:root {
  color-scheme: dark;
  --bg: #070b13;
  --text: #f3f6ff;
  --muted: #a8b0c3;
  --accent: #ac99ff;
  --accent-rgb: 172, 153, 255;
  --secondary: #55e8f2;
  --line: rgba(255,255,255,.12);
  --progress: 0;
  --mx: 72vw;
  --my: 24vh;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background: radial-gradient(ellipse at 12% 4%, rgba(var(--accent-rgb),.14), transparent 32rem), radial-gradient(ellipse at 96% 46%, rgba(85,232,242,.07), transparent 35rem), var(--bg);
  font: 400 1rem/1.75 "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body[data-theme="domains"] { --accent: #59edf5; --accent-rgb: 89,237,245; --secondary: #b9afff; }
body[data-theme="email"] { --accent: #ff8bdc; --accent-rgb: 255,139,220; --secondary: #c5b7ff; }
body::before {
  content: "";
  position: fixed;
  z-index: -2;
  inset: -40px;
  pointer-events: none;
  opacity: .4;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px), linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(#000,transparent 90%);
  animation: grid-drift 24s linear infinite;
}
body::after { content: ""; position: fixed; z-index: -1; top: 0; left: 0; width: 680px; height: 680px; pointer-events: none; background: radial-gradient(circle,rgba(var(--accent-rgb),.055),transparent 75%); transform: translate3d(calc(var(--mx) - 340px),calc(var(--my) - 340px),0); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button { color: inherit; }
button:disabled { cursor: default; }
img { display: block; max-width: 100%; }
::selection { background: rgba(var(--accent-rgb),.3); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 14px; border: 1px solid var(--accent); border-radius: 8px; background: #050a12; color: var(--text); font: inherit; font-weight: 700; cursor: pointer; transform: translateY(-160%); transition: transform .18s; }
.skip-link:focus { transform: translateY(0); }
main:focus { outline: none; }
.page { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 120px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 13px; align-items: center; flex: 0 0 auto; }
.brand picture { display: block; width: 50px; height: 50px; border: 1px solid rgba(var(--accent-rgb),.5); overflow: hidden; border-radius: 14px; background: #030607; box-shadow: 0 0 22px rgba(var(--accent-rgb),.13); }
.brand img { width: 50px; height: 50px; object-fit: cover; }
.brand strong { display: block; font-size: 1.16rem; line-height: 1.5; }
.brand small { display: block; margin-top: 2px; color: var(--muted); font: 600 .75rem/1.45 ui-monospace, "Cascadia Code", monospace; letter-spacing: .1em; }
.business-nav { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; padding: 5px; border: 1px solid var(--line); border-radius: 12px; background: rgba(10,14,24,.75); }
.business-nav a, .business-nav span { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 7px 13px; border: 1px solid transparent; border-radius: 8px; font-size: .8rem; font-weight: 600; transition: color .2s, background .2s, border-color .2s; }
.business-nav a:hover { color: var(--accent); background: rgba(var(--accent-rgb),.07); }
.business-nav .nav-home { border-color: rgba(255,255,255,.14); }
.business-nav [aria-current="page"] { color: var(--accent); border-color: rgba(var(--accent-rgb),.3); background: rgba(var(--accent-rgb),.12); }
.hero { display: grid; grid-template-columns: 1.14fr .86fr; gap: clamp(36px,6vw,88px); align-items: center; padding: 86px 0 82px; }
.eyebrow { display: flex; gap: 12px; align-items: center; color: var(--accent); font: 700 .73rem/1.7 ui-monospace, "Cascadia Code", monospace; letter-spacing: .1em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 7px; height: 7px; flex: 0 0 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.hero h1 { margin: 22px 0 24px; font-size: clamp(2.15rem,4.35vw,3.9rem); font-weight: 800; line-height: 1.35; letter-spacing: -.045em; overflow-wrap: anywhere; }
