:root {
  --bg: #0b0710;
  --panel: #15101d;
  --ink: #fff8f2;
  --muted: #c7b8c7;
  --berry: #ff4e74;
  --berry2: #a9173f;
  --straw: #ffb7c7;
  --line: rgba(255,255,255,.15);
  --shadow: 0 24px 90px rgba(0,0,0,.38);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  overflow-x: hidden;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.72;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-top {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 5vw;
  background: rgba(11,7,16,.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 230px; }
.brand strong { display: block; font-size: 1rem; }
.brand small { display: block; color: var(--straw); font-size: .74rem; }
.bear-mark {
  position: relative;
  width: 38px;
  height: 36px;
  border-radius: 14px 14px 16px 16px;
  background:
    radial-gradient(circle at 32% 42%, #fff8f3 0 6%, transparent 7%),
    radial-gradient(circle at 66% 42%, #fff8f3 0 6%, transparent 7%),
    linear-gradient(145deg, #ff6d89, #9f123a 62%, #4a0d22);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.26), 0 8px 24px rgba(255,78,116,.25);
}
.bear-mark:before,
.bear-mark:after {
  content: "";
  position: absolute;
  top: -7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ff5577;
  border: 2px solid #2b1320;
}
.bear-mark:before { left: 3px; }
.bear-mark:after { right: 3px; }
.bear-mark.small { width: 28px; height: 27px; display: inline-block; vertical-align: middle; margin-right: 8px; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.nav a { padding: 8px 10px; border-radius: 8px; border: 1px solid transparent; color: #f8dce5; font-size: .93rem; }
.nav a:hover { border-color: var(--line); background: rgba(255,255,255,.08); }
.menu { display: none; border: 1px solid var(--line); background: rgba(255,255,255,.08); color: #fff; border-radius: 8px; padding: 8px 12px; }
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 48vw);
  align-items: center;
  min-height: 680px;
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 30%, rgba(255,78,116,.28), transparent 35%),
    linear-gradient(135deg, #0b0710 0%, #160c1b 46%, #2a1020 100%);
}
.hero:after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #ff6f90, transparent);
  opacity: .6;
}
.hero-copy { position: relative; z-index: 2; padding: 94px 0 94px 5vw; max-width: 790px; }
.kicker,
.section-title p,
.inner-hero p {
  margin: 0 0 10px;
  color: var(--straw);
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2.45rem, 3.55vw, 3.15rem);
  line-height: 1.1;
  letter-spacing: 0;
}
.hero h1 span { display: block; overflow-wrap: anywhere; word-break: keep-all; }
.lead { max-width: 680px; color: #f3dce5; font-size: 1.1rem; margin: 24px 0 0; overflow-wrap: anywhere; }
.hero-actions,
.inner-hero nav,
.read-next { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-actions a,
.inner-hero a,
.text-link,
.notice a,
.platform-grid a,
.read-next a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--berry), var(--berry2));
  color: #fff;
  font-weight: 800;
  border: 1px solid rgba(255,255,255,.18);
}
.hero-actions a:nth-child(2),
.inner-hero a:nth-child(n+2) { background: rgba(255,255,255,.08); }
.hero-visual { position: relative; z-index: 1; align-self: stretch; display: grid; place-items: center; padding: 66px 5vw 66px 0; }
.hero-visual img {
  width: min(760px, 48vw);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: var(--shadow);
}
.quick-panel {
  position: absolute;
  right: 5vw;
  bottom: 54px;
  z-index: 3;
  width: min(370px, 42vw);
  padding: 20px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(18,10,20,.72);
  backdrop-filter: blur(18px);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.quick-panel b,
.quick-panel span { display: block; }
.quick-panel span { color: #f1cdd8; margin-top: 7px; }
.device-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #120b17;
}
.device-strip a { min-height: 132px; padding: 24px; border-right: 1px solid var(--line); }
.device-strip b { display: block; color: #fff; font-size: 1.18rem; }
.device-strip span { display: block; margin-top: 8px; color: var(--muted); }
.dark-band,
.soft-band,
.article-band,
.faq-band,
.content-band,
.steps,
.text-grid { padding: 76px 5vw; }
.section-title { max-width: 850px; margin: 0 0 30px; }
.section-title h2,
.inner-hero h1 { margin: 0; font-size: 2.25rem; line-height: 1.2; }
.section-title span,
.inner-hero div { display: block; margin-top: 10px; max-width: 780px; color: var(--muted); }
.route-grid,
.plan-grid,
.platform-grid,
.help-grid,
.device-grid,
.text-grid { display: grid; gap: 14px; }
.route-grid { grid-template-columns: repeat(3, 1fr); }
.plan-grid,
.platform-grid,
.device-grid { grid-template-columns: repeat(4, 1fr); }
.help-grid,
.text-grid { grid-template-columns: repeat(3, 1fr); }
.route-grid article,
.plan-grid article,
.platform-grid article,
.help-grid article,
.device-grid article,
.text-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.035));
  padding: 24px;
  min-height: 168px;
}
.route-grid h2,
.route-grid h3,
.text-grid h2,
.help-grid h2,
.device-grid h2 { margin: 0 0 10px; font-size: 1.18rem; }
