:root {
  --ink: #f4f7f4;
  --muted: #98a19c;
  --surface: #080b0d;
  --surface-2: #0e1315;
  --line: rgba(255,255,255,.13);
  --green: #20c451;
  --orange: #ff9818;
  --red: #ef1740;
  --mint: #70f7c7;
  --pad: clamp(22px, 5vw, 78px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--surface); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 82px;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, height .3s ease;
}
.site-header.scrolled { height: 68px; background: rgba(8,11,13,.88); border-color: var(--line); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 12px; letter-spacing: .03em; }
.brand-mark { width: 38px; height: 38px; fill: none; stroke: rgba(255,255,255,.42); stroke-width: 1; }
.brand-mark-accent { fill: var(--mint); stroke: none; }
.brand span { display: flex; flex-direction: column; line-height: 1.15; }
.brand strong { font-size: 17px; letter-spacing: .08em; }
.brand small { margin-top: 5px; color: var(--muted); font: 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .14em; }
.main-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 46px); font-size: 13px; }
.main-nav a { color: #cdd3cf; transition: color .2s ease; }
.main-nav a:hover { color: #fff; }
.main-nav .nav-cta { padding: 10px 18px; border: 1px solid rgba(112,247,199,.52); color: var(--mint); }
.menu-toggle { display: none; background: none; border: 0; color: #fff; }

.hero { position: relative; min-height: 100svh; overflow: hidden; display: flex; align-items: center; }
.hero-image {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(4,7,8,.98) 0%, rgba(4,7,8,.86) 34%, rgba(4,7,8,.22) 70%, rgba(4,7,8,.38) 100%), url("assets/timezone-chart.png");
  background-size: cover;
  background-position: 50% center;
  transform: scale(1.035);
  animation: hero-drift 18s ease-in-out infinite alternate;
}
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(90deg, #000 0%, transparent 72%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 22%; background: linear-gradient(transparent, var(--surface)); }
.hero-content { position: relative; z-index: 2; width: min(680px, 78vw); margin-left: var(--pad); padding-top: 55px; }
.eyebrow, .section-index { margin: 0 0 22px; color: var(--mint); font: 11px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(58px, 7.8vw, 122px); line-height: .93; letter-spacing: -.065em; font-weight: 650; }
.hero h1 span { color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.62); }
.hero-copy { width: min(510px, 100%); margin: 32px 0 0; color: #bbc3be; font-size: clamp(16px, 1.25vw, 19px); }
.hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; font-size: 14px; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--mint); color: #07110e; font-weight: 700; }
.button-primary:hover { background: #9dffdc; }
.button-quiet { padding-inline: 0; color: #d8dedb; }
.button-quiet span { margin-left: 10px; color: var(--mint); }
.market-tape { position: absolute; z-index: 3; left: 0; right: 0; bottom: 0; height: 54px; padding: 0 var(--pad); display: flex; align-items: center; gap: clamp(20px, 4vw, 64px); border-top: 1px solid var(--line); color: #8e9993; font: 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.market-tape i { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 14px var(--mint); }
.tape-version { margin-left: auto; color: #dce2de; }
.hero-rise { opacity: 0; transform: translateY(22px); animation: hero-rise .8s cubic-bezier(.2,.8,.2,1) forwards; }
.hero h1 { animation-delay: .12s; }
.hero-copy { animation-delay: .23s; }
.hero-actions { animation-delay: .34s; }

main > section:not(.hero) { padding-inline: var(--pad); }
.manifesto { min-height: 70vh; padding-top: 13vh; padding-bottom: 13vh; display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 3fr); align-items: start; border-bottom: 1px solid var(--line); }
.manifesto h2, .section-heading h2, .risk h2, .interface h2, .autotrend h2, .fit h2, .price h2, .contact h2 { margin: 0; font-size: clamp(40px, 5.4vw, 82px); line-height: 1.12; letter-spacing: -.055em; font-weight: 560; }
.manifesto > div > p { max-width: 720px; margin: 38px 0 0 auto; color: var(--muted); font-size: clamp(17px, 1.5vw, 21px); }

