
    linear-gradient(172deg,#1A1C21 0%,#0D0E10 52%,#14161B 100%);
}

/* ---------- 标题体系 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:14px;font-size:12px;font-weight:600;letter-spacing:.32em;text-transform:uppercase;color:var(--muted)}
.eyebrow::before{content:"";width:36px;height:1px;background:var(--accent)}
.sec-dark .eyebrow{color:var(--dm)}
.h2{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:700;letter-spacing:-.01em;margin-top:22px;max-width:18em}
.h2 em{font-style:normal;color:var(--accent)}
.sec-dark .h2{color:#fff}
.h3{font-size:clamp(19px,2vw,24px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.lead{font-size:clamp(15px,1.5vw,17px);color:var(--muted);max-width:56ch;margin-top:18px;line-height:1.9}
.sec-dark .lead{color:var(--dm)}
.sec-head{max-width:820px}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 32px;border-radius:2px;font-size:15px;font-weight:600;letter-spacing:.06em;transition:transform .3s var(--ease),background .3s,color .3s,border-color .3s;border:1px solid transparent;white-space:nowrap}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-ghost-d{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost-d:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost-l{border-color:var(--line);color:var(--ink)}
.btn-ghost-l:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- 图片与占位图 ---------- */
.m{display:block;width:100%;height:100%;object-fit:cover}
.r16x9{aspect-ratio:16/9}
.r21x9{aspect-ratio:21/9}
.r4x3{aspect-ratio:4/3}
.map-embed{position:relative;overflow:hidden;background:var(--ink);height:830px}
@media (max-width:640px){.map-embed{height:420px}}
.map-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.r3x4{aspect-ratio:3/4}
.r1x1{aspect-ratio:1/1}
.ph{position:relative;display:grid;place-items:center;text-align:center;padding:28px;overflow:hidden;background:radial-gradient(120% 120% at 25% 0%,#1D1F23 0%,#121316 55%,#0B0C0E 100%);border:1px solid rgba(255,255,255,.08);color:#7E8188}
.ph::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,rgba(255,255,255,.025) 0 12px,transparent 12px 24px)}
.ph span{position:relative;font-size:12px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--accent)}
.ph small{position:relative;display:block;margin-top:8px;font-size:11px;letter-spacing:.08em;color:#6E7178}
.ph-fill{position:absolute;inset:0;width:100%;height:100%;z-index:0}

/* ---------- 导航 ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;padding:20px 0;transition:background .35s,padding .35s,box-shadow .35s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:inline-flex;align-items:center;line-height:1}
.logo img{display:block;height:clamp(24px,2.6vw,32px);width:auto}
.logo .logo-black{display:none}
.nav.scrolled .logo .logo-white{display:none}
.nav.scrolled .logo .logo-black{display:block}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;letter-spacing:.1em;color:#fff;opacity:.85;position:relative;transition:opacity .25s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);transition:width .3s var(--ease)}
.nav-links a:hover,.nav-links a.active{opacity:1}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav .btn{padding:11px 22px;font-size:14px;color:var(--accent-ink);opacity:1}
.nav-links .btn::after{display:none}
.nav.scrolled .nav-links .btn{color:var(--accent-ink)}
.nav.scrolled{background:rgba(247,247,245,.92);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line);padding:12px 0}
.nav.scrolled .logo{color:var(--ink)}
.nav.scrolled .nav-links a{color:var(--ink)}
.burger{display:none;width:44px;height:44px;position:relative;z-index:110}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:#fff;transition:.3s var(--ease)}
.burger span:nth-child(1){top:16px}.burger span:nth-child(2){top:23px}.burger span:nth-child(3){top:30px}
.nav.scrolled .burger span{background:var(--ink)}
.burger.open span{background:#fff!important}
.burger.open span:nth-child(1){top:22px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:22px;transform:rotate(-45deg)}

