:root {
  --brand: #0b3a6f;
  --brand-2: #1e6fe0;
  --accent: #12b3a6;
  --ink: #0f1b2a;
  --muted: #5d6b7e;
  --line: #e8edf4;
  --bg: #f6f8fc;
  --card: #ffffff;
  --gold: #f0a83c;
  --navy: #071b33;
  --shadow-1: 0 1px 2px rgba(13,32,64,.05), 0 10px 28px rgba(13,32,64,.06);
  --shadow-2: 0 24px 56px rgba(13,32,64,.14);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background: var(--bg); line-height: 1.65;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 22px; }
img { max-width: 100%; }

/* topbar */
.topbar { background: var(--navy); color: #a9bdd3; font-size: 12.5px; padding: 8px 0; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.topbar a { color: #fff; }
.topbar .sep { opacity: .4; margin: 0 9px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.9); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 12px; padding-bottom: 12px; }
.brand { font-weight: 800; font-size: 19px; color: var(--brand); letter-spacing: .3px; display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(140deg, var(--brand-2), var(--brand)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 17px; box-shadow: 0 8px 18px rgba(30,111,224,.35); }
.brand small { display: block; font-size: 10.5px; color: var(--muted); font-weight: 600; letter-spacing: 2.4px; }
.nav { display: flex; align-items: center; gap: 22px; font-weight: 600; font-size: 14.5px; }
.nav a { color: var(--ink); }
.nav a:hover { color: var(--brand-2); }
.nav .cta { background: linear-gradient(135deg, var(--brand-2), var(--brand)); color: #fff; padding: 10px 20px; border-radius: 11px; box-shadow: 0 10px 22px rgba(30,111,224,.28); transition: transform .15s, box-shadow .2s; }
.nav .cta:hover { transform: translateY(-1px); box-shadow: 0 14px 28px rgba(30,111,224,.36); }
.switch { display: flex; align-items: center; gap: 6px; }
.switch button { border: 1px solid var(--line); background: #fff; color: var(--muted); border-radius: 8px; padding: 5px 9px; font-size: 12.5px; font-weight: 600; cursor: pointer; transition: .15s; }
.switch button.on { background: var(--brand); color: #fff; border-color: var(--brand); }

/* buttons */
.btn { display: inline-block; background: linear-gradient(135deg, var(--brand-2), var(--brand)); color: #fff; padding: 13px 30px; border-radius: 12px; font-weight: 700; font-size: 15px; border: 0; cursor: pointer; box-shadow: 0 12px 26px rgba(30,111,224,.28); transition: transform .15s, box-shadow .2s, filter .2s; }
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 16px 34px rgba(30,111,224,.34); }
.btn.ghost { background: #fff; color: var(--brand); border: 1.5px solid var(--brand); box-shadow: var(--shadow-1); }
.btn.gold { background: linear-gradient(135deg, #f7c04a, var(--gold)); color: #3a2a00; box-shadow: 0 12px 26px rgba(240,168,60,.3); }

/* hero */
.hero { position: relative; color: #fff; overflow: hidden; background: linear-gradient(140deg, #082646 0%, #0b3a6f 45%, #123f7d 100%); padding: 92px 0 84px; }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(760px 460px at 88% -10%, rgba(30,111,224,.5), transparent 62%), radial-gradient(700px 420px at 6% 120%, rgba(18,179,166,.28), transparent 60%); }
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 46px; align-items: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 7px 15px; border-radius: 999px; font-size: 13px; margin-bottom: 20px; }
.hero h1 { font-size: 46px; line-height: 1.16; margin: 0 0 18px; font-weight: 800; letter-spacing: -.8px; }
.hero p.lead { font-size: 17px; opacity: .92; margin: 0 0 28px; max-width: 560px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; border-radius: 22px; box-shadow: var(--shadow-2); display: block; }
.hero-card { margin-top: 18px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); border-radius: 18px; padding: 20px 22px; backdrop-filter: blur(6px); }
.hero-card h3 { margin: 0 0 8px; font-size: 14px; opacity: .85; font-weight: 600; }
.hero-card .big-phone { font-size: 25px; font-weight: 800; letter-spacing: .4px; }
.hero-card .row { margin-top: 9px; font-size: 13.5px; opacity: .92; }

/* section */
.section { padding: 76px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 3px; font-size: 12.5px; text-transform: uppercase; margin: 0 0 10px; }
.section h2 { font-size: 32px; margin: 0 0 12px; font-weight: 800; letter-spacing: -.5px; }
.section .lead { color: var(--muted); margin: 0 0 38px; max-width: 680px; font-size: 16px; }
.muted { color: var(--muted); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stats .s { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 20px; text-align: center; box-shadow: var(--shadow-1); }
.stats .n { font-size: 34px; font-weight: 800; background: linear-gradient(135deg, var(--brand-2), var(--brand)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats .l { color: var(--muted); font-size: 14px; margin-top: 4px; }