.method { padding-top: 130px; padding-bottom: 130px; }
.section-heading { display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 3fr); margin-bottom: 78px; }
.method-track { border-top: 1px solid var(--line); }
.method-item { min-height: 180px; display: grid; grid-template-columns: 90px 12px minmax(280px, 1fr) auto; gap: clamp(22px, 4vw, 64px); align-items: center; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.method-item::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,.035)); transform: translateX(-100%); transition: transform .65s ease; }
.method-item:hover::before { transform: translateX(0); }
.method-number, .method-tag { color: #6f7873; font: 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .16em; }
.method-color { width: 8px; height: 72px; }
.method-color.green { background: var(--green); }
.method-color.orange { background: var(--orange); }
.method-color.red { background: var(--red); }
.method-copy { display: grid; grid-template-columns: minmax(170px, .7fr) minmax(280px, 1.4fr); gap: 30px; align-items: center; }
.method-copy h3 { margin: 0; font-size: clamp(28px, 3vw, 44px); font-weight: 520; letter-spacing: -.03em; }
.method-copy p { margin: 0; color: var(--muted); }

.risk { min-height: 92vh; position: relative; padding-top: 150px; padding-bottom: 150px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 9vw; overflow: hidden; background: var(--surface-2); }
.risk-backdrop { position: absolute; inset: 0; opacity: .55; pointer-events: none; }
.risk-line { position: absolute; left: -10%; right: -10%; height: 34%; border-top: 1px solid; transform: skewY(-7deg); }
.risk-line-a { top: 31%; color: rgba(32,196,81,.38); background: linear-gradient(rgba(32,196,81,.09), transparent); }
.risk-line-b { top: 45%; color: rgba(255,152,24,.34); background: linear-gradient(rgba(255,152,24,.07), transparent); }
.risk-line-c { top: 59%; color: rgba(239,23,64,.34); background: linear-gradient(rgba(239,23,64,.06), transparent); }
.risk-intro, .risk-list { position: relative; z-index: 2; }
.risk-intro > p:last-child { max-width: 480px; margin-top: 32px; color: var(--muted); font-size: 18px; }
.risk-list { margin: 12px 0 0; }
.risk-list div { padding: 26px 0; border-top: 1px solid var(--line); }
.risk-list div:last-child { border-bottom: 1px solid var(--line); }
.risk-list dt { font-size: 21px; font-weight: 650; }
.risk-list dd { margin: 7px 0 0; color: var(--muted); font-size: 14px; }

.interface { padding-top: 140px; padding-bottom: 140px; }
.interface-copy { display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 2.1fr) minmax(260px, 1fr); gap: 4vw; align-items: start; margin-bottom: 70px; }
.interface-copy .section-index { grid-column: 1; }
.interface-copy h2 { grid-column: 2; }
.interface-copy > p:not(.section-index), .interface-copy ul { grid-column: 3; }
.interface-copy > p:not(.section-index) { margin: 4px 0 28px; color: var(--muted); }
.interface-copy ul { list-style: none; padding: 0; margin: 0; }
.interface-copy li { padding: 10px 0; border-top: 1px solid var(--line); color: #c6ceca; font-size: 13px; }
.interface-copy li span { color: var(--mint); margin-right: 18px; font-family: ui-monospace, monospace; }
.terminal-shot { margin: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.16); background: #030506; }
.terminal-shot img { width: 100%; min-height: 320px; object-fit: cover; object-position: center; transition: transform 1s cubic-bezier(.2,.7,.2,1); }
.terminal-shot:hover img { transform: scale(1.018); }
.terminal-shot figcaption { height: 48px; padding: 0 18px; display: flex; justify-content: space-between; align-items: center; color: #7c8781; font: 10px/1 ui-monospace, monospace; letter-spacing: .12em; }
.terminal-shot figcaption span { color: var(--mint); }

