/* Tian Group · shared styles for all inner pages */
:root{--ink:#0d1620;--ink-2:#37475a;--muted:#6b7886;--line:#e5e7ec;--surface:#f5f6f8;--bg:#ffffff;--accent:#c8102e;--accent-dark:#9c0c23;--green:#2da06e;--max:1280px;--pad:24px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter","Noto Sans JP","Noto Sans TC",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
body[lang="ja"]{font-family:"Noto Sans JP","Inter",system-ui,sans-serif}
body[lang="zh-TW"]{font-family:"Noto Sans TC","Inter",system-ui,sans-serif}
body[lang="zh-CN"]{font-family:"Noto Sans SC","Noto Sans TC","Inter",system-ui,sans-serif}
body[lang="vi"]{font-family:"Inter","Noto Sans",system-ui,sans-serif}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:600;color:var(--accent)}
h1,h2,h3{font-family:"Playfair Display",Georgia,serif;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin:0}
body[lang="ja"] h1,body[lang="ja"] h2,body[lang="ja"] h3,body[lang="zh-TW"] h1,body[lang="zh-TW"] h2,body[lang="zh-TW"] h3{font-family:inherit}
h1{font-size:clamp(34px,4.6vw,56px);line-height:1.05}
h2{font-size:clamp(26px,3vw,40px);line-height:1.1}
h3{font-size:20px;line-height:1.25}
p{margin:0 0 14px}
.lead{font-size:18px;color:var(--ink-2)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:2px;font-weight:600;font-size:14px;letter-spacing:.04em;text-transform:uppercase;transition:.18s;border:1px solid transparent;white-space:nowrap;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{border-color:rgba(255,255,255,.6);color:#fff}
.btn-light:hover{background:#fff;color:var(--ink)}

/* Top nav */
.topbar{background:var(--ink);color:#cfd6df;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar a{color:#cfd6df;margin-right:16px}
.topbar a:hover{color:#fff}
.lang-switch{display:flex;gap:2px;align-items:center}
.lang-switch button{background:none;border:0;color:#9aa3ad;font:inherit;font-weight:500;padding:4px 8px;cursor:pointer;letter-spacing:.04em}
.lang-switch button.active{color:#fff;border-bottom:2px solid var(--accent)}
.lang-switch button:hover{color:#fff}
nav.main{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:50}
nav.main .wrap{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{display:flex;align-items:center;gap:12px;font-family:"Playfair Display",serif;font-size:22px;font-weight:700;letter-spacing:.04em;color:var(--ink)}
.logo-mark{width:46px;height:46px;display:grid;place-items:center;flex-shrink:0}
.logo-mark img{width:100%;height:100%;object-fit:contain}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-weight:500;font-size:15px;color:var(--ink-2);transition:.15s}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-burger{display:none;background:none;border:0;font-size:26px;cursor:pointer}
@media(max-width:980px){.nav-links{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;flex-direction:column;padding:18px var(--pad);border-bottom:1px solid var(--line);gap:14px}.nav-links.show{display:flex}.nav-burger{display:block}.nav-cta .btn{display:none}}

/* Page hero */
.page-hero{padding:80px 0 64px;background:var(--surface)}
.page-hero.dark{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.page-hero.dark::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(200,16,46,.18) 0%,transparent 60%);pointer-events:none}
.page-hero.dark h1{color:#fff;position:relative;z-index:2}
.page-hero.dark .lead{color:#cdd5dd;position:relative;z-index:2}
.page-hero.dark .breadcrumb{color:#9aa3ad;position:relative;z-index:2}
.page-hero.dark .breadcrumb a{color:#9aa3ad}
.page-hero.dark .breadcrumb a:hover{color:#fff}
.page-hero h1{margin-top:16px;max-width:920px}
.page-hero .lead{margin-top:18px;max-width:780px;font-size:19px}
.breadcrumb{font-size:13px;color:var(--muted);letter-spacing:.04em}
.breadcrumb a:hover{color:var(--accent)}

/* Sections */
section.bd{padding:80px 0;border-top:1px solid var(--line)}
section.tight{padding:48px 0}
section.dark{background:var(--ink);color:#dde2e9}
section.dark h2{color:#fff}
section.dark .lead{color:#9aa3ad}
section.surface{background:var(--surface)}
.head{max-width:760px;margin-bottom:48px}
.head h2{margin-top:14px}
.head p{color:var(--muted);margin-top:14px;font-size:17px}
section.dark .head p{color:#9aa3ad}

/* Footer */
footer{background:#080d14;color:#9aa3ad;padding:64px 0 24px}
footer h4{color:#fff;font-family:Inter,sans-serif;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 16px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:48px}
.foot a{color:#9aa3ad;display:block;padding:4px 0}
.foot a:hover{color:#fff}
.foot small{font-size:13px;line-height:1.6}
.foot-brand .logo{color:#fff;margin-bottom:12px}
.foot-bottom{border-top:1px solid #1d2733;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12px;color:#5e6772}
.social{display:flex;gap:10px;margin-top:14px}
.social a{width:34px;height:34px;border:1px solid #2a3340;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;padding:0}
.social a:hover{background:#fff;color:var(--ink);border-color:#fff}
@media(max-width:880px){.foot{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot{grid-template-columns:1fr}}

/* Float */

/* CTA strip */
.cta-strip{background:var(--ink);color:#fff;padding:80px 0}
.cta-strip .wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:center}
.cta-strip h2{color:#fff}
.cta-strip p{color:#cdd5dd;margin-top:14px;font-size:17px}
.cta-strip .actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;justify-content:center}
@media(max-width:880px){.cta-strip .wrap{grid-template-columns:1fr}}

/* Two-column blocks */
.two{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.two-img{aspect-ratio:4/3;background:#000;overflow:hidden}
.two-img img{width:100%;height:100%;object-fit:cover}
.two-text h2{margin-bottom:18px}
.two-text p{font-size:17px;color:var(--ink-2);margin-bottom:14px}
.two-text b{color:var(--ink)}
@media(max-width:880px){.two{grid-template-columns:1fr;gap:32px}}

/* ===== Image protection — deter drag-to-save & accidental selection ===== */
img{ -webkit-user-drag:none; user-drag:none; -webkit-user-select:none; -moz-user-select:none; user-select:none; -webkit-touch-callout:none; }

.nav-mobile-only{display:none}
@media(max-width:980px){.nav-mobile-only{display:block;color:var(--accent);font-weight:700}}