*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',sans-serif;background:#fafaf9;color:#1c1917;line-height:1.8}
a{color:#0369a1;text-decoration:none;font-weight:700}
a:hover{color:#0284c7}
.stripe{background:#0369a1;padding:9px 36px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.stripe .sl{font-size:0.88rem;font-weight:700;color:#fff}
.stripe .sr{display:flex;gap:20px}
.stripe .sr span{color:rgba(255,255,255,0.6);font-size:0.78rem}
.nav{background:#fff;border-bottom:2px solid #e7f5ff;padding:0 36px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:99;box-shadow:0 1px 6px rgba(3,105,161,0.07)}
.nav-logo{font-size:1.1rem;font-weight:800;color:#1c1917;padding:13px 0}
.nav-logo em{color:#0369a1;font-style:normal}
.nav-links a{color:#64748b;font-size:0.84rem;padding:8px 12px;text-decoration:none;font-weight:600;border-radius:6px;display:inline-block;transition:all .2s}
.nav-links a:hover{background:#e0f2fe;color:#0369a1}
.hero{background:linear-gradient(135deg,#0c4a6e 0%,#0369a1 60%,#0284c7 100%);padding:76px 36px;color:#fff;position:relative;overflow:hidden}
.hero::before{content:'✈';position:absolute;right:40px;top:50%;transform:translateY(-50%);font-size:14rem;opacity:0.06}
.hero-inner{max-width:980px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:52px;align-items:center;position:relative;z-index:1}
@media(max-width:760px){.hero-inner{grid-template-columns:1fr}}
.hero-chip{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.25);color:#bae6fd;font-size:0.7rem;font-weight:700;padding:5px 14px;border-radius:30px;margin-bottom:18px;letter-spacing:1px}
.hero h1{font-size:clamp(1.8rem,3.5vw,2.7rem);font-weight:800;line-height:1.2;margin-bottom:14px}
.hero h1 span{color:#7dd3fc}
.hero-p{color:rgba(255,255,255,0.8);font-size:0.97rem;max-width:460px}
.data-card{background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.2);border-radius:14px;padding:24px 22px}
.data-card h3{color:#bae6fd;font-size:0.88rem;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.15)}
.dc-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,0.08);font-size:0.84rem}
.dc-row:last-child{border-bottom:none}
.dc-row .dl{color:rgba(255,255,255,0.65)}
.dc-row .dv{color:#7dd3fc;font-weight:700}
.intro-wrap{max-width:860px;margin:0 auto;padding:44px 36px 0}
.intro-card{background:#fff;border-radius:12px;padding:28px 32px;box-shadow:0 4px 20px rgba(3,105,161,0.1);border-left:5px solid #0369a1;font-size:1.04rem;color:#1c1917;line-height:1.85}
.section{padding:60px 36px}
.section.alt{background:#fff}
.wrap{max-width:900px;margin:0 auto}
.chip{display:inline-block;background:#e0f2fe;color:#0369a1;font-size:0.7rem;font-weight:700;letter-spacing:2px;padding:4px 12px;border-radius:20px;margin-bottom:14px}
.sh{font-size:1.65rem;color:#1c1917;margin-bottom:12px;font-weight:800}
.tip-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:28px}
.tg{background:#fff;border:1px solid #e7f5ff;border-radius:10px;padding:20px 18px;border-top:2px solid #0369a1}
.tg h4{color:#1c1917;font-size:0.9rem;font-weight:700;margin-bottom:6px}
.tg p{color:#64748b;font-size:0.87rem;margin:0;line-height:1.6}
.note{background:#e0f2fe;border-left:4px solid #0369a1;border-radius:0 10px 10px 0;padding:20px 24px;margin:24px 0;font-size:0.96rem;color:#0c4a6e}
.note strong{color:#0369a1}
h2{font-size:1.4rem;color:#1c1917;margin:32px 0 14px;padding-bottom:8px;border-bottom:2px solid #e7f5ff;font-weight:800}
p{margin-bottom:18px;font-size:0.96rem;color:#64748b}
footer{background:#0c4a6e;padding:24px 36px;text-align:center;border-top:3px solid #0369a1}
footer p{color:#1e3a5f;font-size:0.82rem;margin:0}