:root {
  --bg: #090d0b;
  --panel: #111714;
  --line: rgba(255, 255, 255, 0.12);
  --muted: #a2ada7;
  --text: #f4f7f5;
  --accent: #78ffad;
  --accent-soft: #b8ffd5;
  --black: #050706;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

.site-header,
main,
footer { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }

.site-header {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 5;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: .82rem; letter-spacing: .16em; font-weight: 700; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--black);
  background: var(--accent);
  font-size: .78rem;
  letter-spacing: -.06em;
  box-shadow: 0 0 24px rgba(120, 255, 173, .2);
}
nav { display: flex; gap: 36px; font-size: .9rem; color: var(--muted); }
nav a, .header-contact { transition: color .2s ease; }
nav a:hover { color: var(--text); }
.header-contact { padding: 9px 16px; border: 1px solid rgba(120,255,173,.5); border-radius: 999px; color: var(--accent); font-size: .86rem; }
.header-contact:hover { background: var(--accent); color: var(--black); }

.hero {
  min-height: 690px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}
.eyebrow { margin: 0 0 20px; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .75rem; font-weight: 700; letter-spacing: .17em; }
.eyebrow span { width: 26px; height: 1px; background: var(--accent); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 26px; font-size: clamp(4rem, 8vw, 7.6rem); line-height: .88; letter-spacing: -.065em; font-weight: 700; }
h1 em { color: var(--accent); font-style: normal; font-weight: 500; }
.hero-lead { max-width: 590px; margin-bottom: 34px; font-size: 1.1rem; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 56px; padding: 0 22px; border: 1px solid transparent; border-radius: 3px; display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; cursor: pointer; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: var(--black); box-shadow: 0 14px 44px rgba(120, 255, 173, .14); }
.button-primary:hover { background: #9affc0; }
.button-secondary { background: transparent; border-color: var(--line); color: var(--text); }
.button-secondary:hover, .button-ghost:hover { border-color: rgba(120,255,173,.65); }
.microcopy { margin: 14px 0 0; color: #77817c; font-size: .76rem; }

.hero-visual { position: relative; min-height: 520px; display: grid; place-items: center; isolation: isolate; }
.glow { position: absolute; width: 340px; height: 340px; border-radius: 50%; background: rgba(74, 255, 146, .15); filter: blur(70px); z-index: -2; }
.orbit { position: absolute; border: 1px solid rgba(120,255,173,.18); border-radius: 50%; }
.orbit-one { width: 430px; height: 430px; animation: pulse 6s ease-in-out infinite; }
.orbit-two { width: 330px; height: 330px; border-style: dashed; animation: spin 28s linear infinite; }
.core-card {
  width: min(320px, 78vw);
  aspect-ratio: .78;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(145deg, rgba(25,34,29,.94), rgba(8,12,10,.97));
  border: 1px solid rgba(120,255,173,.32);
  border-radius: 10px;
  box-shadow: 0 32px 90px rgba(0,0,0,.58), inset 0 1px rgba(255,255,255,.07);
  transform: rotate(3deg);
}
.core-top, .core-bottom { display: flex; align-items: center; justify-content: space-between; }
.core-icon { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid var(--accent); border-radius: 50%; color: var(--accent); font-size: 1.7rem; font-weight: 400; }
.core-status { color: var(--muted); font-size: .72rem; letter-spacing: .08em; }
.core-status i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.core-name { font-size: 3.1rem; line-height: .98; letter-spacing: -.055em; }
.core-name strong { color: var(--accent); font-weight: 500; }
.core-bottom { padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
.floating-note { position: absolute; padding: 10px 14px; border: 1px solid var(--line); background: rgba(9,13,11,.82); backdrop-filter: blur(10px); color: var(--muted); font-size: .77rem; letter-spacing: .08em; }
.floating-note span { color: var(--accent); margin-right: 8px; }
.note-one { top: 13%; left: 5%; }
.note-two { right: 1%; top: 44%; }
.note-three { bottom: 9%; left: 13%; }

.trust-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.trust-strip div { padding: 26px 28px; border-right: 1px solid var(--line); }
.trust-strip div:last-child { border-right: 0; }
.trust-strip strong, .trust-strip span { display: block; }
.trust-strip strong { margin-bottom: 2px; font-size: .95rem; }
.trust-strip span { color: var(--muted); font-size: .82rem; }

