/* ============ 隆达机械 · 精工版 ============ */
:root{
  --bg:#FAFBFC;
  --surface:#FFFFFF;
  --ink:#0D1B2A;
  --ink-2:#2B3E55;
  --muted:#64748B;
  --line:#E3E9F0;
  --line-soft:#EEF2F6;
  --cyan:#00A8CC;
  --cyan-deep:#027A94;
  --navy:#0A1626;
  --navy-2:#10233A;
  --radius:14px;
  --font-body:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-display:"Noto Serif SC","Songti SC","SimSun",serif;
  --shadow-sm:0 1px 2px rgba(13,27,42,.05);
  --shadow-md:0 12px 32px -12px rgba(13,27,42,.18);
  --shadow-lg:0 28px 64px -24px rgba(13,27,42,.28);
  --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-body);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1240px,92%);margin:0 auto}
::selection{background:var(--cyan);color:#fff}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--navy);color:#B9C6D6;font-size:12.5px;letter-spacing:.04em}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:22px}
@media(max-width:640px){.topbar .tb-right span:last-child{display:none}}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(250,251,252,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 6px 24px -12px rgba(13,27,42,.16)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand .logo-img{height:46px;width:auto;display:block}
.foot-brand .brand .logo-img{height:44px}
.brand-mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--navy) 55%,var(--cyan) 55.5%,var(--cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-display);font-size:20px;font-weight:700}
.brand-name{line-height:1.25}
.brand-name b{font-size:19px;letter-spacing:.12em;font-weight:700}
.brand-name small{display:block;font-size:10px;letter-spacing:.32em;color:var(--muted);font-weight:500}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink-2);position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--cyan);transition:width .3s var(--ease)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:.06em;transition:transform .25s var(--ease),box-shadow .25s,background .25s;cursor:pointer;border:0}
.btn-cyan{background:var(--cyan);color:#fff;box-shadow:0 10px 24px -10px rgba(0,168,204,.55)}
.btn-cyan:hover{background:var(--cyan-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{padding:10px 24px;font-size:14px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:10px}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.3s var(--ease)}
@media(max-width:960px){
  .nav-links{position:fixed;inset:72px 0 auto 0;background:var(--surface);flex-direction:column;align-items:stretch;gap:0;padding:8px 4%;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);transform:translateY(-12px);opacity:0;pointer-events:none;transition:.3s var(--ease)}
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:14px 8px;border-bottom:1px solid var(--line-soft);font-size:16px}
  .nav-links a::after{display:none}
  .nav-links .btn{margin:12px 8px}
  .burger{display:block}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- Hero ---------- */
.hero{position:relative;background:radial-gradient(1100px 520px at 82% -8%,rgba(0,168,204,.22),transparent 60%),linear-gradient(180deg,var(--navy-2),var(--navy));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:56px 56px;mask-image:radial-gradient(80% 90% at 50% 10%,#000 30%,transparent 100%)}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}
.hero .wrap{z-index:1}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:96px 0 88px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.28em;color:var(--cyan);font-weight:600;margin-bottom:22px}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--cyan)}
.hero h1{font-family:var(--font-display);font-size:clamp(38px,5.2vw,64px);line-height:1.28;font-weight:700;letter-spacing:.04em;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero p.lead{color:#B9C6D6;font-size:clamp(15px,1.6vw,18px);max-width:34em;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:52px}
.hero-stats{display:grid;grid-template-columns:repeat(4,auto);gap:0;justify-content:start;border-top:1px solid rgba(255,255,255,.14)}
.hstat{padding:20px 34px 0 0;margin-right:34px;border-right:1px solid rgba(255,255,255,.1)}
.hstat:last-child{border:0}
.hstat b{display:block;font-family:var(--font-display);font-size:clamp(24px,2.6vw,34px);color:#fff;font-weight:700}
.hstat b i{font-style:normal;color:var(--cyan);font-size:.62em;margin-left:2px}
.hstat span{font-size:12.5px;color:#8FA0B5;letter-spacing:.12em}
.hero-visual{position:relative}
.hero-card{background:#fff;border-radius:20px;padding:26px;box-shadow:var(--shadow-lg);transform:rotate(1.5deg)}
.hero-card img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%;background:#F2F5F8}
.hero-card figcaption{display:flex;justify-content:space-between;align-items:center;margin-top:16px;color:var(--ink)}
.hero-card figcaption b{font-size:16px}
.hero-card figcaption span{font-size:12px;color:var(--muted);letter-spacing:.2em}
.float-badge{position:absolute;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:12px;padding:12px 18px;box-shadow:var(--shadow-md);font-size:13px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px}
.float-badge .dot{width:9px;height:9px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 4px rgba(34,197,94,.15)}
.fb1{top:-18px;left:-24px;transform:rotate(-3deg)}
.fb2{bottom:36px;right:-16px;transform:rotate(2deg)}
.float-badge small{display:block;font-weight:400;color:var(--muted);font-size:11px}
@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr;padding:64px 0 60px;gap:48px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:0}
  .hstat{padding:16px 0 0;margin:0 0 18px;border:0}
  .fb1{left:6px}.fb2{right:6px}
}