/* ---------- 首页首屏 ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;background:var(--ink);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;animation:kenburns 22s var(--ease) both}
@keyframes kenburns{from{transform:scale(1.08)}to{transform:scale(1)}}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,14,16,.55) 0%,rgba(13,14,16,.28) 45%,rgba(13,14,16,.92) 100%)}
.hero-inner{position:relative;width:min(var(--wrap),92%);margin-inline:auto;padding:clamp(120px,16vh,180px) 0 clamp(56px,8vh,90px)}
.hero-tag{display:inline-flex;align-items:center;gap:12px;font-size:12px;font-weight:600;letter-spacing:.34em;color:var(--accent);text-transform:uppercase;opacity:0;animation:rise .9s var(--ease) .1s forwards}
.hero-tag::before{content:"";width:38px;height:1px;background:var(--accent)}
.hero h1{font-size:clamp(40px,7.4vw,92px);line-height:1.08;font-weight:800;letter-spacing:-.02em;margin:26px 0 0;max-width:9em}
.hero h1 .l{display:block;overflow:hidden}
.hero h1 .l>span{display:inline-block;transform:translateY(110%);animation:riseLine 1s var(--ease) forwards}
.hero h1 .l:nth-child(2)>span{animation-delay:.22s}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{font-size:clamp(15px,1.6vw,18px);color:rgba(255,255,255,.82);max-width:52ch;margin-top:26px;line-height:1.9;opacity:0;animation:rise .9s var(--ease) .5s forwards}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px;opacity:0;animation:rise .9s var(--ease) .65s forwards}
.hero-meta{display:flex;flex-wrap:wrap;gap:clamp(24px,5vw,64px);margin-top:clamp(40px,7vh,72px);padding-top:28px;border-top:1px solid rgba(255,255,255,.14);opacity:0;animation:rise .9s var(--ease) .8s forwards}
.hero-meta b{display:block;font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.01em}
.hero-meta b i{font-style:normal;color:var(--accent)}
.hero-meta span{display:block;font-size:13px;letter-spacing:.14em;color:var(--dm);margin-top:6px}
@keyframes rise{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
@keyframes riseLine{from{transform:translateY(110%)}to{transform:none}}
.hero-scroll{position:absolute;right:clamp(20px,5vw,64px);bottom:44px;display:flex;flex-direction:column;align-items:center;gap:12px;font-size:11px;letter-spacing:.34em;color:var(--dm);writing-mode:vertical-rl}
.hero-scroll::after{content:"";width:1px;height:56px;background:linear-gradient(var(--accent),transparent);animation:drop 2.2s ease-in-out infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 通用区块 ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* 定位语区 */
.manifesto{font-size:clamp(26px,4vw,48px);line-height:1.42;font-weight:700;letter-spacing:-.01em;max-width:20em}
.manifesto span,.manifesto em{font-style:normal;color:var(--accent)}
.manifesto-sub{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border:1px solid var(--line);border-radius:999px;font-size:14px;letter-spacing:.06em}
.chip b{color:var(--accent);font-weight:700}

/* 数据区 */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,44px)}
.stat{border-left:2px solid var(--accent);padding-left:clamp(18px,2.5vw,30px)}
.stat b{display:block;font-size:clamp(38px,5vw,64px);font-weight:800;letter-spacing:-.02em;line-height:1;font-variant-numeric:tabular-nums}
.stat b i{font-style:normal;color:var(--accent)}
.stat span{display:block;margin-top:12px;font-size:14px;letter-spacing:.1em;color:var(--muted)}