.section { padding: 120px 0; border-bottom: 1px solid var(--line); }
.service { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; }
.section-heading h2, .safety h2, .closing h2 { margin-bottom: 0; font-size: clamp(2.5rem, 5vw, 4.8rem); line-height: 1.02; letter-spacing: -.055em; }
.section-heading.compact { margin-bottom: 48px; }
.service-copy { padding-bottom: 8px; color: var(--muted); font-size: 1.03rem; }
.service-copy p { max-width: 520px; }
.text-link { display: inline-flex; gap: 12px; margin-top: 16px; padding-bottom: 5px; border-bottom: 1px solid var(--accent); color: var(--accent); font-weight: 700; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.step { min-height: 330px; padding: 28px; display: flex; flex-direction: column; border: 1px solid var(--line); background: rgba(255,255,255,.015); }
.step.featured { background: var(--accent); color: var(--black); }
.step-index { font-size: .74rem; letter-spacing: .14em; opacity: .62; }
.step-icon { margin: 46px 0 42px; font-size: 2rem; }
.step h3 { margin-bottom: 10px; font-size: 1.45rem; letter-spacing: -.025em; }
.step p { margin-bottom: 0; color: var(--muted); font-size: .92rem; }
.step.featured p { color: rgba(5,7,6,.68); }

.safety { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; align-items: center; }
.safety-number { min-height: 310px; display: grid; place-items: center; background: repeating-linear-gradient(-45deg, var(--accent), var(--accent) 2px, #68eba0 2px, #68eba0 12px); color: var(--black); font-size: clamp(3rem, 7vw, 6rem); font-weight: 800; line-height: .84; letter-spacing: -.07em; text-align: center; }
.safety-content > p:last-child { max-width: 650px; margin: 26px 0 0; color: var(--muted); }

.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { padding: 28px 4px; list-style: none; display: flex; justify-content: space-between; gap: 24px; cursor: pointer; font-size: 1.06rem; font-weight: 600; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--accent); font-size: 1.5rem; font-weight: 400; transition: transform .25s ease; }
details[open] summary span { transform: rotate(45deg); }
details p { max-width: 760px; padding: 0 4px 28px; margin: 0; color: var(--muted); }

.closing { display: flex; justify-content: space-between; align-items: end; gap: 64px; }
.closing-actions { display: grid; gap: 10px; min-width: 290px; }
.button-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.button-ghost b { color: var(--accent); font-size: .82rem; }

footer { min-height: 170px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #77817c; font-size: .75rem; }
footer p { margin: 0; }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 30; transform: translate(-50%, 140%); padding: 12px 18px; background: var(--text); color: var(--black); border-radius: 4px; font-size: .88rem; font-weight: 700; opacity: 0; transition: .3s ease; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { transform: scale(1.04); opacity: .55; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }

@media (max-width: 900px) {
  nav { display: none; }
  .hero { grid-template-columns: 1fr; padding: 92px 0 48px; }
  .hero-visual { min-height: 500px; }
  .service, .safety { grid-template-columns: 1fr; gap: 48px; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: 250px; }
  .step-icon { margin: 28px 0; }
  .closing { align-items: stretch; flex-direction: column; }
  .closing-actions { width: 100%; }
}

@media (max-width: 640px) {
  .site-header, main, footer { width: min(100% - 28px, 1180px); }
  .site-header { height: 72px; }
  .header-contact { padding: 7px 12px; }
  h1 { font-size: clamp(3.6rem, 19vw, 5.5rem); }
  .hero { min-height: auto; padding-top: 70px; }
  .hero-lead { font-size: 1rem; }
  .hero-actions, .hero-actions .button { width: 100%; }
  .hero-visual { min-height: 430px; margin-top: 6px; }
  .core-card { width: 245px; padding: 22px; }
  .core-name { font-size: 2.5rem; }
  .orbit-one { width: 330px; height: 330px; }
  .orbit-two { width: 275px; height: 275px; }
  .floating-note { font-size: .68rem; }
  .trust-strip { grid-template-columns: 1fr; }
  .trust-strip div { border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-strip div:last-child { border-bottom: 0; }
  .section { padding: 84px 0; }
  .section-heading h2, .safety h2, .closing h2 { font-size: 2.8rem; }
  .safety-number { min-height: 230px; }
  footer { padding: 42px 0; flex-direction: column; align-items: flex-start; }
}