/* ---------- 行业横幅 ---------- */
.marquee{background:var(--ink);color:#fff;overflow:hidden;border-top:1px solid rgba(255,255,255,.08)}
.marquee-track{display:flex;gap:0;width:max-content;animation:mq 30s linear infinite;padding:16px 0}
.marquee span{font-size:14px;letter-spacing:.3em;color:#9FB0C4;white-space:nowrap;padding:0 34px;position:relative}
.marquee span::after{content:"◆";position:absolute;right:-6px;color:var(--cyan);font-size:9px;top:50%;transform:translateY(-50%)}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- 通用区块 ---------- */
section{padding:104px 0}
.sec-head{max-width:720px;margin-bottom:56px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-no{display:flex;align-items:center;gap:14px;font-size:13px;letter-spacing:.3em;color:var(--cyan-deep);font-weight:700;margin-bottom:16px}
.sec-head.center .sec-no{justify-content:center}
.sec-no::before{content:"";width:40px;height:2px;background:var(--cyan)}
.sec-head.center .sec-no::after{content:"";width:40px;height:2px;background:var(--cyan)}
.sec-head h2{font-family:var(--font-display);font-size:clamp(28px,3.6vw,44px);font-weight:700;letter-spacing:.05em;line-height:1.35;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16px}
@media(max-width:640px){section{padding:72px 0}.sec-head{margin-bottom:36px}}

/* ---------- 产品中心 ---------- */
#products{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.cat-showcase{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:10px;scroll-margin-top:90px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 10px 22px;display:flex;flex-direction:column;align-items:center;gap:7px;cursor:pointer;transition:.3s var(--ease);font-family:var(--font-body);color:var(--ink)}
.cat-card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:var(--shadow-md)}
.cat-card .cat-icon{width:62px;height:62px;border-radius:17px;background:rgba(0,168,204,.09);display:flex;align-items:center;justify-content:center;color:var(--cyan-deep);margin-bottom:6px;transition:.3s var(--ease)}
.cat-card .cat-icon svg{width:36px;height:36px}
.cat-card b{font-size:16px;letter-spacing:.05em}
.cat-card .cat-n{font-size:12px;color:var(--muted)}
.cat-card small{font-size:10px;letter-spacing:.2em;color:var(--muted);opacity:.75}
.cat-card.on{background:linear-gradient(160deg,var(--navy),var(--navy-2));border-color:var(--navy);color:#fff;box-shadow:var(--shadow-md)}
.cat-card.on .cat-icon{background:rgba(0,200,230,.16);color:var(--cyan)}
.cat-card.on .cat-n,.cat-card.on small{color:rgba(255,255,255,.62)}
.cat-card.cat-all{border-style:dashed;background:transparent}
.cat-card.cat-all.on{background:var(--navy);border-style:solid}
@media(max-width:1024px){.cat-showcase{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.cat-showcase{grid-template-columns:repeat(2,1fr);gap:12px}.cat-card{padding:20px 8px 18px}.cat-card .cat-icon{width:54px;height:54px}.cat-card .cat-icon svg{width:32px;height:32px}}
.pagebar{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:38px;flex-wrap:wrap}
.pbtn{min-width:44px;height:44px;padding:0 14px;border-radius:13px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;transition:.25s var(--ease);font-family:var(--font-body)}
.pbtn:hover:not(:disabled):not(.on){border-color:var(--cyan);color:var(--cyan-deep);transform:translateY(-1px)}
.pbtn.on{background:var(--navy);border-color:var(--navy);color:#fff}
.pbtn:disabled{opacity:.3;cursor:default}
.pbtn.prev,.pbtn.next{font-size:18px}
.pdots{color:var(--muted);padding:0 2px}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:22px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;display:flex;flex-direction:column}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#C9D6E2}
.pcard .pimg{aspect-ratio:4/3;background:#F4F7FA;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;cursor:zoom-in;touch-action:pan-y}
.pcard .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);will-change:transform;pointer-events:none}
.pcard .pimg.zoom img{transform:scale(1.22)}
.pcard .pbody{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.ptag{font-size:11.5px;letter-spacing:.22em;color:var(--cyan-deep);font-weight:700}
.pcard h3{font-size:16.5px;font-weight:600;line-height:1.5}
.pcard .plink{margin-top:auto;padding-top:10px;font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:6px;transition:.25s}
.pcard:hover .plink{color:var(--cyan-deep)}
.pcard.hide{display:none}
.pcount{margin-top:34px;text-align:center;color:var(--muted);font-size:14px;letter-spacing:.1em}
@media(max-width:640px){.pgrid{grid-template-columns:repeat(2,1fr);gap:14px}.pcard .pbody{padding:14px 14px 16px}.pcard h3{font-size:14px}.brand .logo-img{height:40px}}

