:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #0d1a2b;
  --panel-soft: #101f32;
  --line: rgba(156, 208, 236, 0.18);
  --text: #f6fbff;
  --muted: #a8bdcc;
  --cyan: #58e5ff;
  --cyan-deep: #19b8da;
  --gold: #ffd36a;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 2%, rgba(44, 140, 185, 0.22), transparent 30rem),
    radial-gradient(circle at 8% 48%, rgba(51, 229, 255, 0.08), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }
.shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.star-field {
  position: fixed; inset: 0; pointer-events: none; opacity: .55;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.85) 0 1px, transparent 1.4px),
    radial-gradient(circle, rgba(88,229,255,.55) 0 1px, transparent 1.5px);
  background-size: 98px 98px, 151px 151px;
  background-position: 11px 18px, 62px 77px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}
.nav { height: 82px; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 2; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 760; letter-spacing: .04em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; color: var(--bg); background: var(--cyan); border-radius: 50% 50% 50% 14%; box-shadow: 0 0 28px rgba(88,229,255,.35); }
.school-tag, .pill { border: 1px solid var(--line); background: rgba(11, 28, 45, .72); border-radius: 999px; color: var(--muted); font-size: .875rem; padding: 6px 13px; }
.hero { min-height: 640px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr); align-items: center; gap: 80px; padding-block: 74px 100px; position: relative; }
.hero-copy { max-width: 700px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--cyan); font-size: .83rem; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 18px; }
.eyebrow span { display: inline-block; width: 28px; height: 1px; background: var(--cyan); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(3.3rem, 7.2vw, 6.7rem); line-height: .99; letter-spacing: -.065em; margin-bottom: 30px; font-weight: 820; }
h1 em { font-style: normal; color: var(--cyan); text-shadow: 0 0 42px rgba(88,229,255,.18); }
.lead { max-width: 660px; color: #c2d3df; font-size: 1.1rem; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 16px; }
.button { border: 1px solid var(--line); min-height: 48px; padding: 0 20px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; cursor: pointer; transition: transform .2s, border-color .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible { outline: 3px solid rgba(88,229,255,.38); outline-offset: 3px; }
.primary { background: var(--cyan); border-color: var(--cyan); color: #03131b; font-weight: 800; box-shadow: 0 14px 38px rgba(25,184,218,.19); }
.ghost { color: var(--text); background: rgba(8,20,34,.7); }
.ghost:hover { border-color: rgba(88,229,255,.52); }
.microcopy { color: #7891a3; font-size: .84rem; }
.price-card { position: relative; min-height: 430px; padding: 28px; overflow: hidden; border: 1px solid rgba(88,229,255,.23); border-radius: 26px 26px 26px 8px; background: linear-gradient(145deg, rgba(17,43,67,.93), rgba(7,18,31,.95)); box-shadow: var(--shadow); }
.price-card::after { content: ""; position: absolute; inset: auto -20% -36% 10%; height: 280px; border: 1px solid rgba(88,229,255,.16); border-radius: 50%; transform: rotate(-16deg); }
.card-topline { display: flex; justify-content: space-between; color: #8aa5b7; font: 700 .73rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; }
.live-dot::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); margin-right: 7px; box-shadow: 0 0 13px var(--cyan); }
.orbit { position: absolute; width: 210px; height: 210px; top: 66px; right: -30px; border: 1px solid rgba(88,229,255,.22); border-radius: 50%; transform: rotate(-22deg); }
.orbit::before, .orbit::after { content: ""; position: absolute; border: 1px solid rgba(88,229,255,.1); border-radius: 50%; }
.orbit::before { inset: 25px; }
.orbit::after { inset: 55px; }
.planet { position: absolute; width: 78px; height: 78px; border-radius: 50%; inset: 65px; background: radial-gradient(circle at 35% 30%, #c0f7ff, var(--cyan-deep) 34%, #075069 74%); box-shadow: 0 0 45px rgba(88,229,255,.3); }
.satellite { position: absolute; width: 10px; height: 10px; background: var(--gold); border-radius: 50%; top: 20px; left: 42px; box-shadow: 0 0 18px var(--gold); }
.plan-name { margin-top: 155px; margin-bottom: 0; color: var(--muted); }
.price { display: flex; align-items: baseline; gap: 12px; margin: 0 0 15px; }
.price b { font-size: 5.6rem; line-height: 1; letter-spacing: -.07em; }
.price span { color: var(--gold); font-weight: 700; }
.ticket-line { height: 1px; background: repeating-linear-gradient(to right, var(--line) 0 8px, transparent 8px 15px); margin-block: 24px; }
.card-note { color: var(--muted); max-width: 310px; font-size: .94rem; position: relative; z-index: 1; }
