:root{
  --ink:#1C2B3A;      /* 墨蓝 主色 */
  --copper:#A8844F;   /* 铜金 点缀 */
  --night:#16222F;    /* 夜墨 深底 */
  --ivory:#F4EFE6;    /* 象牙白 */
  --white:#FFFFFF;
  --text:#1C2B3A;
  --muted:#5A6774;
  --line:rgba(28,43,58,.12);
  --zh:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --en:"Montserrat","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:var(--zh);color:var(--text);background:var(--ivory);font-size:16px;line-height:1.85;font-weight:400;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 32px}
.en,.lang-en p,.en-inline,.card__en-title,[class*="-en"]{font-family:var(--en)}

/* Nav */
.nav{position:sticky;top:0;z-index:10;background:rgba(22,34,47,.96);backdrop-filter:blur(6px);border-bottom:1px solid rgba(244,239,230,.08)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:80px}
.nav__logo img{width:176px;height:auto}
.nav__links{display:flex;gap:36px}
.nav__links a{color:rgba(244,239,230,.78);font-size:14px;letter-spacing:.12em;transition:color .2s}
.nav__links a:hover{color:var(--copper)}

/* Hero */
.hero{background:var(--night);color:var(--ivory);padding:120px 0 136px;text-align:center}
.hero__inner{display:flex;flex-direction:column;align-items:center}
.hero__logo{width:300px;height:auto;margin-bottom:64px}
.hero__title{font-size:48px;font-weight:300;letter-spacing:.24em;line-height:1.4;padding-left:.24em}
.hero__title-en{font-size:16px;letter-spacing:.28em;text-transform:uppercase;color:var(--copper);margin-top:14px;font-weight:500}
.rule{display:block;width:48px;height:1px;background:var(--copper);margin:40px auto}
.hero__lead{max-width:640px;font-size:17px;color:rgba(244,239,230,.88);line-height:2}
.hero__lead-en{max-width:640px;font-size:14px;color:rgba(244,239,230,.55);margin-top:14px;line-height:1.8}
.hero__cta{display:flex;gap:16px;margin-top:56px;flex-wrap:wrap;justify-content:center}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 34px;font-size:15px;letter-spacing:.1em;border:1px solid var(--copper);border-radius:2px;transition:all .2s}
.btn span{font-family:var(--en);font-size:12px;letter-spacing:.14em;opacity:.75;text-transform:uppercase}
.btn--primary{background:var(--copper);color:var(--white)}
.btn--primary:hover{background:#94723F;border-color:#94723F}
.btn--ghost{color:var(--ivory);border-color:rgba(244,239,230,.4)}
.btn--ghost:hover{border-color:var(--copper);color:var(--copper)}

/* Sections */
.section{padding:128px 0}
.section--ivory{background:var(--ivory)}
.section--white{background:var(--white)}
.section--ink{background:var(--ink);color:var(--ivory)}
.eyebrow{font-family:var(--en);font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--copper);font-weight:600;margin-bottom:16px}
h2{font-size:34px;font-weight:500;letter-spacing:.12em;line-height:1.4}
.section__head{text-align:center;margin-bottom:72px}
.section__intro{margin-top:18px;color:var(--muted);letter-spacing:.2em;font-size:15px}

/* About */
.about{display:grid;grid-template-columns:1fr 2.2fr;gap:80px}
.about__body{display:grid;gap:40px}
.lang-zh p{font-size:17px;margin-bottom:14px}
.lang-en{border-top:1px solid var(--line);padding-top:32px}
.lang-en p{font-size:14px;color:var(--muted);margin-bottom:12px;line-height:1.8}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--ivory);padding:48px 36px 44px;border-top:2px solid var(--copper);display:flex;flex-direction:column}
.card__no{font-family:var(--en);font-size:13px;letter-spacing:.2em;color:var(--copper);font-weight:600;margin-bottom:24px}
.card h3{font-size:21px;font-weight:500;letter-spacing:.06em;line-height:1.5}
.card__en-title{font-size:13px;color:var(--muted);letter-spacing:.04em;margin:6px 0 24px;font-weight:500}
.card p{font-size:15px;line-height:1.9}
.card p.en{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.75}
.card ul{list-style:none;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.card li{font-size:14px;padding-left:18px;position:relative;margin-bottom:12px;line-height:1.6}
.card li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:1px;background:var(--copper)}
.card li span{display:block;font-family:var(--en);font-size:12px;color:var(--muted)}