.autotrend { min-height: 78vh; padding-top: 120px; padding-bottom: 120px; position: relative; display: flex; align-items: center; overflow: hidden; background: #e9eee9; color: #0b100d; }
.autotrend-content { position: relative; z-index: 2; width: min(760px, 65vw); margin-left: 37%; }
.autotrend .section-index { color: #087a50; }
.autotrend-content > p:not(.section-index) { max-width: 620px; margin-top: 30px; color: #4d5751; font-size: 18px; }
.autotrend-content small { display: block; max-width: 610px; margin-top: 28px; padding-top: 20px; border-top: 1px solid rgba(0,0,0,.18); color: #6b746e; }
.autotrend-orbit { position: absolute; left: -12vw; width: 54vw; aspect-ratio: 1; border: 1px solid rgba(0,0,0,.17); border-radius: 50%; }
.autotrend-orbit::before, .autotrend-orbit::after { content: ""; position: absolute; border: 1px solid rgba(0,0,0,.13); border-radius: inherit; }
.autotrend-orbit::before { inset: 14%; }
.autotrend-orbit::after { inset: 31%; background: #101614; }
.autotrend-orbit i { position: absolute; z-index: 2; width: 15px; height: 15px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 8px rgba(32,196,81,.12); animation: orbit 10s linear infinite; transform-origin: 27vw 27vw; }
.autotrend-orbit i:nth-child(2) { background: var(--orange); animation-duration: 15s; animation-delay: -4s; }
.autotrend-orbit i:nth-child(3) { background: var(--red); animation-duration: 21s; animation-delay: -9s; }

.fit { padding-top: 140px; padding-bottom: 140px; border-bottom: 1px solid var(--line); }
.fit-heading { display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 3fr); margin-bottom: 74px; }
.fit-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.fit-list article { min-height: 260px; padding: clamp(28px, 4vw, 58px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.fit-list span { color: var(--mint); font: 11px/1 ui-monospace, monospace; letter-spacing: .15em; }
.fit-list h3 { margin: 38px 0 12px; font-size: clamp(24px, 2.3vw, 34px); font-weight: 560; letter-spacing: -.035em; }
.fit-list p { max-width: 500px; margin: 0; color: var(--muted); }

.price { padding-top: 150px; padding-bottom: 150px; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(420px, .75fr); gap: 9vw; background: #e9eee9; color: #0b100d; }
.price .section-index { color: #087a50; }
.price-copy > p:last-child { max-width: 650px; margin: 34px 0 0; color: #515d56; font-size: 18px; }
.price-panel { padding: clamp(34px, 4vw, 56px); background: #101614; color: var(--ink); box-shadow: 0 28px 80px rgba(0,0,0,.2); }
.price-label { margin: 0 0 26px; color: #aab4ae; font-size: 13px; }
.price-value { display: flex; align-items: baseline; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.price-value small { margin-right: 8px; color: var(--mint); font-size: 24px; }
.price-value strong { font: 650 clamp(58px, 6vw, 92px)/1 ui-monospace, monospace; letter-spacing: -.08em; }
.price-value span { margin-left: 12px; color: var(--muted); }
.price-panel ul { list-style: none; padding: 10px 0 20px; margin: 0; }
.price-panel li { padding: 14px 0; border-bottom: 1px solid var(--line); color: #d3dad6; font-size: 14px; }
.price-panel li::before { content: "✓"; margin-right: 12px; color: var(--mint); }
.price-panel .button { width: 100%; margin-top: 18px; }
.price-panel > small { display: block; margin-top: 18px; color: #78827c; font-size: 11px; }

.contact { padding-top: 150px; padding-bottom: 150px; }
.contact-heading { display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 2fr) minmax(260px, .9fr); gap: 4vw; margin-bottom: 76px; }
.contact-heading .section-index { grid-column: 1; }
.contact-heading h2 { grid-column: 2; }
.contact-heading > p:not(.section-index) { grid-column: 3; margin: 8px 0 0; color: var(--muted); }
.contact-body { display: grid; grid-template-columns: minmax(380px, .9fr) minmax(0, 1.4fr); gap: 8vw; align-items: center; padding-top: 55px; border-top: 1px solid var(--line); }
.qr-card { display: flex; align-items: center; gap: 30px; }
.qr-card img { width: 200px; height: 200px; object-fit: cover; background: #fff; border: 8px solid #fff; }
.qr-card div { display: flex; flex-direction: column; }
.qr-card strong { font-size: 22px; }
.qr-card span { margin-top: 8px; color: var(--muted); font-size: 13px; }
.contact-list { font-style: normal; border-top: 1px solid var(--line); }
.contact-list a { min-height: 74px; display: flex; justify-content: space-between; align-items: center; gap: 22px; border-bottom: 1px solid var(--line); transition: color .2s ease, padding .2s ease; }
.contact-list a:hover { padding-inline: 14px; color: var(--mint); }
.contact-list span { color: var(--muted); font-size: 12px; }
.contact-list strong { font: 500 clamp(14px, 1.5vw, 19px)/1.2 ui-monospace, monospace; }

footer { min-height: 220px; padding: 58px var(--pad); display: grid; grid-template-columns: 1fr 1.4fr auto; gap: 40px; align-items: end; border-top: 1px solid var(--line); color: #717b75; font-size: 11px; }
.footer-brand { align-self: start; color: var(--ink); }
footer p { margin: 0; max-width: 480px; }

