:root {
  font-family: Inter, "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  font-synthesis: none;
  color: #183c3b;
  background: #fafcfb;
  --ink: #183c3b;
  --muted: #586f65;
  --green: #087f6a;
  --line: #dfeae5;
  --ease: cubic-bezier(.22, 1, .36, 1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 112px; }
body { margin: 0; background: radial-gradient(ellipse at 0 37%, #e6f4ef55, transparent 30%), radial-gradient(ellipse at 100% 68%, #ece9fb55, transparent 24%); overflow-x: clip; }
::selection { background: #c8ece1; color: #154c42; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #459e8b; outline-offset: 5px; }
svg { width: 22px; height: 22px; flex-shrink: 0; }
img { object-fit: contain; max-width: 100%; }
.scroll-progress { position: fixed; inset: 0 0 auto; height: 2px; z-index: 20; transform: scaleX(var(--scroll, 0)); transform-origin: left; background: linear-gradient(90deg, #27a28a, #8b81d4); pointer-events: none; }
.site-header { width: calc(100% - 64px); max-width: 1200px; height: 76px; margin: 20px auto 0; padding: 0 24px; display: flex; align-items: center; gap: 32px; position: sticky; top: 16px; z-index: 10; border: 1px solid #ffffffe6; border-radius: 18px; background: #ffffffe8; backdrop-filter: blur(20px); box-shadow: 0 8px 32px #294c3910, 0 0 0 1px #dfe9e65e; }
.brand { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; font-size: 21px; letter-spacing: -.6px; font-weight: 650; line-height: 1.3; }
.brand img { width: 34px; height: 34px; }
.brand b { font-weight: 400; }
.site-header nav { display: flex; align-items: center; gap: 32px; margin-left: auto; color: var(--muted); font-size: 15px; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; transition: color .2s; }
.site-header nav a:hover { color: var(--green); }
.nav-download { display: flex; align-items: center; justify-content: center; gap: 16px; min-height: 44px; background: #edf5f0; border: 1px solid #deebe4; padding: 9px 18px; border-radius: 11px; font-size: 15px; font-weight: 550; transition: background .25s; }
.nav-download:hover { background: #e1f0e7; }
.hero { max-width: 1360px; padding: 80px 44px 80px; margin: auto; display: flex; flex-direction: column; gap: 48px; align-items: center; position: relative; isolation: isolate; }
.hero-ambient { position: absolute; inset: -80px calc((100% - 100vw)/2) 0; overflow: hidden; pointer-events: none; z-index: -1; mask-image: linear-gradient(#000 65%, transparent); }
.aura { position: absolute; display: block; border-radius: 50%; filter: blur(38px); opacity: .65; }
.aura-one { width: 760px; height: 620px; left: calc(50% - 780px); top: 140px; background: radial-gradient(ellipse, #b8ebd9 0, #d7f1e65c 48%, transparent 70%); animation: aurora-drift 24s ease-in-out infinite alternate; }
.aura-two { width: 730px; height: 690px; left: calc(50% + 60px); top: 140px; background: radial-gradient(ellipse, #d4cef48f 0, #e6defa50 50%, transparent 70%); animation: aurora-drift 28s -10s ease-in-out infinite alternate-reverse; }
.orbit { position: absolute; left: 50%; top: 100px; width: 1500px; height: 660px; margin-left: -750px; border: 1px solid #8fbbb41c; border-radius: 50%; transform: rotate(-19deg); }
.orbit::before { content: ""; position: absolute; width: 6px; height: 6px; border-radius: 50%; background: #7bc5b5; box-shadow: 0 0 0 6px #98cabb14; left: 20%; top: 10%; }
.orbit-two { width: 1720px; height: 730px; margin-left: -860px; top: 70px; transform: rotate(17deg); border-color: #a4a3cc19; }
.hero-copy { text-align: center; max-width: 900px; animation: rise-in .8s var(--ease) both; }
.release-pill { display: inline-flex; align-items: center; gap: 10px; min-height: 40px; padding: 5px 14px; background: #ffffffc9; border: 1px solid #d5e5dd; border-radius: 24px; color: #426d5c; font-size: 14px; transition: border-color .25s; }
.release-pill:hover { border-color: #99cbbb; }