/* Values */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.value{padding:44px 28px 8px;border-right:1px solid var(--line)}
.value:last-child{border-right:none}
.value h3{font-size:24px;font-weight:500;letter-spacing:.2em;margin-bottom:18px}
.value h3 span{display:block;font-family:var(--en);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--copper);font-weight:600;margin-top:6px}
.value p{font-size:15px;line-height:1.9}
.value p.en{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7}

/* Contact */
.contact{text-align:center}
.contact__inner{display:flex;flex-direction:column;align-items:center}
.eyebrow--light{color:var(--copper)}
.contact__lead{max-width:560px;margin-top:24px;font-size:16px;color:rgba(244,239,230,.88)}
.contact__lead-en{max-width:560px;margin-top:10px;font-size:13px;color:rgba(244,239,230,.55);line-height:1.8}
.contact__mail{font-family:var(--en);font-size:28px;letter-spacing:.06em;margin:48px 0 40px;border-bottom:1px solid var(--copper);padding-bottom:6px;color:var(--ivory)}
.contact__mail:hover{color:var(--copper)}

/* Footer */
.footer{background:var(--night);color:rgba(244,239,230,.7);padding:80px 0 48px;font-size:14px}
.footer__inner{display:flex;justify-content:space-between;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(244,239,230,.1)}
.footer__brand img{width:176px;margin-bottom:20px}
.footer__name{color:var(--ivory);letter-spacing:.1em;margin-bottom:4px}
.footer__meta{text-align:right}
.footer__meta p{margin-bottom:10px}
.footer__meta a:hover{color:var(--copper)}
.en-inline{font-size:12px;opacity:.8}
.footer__legal{padding-top:32px;font-size:12px;color:rgba(244,239,230,.5);line-height:1.8}
.footer__copy{margin-top:16px;font-family:var(--en);letter-spacing:.06em}

/* Responsive */
@media (max-width:960px){
  .about{grid-template-columns:1fr;gap:32px}
  .cards{grid-template-columns:1fr;gap:20px}
  .values{grid-template-columns:1fr 1fr}
  .value:nth-child(2){border-right:none}
  .value:nth-child(-n+2){border-bottom:1px solid var(--line);padding-bottom:36px}
}
@media (max-width:640px){
  .wrap{padding:0 24px}
  .nav__inner{height:68px}
  .nav__logo img{width:160px}
  .nav__links{display:none}
  .hero{padding:80px 0 96px}
  .hero__logo{width:220px;margin-bottom:48px}
  .hero__title{font-size:30px;letter-spacing:.16em;padding-left:.16em}
  .hero__title-en{font-size:12px;letter-spacing:.2em}
  .hero__lead{font-size:16px}
  .hero__cta{flex-direction:column;width:100%;margin-top:44px}
  .btn{justify-content:center;width:100%}
  .section{padding:88px 0}
  h2{font-size:26px}
  .section__head{margin-bottom:48px}
  .card{padding:36px 26px}
  .values{grid-template-columns:1fr}
  .value{border-right:none;border-bottom:1px solid var(--line);padding:32px 4px}
  .value:last-child{border-bottom:none}
  .contact__mail{font-size:21px}
  .footer__inner{flex-direction:column}
  .footer__meta{text-align:left}
  .footer__brand img{width:160px}
}