/* ---------- 精工体系 ---------- */
#craft{background:linear-gradient(180deg,var(--navy),var(--navy-2));color:#fff;position:relative;overflow:hidden}
#craft::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:64px 64px;mask-image:radial-gradient(70% 80% at 50% 50%,#000,transparent 100%)}
#craft .sec-head h2{color:#fff}
#craft .sec-head p{color:#93A3B8}
.craft-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.craft-card{border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:36px 30px;background:rgba(255,255,255,.03);backdrop-filter:blur(4px);transition:.35s var(--ease)}
.craft-card:hover{background:rgba(255,255,255,.07);border-color:rgba(0,168,204,.5);transform:translateY(-6px)}
.craft-card .num{font-family:var(--font-display);font-size:15px;color:var(--cyan);letter-spacing:.24em;margin-bottom:18px}
.craft-card h3{font-size:20px;margin-bottom:12px;letter-spacing:.06em}
.craft-card p{font-size:14.5px;color:#93A3B8;line-height:1.8}
@media(max-width:960px){.craft-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.craft-grid{grid-template-columns:1fr}.craft-card{padding:28px 24px}}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.about-copy p{color:var(--ink-2);margin-bottom:18px;text-align:justify}
.about-copy p b{color:var(--ink)}
.fact-list{margin-top:30px;border-top:2px solid var(--ink)}
.fact{display:flex;justify-content:space-between;gap:20px;padding:15px 2px;border-bottom:1px solid var(--line);font-size:15px}
.fact span:first-child{color:var(--muted);letter-spacing:.08em;white-space:nowrap}
.fact span:last-child{font-weight:600;text-align:right}
.honor-box{background:var(--navy);color:#fff;border-radius:20px;padding:44px 40px;position:sticky;top:104px}
.honor-box h3{font-family:var(--font-display);font-size:24px;letter-spacing:.1em;margin-bottom:8px}
.honor-box>p{color:#93A3B8;font-size:14px;margin-bottom:26px}
.honor-tags{display:flex;flex-wrap:wrap;gap:10px}
.honor-tags span{font-size:13px;border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:8px 16px;color:#D6DEE8;letter-spacing:.04em}
.honor-tags span.hot{border-color:var(--cyan);color:var(--cyan)}
@media(max-width:960px){.about-grid{grid-template-columns:1fr;gap:40px}.honor-box{position:static}}

/* ---------- 应用领域 ---------- */
#industries{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ind-card{border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;background:#fff;transition:.3s var(--ease);position:relative;overflow:hidden}
.ind-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--cyan);transform:scaleY(0);transition:.3s var(--ease);transform-origin:top}
.ind-card:hover::before{transform:scaleY(1)}
.ind-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-4px)}
.ind-card .ic{font-size:30px;margin-bottom:16px}
.ind-card h3{font-size:18px;letter-spacing:.08em;margin-bottom:8px}
.ind-card p{font-size:13.5px;color:var(--muted)}
.ind-card:last-child{background:var(--navy);border-color:var(--navy);color:#fff}
.ind-card:last-child p{color:#93A3B8}
@media(max-width:960px){.ind-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.ind-grid{grid-template-columns:1fr 1fr;gap:12px}.ind-card{padding:24px 18px}.ind-card h3{font-size:16px}}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.news-card{border:1px solid var(--line);border-radius:var(--radius);padding:36px;background:#fff;display:flex;flex-direction:column;gap:14px;transition:.3s var(--ease)}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#C9D6E2}
.news-meta{display:flex;gap:14px;align-items:center;font-size:12.5px;color:var(--muted);letter-spacing:.14em}
.news-meta .cat{color:var(--cyan-deep);font-weight:700}
.news-card h3{font-size:19px;line-height:1.6;font-weight:600}
.news-card p{font-size:14.5px;color:var(--muted);flex:1}
.news-card .more{font-size:14px;color:var(--cyan-deep);font-weight:600}
@media(max-width:760px){.news-grid{grid-template-columns:1fr}.news-card{padding:28px 24px}}