.release-pill i { width: 6px; height: 6px; border-radius: 50%; background: #279775; box-shadow: 0 0 0 4px #48ac8910; }
h1 { font-size: clamp(48px, 5.6vw, 80px); font-weight: 600; line-height: 1.25; letter-spacing: -3px; margin: 26px 0 22px; }
.hero-accent { background: linear-gradient(110deg, #128570 8%, #228e89 48%, #8073bc 100%); background-clip: text; -webkit-background-clip: text; color: transparent; }
.hero-copy > p { font-size: 19px; line-height: 1.85; color: var(--muted); margin: 0 auto 28px; }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
.button { position: relative; overflow: hidden; isolation: isolate; border-radius: 12px; min-height: 54px; display: inline-flex; justify-content: center; align-items: center; gap: 12px; padding: 13px 23px; font-size: 16px; font-weight: 550; border: 1px solid transparent; transition: background .25s, box-shadow .3s, transform .35s var(--ease); white-space: nowrap; line-height: 1.5; }
.button > span { margin-left: 12px; font-size: 20px; transition: transform .35s var(--ease); }
.button:hover > span { transform: translateY(2px); }
.button.primary { background: linear-gradient(120deg, #087f6a, #106e5b); color: white; box-shadow: 0 6px 18px #18876b20, inset 0 1px #ffffff25; border-color: #0b7762; }
.button.primary::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(110deg, transparent 25%, #ffffff26 48%, transparent 72%); transform: translateX(-130%); transition: transform .7s var(--ease); }
.button.primary:hover::before { transform: translateX(130%); }
.button.primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px #18876b2b; }
.button.secondary { background: #ffffffd9; border-color: #ceded4; color: #315c4c; }
.button.secondary:hover { background: white; transform: translateY(-2px); box-shadow: 0 8px 24px #3a694410; }
.button svg { width: 21px; height: 21px; }
.agent-strip { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 25px; color: #526e60; }
.agent-strip > span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; }
.agent-strip img { width: 21px; height: 21px; }
.product-preview { width: 100%; max-width: 1156px; margin: 0; position: relative; perspective: 1800px; animation: rise-in 1s .12s var(--ease) both; }
.product-preview::before { content: ""; position: absolute; inset: -25px -28px 0; border-radius: 50px; background: linear-gradient(115deg, #90d9bc29, #b5dedc13 45%, #b4a2e330); filter: blur(30px); pointer-events: none; }
.product-preview > a { display: block; position: relative; border: 1px solid #ffffffdd; border-radius: 17px; padding: 5px; background: linear-gradient(130deg, #b4dbcabb, #f5f7ffb3 45%, #b7a8d75c); box-shadow: 0 38px 80px -35px #39634f40, 0 0 0 1px #c9dcd466; transform: rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)); transition: transform .7s var(--ease), box-shadow .6s; }
.product-preview > a:hover { box-shadow: 0 45px 90px -35px #39634f4a, 0 0 0 1px #afd0c8; }
.product-screenshot { display: block; width: 100%; height: auto; border-radius: 12px; background: #f5f8f6; }
.product-preview figcaption { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 16px; margin: 16px 4px 0; color: var(--muted); font-size: 14px; }
.product-preview figcaption a { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; }
.possibilities, .installation, .release-section, footer { width: calc(100% - 88px); max-width: 1156px; margin: auto; }
.possibilities, .installation, .release-section { padding: 72px 0; }
h2 { font-size: clamp(30px, 3vw, 42px); line-height: 1.4; letter-spacing: -1.6px; font-weight: 550; margin: 0; }
h2 span { color: #627c6d; }
.section-heading > p { font-size: 16px; color: var(--muted); margin: 14px 0 0; }
.possibilities { border-top: 1px solid #e4ece7; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 32px; }
