:root {
  --ink: #e9f3ff;
  --muted: #9fb0c6;
  --bg: #07101f;
  --panel: #101d31;
  --panel-2: #142640;
  --line: rgba(255, 255, 255, 0.13);
  --cyan: #61e6d2;
  --blue: #73a8ff;
  --orange: #ffb86b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  --radius: 24px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(70, 141, 255, 0.17), transparent 31rem),
    radial-gradient(circle at 92% 22%, rgba(97, 230, 210, 0.11), transparent 30rem),
    var(--bg);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.7;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button, a { font: inherit; }
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 99;
  transform: translateY(-160%);
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--cyan);
  color: #03131d;
}
.skip-link:focus { transform: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 31, 0.82);
  backdrop-filter: blur(18px);
}
.nav {
  width: min(calc(100% - 32px), var(--max));
  min-height: 74px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--cyan); }
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  background: var(--panel);
  padding: 7px 10px;
}
main { overflow: hidden; }
.wrap { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
.hero {
  width: min(calc(100% - 32px), var(--max));
  min-height: 650px;
  margin: auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(36px, 7vw, 90px);
  padding: 70px 0;
}
.eyebrow, .tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid rgba(97, 230, 210, 0.34);
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--cyan);
  background: rgba(97, 230, 210, 0.07);
  font-size: 0.82rem;
  font-weight: 750;
}
h1, h2, h3 { line-height: 1.16; letter-spacing: -0.035em; }
h1 { margin: 20px 0; font-size: clamp(2.7rem, 6vw, 5.8rem); }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.6rem); }
h3 { margin: 10px 0; font-size: 1.35rem; }
.lead { max-width: 680px; color: var(--muted); font-size: clamp(1.04rem, 2vw, 1.2rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--panel);
  text-decoration: none;
  font-weight: 760;
}
.button.primary { border-color: transparent; color: #04121b; background: var(--cyan); }
.button:hover, .button:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.24); }
.quick-stats { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: .9rem; }
.quick-stats strong { color: var(--ink); }
.hero-art {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(115,168,255,.14), rgba(97,230,210,.06));
  box-shadow: var(--shadow);
}
.hero-art img { width: 880px; height: auto; aspect-ratio: 44 / 35; object-fit: cover; border-radius: 20px; }
.hero-art::after {
  content: "mihomo core";
  position: absolute;
  right: -14px;
  bottom: 28px;
  padding: 9px 14px;
  border-radius: 12px;
  color: #07101f;
  background: var(--orange);
  font-size: .82rem;
  font-weight: 800;
}
.section { padding: 100px 0; }
.section.alt { border-block: 1px solid var(--line); background: rgba(255,255,255,.018); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}
.section-head p { max-width: 560px; margin: 0; color: var(--muted); }
.story-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(310px, 42%);
  gap: 18px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-snap-type: inline mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--blue) transparent;
  padding: 6px 4px 24px;
}
.story-rail:focus-visible { outline: 3px solid var(--cyan); outline-offset: 8px; }
.story-card {
  min-height: 310px;
  scroll-snap-align: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 38px);
  background: linear-gradient(145deg, var(--panel-2), var(--panel));
  box-shadow: var(--shadow);
}
.story-card .number {
  display: block;
  color: var(--blue);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.story-card p, .muted { color: var(--muted); }
.story-card ul { padding-left: 20px; color: var(--muted); }
.story-card .button { margin-top: 14px; }
.rail-hint { margin: 10px 0 0; color: var(--muted); font-size: .84rem; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.topic-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  background: rgba(16, 29, 49, .68);
  text-decoration: none;
}
.topic-card:hover { border-color: rgba(97,230,210,.5); }
.detail {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 60px;
  align-items: start;
}
.detail-list { margin: 0; padding: 0; list-style: none; }
.detail-list li { padding: 20px 0; border-bottom: 1px solid var(--line); }
.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 34px; }
.platform {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  background: var(--panel);
}
.platform span { display: block; color: var(--muted); font-size: .88rem; }
.faq { max-width: 850px; }
details { border-bottom: 1px solid var(--line); padding: 22px 0; }
summary { cursor: pointer; font-weight: 760; }
details p { color: var(--muted); }
.page-hero { padding: 90px 0 58px; }
.page-hero h1 { max-width: 900px; font-size: clamp(2.7rem, 6vw, 5rem); }
.page-hero .lead { max-width: 760px; }
.notice {
  border-left: 3px solid var(--orange);
  border-radius: 0 14px 14px 0;
  padding: 18px 20px;
  color: var(--muted);
  background: rgba(255,184,107,.08);
}
.code {
  overflow-wrap: anywhere;
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--cyan);
  background: rgba(0,0,0,.26);
  font-family: ui-monospace, Consolas, monospace;
  font-size: .86rem;
}
.site-footer { border-top: 1px solid var(--line); padding: 64px 0 28px; background: #050c17; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--cyan); }
.legal { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line); color: #7f90a7; font-size: .82rem; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 66px;
    right: 16px;
    width: min(300px, calc(100% - 32px));
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #0c1829;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 9px; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 54px; }
  .hero-art { max-width: 650px; }
  .section { padding: 76px 0; }
  .story-rail { grid-auto-columns: minmax(290px, 78%); }
  .detail, .grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  h1 { font-size: 2.75rem; }
  .section-head { display: block; }
  .section-head p { margin-top: 14px; }
  .story-rail { grid-auto-columns: 88%; }
  .story-card { min-height: 350px; }
  .platform-grid, .footer-grid { grid-template-columns: 1fr; }
  .quick-stats { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .story-rail { scroll-snap-type: none; }
  .button:hover { transform: none; }
}