.hero h1 span { display: block; color: var(--accent); background: linear-gradient(105deg,var(--accent),var(--secondary),#f3f6ff); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lead { max-width: 640px; margin: 0; color: var(--muted); font-size: 1rem; }
.lead strong { display: block; margin-bottom: 12px; color: var(--text); font-size: clamp(1.15rem,2vw,1.45rem); line-height: 1.6; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin: 26px 0; padding: 0; list-style: none; }
.hero-tags li, .hero-tags > span { padding: 5px 12px; border-radius: 6px; color: var(--accent); background: rgba(var(--accent-rgb),.07); border: 1px solid rgba(var(--accent-rgb),.2); font-size: .8rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { position: relative; isolation: isolate; display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 52px; padding: 13px 22px; border: 1px solid rgba(var(--accent-rgb),.35); border-radius: 11px; overflow: hidden; background: rgba(var(--accent-rgb),.065); color: var(--text); font-size: .9rem; font-weight: 700; line-height: 1.6; transition: transform .22s, box-shadow .22s, border-color .22s; }
.button:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 8px 26px rgba(var(--accent-rgb),.15); }
.button::after { content: ""; position: absolute; z-index: -1; inset: -50% -80%; pointer-events: none; background: linear-gradient(100deg,transparent 35%,rgba(255,255,255,.24) 50%,transparent 65%); transform: translateX(-70%); transition: transform .6s; }
.button:hover::after { transform: translateX(70%); }
.button-primary { color: #080b14; border-color: var(--accent); background: linear-gradient(110deg,var(--accent),var(--secondary)); box-shadow: 0 0 25px rgba(var(--accent-rgb),.1); }
.button-secondary { background: rgba(var(--accent-rgb),.065); }
.link-note { display: block; margin-top: 12px; color: var(--muted); font-size: .78rem; overflow-wrap: anywhere; }
.hero-panel { position: relative; padding: 25px; border: 1px solid rgba(var(--accent-rgb),.28); border-radius: 18px; background: linear-gradient(150deg,rgba(var(--accent-rgb),.06),rgba(8,12,22,.93)); box-shadow: 0 20px 70px rgba(0,0,0,.25); }
.panel-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.panel-top strong { font: 700 .75rem/1.5 ui-monospace, "Cascadia Code", monospace; letter-spacing: .08em; color: var(--accent); }
.panel-lights { display: flex; gap: 6px; }
.panel-lights i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: .4; animation: signal-pulse 2.7s ease-in-out infinite; }
.panel-lights i:nth-child(2) { animation-delay: .35s; }
.panel-lights i:nth-child(3) { animation-delay: .7s; }
.workflow { display: grid; gap: 0; margin: 14px 0; padding: 0; list-style: none; }
.workflow li { position: relative; display: flex; align-items: center; gap: 14px; min-height: 64px; padding: 12px 0; }
.workflow li + li { border-top: 1px solid rgba(255,255,255,.055); }
.workflow .step { display: grid; flex: 0 0 33px; width: 33px; height: 33px; place-items: center; border: 1px solid rgba(var(--accent-rgb),.32); border-radius: 9px; color: var(--accent); font: 700 .75rem/1 ui-monospace,monospace; }
.workflow strong { font-size: .87rem; font-weight: 600; }
.workflow small { margin-left: auto; color: var(--accent); font: 600 .75rem/1.5 ui-monospace,monospace; letter-spacing: .03em; white-space: nowrap; }
.panel-foot { display: flex; gap: 12px; justify-content: space-between; padding-top: 15px; color: var(--muted); border-top: 1px solid var(--line); font: 600 .75rem/1.55 ui-monospace,monospace; letter-spacing: .04em; }
.panel-foot span:last-child { color: var(--accent); }
.panel-bar { height: 3px; margin-top: 20px; background: rgba(var(--accent-rgb),.1); border-radius: 3px; overflow: hidden; }
.panel-bar::before { content: ""; display: block; width: 45%; height: 100%; background: linear-gradient(90deg,transparent,var(--accent),var(--secondary)); animation: pipeline-scan 3.5s ease-in-out infinite; }