.feature, .download-card { position: relative; min-width: 0; background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), #c7e8db20, transparent 65%), #ffffffb8; border: 1px solid #dfeae4; border-radius: 20px; padding: 30px; transition: border-color .3s, box-shadow .35s, transform .4s var(--ease); }
.feature:hover, .download-card:hover { border-color: #bad3c7; box-shadow: 0 16px 38px -25px #36604c30; transform: translateY(-2px); }
.feature-icon { width: 44px; height: 44px; display: grid; place-items: center; background: linear-gradient(145deg, #eef7f1, #e9f3ee); border: 1px solid #ddece3; color: #447b65; border-radius: 13px; font-size: 24px; line-height: 1; box-shadow: inset 0 1px white; }
.feature:nth-child(2) .feature-icon { background: #f2eff9; border-color: #e7e0f2; color: #8a73aa; }
.feature:nth-child(3) .feature-icon { background: #eaf3f5; border-color: #dcebef; color: #4d8085; }
.feature h3 { font-size: 21px; line-height: 1.5; letter-spacing: -.4px; font-weight: 550; margin: 22px 0 12px; }
.feature p { font-size: 16px; color: var(--muted); line-height: 1.85; margin: 0; }
.download-section { position: relative; isolation: isolate; width: calc(100% - 48px); max-width: 1264px; margin: 12px auto 0; padding: 50px 54px 30px; background: linear-gradient(125deg, #edf6f0, #f3f6f3 45%, #f1edf9); border-radius: 28px; border: 1px solid #e0e9e2; }
.download-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-top: 30px; }
.download-card { background-color: #fffffff0; }
.download-top { display: flex; align-items: center; justify-content: space-between; }
.download-top > svg { width: 32px; height: 32px; color: #37765e; }
.os-badge { border: 1px solid #d8e5dc; background: #f2f7f2; padding: 3px 10px; border-radius: 7px; font-size: 14px; color: #4c6e53; }
.download-card h3 { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; font-size: 30px; line-height: 1.4; margin: 24px 0; font-weight: 550; letter-spacing: -.8px; }
.os-description { color: var(--muted); font-size: 14px; font-weight: 400; letter-spacing: 0; }
.download-card .button { width: 100%; justify-content: space-between; }
.download-meta { display: flex; justify-content: space-between; gap: 16px; font-size: 14px; color: var(--muted); margin-top: 14px; }
.download-card details { margin-top: 18px; border-top: 1px solid #e6eee8; }
.download-card summary { font-size: 14px; color: #4a6c57; cursor: pointer; padding-top: 14px; min-height: 44px; }
.download-card code { display: block; margin-top: 12px; font: 14px/1.8 ui-monospace, monospace; overflow-wrap: anywhere; color: var(--muted); }
.download-foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 14px; color: #42674f; margin-top: 18px; }
.download-foot a { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; }
.installation { padding-top: 88px; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; margin-top: 34px; }
.steps article { min-width: 0; position: relative; border-top: 1px solid var(--line); padding-top: 22px; }
.step-index { color: #4f8064; font-size: 16px; font-variant-numeric: tabular-nums; display: block; margin-bottom: 18px; }
.steps h3 { font-size: 21px; font-weight: 550; margin: 0 0 12px; }
.steps p { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 0; }
.command { border: 1px solid #d9e7dc; background: #eef5ef; padding: 15px; border-radius: 12px; margin-top: 18px; }
.command code { font: 14px/1.8 ui-monospace, monospace; overflow-wrap: anywhere; color: #3f6550; display: block; }
.command button { display: block; min-height: 44px; padding: 10px 0 0; font-size: 14px; border: 0; background: transparent; color: #276d4b; }
.text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; margin-top: 14px; font-size: 15px; color: #276d4b; }
.release-section { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1.35fr; gap: 64px; }
.release-title { display: flex; align-items: center; gap: 20px; }
.release-title b { font-size: 20px; font-weight: 550; }
