* { box-sizing: border-box; margin: 0; padding: 0; }
:root { --accent: #e11d48; --ink: #1f2937; --muted: #6b7280; --bg: #ffffff; --soft: #f8fafc; --line: #e5e7eb; }
body { font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.92); backdrop-filter: blur(6px); z-index: 10; }
nav .brand { font-weight: 800; font-size: 20px; color: var(--accent); }
nav .nav-right { display: flex; align-items: center; gap: 22px; }
nav a.link { color: var(--muted); font-size: 15px; }
nav a.link:hover { color: var(--ink); }
.lang-toggle button { border: 1px solid var(--line); background: #fff; color: var(--muted); padding: 5px 12px; font-size: 13px; cursor: pointer; }
.lang-toggle button:first-child { border-radius: 6px 0 0 6px; }
.lang-toggle button:last-child { border-radius: 0 6px 6px 0; border-left: none; }
.lang-toggle button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.hero { padding: 72px 0 56px; background: linear-gradient(180deg, var(--soft), #fff); }
.hero .eyebrow { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: .04em; margin-bottom: 14px; }
.hero h1 { font-size: 40px; line-height: 1.2; max-width: 760px; }
.hero p { color: var(--muted); font-size: 17px; max-width: 640px; margin: 18px 0 28px; }
.btn-primary { display: inline-block; background: var(--accent); color: #fff; padding: 13px 26px; border-radius: 8px; font-weight: 600; font-size: 15px; }
.btn-primary:hover { opacity: .92; }
.btn-ghost { display: inline-block; border: 1px solid var(--line); padding: 13px 26px; border-radius: 8px; font-weight: 600; font-size: 15px; margin-left: 12px; }
.section { padding: 56px 0; }
.section-title { font-size: 26px; font-weight: 700; margin-bottom: 28px; }
.section-title small { display: block; color: var(--muted); font-weight: 400; font-size: 15px; margin-top: 6px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 8px; }
.stat { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 22px; text-align: center; }
.stat .num { font-size: 28px; font-weight: 800; color: var(--accent); }
.stat .lbl { color: var(--muted); font-size: 14px; margin-top: 6px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 22px; transition: .15s; }
.card:hover { border-color: var(--accent); box-shadow: 0 6px 20px rgba(0,0,0,.06); }
.card-title { font-weight: 700; font-size: 17px; margin-bottom: 8px; }
.card-desc { color: var(--muted); font-size: 14px; }
.certs { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.cert { border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px; font-size: 14px; font-weight: 600; color: var(--ink); background: var(--soft); }
.contact { background: var(--soft); border-top: 1px solid var(--line); }
.contact .row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact .k { color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.contact .v { font-size: 16px; font-weight: 600; }
.contact a.v { color: var(--accent); }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 28px 20px; border-top: 1px solid var(--line); }
footer a { color: var(--accent); }
@media (max-width: 720px) { .hero h1 { font-size: 30px; } .stats, .grid, .contact .row { grid-template-columns: repeat(2, 1fr); } nav .nav-right { gap: 12px; } nav a.link { display: none; } }