/* 核心业务（首页入口） */
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,2.5vw,32px)}
.prod-card{position:relative;overflow:hidden;background:var(--ink)}
.prod-card .m,.prod-card .ph{transition:transform .9s var(--ease)}
.prod-card:hover .m,.prod-card:hover .ph{transform:scale(1.045)}
.prod-card .pc-txt{position:absolute;inset:auto 0 0 0;padding:clamp(20px,3vw,34px);color:#fff;background:linear-gradient(180deg,transparent,rgba(13,14,16,.86));z-index:2}
.prod-card .pc-no{font-size:12px;letter-spacing:.3em;color:var(--accent);font-weight:600}
.prod-card h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-top:8px;letter-spacing:-.01em}
.prod-card p{font-size:14px;color:rgba(255,255,255,.75);margin-top:8px;max-width:40ch;line-height:1.8}
.prod-card .pc-go{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--accent)}
.prod-card .pc-go .arr{transition:transform .3s var(--ease)}
.prod-card:hover .pc-go .arr{transform:translateX(5px)}
.pc-offset{transform:translateY(clamp(12px,3vw,40px))}
.prod-card.pc-wide{grid-column:1/-1}
.prod-card.pc-single{grid-column:1/-1;justify-self:center;width:calc(50% - clamp(9px,1.25vw,16px))}
.sec-dark .prod-card{background:var(--ink-2);border:1px solid var(--dline);box-shadow:0 30px 70px -42px rgba(0,0,0,.85);transition:border-color .35s,box-shadow .35s}
.sec-dark .prod-card:hover{border-color:rgba(255,199,44,.5);box-shadow:0 34px 80px -40px rgba(0,0,0,.9)}

/* 传播网络图解 */
.net-hero{position:relative;background:url("../img/network-map.jpg") center/cover no-repeat;min-height:clamp(560px,92vh,760px);display:flex;align-items:center;overflow:hidden}
.net-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,14,16,.94) 0%,rgba(13,14,16,.74) 36%,rgba(13,14,16,.18) 62%,rgba(13,14,16,0) 100%)}
.net-copy{position:relative;z-index:1;max-width:620px;padding-block:clamp(48px,7vw,88px)}
.net-copy .lead{max-width:44ch}
.net-list{display:grid;gap:26px;margin-top:34px}
.net-item{display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start}
.net-item i{font-style:normal;font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--accent);border:1px solid var(--dline);width:52px;height:52px;display:grid;place-items:center;border-radius:50%}
.net-item h4{font-size:17px;font-weight:700}
.net-item p{font-size:14px;color:var(--dm);margin-top:6px;line-height:1.8}

/* 客户行业 */
.inds{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.ind{position:relative;padding:26px 20px;background:var(--card);border:1px solid var(--line);transition:border-color .3s,transform .3s var(--ease)}
.ind:hover{border-color:var(--accent);transform:translateY(-4px)}
.ind b{display:block;font-size:17px;font-weight:700}
.ind span{display:block;font-size:12px;color:var(--muted);margin-top:6px;line-height:1.7}

/* 案例与新闻卡片 */
.case-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:6;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.92);border:1px solid rgba(13,14,16,.08);color:var(--ink);box-shadow:0 4px 16px rgba(13,14,16,.14);cursor:pointer;transition:background .25s,box-shadow .25s,transform .25s}
.case-arrow:hover{background:#fff;box-shadow:0 6px 20px rgba(13,14,16,.22);transform:translateY(-50%) scale(1.06)}
.case-arrow.case-prev{left:14px}
.case-arrow.case-next{right:14px}
@media (max-width:960px){.case-arrow{display:none}}
.case-sec{overflow:hidden}
.case-bleed{width:100%;padding-inline:clamp(16px,4vw,56px);margin-inline:auto}
.case-track{display:flex;align-items:stretch;gap:clamp(18px,2.5vw,32px);height:clamp(300px,36vw,440px);overflow-x:auto;padding:4px 2px 14px;scroll-snap-type:x proximity;cursor:grab;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.case-track::-webkit-scrollbar{display:none}
.case-track .case-card{flex:0 0 auto;scroll-snap-align:start}
.case-track .case-card .m{height:100%;width:auto;aspect-ratio:auto;object-fit:cover}
.case-track .case-card .ph{width:auto;aspect-ratio:4/3}
.case-track.dragging{cursor:grabbing;scroll-snap-type:none}
.case-wrap{position:relative}
.case-wrap::after{content:"";position:absolute;top:0;right:0;bottom:14px;width:90px;pointer-events:none;background:linear-gradient(90deg,transparent,rgba(13,14,16,.92))}
.case-hint{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-top:16px;font-size:12px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
.case-sec .case-hint{color:var(--dm)}
.case-hint .arr{color:var(--accent);font-weight:700;letter-spacing:.1em}
.case-track.dragging .m,.case-track.dragging .ph{pointer-events:none;user-select:none}
.case-card{position:relative;overflow:hidden}
.case-card .m,.case-card .ph{transition:transform .9s var(--ease)}
.case-card:hover .m,.case-card:hover .ph{transform:scale(1.04)}
.case-card .cc-txt{position:absolute;inset:auto 0 0 0;padding:22px 26px;color:#fff;background:linear-gradient(180deg,transparent,rgba(13,14,16,.85));z-index:2}
.case-card h3{font-size:19px;font-weight:700}
.case-card span{display:block;font-size:12px;letter-spacing:.14em;color:var(--accent);margin-top:6px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px)}
.news-card{display:flex;flex-direction:column;gap:14px;border-top:2px solid var(--line);padding-top:20px;transition:border-color .3s}
.news-card:hover{border-color:var(--accent)}
.news-card time{font-size:12px;letter-spacing:.16em;color:var(--muted)}
.news-card h3{font-size:18px;line-height:1.5;font-weight:700}
.news-card p{font-size:14px;color:var(--muted);line-height:1.8;flex:1}
.news-card .more{font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--ink)}
.news-card .more i{font-style:normal;color:var(--accent)}