/* advantages */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.adv { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; box-shadow: var(--shadow-1); transition: transform .18s, box-shadow .22s; }
.adv:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.adv .ico { width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(140deg, #e6f6f4, #d5efe9); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 25px; margin-bottom: 16px; }
.adv h3 { margin: 0 0 8px; font-size: 17.5px; }
.adv p { margin: 0; color: var(--muted); font-size: 14px; }

/* product cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 22px; }
.pcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow-1); transition: transform .18s, box-shadow .22s; }
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.pcard .thumb { aspect-ratio: 4 / 3; background: linear-gradient(135deg, #eef4fc, #dbe8fa); overflow: hidden; }
.pcard .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.pcard:hover .thumb img { transform: scale(1.05); }
.pcard .thumb.emoji { display: flex; align-items: center; justify-content: center; font-size: 46px; }
.pcard .pbody { padding: 16px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.pcard h3 { margin: 0 0 8px; font-size: 16px; line-height: 1.4; }
.pcard .pmeta { color: var(--muted); font-size: 12.5px; margin: 2px 0; }
.pcard .pprice { margin-top: 10px; font-weight: 800; color: var(--brand-2); font-size: 17px; }
.pcard .plink { margin-top: auto; padding-top: 14px; font-size: 13.5px; font-weight: 700; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow-1); }
.step .num { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--brand-2), var(--brand)); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px; box-shadow: 0 10px 20px rgba(30,111,224,.3); }
.step h3 { margin: 0 0 6px; font-size: 16px; } .step p { margin: 0; color: var(--muted); font-size: 14px; }

/* quotes */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-1); }
.quote .stars { color: var(--gold); letter-spacing: 2px; }
.quote p { margin: 12px 0 16px; font-size: 14.5px; }
.quote .who { font-weight: 700; font-size: 14px; } .quote .who small { display: block; color: var(--muted); font-weight: 400; }

/* cta */
.cta-band { position: relative; overflow: hidden; background: radial-gradient(600px 300px at 84% -20%, rgba(255,255,255,.22), transparent), linear-gradient(135deg, var(--brand-2), var(--brand)); color: #fff; border-radius: 24px; padding: 52px 40px; text-align: center; box-shadow: var(--shadow-2); }
.cta-band h2 { color: #fff; margin: 0 0 8px; font-size: 30px; } .cta-band p { opacity: .94; margin: 0 0 22px; }
.cta-band .phone { font-size: 26px; font-weight: 800; margin: 0 12px; }

/* faq */
.faq { max-width: 840px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-bottom: 12px; box-shadow: var(--shadow-1); }
.faq summary { font-weight: 700; cursor: pointer; font-size: 15px; }
.faq p { color: var(--muted); margin: 10px 0 0; }

/* footer */
footer { background: linear-gradient(180deg, var(--navy), #051426); color: #9fb2c8; padding: 60px 0 30px; }
footer .cols { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 30px; }
footer h4 { color: #fff; font-size: 15px; margin: 0 0 16px; }
footer a { color: #a9c9ec; } footer a:hover { color: #fff; }
footer .brand-f { font-weight: 800; color: #fff; font-size: 19px; }
footer .contact-line { margin: 7px 0; font-size: 14px; }
footer .copy { border-top: 1px solid rgba(255,255,255,.1); margin-top: 34px; padding-top: 20px; font-size: 13px; color: #7e93ab; text-align: center; }

/* form */
.form { max-width: 580px; }
.form label { display: block; margin: 16px 0 7px; font-weight: 600; font-size: 14px; }
.form input, .form textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 11px; font-size: 15px; font-family: inherit; background: #fbfcfe; transition: .18s; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--brand-2); background: #fff; box-shadow: 0 0 0 4px rgba(30,111,224,.13); }
.form textarea { min-height: 130px; resize: vertical; }
.form button { margin-top: 20px; }
.notice { margin-top: 16px; padding: 12px 16px; border-radius: 11px; font-size: 14px; display: none; }
.notice.ok { display: block; background: #e6f6ec; color: #1b7a3d; }
.notice.err { display: block; background: #fdecec; color: #b42318; }
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 36px; }
.ccard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-1); }
.ccard .ico { font-size: 24px; } .ccard h4 { margin: 10px 0 6px; } .ccard p { margin: 0; color: var(--muted); font-size: 14px; word-break: break-all; }

@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; } .hero h1 { font-size: 34px; }
  .stats, .adv-grid, .steps, .quotes, footer .cols, .contact-cards { grid-template-columns: 1fr 1fr; }
  .nav { gap: 14px; }
}
@media (max-width: 640px) {
  .nav a:not(.cta) { display: none; }
  .stats, .adv-grid, .steps, .quotes, footer .cols, .contact-cards { grid-template-columns: 1fr; }
  .section { padding: 54px 0; } .hero { padding: 64px 0 60px; } .hero h1 { font-size: 28px; }
  .cta-band { padding: 32px 20px; } .cta-band h2 { font-size: 24px; }
}