.reveal { opacity: 0; transform: translateY(36px); transition: opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: none; }

@keyframes hero-rise { to { opacity: 1; transform: none; } }
@keyframes hero-drift { from { transform: scale(1.035) translateX(0); } to { transform: scale(1.075) translateX(-1.2%); } }
@keyframes orbit { from { transform: rotate(0deg) translateX(27vw) rotate(0deg); } to { transform: rotate(360deg) translateX(27vw) rotate(-360deg); } }

@media (max-width: 900px) {
  .site-header { height: 68px; }
  .menu-toggle { display: grid; gap: 6px; padding: 10px; }
  .menu-toggle > span:not(.sr-only) { display: block; width: 23px; height: 1px; background: currentColor; transition: transform .2s ease; }
  .menu-toggle[aria-expanded="true"] > span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 68px 0 auto; padding: 26px var(--pad) 32px; display: none; flex-direction: column; align-items: flex-start; background: rgba(8,11,13,.98); border-bottom: 1px solid var(--line); }
  .main-nav.open { display: flex; }
  .hero-content { width: calc(100% - var(--pad) * 2); }
  .hero-image { background-position: 64% center; }
  .manifesto, .section-heading { grid-template-columns: 1fr; gap: 28px; }
  .manifesto > div > p { margin-left: 0; }
  .method-item { grid-template-columns: 48px 8px 1fr; gap: 20px; padding: 28px 0; }
  .method-copy { grid-template-columns: 1fr; gap: 10px; }
  .method-tag { display: none; }
  .risk { grid-template-columns: 1fr; gap: 60px; }
  .interface-copy, .contact-heading { grid-template-columns: 1fr; gap: 24px; }
  .interface-copy .section-index, .interface-copy h2, .interface-copy > p:not(.section-index), .interface-copy ul,
  .contact-heading .section-index, .contact-heading h2, .contact-heading > p:not(.section-index) { grid-column: 1; }
  .fit-heading, .price { grid-template-columns: 1fr; gap: 55px; }
  .contact-body { grid-template-columns: 1fr; gap: 55px; }
  .autotrend-content { width: 72vw; margin-left: 21%; }
  .autotrend-orbit { left: -32vw; width: 72vw; }
  footer { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 560px) {
  .brand strong { font-size: 15px; }
  .hero { min-height: 780px; }
  .hero-content { padding-top: 15px; }
  .hero h1 { font-size: clamp(52px, 14.2vw, 58px); }
  .hero h1 span { white-space: nowrap; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 10px; }
  .market-tape span:nth-child(2), .market-tape span:nth-child(3) { display: none; }
  .manifesto { min-height: auto; }
  .manifesto h2, .section-heading h2, .risk h2, .interface h2, .autotrend h2, .fit h2, .price h2, .contact h2 { font-size: 39px; }
  .method, .interface, .fit, .price, .contact { padding-top: 90px; padding-bottom: 90px; }
  .method-item { grid-template-columns: 34px 6px 1fr; }
  .method-color { height: 58px; }
  .method-copy p { font-size: 14px; }
  .risk { padding-top: 90px; padding-bottom: 90px; }
  .terminal-shot img { min-height: 410px; object-position: 67% center; }
  .terminal-shot figcaption { font-size: 8px; }
  .autotrend { min-height: 700px; }
  .autotrend-content { width: 100%; margin-left: 0; }
  .autotrend-orbit { top: -19vw; left: 42vw; width: 82vw; opacity: .35; }
  .fit-list { grid-template-columns: 1fr; }
  .fit-list article { min-height: 220px; }
  .price { grid-template-columns: 1fr; }
  .price-panel { padding: 30px 22px; }
  .price-value strong { font-size: 58px; }
  .qr-card { align-items: flex-start; flex-direction: column; }
  .contact-list a { align-items: flex-start; flex-direction: column; justify-content: center; gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .hero-rise, .reveal { opacity: 1; transform: none; }
}