/* OOBEK 欧贝克 — styles follow design-spec.md v1. Brand tokens below; swap here only. */
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/barlow-condensed-700-latin.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:800;font-display:swap;src:url(../fonts/barlow-condensed-800-latin.woff2) format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:400 600;font-display:swap;src:url(../fonts/inter-var-latin.woff2) format("woff2")}
:root{
  --c-black:#1a1a1a;      /* 主色 · 工业黑 */
  --c-accent:#e85d04;     /* 强调色 · 警示橙 */
  --c-accent-hover:#c94f03;
  --c-white:#ffffff;
  --c-char:#2a2a2a;       /* 炭灰 */
  --c-mid:#8a8a8a;        /* 中灰 */
  --c-light:#f2f2f2;      /* 浅灰 */
  --c-text-dim:#c4c4c4;
  --f-display:"Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --f-body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --radius:4px;
  --wrap:1200px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 8px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--f-body);color:var(--c-white);background:var(--c-black);line-height:1.6;font-size:17px}
html[lang^="zh"] body{line-height:1.75}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);line-height:1.08;margin:0 0 .5em;letter-spacing:.02em;font-weight:800}
html[lang^="zh"] h1,html[lang^="zh"] h2,html[lang^="zh"] h3{font-weight:700;letter-spacing:.04em;line-height:1.25}
h2{font-size:clamp(2.1rem,4vw,3.2rem);text-transform:uppercase}
h3{font-size:1.4rem;font-weight:700}
p{margin:0 0 1em}
address{font-style:normal}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;position:relative}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--c-accent);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(26,26,26,.96);border-bottom:1px solid #333}
.header-inner{display:flex;align-items:center;gap:32px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:none;text-decoration:none}
.brand img{width:44px;height:44px}
.brand-name{font-family:var(--f-display);font-weight:800;font-size:1.5rem;letter-spacing:.06em;line-height:1}
.brand-cn{font-size:.85rem;color:var(--c-mid);letter-spacing:.12em;padding-left:10px;border-left:2px solid var(--c-accent);line-height:1}
.nav{display:flex;gap:32px;margin-left:auto}
.nav a{text-decoration:none;font-size:.95rem;font-weight:500;color:var(--c-text-dim);transition:color .15s}
.nav a:hover{color:var(--c-accent)}
.header-actions{display:flex;align-items:center;gap:8px}
.lang{display:flex;border:1.5px solid #555;border-radius:var(--radius);overflow:hidden}
.lang-btn{font:inherit;font-size:.85rem;font-weight:600;background:transparent;color:var(--c-text-dim);border:0;padding:6px 12px;cursor:pointer;min-height:34px}
.lang-btn[aria-pressed="true"]{background:var(--c-white);color:var(--c-black)}
.lang-btn:hover{color:var(--c-accent)}
.lang-btn[aria-pressed="true"]:hover{color:var(--c-black)}
.menu-toggle{display:none;border:0;background:transparent;width:42px;height:42px;cursor:pointer;padding:0}
.bars,.bars::before,.bars::after{display:block;width:22px;height:2px;background:var(--c-white);margin:auto;position:relative;transition:.2s}
.bars::before,.bars::after{content:"";position:absolute;left:0}
.bars::before{top:-7px}.bars::after{top:7px}
.menu-toggle[aria-expanded="true"] .bars{background:transparent}
.menu-toggle[aria-expanded="true"] .bars::before{top:0;transform:rotate(45deg)}
.menu-toggle[aria-expanded="true"] .bars::after{top:0;transform:rotate(-45deg)}

/* buttons */
.btn{display:inline-block;font:inherit;font-weight:600;text-decoration:none;padding:13px 26px;border-radius:var(--radius);border:1.5px solid transparent;cursor:pointer;transition:background .15s,color .15s,transform .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-hover)}
.btn-ghost{border-color:var(--c-white);color:var(--c-white)}
.btn-ghost:hover{background:var(--c-white);color:var(--c-black)}

/* decorative double rings (motif: seeing / being seen) */
.rings{position:absolute;display:flex;pointer-events:none;opacity:.07}
.rings span{border:3px solid var(--c-white);border-radius:50%}
.rings-contact{left:-160px;bottom:-140px}
.rings-contact span{width:360px;height:360px;margin-left:-50px}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--c-black) url(../assets/hero-pattern.svg) center/cover no-repeat}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;grid-template-areas:"text visual";gap:56px;align-items:center;padding-top:110px;padding-bottom:110px}
.hero h1{font-size:clamp(2.9rem,6.4vw,5.4rem);text-transform:uppercase;margin-bottom:.35em}
html[lang^="zh"] .hero h1{font-size:clamp(2.4rem,5.4vw,4.4rem);text-transform:none}
.accent{color:var(--c-accent);white-space:nowrap}
.eyebrow{font-family:var(--f-display);text-transform:uppercase;letter-spacing:.18em;font-size:.95rem;font-weight:700;color:var(--c-accent);margin-bottom:.8em}
.lead{font-size:1.2rem;color:var(--c-text-dim);max-width:32em}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-text{grid-area:text}
.hero-visual{grid-area:visual}
.hero-visual img{width:100%;max-width:400px;margin-left:auto}