.section { padding: 68px 0; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 26px; margin-bottom: 32px; }
.section-heading h2 { margin: 8px 0 0; font-size: clamp(1.55rem,2.5vw,2.2rem); line-height: 1.5; letter-spacing: -.025em; }
.section-heading p { max-width: 400px; margin: 0; color: var(--muted); font-size: .87rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.feature-card { position: relative; padding: 28px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(140deg,rgba(var(--accent-rgb),.035),rgba(11,15,25,.75)); transition: transform .22s,border-color .22s,box-shadow .22s; }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(var(--accent-rgb),.5); box-shadow: 0 12px 35px rgba(0,0,0,.15); }
.feature-card .feature-index { display: inline-block; margin-bottom: 16px; color: var(--accent); font: 700 .67rem/1.6 ui-monospace,monospace; letter-spacing: .09em; }
.feature-card h3 { margin: 0 0 12px; font-size: 1.12rem; line-height: 1.55; }
.feature-card p { margin: 0; color: var(--muted); font-size: .87rem; }
.feature-card ul { margin: 14px 0 0; padding-left: 18px; color: var(--muted); font-size: .84rem; }
.feature-card li + li { margin-top: 6px; }
.feature-card strong { color: var(--text); font-weight: 600; }
.stat-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin: 0 0 55px; }
.stat-grid div { padding: 22px 18px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.02); }
.stat-grid strong { display: block; color: var(--accent); font-size: 1.5rem; line-height: 1.5; }
.stat-grid span { display: block; margin-top: 7px; color: var(--muted); font-size: .76rem; }
.notice { margin: 24px 0 0; padding: 18px 22px; color: var(--muted); border-left: 2px solid var(--accent); background: rgba(var(--accent-rgb),.045); font-size: .82rem; line-height: 1.8; }
.notice strong { color: var(--text); }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--line); border-radius: 12px; background: rgba(11,15,25,.8); }
.faq-list summary { position: relative; padding: 20px 48px 20px 22px; list-style: none; font-weight: 600; font-size: .93rem; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 22px; top: 20px; color: var(--accent); font-size: 1.1rem; line-height: 1.5; }
.faq-list details[open] { border-color: rgba(var(--accent-rgb),.38); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { margin: 0; padding: 0 22px 22px; color: var(--muted); font-size: .87rem; }
.final-cta { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 32px; margin: 16px 0 72px; padding: 36px; border: 1px solid rgba(var(--accent-rgb),.4); border-radius: 18px; background: linear-gradient(125deg,rgba(var(--accent-rgb),.12),rgba(11,15,25,.8)); overflow: hidden; }
.consult-hint { display: block; margin-top: 8px; color: var(--muted); font-size: .78rem; line-height: 1.65; }
.final-cta h2 { margin: 0 0 10px; font-size: clamp(1.45rem,2.5vw,2rem); line-height: 1.5; }
.final-cta p { margin: 0; color: var(--muted); font-size: .87rem; }
.final-cta .button { flex: 0 0 auto; }
.final-cta .hero-actions { margin-top: 0; }
.footer { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 28px 0 38px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.footer p { margin: 0; }
.footer a { display: inline-flex; align-items: center; min-height: 44px; color: var(--accent); }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.scroll-progress { position: fixed; z-index: 40; inset: 0 0 auto; height: 2px; background: rgba(255,255,255,.035); pointer-events: none; }
.scroll-progress::after { content: ""; display: block; width: 100%; height: 100%; background: linear-gradient(90deg,var(--accent),var(--secondary)); transform: scaleX(var(--progress)); transform-origin: left; }