/* 底部 CTA */
.cta-band{position:relative;background:linear-gradient(rgba(13,14,16,.8),rgba(13,14,16,.8)),url("../img/cta-bg.jpg") center/cover no-repeat var(--ink);color:#fff;text-align:center;padding:clamp(80px,10vw,140px) 0;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 90% at 50% 110%,rgba(255,199,44,.14),transparent 70%)}
.cta-band h2{font-size:clamp(30px,4.6vw,56px);font-weight:800;letter-spacing:-.01em;line-height:1.2}
.cta-band h2 em{font-style:normal;color:var(--accent)}
.cta-band p{color:var(--dm);margin-top:16px}
.cta-band .hero-cta{justify-content:center}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#fff;padding:clamp(56px,7vw,90px) 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(28px,4vw,60px);padding-bottom:clamp(40px,6vw,64px)}
.footer h5{font-size:13px;letter-spacing:.24em;color:var(--dm);font-weight:600;margin-bottom:20px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.78);padding:5px 0;transition:color .25s}
.footer-col a:hover{color:var(--accent)}
.footer-brand p{font-size:14px;color:var(--dm);margin-top:16px;max-width:34ch;line-height:1.9}
.footer-addr{font-size:14px;color:rgba(255,255,255,.78);line-height:2}
.footer-addr b{display:block;color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 30px;justify-content:space-between;font-size:12px;letter-spacing:.1em;color:#70737A}
.footer-bottom a{color:#70737A;text-decoration:none;transition:color .25s}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 内页 ---------- */
.page-hero{position:relative;background:var(--ink);color:#fff;padding:clamp(130px,18vh,190px) 0 clamp(50px,7vh,80px);overflow:hidden}
.page-hero .ph-hero-bg{position:absolute;inset:0;opacity:.4}
.page-hero .ph-hero-bg img,.page-hero .ph-hero-bg .ph{position:absolute;inset:0;width:100%;height:100%}
.page-hero-inner{position:relative}
.page-hero h1{font-size:clamp(34px,5.6vw,64px);font-weight:800;letter-spacing:-.01em;line-height:1.15;margin-top:22px}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.page-hero .lead{color:var(--dm)}
.crumb{font-size:12px;letter-spacing:.26em;color:var(--dm);text-transform:uppercase}
.crumb b{color:var(--accent);font-weight:600}

