/* ============================================================
   金石星三维打印 — 全站样式 v2 (2026-10)
   配色：深海军蓝 + 科技蓝 + 活力橙
   ============================================================ */
:root{
  --navy-950:#081527;
  --navy-900:#0b1f33;
  --navy-800:#122b44;
  --navy-700:#1a3a5c;
  --blue-500:#1f6feb;
  --blue-400:#3b8bff;
  --orange-500:#ff7a1a;
  --orange-600:#f56a00;
  --cyan-400:#38bdf8;
  --text-900:#101828;
  --text-700:#344054;
  --text-500:#667085;
  --line:#e6ebf2;
  --bg:#f5f7fa;
  --card:#ffffff;
  --radius:14px;
  --shadow-sm:0 1px 3px rgba(16,24,40,.07);
  --shadow-md:0 6px 20px rgba(16,24,40,.09);
  --shadow-lg:0 16px 44px rgba(8,21,39,.16);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text-700);background:var(--bg);font-size:15px;line-height:1.75}
img{max-width:100%;display:inline-block;vertical-align:middle}
a{color:var(--blue-500);text-decoration:none;transition:color .2s}
a:hover{color:var(--orange-500)}
ul,ol{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
h1,h2,h3,h4{color:var(--text-900);font-weight:700;line-height:1.35}

/* ---------------- 顶部导航 ---------------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:46px}
.brand-text{display:none}
.main-nav{margin-left:auto}
.main-nav>ul{display:flex;align-items:center;gap:4px}
.main-nav>ul>li{position:relative}
.main-nav>ul>li>a{display:flex;align-items:center;gap:4px;padding:10px 14px;font-size:15.5px;font-weight:600;color:var(--text-900);border-radius:8px}
.main-nav>ul>li>a:hover{color:var(--blue-500);background:#eef4ff}
.main-nav>ul>li>a .arrow{font-size:10px;color:var(--text-500);transition:transform .2s}
.main-nav>ul>li:hover>a .arrow{transform:rotate(180deg)}
.main-nav>ul>li.active>a{color:var(--blue-500)}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(6px);min-width:200px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transition:all .22s ease}
.main-nav>ul>li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:9px 14px;border-radius:8px;font-size:14px;color:var(--text-700);white-space:nowrap}
.dropdown a:hover{background:#eef4ff;color:var(--blue-500)}
.header-phone{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--orange-500),var(--orange-600));color:#fff;font-weight:700;font-size:15.5px;padding:10px 18px;border-radius:999px;box-shadow:0 4px 14px rgba(255,122,26,.35);flex-shrink:0}
.header-phone:hover{color:#fff;transform:translateY(-1px)}
.header-phone svg{flex-shrink:0}
.menu-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--text-900);border-radius:2px;transition:.25s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------------- 首页 Hero ---------------- */
.hero{position:relative;background:linear-gradient(135deg,var(--navy-950) 0%,var(--navy-800) 55%,#14395e 100%);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000 30%,transparent 75%)}
.hero::after{content:"";position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(56,189,248,.22),transparent 65%);top:-180px;right:-120px}
.hero::before,.hero::after{pointer-events:none}
.hero-inner{position:relative;z-index:1;padding:96px 0 72px;max-width:760px}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(56,189,248,.14);border:1px solid rgba(56,189,248,.35);color:var(--cyan-400);font-size:13.5px;font-weight:600;letter-spacing:2px;padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{color:#fff;font-size:clamp(30px,4.6vw,50px);line-height:1.25;letter-spacing:1px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--cyan-400),var(--blue-400));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{margin:20px 0 34px;font-size:16.5px;color:rgba(255,255,255,.78);max-width:640px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:10px;font-size:15.5px;font-weight:700;transition:.25s}
.btn-primary{background:linear-gradient(135deg,var(--orange-500),var(--orange-600));color:#fff;box-shadow:0 6px 20px rgba(255,122,26,.4)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,122,26,.5)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.hero-stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:0 0 56px;max-width:860px}
.hero-stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);padding:18px 22px;backdrop-filter:blur(4px)}
.hero-stat b{display:block;font-size:30px;color:#fff;line-height:1.2;font-weight:800}
.hero-stat b i{font-style:normal;font-size:16px;margin-left:2px;color:var(--cyan-400)}
.hero-stat span{font-size:13.5px;color:rgba(255,255,255,.65)}