/* ---------- 联系 ---------- */
#contact{background:linear-gradient(180deg,var(--navy-2),var(--navy));color:#fff;position:relative;overflow:hidden}
#contact .sec-head h2{color:#fff}
#contact .sec-head p{color:#93A3B8}
.office-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:48px}
.office{border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:30px 26px;background:rgba(255,255,255,.03)}
.office h3{font-size:17px;letter-spacing:.1em;margin-bottom:14px;color:var(--cyan)}
.office p{font-size:13.5px;color:#B9C6D6;line-height:2}
.office p b{color:#fff;font-weight:600}
.contact-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid rgba(0,168,204,.4);background:rgba(0,168,204,.08);border-radius:20px;padding:40px 44px;flex-wrap:wrap}
.contact-cta h3{font-family:var(--font-display);font-size:clamp(22px,2.8vw,30px);letter-spacing:.06em;margin-bottom:8px}
.contact-cta p{color:#93A3B8;font-size:15px}
.cc-tels{display:flex;gap:26px;flex-wrap:wrap}
.cc-tels a{font-family:var(--font-display);font-size:clamp(20px,2.4vw,28px);font-weight:700;color:#fff;letter-spacing:.04em}
.cc-tels a:hover{color:var(--cyan)}
@media(max-width:960px){.office-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.office-grid{grid-template-columns:1fr}.contact-cta{padding:30px 26px}}

/* ---------- 内页横幅 + 首页 CTA ---------- */
.page-hero{background:linear-gradient(150deg,#0A1626 0%,#0E2A45 55%,#0B3A52 100%);color:#fff;padding:120px 0 84px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(0,200,230,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(0,200,230,.06) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 80% 90% at 30% 20%,#000 30%,transparent 75%)}
.page-hero::after{content:"";position:absolute;width:520px;height:520px;right:-140px;top:-140px;background:radial-gradient(circle,rgba(0,200,230,.22),transparent 65%)}
.page-hero .wrap{position:relative;z-index:1}
.ph-no{font-size:13px;letter-spacing:.3em;color:var(--cyan);font-weight:700;margin-bottom:14px}
.page-hero h1{font-family:var(--font-display);font-size:clamp(36px,5vw,58px);letter-spacing:.08em;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.68);font-size:16px;max-width:640px}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:28px;background:linear-gradient(140deg,var(--navy),var(--navy-2) 60%,#0B3A52);border-radius:24px;padding:52px 56px;flex-wrap:wrap;color:#fff;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-120px;background:radial-gradient(circle,rgba(0,200,230,.25),transparent 65%)}
.cta-band>div{position:relative;z-index:1}
.cta-band h3{font-family:var(--font-display);font-size:clamp(24px,3vw,34px);letter-spacing:.05em;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px}
.cat-showcase.home-cats{grid-template-columns:repeat(5,1fr)}
a.cat-card{text-decoration:none}
@media(max-width:1024px){.cat-showcase.home-cats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.cat-showcase.home-cats{grid-template-columns:repeat(2,1fr)}.cta-band{padding:36px 28px}}

/* ---------- 页脚 ---------- */
footer{background:#070F1B;color:#8FA0B5;padding:64px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-brand .brand-name b{color:#fff}
.foot-brand p{margin-top:16px;max-width:26em;line-height:1.9}
footer h4{color:#fff;font-size:15px;letter-spacing:.14em;margin-bottom:18px;font-weight:600}
.foot-links{list-style:none;display:flex;flex-direction:column;gap:12px}
.foot-links a:hover{color:var(--cyan)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px}
.foot-bottom a:hover{color:var(--cyan)}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr;gap:30px}}

/* ---------- 浮动按钮 & 动效 ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;background:var(--navy);color:#fff;border:1px solid rgba(255,255,255,.2);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s;z-index:90;box-shadow:var(--shadow-md)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--cyan-deep)}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.marquee-track{animation:none}html{scroll-behavior:auto}}

/* 语言切换器 */
.lang{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:7px;background:transparent;border:1px solid var(--line);border-radius:999px;padding:8px 15px;font-size:13px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:border-color .25s,color .25s;white-space:nowrap}
.lang-btn:hover{border-color:var(--cyan);color:var(--ink)}
.lang-btn i{font-style:normal;font-size:10px;color:var(--ink-3);transition:transform .25s}
.lang.open .lang-btn i{transform:rotate(180deg)}
.lang-menu{position:absolute;top:calc(100% + 10px);right:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-md);padding:6px;min-width:140px;display:none;z-index:80}
.lang.open .lang-menu{display:block}
.lang-menu button{display:block;width:100%;text-align:left;background:none;border:0;padding:10px 13px;font-size:13.5px;border-radius:9px;cursor:pointer;color:var(--ink-2);font-family:inherit}
.lang-menu button:hover{background:#F2F7FA}
.lang-menu button.on{color:var(--cyan-deep);font-weight:700}
@media(max-width:960px){
  .lang{margin:12px 8px}
  .lang-btn{width:100%;justify-content:center;padding:12px}
  .lang-menu{position:static;box-shadow:none;border:0;border-top:1px solid var(--line-soft);border-radius:0;margin-top:8px;min-width:0}
}