/* sections */
.section{padding:110px 0;position:relative;overflow:hidden}
.section.light{background:var(--c-white);color:var(--c-black)}
.section.alt{background:var(--c-char)}
.section-lead{font-size:1.15rem;color:var(--c-text-dim);max-width:38em}
.light .section-lead,.light p{color:#333}

.about-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:72px;align-items:center}
.about-grid p{font-size:1.06rem}
.about-grid .strong{font-weight:600;color:var(--c-black);border-left:3px solid var(--c-accent);padding-left:14px}
.cn-name{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.cn-name li{display:flex;gap:20px;align-items:center;padding:18px 20px;background:var(--c-light);border-radius:var(--radius)}
.glyph{flex:none;width:64px;height:64px;display:grid;place-items:center;font-size:2.1rem;font-weight:700;background:var(--c-black);color:#fff;border-radius:var(--radius);border-bottom:3px solid var(--c-accent);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif}
.cn-name h3{margin:0 0 .1em;font-size:1.3rem;color:var(--c-black)}
.cn-name p{margin:0;color:#555;font-size:.97rem}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.card{background:var(--c-char);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;border:1px solid #333;transition:border-color .2s}
.card:hover{border-color:var(--c-accent)}
.card-img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#1f1f1f;border-bottom:1px solid #333}
.card-body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.card-body p{color:var(--c-text-dim)}
.card-body .ph{margin-top:auto;align-self:flex-start}

.why-list{list-style:none;padding:0;margin:44px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:48px;max-width:960px}
.why-list li{border-top:2px solid #444;padding-top:24px}
.why-icon{width:36px;height:36px;fill:none;stroke:var(--c-accent);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:14px}
.why-list p{color:var(--c-text-dim);font-size:.98rem}

.contact{background:var(--c-black)}
.contact-inner{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:start}
.contact-list{display:grid;grid-template-columns:auto 1fr;gap:14px 24px;margin:32px 0 0}
.contact-list dt{font-weight:600;color:var(--c-mid);font-size:.92rem;padding-top:2px}
.contact-list dd{margin:0}
.contact-list a{color:var(--c-white);text-decoration-color:var(--c-accent);text-underline-offset:4px}
.contact-list a:hover{color:var(--c-accent)}
.contact-cta{background:var(--c-char);border-radius:var(--radius);padding:36px;border-top:3px solid var(--c-accent);margin-top:8px}
.cta-title{font-family:var(--f-display);font-weight:700;font-size:1.6rem;line-height:1.2;letter-spacing:.02em;margin:0}
html[lang^="zh"] .cta-title{font-size:1.35rem;line-height:1.5}
.contact-cta .cta-row{margin-top:24px}
/* placeholders: clearly visible, search for class "ph" to find all */
.ph{display:inline-block;font-size:.82rem;color:#f0b429;border:1px dashed #b08820;border-radius:var(--radius);padding:3px 8px;background:rgba(240,180,41,.06)}
.light .ph{color:#8a5a00}

.site-footer{background:#111;color:var(--c-mid);padding:44px 0;border-top:1px solid #2a2a2a}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.footer-brand{display:flex;align-items:center;gap:16px}
.footer-brand img{width:56px;height:56px}
.footer-brand p{margin:0;color:var(--c-white);font-family:var(--f-display);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.footer-inner > p{margin:0}
.small{font-size:.85rem}

/* restrained scroll fade-in (only when JS is running) */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .reveal{opacity:1;transform:none;transition:none}.btn:hover{transform:none}}

/* responsive */
@media (max-width:860px){
  .cards{grid-template-columns:1fr}
  .menu-toggle{display:block}
  .nav{position:absolute;top:var(--header-h);left:0;right:0;background:var(--c-black);flex-direction:column;gap:0;border-bottom:1px solid #333;display:none}
  .nav.open{display:flex}
  .nav a{padding:15px 24px;border-top:1px solid #2c2c2c}
  .hero-inner,.about-grid,.contact-inner{grid-template-columns:1fr}
  .hero-inner{grid-template-areas:"visual" "text";padding-top:32px;padding-bottom:64px;gap:20px}
  .hero-visual img{margin:0;width:160px}
  .section{padding:64px 0}
  .about-grid,.contact-inner{gap:40px}
}
@media (max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .cards,.why-list{grid-template-columns:1fr}
  .why-list{gap:32px}
  .header-inner{gap:12px}
  .brand img{width:38px;height:38px}
  .brand-name{font-size:1.3rem}
  .brand-cn{display:none}
  .cta-row .btn{flex:1;text-align:center;white-space:nowrap;padding:13px 14px}
  .contact-cta{padding:24px}
  .contact-list{grid-template-columns:1fr;gap:2px}
  .contact-list dd{margin-bottom:12px}
}