/* ---------------- 区块通用 ---------------- */
.section{padding:76px 0}
.section-alt{background:#fff}
.section-head{text-align:center;max-width:680px;margin:0 auto 46px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--blue-500);background:#e8f1ff;border-radius:999px;padding:5px 16px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3vw,32px)}
.section-head .en{margin-top:8px;font-size:13px;letter-spacing:2.5px;color:#9aa7b8;text-transform:uppercase}
.section-head p{margin-top:14px;color:var(--text-500);font-size:15px}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

/* 服务工艺卡片 */
.craft-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.28s;display:block;color:inherit}
.craft-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.craft-card .thumb{height:168px;overflow:hidden;background:linear-gradient(135deg,var(--navy-800),var(--navy-700))}
.craft-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.craft-card:hover .thumb img{transform:scale(1.06)}
.craft-card .body{padding:18px 20px 20px}
.craft-card h3{font-size:17px;margin-bottom:6px}
.craft-card h3 span{display:block;font-size:11px;font-weight:600;letter-spacing:1.5px;color:#9aa7b8;margin-top:3px;text-transform:uppercase}
.craft-card p{font-size:13.5px;color:var(--text-500);line-height:1.65}

/* 应用领域卡片 */
.field-card{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;display:block}
.field-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.field-card:hover img{transform:scale(1.07)}
.field-card .mask{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(8,21,39,.85));display:flex;align-items:flex-end;padding:20px}
.field-card h3{color:#fff;font-size:18px}
.field-card h3 span{display:block;font-size:11.5px;font-weight:500;letter-spacing:1.5px;color:rgba(255,255,255,.65);margin-top:2px}

/* 优势特色 */
.feature-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.25s}
.feature-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.feature-item .ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,#e8f1ff,#dceafe);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-item .ico svg{stroke:var(--blue-500)}
.feature-item h3{font-size:16.5px;margin-bottom:8px}
.feature-item p{font-size:13.5px;color:var(--text-500)}

/* 关于我们简介 */
.about-split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.about-split .pic{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-split h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px}
.about-split .lead{color:var(--text-500);margin-bottom:14px}
.about-split .ticks{margin:18px 0 26px;display:grid;gap:10px}
.about-split .ticks li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-700)}
.about-split .ticks svg{flex-shrink:0;margin-top:4px;stroke:var(--orange-500)}

/* 新闻列表（首页） */
.news-home{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 28px}
.news-row{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;transition:.22s}
.news-row:hover{box-shadow:var(--shadow-md);border-color:transparent}
.news-row .date{flex-shrink:0;text-align:center;background:linear-gradient(135deg,#eef4ff,#e0edff);border-radius:10px;padding:8px 10px;min-width:64px}
.news-row .date b{display:block;font-size:20px;color:var(--blue-500);line-height:1.1}
.news-row .date span{font-size:11.5px;color:var(--text-500)}
.news-row h3{font-size:15.5px;line-height:1.5;margin-bottom:4px}
.news-row h3 a{color:var(--text-900)}
.news-row h3 a:hover{color:var(--blue-500)}
.news-row p{font-size:13px;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 合作客户 */
.client-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.client-grid li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;align-items:center;justify-content:center;min-height:76px;transition:.22s}
.client-grid li:hover{box-shadow:var(--shadow-md)}
.client-grid img{max-height:52px;object-fit:contain}

/* CTA 横幅 */
.cta-band{background:linear-gradient(120deg,var(--navy-900),#173f68 60%,#1d4f80);border-radius:20px;padding:46px 50px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(56,189,248,.25),transparent 65%);right:-80px;top:-120px}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,27px)}
.cta-band p{color:rgba(255,255,255,.72);margin-top:8px;font-size:14.5px}
.cta-band .btn{position:relative;z-index:1}

/* ---------------- 内页头 ---------------- */
.page-hero{position:relative;background:linear-gradient(135deg,var(--navy-950),#14395e);color:#fff;padding:64px 0 54px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 30% 40%,#000 20%,transparent 75%)}
.page-hero-inner{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px}
.breadcrumb a{color:rgba(255,255,255,.62)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.35)}
.page-hero h1{color:#fff;font-size:clamp(24px,3.4vw,36px)}
.page-hero .sub{margin-top:12px;color:rgba(255,255,255,.7);font-size:15px;max-width:720px}