.trust-strip { border-block: 1px solid var(--line); background: rgba(4,13,23,.52); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-grid > div { display: flex; align-items: center; gap: 18px; padding: 30px; border-right: 1px solid var(--line); }
.trust-grid > div:last-child { border-right: 0; }
.trust-grid strong { color: var(--cyan); font: 500 1rem/1 ui-monospace, monospace; }
.trust-grid span { color: #c6d4de; line-height: 1.55; }
.section { padding-block: 116px; }
.section-heading { max-width: 650px; margin-bottom: 46px; }
.section-heading h2, .adv-copy h2, .note-card h2, .cta h2 { font-size: clamp(2.15rem, 4.3vw, 4rem); line-height: 1.1; letter-spacing: -.045em; margin-bottom: 18px; }
.section-heading > p:last-child, .adv-copy > p:last-child, .cta > p { color: var(--muted); font-size: 1rem; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.service-card { border: 1px solid var(--line); background: rgba(12,28,45,.74); min-height: 330px; padding: 28px; border-radius: 18px 18px 18px 5px; position: relative; display: flex; flex-direction: column; align-items: flex-start; transition: transform .25s, border-color .25s; }
.service-card:hover { transform: translateY(-5px); border-color: rgba(88,229,255,.4); }
.service-card.featured { background: linear-gradient(150deg, rgba(19,57,79,.9), rgba(11,30,47,.9)); }
.icon-box { width: 48px; height: 48px; border: 1px solid rgba(88,229,255,.35); color: var(--cyan); display: grid; place-items: center; border-radius: 12px 12px 12px 3px; font-size: 1.35rem; }
.service-index { margin: 55px 0 8px; color: #718b9d; font: 650 .72rem/1 ui-monospace, monospace; letter-spacing: .12em; }
.service-card h3 { font-size: 1.45rem; margin-bottom: 10px; }
.service-card > p:not(.service-index) { color: var(--muted); font-size: .95rem; }
.service-card .pill { margin-top: auto; }
.advantages { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: start; border-top: 1px solid var(--line); }
.adv-copy > p:last-child { line-height: 1.85; }
.adv-list { border-top: 1px solid var(--line); }
.adv-item { display: grid; grid-template-columns: 110px 1fr; gap: 26px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.adv-item span { color: var(--cyan); font-weight: 760; }
.adv-item p { margin: 0; color: #bdd0dc; }
.process { padding-top: 30px; }
.section-heading.compact { margin-bottom: 34px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.steps li { display: flex; gap: 18px; min-height: 150px; border-top: 1px solid var(--line); padding: 26px 8px; }
.steps li > span { color: var(--gold); font: 700 1rem/1 ui-monospace, monospace; }
.steps h3 { margin-bottom: 5px; font-size: 1.1rem; }
.steps p { color: var(--muted); font-size: .9rem; }
.note-section { padding-top: 30px; }
.note-card { border: 1px solid rgba(255,211,106,.24); border-radius: 24px 24px 24px 7px; padding: 50px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; background: linear-gradient(135deg, rgba(255,211,106,.07), rgba(10,24,39,.55)); }
.note-card .eyebrow { color: var(--gold); }
.note-card .eyebrow span { background: var(--gold); }
.note-card h2 { font-size: clamp(1.8rem, 3.4vw, 3.2rem); }
.note-card ul { margin: 0; padding-left: 1.2em; color: #c0d1db; }
.note-card li + li { margin-top: 12px; }
.cta { text-align: center; padding: 100px 30px 112px; border-top: 1px solid var(--line); }
.cta .eyebrow { justify-content: center; }
.cta h2 { color: var(--cyan); }
.cta > p { max-width: 590px; margin: 0 auto 26px; }
.button.large { min-height: 54px; padding-inline: 28px; }
.copy-status { min-height: 25px; color: var(--cyan) !important; font-size: .86rem !important; margin-top: 12px !important; }
footer { min-height: 100px; padding-block: 28px; display: flex; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); color: #668094; font-size: .78rem; }
footer p:last-child { text-align: right; max-width: 590px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 65px 85px; }
  .price-card { min-height: 390px; }
  .trust-grid, .service-grid, .steps { grid-template-columns: 1fr; }
  .trust-grid > div { border-right: 0; border-bottom: 1px solid var(--line); padding-inline: 0; }
  .trust-grid > div:last-child { border-bottom: 0; }
  .advantages, .note-card { grid-template-columns: 1fr; gap: 38px; }
  .service-card { min-height: 280px; }
  .service-index { margin-top: 40px; }
  footer { flex-direction: column; }
  footer p:last-child { text-align: left; }
}

@media (max-width: 520px) {
  .shell { width: min(100% - 26px, 1120px); }
  .nav { height: 70px; }
  .school-tag { font-size: .76rem; }
  .hero { padding-top: 46px; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.2rem); }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .price-card { min-height: 370px; padding: 22px; }
  .price b { font-size: 4.7rem; }
  .section { padding-block: 80px; }
  .service-card { min-height: 265px; }
  .note-card { padding: 30px 24px; }
  .adv-item { grid-template-columns: 78px 1fr; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}