.back-top, .sound-toggle { position: fixed; z-index: 25; bottom: 22px; display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 44px; padding: 10px 15px; border: 1px solid rgba(var(--accent-rgb),.3); border-radius: 10px; background: rgba(7,11,19,.96); box-shadow: 0 8px 30px rgba(0,0,0,.25); color: var(--accent); font-size: .75rem; transition: opacity .2s,transform .2s; }
.back-top { right: 22px; opacity: 0; visibility: hidden; transform: translateY(12px); }
.back-top.is-visible { visibility: visible; opacity: 1; transform: none; }
.sound-toggle { left: 22px; }
.sound-toggle[data-enabled="true"]::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.toast { position: fixed; z-index: 50; left: 50%; bottom: 86px; max-width: min(520px,calc(100% - 32px)); padding: 12px 20px; border: 1px solid rgba(var(--accent-rgb),.5); border-radius: 12px; background: #101522; color: var(--text); box-shadow: 0 12px 40px rgba(0,0,0,.4); font-size: .86rem; text-align: center; opacity: 0; visibility: hidden; transform: translate(-50%,10px); transition: opacity .18s,transform .18s; pointer-events: none; }
.toast.is-visible { visibility: visible; opacity: 1; transform: translate(-50%,0); }
.click-ring { position: fixed; z-index: 100; width: 10px; height: 10px; margin: -5px; border: 1px solid var(--accent); border-radius: 50%; pointer-events: none; animation: click-bloom .55s ease-out forwards; }
.enter { animation: enter .65s both; }

html.is-scrolling *,
html.is-scrolling *::before,
html.is-scrolling *::after,
html.page-hidden *,
html.page-hidden *::before,
html.page-hidden *::after {
  animation-play-state: paused !important;
}
@keyframes grid-drift { to { transform: translate3d(0,56px,0); } }
@keyframes signal-pulse { 50% { opacity: 1; box-shadow: 0 0 8px var(--accent); } }
@keyframes pipeline-scan { from { transform: translateX(-100%); } to { transform: translateX(320%); } }
@keyframes click-bloom { to { transform: scale(6); opacity: 0; } }
@keyframes enter { from { opacity: .15; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@media (max-width: 1080px) {
  .header { gap: 20px; flex-wrap: wrap; }
  .business-nav { justify-content: space-between; width: 100%; }
  .business-nav a, .business-nav span { flex: 1; }
  .hero { gap: 36px; }
  .workflow small { display: none; }
}
@media (max-width: 760px) {
  .page { width: calc(100% - 36px); }
  .header { min-height: 96px; padding: 23px 0; }
  .hero { grid-template-columns: 1fr; padding: 52px 0; gap: 36px; }
  .hero h1 { font-size: clamp(2rem,7vw,3.3rem); }
  .hero-panel { padding: 22px; }
  .workflow small { display: block; }
  .section { padding: 46px 0; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 16px; }
  .section-heading p { max-width: none; }
  .feature-card { padding: 23px; }
  .stat-grid { grid-template-columns: repeat(2,minmax(0,1fr)); margin-bottom: 38px; }
  .final-cta { flex-direction: column; align-items: flex-start; padding: 28px; margin-bottom: 46px; gap: 24px; }
  .footer { align-items: flex-start; flex-direction: column; padding-bottom: 82px; gap: 12px; }
}
@media (max-width: 480px) {
  .business-nav { gap: 2px; padding: 3px; }
  .business-nav a, .business-nav span { min-height: 44px; padding: 7px 4px; font-size: .75rem; }
  .hero h1 { line-height: 1.42; letter-spacing: -.055em; }
  .lead { font-size: .91rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero-tags { gap: 7px; }
  .hero-tags li, .hero-tags > span { font-size: .73rem; padding: 5px 10px; }
  .back-top { right: 14px; bottom: 14px; }
  .sound-toggle { left: 14px; bottom: 14px; width: 44px; padding: 0; border-radius: 50%; font-size: 0; }
  .sound-toggle::after { content: "音"; font-size: .75rem; font-weight: 800; }
  .link-note a { display: inline-flex; align-items: center; min-height: 44px; }
  .final-cta .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  body::after { display: none; }
  .button:hover, .feature-card:hover { transform: none; }
  .click-ring { display: none; }
}