.release-title time { font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.release-notes ul { padding-left: 20px; font-size: 16px; line-height: 1.85; color: var(--muted); margin: 20px 0 0; }
.release-notes li + li { margin-top: 10px; }
.closing { position: relative; isolation: isolate; overflow: hidden; padding: 64px 24px 80px; text-align: center; background: radial-gradient(ellipse at 50% 100%, #e5f0e7, transparent 68%); }
.closing::before { content: ""; position: absolute; bottom: -330px; left: 50%; width: 900px; height: 500px; border: 1px solid #c6ddcd55; border-radius: 50%; transform: translateX(-50%); box-shadow: 0 0 0 60px #c9dece10, 0 0 0 120px #c9dece09; z-index: -1; }
.closing > img { width: 44px; height: 44px; filter: drop-shadow(0 5px 10px #24806f20); }
.closing h2 { font-size: 44px; line-height: 1.4; margin: 22px 0 28px; }
footer { border-top: 1px solid var(--line); padding: 28px 0 34px; display: flex; align-items: center; flex-wrap: wrap; gap: 24px; font-size: 14px; color: var(--muted); }
footer .brand { color: var(--ink); font-size: 18px; }
footer .brand img { width: 28px; height: 28px; }
footer > span { margin-left: auto; }
footer > a:last-child { display: inline-flex; align-items: center; min-height: 44px; gap: 8px; }
.reveal.in-view { animation: rise-in .8s var(--ease) both; }
.website-follow { margin-top: 18px; }
.website-follow-trigger { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; max-width: 100%; padding: 10px 12px; border: 1px solid #d5e7dc; border-radius: 11px; background: #f0f8f2; color: #2e6747; font-size: 14px; line-height: 1.7; text-align: left; }
.website-follow-trigger img { width: 18px; height: 18px; flex-shrink: 0; }
.website-follow-trigger > span:last-child { flex-shrink: 0; }
.website-follow-trigger:hover, .website-follow-trigger[aria-expanded=true] { background: #e8f3ec; border-color: #bdd8c7; }
.website-follow-popover { position: fixed; inset: auto; width: 320px; max-width: calc(100vw - 24px); max-height: calc(100dvh - 24px); margin: 0; padding: 28px 22px 22px; overflow-y: auto; border: 1px solid #dce8e1; border-radius: 22px; background: #fff; box-shadow: 0 18px 58px -14px #183e2f38, 0 3px 12px #183e2f0a; color: #264b3b; text-align: center; font-family: inherit; }
.website-follow-popover::backdrop { background: transparent; }
.website-follow-close { position: absolute; top: 6px; right: 6px; display: grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 0; border-radius: 10px; background: transparent; color: #587366; font: 26px/1 sans-serif; }
.website-follow-close:hover { background: #f0f5f2; }
.website-follow-popover h2 { margin: 8px 0; color: #254b39; font-size: 23px; font-weight: 600; line-height: 1.5; letter-spacing: -.4px; }
.website-follow-popover p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.website-follow-code { margin: 18px 0 14px; padding: 6px; border: 1px solid #e7eee9; border-radius: 13px; background: #fff; }
.website-follow-code img { display: block; width: 100%; height: auto; }
@keyframes rise-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes aurora-drift { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(45px, -20px, 0) scale(1.06); } }
@media (max-width: 1050px) {
  .hero { padding: 64px 32px; }
  .possibilities, .installation, .release-section, footer { width: calc(100% - 64px); }
  .feature-grid { gap: 16px; }
  .feature { padding: 24px; }
  .feature h3 { font-size: 20px; }
  .download-section { padding: 38px 32px 24px; }
  .steps { gap: 24px; }
  .release-section { gap: 36px; }
}
@media (max-width: 820px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature { display: grid; grid-template-columns: 44px minmax(0, 1fr); column-gap: 18px; }
  .feature-icon { grid-row: 1 / 3; }
  .feature h3 { margin: 0 0 8px; }
  .feature p { grid-column: 2; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .steps article { padding: 22px 0 0 48px; }
