:root{--ink:#16243a;--muted:#64748b;--navy:#071d36;--blue:#087fc2;--cyan:#32c5d7;--ice:#e9f6fb;--line:#dceaf1}
*{box-sizing:border-box}body{margin:0;background:#f2f7fa;color:var(--ink);font:16px/1.75 Inter,Segoe UI,Arial,sans-serif}
.top{color:#fff;background:radial-gradient(circle at 82% 20%,#27bad0 0,#087fc2 30%,#073b68 68%,#061b32 100%)}
.wrap{max-width:1120px;margin:auto;padding:24px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.2px}
.mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(145deg,#b9f4f6,#35c7d8);display:grid;place-items:center;color:#063455;font-size:21px;box-shadow:0 7px 16px #04172c77}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;padding:42px 0 50px}
.kicker{text-transform:uppercase;letter-spacing:1.7px;color:#bceef4;font-size:12px;font-weight:800}
h1{font-size:clamp(28px,4vw,44px);line-height:1.13;margin:12px 0;letter-spacing:-.7px}.lead{color:#e0f6fb;max-width:680px}
.art{min-height:220px;border:1px solid #ffffff42;border-radius:28px;background:linear-gradient(145deg,#7de0e5,#188fc8 52%,#174f89);display:grid;place-items:center;position:relative;box-shadow:0 20px 45px #03172d77}
.stack{width:190px;height:132px;position:relative;display:grid;place-items:center}
.disk{position:absolute;width:150px;height:88px;border-radius:17px;background:linear-gradient(145deg,#fff,#dcecf5);border:2px solid #fff;box-shadow:0 12px 22px #06233e66;display:grid;place-items:center;color:#0878aa;font-size:43px}
.disk.back{transform:translate(-17px,-14px) rotate(-9deg);opacity:.82}.disk.front{transform:translate(14px,13px) rotate(8deg)}
.buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 19px;border-radius:13px;text-decoration:none;font-weight:800;color:#07375a;background:linear-gradient(#fff,#dceefa);border:1px solid #fff;border-bottom:4px solid #a9ccdf;box-shadow:0 7px 0 #031a3344,0 12px 22px #031a3344}
.btn.primary{background:linear-gradient(#c7fbf4,#5bd6d1);border-bottom-color:#24a9a8}
main{max-width:900px;margin:34px auto;padding:0 20px}.article,.index-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px 42px;box-shadow:0 14px 45px #0c41620c}
.tip{background:#ecfaff;border-left:4px solid #20a9c7;padding:15px 18px;border-radius:10px;margin-bottom:24px}
h2{font-size:23px;line-height:1.3;margin:30px 0 10px;color:#075b8b}h3{font-size:18px;margin:22px 0 6px}p{margin:0 0 15px}
.index{max-width:1120px;margin:30px auto;padding:0 24px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px}
.grid a{padding:10px 12px;text-decoration:none;border:1px solid var(--line);border-radius:10px;color:#075b8b}.grid a:hover{background:#effaff;border-color:#9ed9e9}
footer{text-align:center;color:var(--muted);padding:28px 16px;font-size:13px}
@media(max-width:720px){.hero{grid-template-columns:1fr}.art{min-height:160px}.article,.index-card{padding:25px 22px}.grid{grid-template-columns:1fr}}