/* 产品页 */
.prod-anchor{position:sticky;top:0;z-index:50;background:rgba(247,247,245,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:14px 0}
.prod-anchor ul{display:flex;flex-wrap:wrap;gap:10px}
.prod-anchor a{font-size:14px;letter-spacing:.08em;padding:8px 18px;border:1px solid var(--line);border-radius:999px;transition:.3s}
.prod-anchor a:hover{border-color:var(--accent);color:#000}
.prod-block{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,72px);align-items:center;scroll-margin-top:90px}
.prod-block.flip .pb-media{order:2}
.pb-no{font-size:14px;font-weight:700;letter-spacing:.3em;color:var(--accent)}
.pb-media{overflow:hidden}
.pb-hero{overflow:hidden}
.pb-hero .m,.pb-hero .ph{transition:transform .9s var(--ease)}
.pb-hero:hover .m,.pb-hero:hover .ph{transform:scale(1.04)}
.pb-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:12px}
.pb-gallery .g-item{overflow:hidden}
.pb-gallery .m,.pb-gallery .ph{transition:transform .9s var(--ease)}
.pb-gallery .g-item:hover .m,.pb-gallery .g-item:hover .ph{transform:scale(1.06)}
.pb-body h2{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.01em;line-height:1.2;margin-top:14px}
.pb-body p{color:var(--muted);margin-top:16px;line-height:1.9}
.pb-points{display:grid;gap:14px;margin-top:26px}
.pb-points li{display:flex;gap:12px;font-size:15px;align-items:flex-start}
.pb-points li::before{content:"";flex:none;width:18px;height:18px;margin-top:5px;border:1px solid var(--accent);background:var(--accent);clip-path:polygon(0 0,100% 0,100% 100%,0 100%,50% 50%)}
.pb-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pb-tags span{font-size:12px;letter-spacing:.12em;padding:7px 14px;background:var(--card);border:1px solid var(--line);color:var(--muted)}

/* 关于页 */
.about-grid{display:grid;grid-template-columns:1fr;gap:clamp(28px,5vw,48px);max-width:860px;margin-inline:auto}
.timeline{position:relative;display:grid;gap:0;margin-top:16px}
.tl-item{display:grid;grid-template-columns:120px 1fr;gap:22px;padding:20px 0;border-left:1px solid var(--line);padding-left:28px;position:relative}
.tl-item::before{content:"";position:absolute;left:-5px;top:26px;width:9px;height:9px;border-radius:50%;background:var(--accent)}
.tl-item b{font-size:13px;letter-spacing:.14em;color:var(--accent);font-weight:700}
.tl-item h4{font-size:17px;font-weight:700}
.tl-item p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.8}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.value{padding:26px;background:var(--card);border:1px solid var(--line)}
.value b{font-size:20px;font-weight:800}
.value b i{font-style:normal;color:var(--accent)}
.value p{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.8}