/* ---------------- 富文本内容 ---------------- */
.rich-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:44px clamp(22px,4vw,56px);box-shadow:var(--shadow-sm)}
.rich{font-size:15.5px;color:var(--text-700);line-height:1.9}
.rich p{margin:0 0 14px}
.rich strong{color:var(--text-900)}
.rich img{max-width:100%;height:auto;border-radius:10px;margin:10px 0;display:block}
.rich h2,.rich h3{font-size:20px;margin:34px 0 16px;padding-left:14px;border-left:4px solid var(--orange-500)}
.rich h4{font-size:17px;margin:26px 0 12px}
.rich ul,.rich ol{margin:0 0 16px;padding-left:4px}
.rich ul li{position:relative;padding-left:22px;margin-bottom:8px}
.rich ul li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--orange-500)}
.rich ol{counter-reset:li}
.rich ol li{position:relative;padding-left:26px;margin-bottom:8px;counter-increment:li}
.rich ol li::before{content:counter(li);position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;background:#e8f1ff;color:var(--blue-500);font-size:12px;font-weight:700;text-align:center;line-height:18px}

/* 服务页锚点导航 */
.anchor-nav{position:sticky;top:72px;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);margin-top:-28px}
.anchor-nav ul{display:flex;gap:6px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-nav ul::-webkit-scrollbar{display:none}
.anchor-nav a{display:inline-block;white-space:nowrap;padding:8px 18px;border-radius:999px;background:#f0f4f9;color:var(--text-700);font-size:14px;font-weight:600;border:1px solid transparent}
.anchor-nav a:hover{color:var(--blue-500);background:#e8f1ff}
.service-hero-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);margin:34px 0 10px}
.service-hero-img img{width:100%;display:block}
.service-sec{padding:40px 0 6px}
.service-sec:last-of-type{padding-bottom:50px}

/* 应用案例页 */
.case-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px clamp(20px,3.5vw,42px);margin-bottom:26px;box-shadow:var(--shadow-sm)}
.case-block h3{font-size:20px;margin-bottom:20px;display:flex;align-items:center;gap:12px}
.case-block h3::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(180deg,var(--cyan-400),var(--blue-500));flex-shrink:0}
.case-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.case-gallery img{width:100%;height:210px;object-fit:cover;border-radius:10px;transition:.3s}
.case-gallery img:hover{transform:scale(1.02);box-shadow:var(--shadow-md)}
.case-sol h4{font-size:15.5px;color:var(--blue-500);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.case-sol h4::before{content:"";width:18px;height:2px;background:var(--blue-500);border-radius:2px}

/* 分类卡片（案例/服务总览） */
.cover-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:block;transition:.28s;color:inherit}
.cover-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.cover-card .thumb{height:190px;overflow:hidden}
.cover-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.cover-card:hover .thumb img{transform:scale(1.06)}
.cover-card .body{padding:18px 20px}
.cover-card h3{font-size:17px;margin-bottom:6px}
.cover-card p{font-size:13.5px;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------------- 新闻列表页 ---------------- */
.article-card{display:flex;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;margin-bottom:18px}
.article-card:hover{box-shadow:var(--shadow-md);border-color:transparent}
.article-card .ac-date{flex-shrink:0;width:104px;background:linear-gradient(160deg,#eef4ff,#e3eeff);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.article-card .ac-date b{font-size:28px;color:var(--blue-500);line-height:1.1}
.article-card .ac-date span{font-size:12px;color:var(--text-500)}
.article-card .ac-body{padding:20px 24px}
.article-card h3{font-size:17.5px;margin-bottom:8px}
.article-card h3 a{color:var(--text-900)}
.article-card h3 a:hover{color:var(--blue-500)}
.article-card p{font-size:13.5px;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------------- 详情页 ---------------- */
.detail-meta{display:flex;gap:18px;align-items:center;font-size:13.5px;color:var(--text-500);margin-bottom:26px}
.detail-meta span{display:inline-flex;align-items:center;gap:6px}
.detail-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px;padding-top:22px;border-top:1px dashed var(--line)}
.detail-nav a{display:block;background:#f7f9fc;border:1px solid var(--line);border-radius:10px;padding:13px 18px;font-size:14px;color:var(--text-700);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.detail-nav a:hover{border-color:var(--blue-400);color:var(--blue-500);background:#eef4ff}
.detail-nav .label{display:block;font-size:12px;color:var(--text-500);margin-bottom:3px}