  .step-index { position: absolute; top: 24px; left: 0; margin: 0; }
  .command { max-width: 520px; }
  .release-section { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 640px) {
  html { scroll-padding-top: 96px; }
  .site-header { width: calc(100% - 28px); height: 66px; top: 10px; margin-top: 12px; padding: 0 14px; gap: 10px; border-radius: 15px; }
  .brand { font-size: 18px; gap: 9px; }
  .brand img { width: 29px; height: 29px; }
  .site-header nav, .desktop-label { display: none; }
  .nav-download { margin-left: auto; font-size: 14px; padding: 8px 13px; gap: 10px; }
  .hero { padding: 46px 24px 48px; gap: 34px; }
  h1 { font-size: clamp(38px, 9.5vw, 58px); letter-spacing: -1.7px; margin: 24px 0 20px; }
  .hero-copy > p { font-size: 17px; max-width: 360px; }
  .hero-actions { flex-direction: column; gap: 12px; max-width: 360px; margin: auto; }
  .hero-actions .button { min-height: 52px; }
  .agent-strip { gap: 20px; margin-top: 24px; }
  .product-preview::before { inset: -16px -12px 0; }
  .product-preview > a { padding: 3px; border-radius: 12px; }
  .product-screenshot { border-radius: 8px; }
  .product-preview figcaption { margin: 12px 0 0; gap: 10px; }
  .aura-one { width: 600px; height: 500px; left: -320px; top: 120px; }
  .aura-two { width: 500px; height: 500px; left: 80px; top: 200px; }
  .orbit { top: 150px; width: 900px; height: 400px; margin-left: -450px; }
  .orbit-two { top: 100px; width: 1000px; height: 500px; margin-left: -500px; }
  .possibilities, .installation, .release-section, footer { width: calc(100% - 48px); }
  .possibilities, .installation, .release-section { padding: 46px 0; }
  h2 { font-size: 29px; letter-spacing: -1px; }
  .feature-grid { margin-top: 26px; gap: 14px; }
  .feature { padding: 24px; grid-template-columns: 1fr; }
  .feature-icon { grid-row: auto; width: 42px; height: 42px; }
  .feature h3 { margin: 18px 0 10px; }
  .feature p { grid-column: auto; }
  .download-section { width: calc(100% - 24px); margin-top: 12px; padding: 30px 18px 18px; border-radius: 22px; }
  .download-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 26px; }
  .download-card { padding: 24px; border-radius: 17px; }
  .download-card h3 { font-size: 28px; margin: 20px 0; }
  .download-card .button { padding: 13px 16px; }
  .download-card .button > span { margin-left: 0; }
  .download-foot { gap: 8px; }
  .steps { margin-top: 28px; }
  .steps h3 { font-size: 20px; }
  .release-notes ul { margin-top: 16px; }
  .closing { padding: 46px 24px 58px; }
  .closing h2 { font-size: 32px; }
  footer { gap: 16px; padding: 24px 0; }
  footer > a:last-child { width: 100%; }
  .wide-only { display: none; }
}
@media (max-width: 370px) {
  .brand { font-size: 17px; gap: 8px; }
  .brand img { width: 27px; height: 27px; }
  .nav-download { padding: 8px 11px; gap: 8px; }
  .hero { padding-left: 20px; padding-right: 20px; }
  .hero-copy > p { font-size: 16px; }
  .agent-strip { gap: 14px; }
  .product-preview figcaption { flex-wrap: wrap; }
  .download-card { padding: 20px; }
  .download-card .button { font-size: 15px; padding: 13px 11px; }
  .download-card h3 { align-items: flex-start; }
  .os-description { width: 100%; }
  footer > span { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .product-preview > a { transform: none; }
}

.mac-intel-link { display: inline-flex; align-items: center; gap: 8px; padding: 10px 0; color: var(--muted); font-size: 13px; }
.mac-download details p { font-size: 13px; line-height: 1.7; color: var(--muted); margin: 10px 0; }
.mac-download details > span { display: block; color: var(--muted); font-size: 12px; margin-top: 12px; }
@media (min-width: 641px) and (max-width: 1050px) { .download-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .mac-download { grid-column: 1 / -1; } }

.download-source-status { margin: 18px 0 0; color: var(--muted); font-size: 13px; min-height: 20px; }