/* 新闻页 */
.news-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.news-filters a{font-size:14px;letter-spacing:.08em;padding:9px 20px;border:1px solid var(--line);border-radius:999px;transition:.3s}
.news-filters a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.news-list{display:grid;gap:0}
.nl-item{display:grid;grid-template-columns:150px 1fr auto;gap:clamp(18px,3vw,40px);align-items:center;padding:28px 0;border-top:1px solid var(--line);transition:background .3s}
.nl-item:last-child{border-bottom:1px solid var(--line)}
.nl-item:hover{background:var(--card)}
.nl-item time{font-size:12px;letter-spacing:.14em;color:var(--muted)}
.nl-item h3{font-size:19px;font-weight:700;line-height:1.5}
.nl-item h3 span{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:8px;line-height:1.8}
.nl-item .go{font-size:12px;letter-spacing:.2em;color:var(--ink);border:1px solid var(--line);padding:9px 16px;border-radius:999px;transition:.3s}
.nl-item .go:hover{border-color:var(--accent);color:var(--accent)}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,5vw,72px);align-items:start}
.c-info{display:grid;gap:26px}
.c-item{border-left:2px solid var(--accent);padding-left:22px}
.c-item span{font-size:12px;letter-spacing:.24em;color:var(--muted);display:block}
.c-item b{display:block;font-size:19px;font-weight:700;margin-top:8px;line-height:1.6}
.form-card{background:var(--card);border:1px solid var(--line);padding:clamp(24px,3vw,40px)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;letter-spacing:.1em;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;padding:14px 16px;border:1px solid var(--line);background:var(--paper);font-family:inherit;font-size:15px;border-radius:2px;transition:border-color .3s;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:130px}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
.step{padding:26px;background:var(--card);border:1px solid var(--line);position:relative}
.step i{font-style:normal;font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--accent)}
.step h4{font-size:17px;font-weight:700;margin-top:10px}
.step p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.8}
.sec-dark .step{background:var(--ink-2);border-color:var(--dline)}
.sec-dark .step h4{color:#fff}
.sec-dark .step p{color:var(--dm)}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .nav-links{position:fixed;inset:0;background:rgba(13,14,16,.98);flex-direction:column;justify-content:center;gap:30px;transform:translateY(-100%);transition:transform .45s var(--ease);z-index:105}
  .nav-links.open{transform:none}
  .nav-links a{font-size:22px;font-weight:600}
  .nav-links .btn{margin-top:8px}
  .burger{display:block}
  .hero-scroll{display:none}
  .prod-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .net-hero::before{background:linear-gradient(180deg,rgba(13,14,16,.92) 0%,rgba(13,14,16,.74) 46%,rgba(13,14,16,.22) 100%)}
  .net-copy{max-width:none;padding-top:clamp(64px,10vh,110px)}
  .pc-offset{transform:none}
  .stats{grid-template-columns:1fr;gap:28px}
  .inds{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .prod-block{grid-template-columns:1fr}
  .prod-block.flip .pb-media{order:0}
  .values{grid-template-columns:1fr}
  .nl-item{grid-template-columns:1fr;gap:8px}
  .nl-item .go{justify-self:start}
  .form-row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media (max-width:560px){
  .logo img{height:22px}
  .inds{grid-template-columns:1fr}
  .pb-gallery{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 新闻详情页 ---------- */
.article-wrap{max-width:860px}
.article-meta{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
.article-meta .dot{color:var(--accent)}
.article h1{font-size:clamp(30px,4.6vw,54px);line-height:1.22;font-weight:800;letter-spacing:-.01em;margin-top:22px}
.article-lead{font-size:clamp(16px,1.7vw,19px);line-height:1.9;color:var(--muted);margin-top:26px;padding-left:22px;border-left:3px solid var(--accent)}
.article-cover{margin-top:34px}
.article-cover img{width:100%;border-radius:2px}
.article-body{margin-top:38px;border-top:1px solid var(--line);padding-top:34px}
.article-body p{font-size:clamp(15px,1.4vw,17px);line-height:2;color:#2A2C31;margin-bottom:1.5em}
.article-body p:last-child{margin-bottom:0}
.article-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin-top:clamp(48px,7vw,80px);padding-top:30px;border-top:1px solid var(--line)}
.an-btn{font-size:13px;letter-spacing:.14em;color:var(--muted);transition:color .3s}
.an-btn:hover{color:var(--accent)}
.an-btn.next{text-align:right;justify-self:end}
.an-btn[aria-disabled="true"]{opacity:.35;pointer-events:none}
.an-back{font-size:13px;letter-spacing:.14em;color:var(--ink);border:1px solid var(--line);padding:10px 18px;border-radius:999px;transition:.3s;justify-self:center}
.an-back:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:640px){
  .article-nav{grid-template-columns:1fr 1fr}
  .an-back{grid-column:1/-1;justify-self:center}
}
.article-gallery{display:flex;flex-wrap:wrap;gap:clamp(10px,1.5vw,18px);margin-top:34px}
.ag-item{position:relative;margin:0;flex:1 1 260px;overflow:hidden;border-radius:2px;background:var(--ink-2)}
.ag-item.ag-p{flex:1 1 190px}
.ag-single .ag-item{flex:1 1 100%}
.article-gallery.hide{display:none}
.article-gallery:has(> .ag-item:only-child) .ag-item{flex:1 1 100%}
.ag-item img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.ag-item:hover img{transform:scale(1.03)}
.ag-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;font-size:12px;line-height:1.6;color:rgba(255,255,255,.88);background:linear-gradient(180deg,transparent,rgba(13,14,16,.72))}
@media (max-width:640px){.ag-item,.ag-item.ag-p{flex-basis:100%}}