/* ---------------- 联系页 ---------------- */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:26px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;gap:16px;align-items:flex-start}
.contact-card .ico{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#e8f1ff,#dceafe);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-card .ico svg{stroke:var(--blue-500)}
.contact-card h3{font-size:15.5px;margin-bottom:5px}
.contact-card p{font-size:14.5px;color:var(--text-700);word-break:break-all}
.contact-card p small{display:block;color:var(--text-500);font-size:12.5px}
.qr-row{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qr-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center}
.qr-card img{width:150px;height:150px;object-fit:contain;margin-bottom:10px;background:#f7f9fc;border-radius:10px;padding:8px}
.qr-card h3{font-size:15px}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--navy-950);color:rgba(255,255,255,.66);margin-top:80px}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px;padding:60px 0 44px}
.footer-top h4{color:#fff;font-size:15.5px;margin-bottom:18px;position:relative;padding-bottom:12px}
.footer-top h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:3px;border-radius:2px;background:var(--orange-500)}
.footer-top ul li{margin-bottom:10px}
.footer-top a{color:rgba(255,255,255,.66);font-size:13.5px}
.footer-top a:hover{color:#fff}
.footer-about p{font-size:13.5px;line-height:1.8;margin-bottom:16px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;margin-bottom:12px;align-items:flex-start}
.footer-contact svg{flex-shrink:0;margin-top:4px;stroke:var(--cyan-400)}
.footer-contact a{color:rgba(255,255,255,.8)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.45)}
.footer-bottom a:hover{color:#fff}

/* ---------------- 404 ---------------- */
.nf-wrap{min-height:64vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px}
.nf-code{font-size:110px;font-weight:800;line-height:1;background:linear-gradient(90deg,var(--blue-500),var(--cyan-400));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nf-wrap h1{font-size:24px;margin:18px 0 10px}
.nf-wrap p{color:var(--text-500);margin-bottom:28px}

/* 回到顶部 */
#backTop{position:fixed;right:26px;bottom:34px;width:46px;height:46px;border-radius:12px;background:var(--navy-800);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:.25s;z-index:90;cursor:pointer}
#backTop.show{opacity:1;visibility:visible}
#backTop:hover{background:var(--blue-500)}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  /* 关键：backdrop-filter 会成为内部 fixed 元素的包含块，导致手机菜单高度塌缩为0，移动端必须去掉 */
  .site-header{backdrop-filter:none;background:#fff}
  .grid-5{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .client-grid{grid-template-columns:repeat(4,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
  .about-split{grid-template-columns:1fr;gap:30px}
  .main-nav{position:fixed;top:72px;left:0;right:0;bottom:auto;height:calc(100vh - 72px);background:#fff;padding:18px 5%;overflow-y:auto;transform:translateX(105%);transition:.3s;margin-left:0;z-index:101;-webkit-overflow-scrolling:touch}
  .main-nav.open{transform:translateX(0)}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:2px}
  .main-nav>ul>li>a{padding:14px 10px;border-bottom:1px solid var(--line);border-radius:0;font-size:16px;justify-content:space-between}
  .dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;padding:0 0 8px 14px;display:none;min-width:0}
  .main-nav>ul>li.drop-open .dropdown{display:block}
  .main-nav>ul>li:hover .dropdown{transform:none}
  .menu-toggle{display:flex}
  .header-phone{display:none}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .hero-inner{padding:64px 0 48px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:12px;padding-bottom:44px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .grid-5{grid-template-columns:repeat(2,1fr)}
  .news-home{grid-template-columns:1fr}
  .contact-grid,.qr-row{grid-template-columns:1fr}
  .case-gallery{grid-template-columns:1fr 1fr}
  .case-gallery img{height:150px}
  .client-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:34px 26px}
  .footer-top{grid-template-columns:1fr;gap:30px;padding:44px 0 34px}
  .anchor-nav{top:60px;margin-top:-16px}
  .detail-nav{grid-template-columns:1fr}
  .rich-wrap{padding:26px 18px}
  .article-card .ac-date{width:76px}
  .article-card .ac-date b{font-size:22px}
}
@media (max-width:480px){
  .grid-5,.grid-4{grid-template-columns:1fr}
  .case-gallery{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  .brand img{height:38px}
}