.route-grid p,
.plan-grid p,
.platform-grid p,
.help-grid p,
.text-grid p,
.device-grid p,
.device-grid li { margin: 0; color: var(--muted); }
.soft-band { background: #fff7f2; color: #23111a; }
.soft-band .section-title p { color: #a9173f; }
.soft-band .section-title span { color: #684d59; }
.plan-grid article { background: #fff; border-color: #ead5dd; color: #23111a; }
.plan-grid b { display: block; color: #a9173f; margin-bottom: 8px; }
.article-band { background: #0f0914; }
.article-list { display: grid; gap: 0; border-top: 2px solid rgba(255,255,255,.75); }
.article-row {
  display: grid;
  grid-template-columns: 120px 110px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.article-row time,
.article-row span,
.article-meta { color: #bdaabd; font-size: .92rem; }
.article-row h3 { margin: 0 0 8px; font-size: 1.18rem; }
.article-row p { margin: 0; color: var(--muted); }
.text-link { margin-top: 24px; }
.faq-band { background: #150d1b; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.faq-grid details { border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.06); padding: 17px; }
.faq-grid summary { cursor: pointer; font-weight: 800; }
.faq-grid p { color: var(--muted); margin: 10px 0 0; }
.inner-hero {
  padding: 82px 5vw 58px;
  background: radial-gradient(circle at 86% 20%, rgba(255,78,116,.24), transparent 30%), linear-gradient(135deg, #120914, #221022);
  border-bottom: 1px solid var(--line);
}
.inner-hero nav a,
.platform-grid a { background: rgba(255,255,255,.08); }
.platform-grid h3 { margin: 0 0 10px; }
.platform-grid a { margin-top: 18px; }
.steps { background: #fff7f2; color: #23111a; }
.steps ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 0; padding: 0; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; background: #fff; border: 1px solid #ead5dd; border-radius: 8px; padding: 24px; }
.steps li:before { content: counter(s); display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: #a9173f; color: #fff; font-weight: 900; margin-bottom: 12px; }
.steps p { color: #684d59; margin: 8px 0 0; }
.notice { margin: 0 5vw 76px; padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.06); }
.notice h2 { margin: 0 0 8px; }
.notice p { max-width: 860px; color: var(--muted); }
.long-read { max-width: 900px; margin: 0 auto; padding: 58px 5vw 84px; }
.long-read section { margin-top: 34px; }
.long-read h2 { font-size: 1.45rem; }
.long-read p { color: #eadce5; }
.article-meta { display: flex; gap: 14px; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.site-footer {
  display: grid;
  grid-template-columns: minmax(260px, 420px) 1fr;
  gap: 30px;
  padding: 46px 5vw;
  background: #07040a;
  border-top: 1px solid var(--line);
}
.site-footer p { color: var(--muted); }
.site-footer a { color: #ffd4de; }
.footer-links { display: flex; gap: 10px; flex-wrap: wrap; align-content: flex-start; justify-content: flex-end; }
.footer-links a { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; color: #fff; }
@media (max-width: 980px) {
  .site-top { align-items: flex-start; }
  .menu { display: inline-flex; }
  .nav { display: none; position: absolute; left: 5vw; right: 5vw; top: 66px; background: #120b17; border: 1px solid var(--line); border-radius: 8px; padding: 10px; box-shadow: var(--shadow); }
  .nav.open { display: grid; grid-template-columns: 1fr 1fr; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding: 70px 5vw 24px; }
  .hero h1 { font-size: 2.25rem; }
  .hero-visual { padding: 20px 5vw 120px; }
  .hero-visual img { width: 100%; }
  .quick-panel { left: 5vw; right: 5vw; width: auto; bottom: 34px; }
  .device-strip,
  .plan-grid,
  .platform-grid,
  .device-grid,
  .route-grid,
  .help-grid,
  .text-grid { grid-template-columns: 1fr 1fr; }
  .article-row { grid-template-columns: 100px 90px 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .steps ol { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}
@media (max-width: 560px) {
  .site-top { padding: 12px 18px; }
  .brand { min-width: 0; }
  .brand small { display: none; }
  .nav { left: 18px; right: 18px; top: 60px; }
  .nav.open { grid-template-columns: 1fr; }
  .hero-copy { padding: 52px 18px 18px; max-width: none; }
  .hero h1 { font-size: 1.52rem; line-height: 1.2; max-width: 100%; }
  .hero h1 span { word-break: break-all; }
  .lead { font-size: .96rem; word-break: break-all; max-width: 100%; }
  .hero-visual { padding: 10px 18px 150px; }
  .quick-panel { left: 18px; right: 18px; bottom: 24px; }
  .hero-actions a,
  .inner-hero a,
  .read-next a { width: 100%; }
  .device-strip,
  .route-grid,
  .plan-grid,
  .platform-grid,
  .device-grid,
  .help-grid,
  .text-grid { grid-template-columns: 1fr; }
  .dark-band,
  .soft-band,
  .article-band,
  .faq-band,
  .content-band,
  .steps,
  .text-grid { padding: 54px 18px; }
  .section-title h2,
  .inner-hero h1 { font-size: 1.62rem; }
  .article-row { grid-template-columns: 1fr; gap: 4px; }
  .notice { margin: 0 18px 54px; }
  .inner-hero { padding: 58px 18px 42px; }
  .site-footer { padding: 40px 18px; }
  .footer-links a { width: calc(50% - 5px); }
}