:root {
  color-scheme: light;
  --discovery-bg: #f7f5f1;
  --discovery-surface: #fbfaf7;
  --discovery-surface-muted: #eeece6;
  --discovery-ink: #101110;
  --discovery-muted: #6f6e68;
  --discovery-line: #dedbd4;
  --discovery-accent: #315f43;
  --discovery-accent-soft: #d9e6d7;
  --discovery-coral: #d97958;
  --discovery-shadow: 0 18px 48px -28px rgba(38, 49, 37, .5);
  --ap-target-min: 44px;
  --ap-primary-height: 52px;
  color: var(--discovery-ink);
  background: var(--discovery-bg);
  font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--discovery-bg); color: var(--discovery-ink); font: 16px/1.65 Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; }
.discovery-shell { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.discovery-skip-link { position: absolute; left: 12px; top: 8px; z-index: 10; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); border-radius: 4px; background: var(--discovery-ink); color: #fff; text-decoration: none; }
.discovery-skip-link:focus-visible { width: auto; height: auto; padding: 8px 12px; overflow: visible; clip-path: none; }
.discovery-nav { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 108px; padding: 0; border-bottom: 1px solid var(--discovery-line); }
.discovery-nav a { text-decoration: none; }
.discovery-brand { display: inline-flex; align-items: center; min-height: 44px; color: var(--discovery-ink); font-weight: 800; letter-spacing: -.05em; font-size: 1.15rem; }
.discovery-brand .brand-wordmark { display: block; width: 180px; max-width: 100%; height: auto; }
.discovery-links { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; min-width: 0; font-size: .9rem; color: var(--discovery-muted); }
.discovery-links a:hover { color: var(--discovery-ink); }
.discovery-links a[aria-current="page"] { color: var(--discovery-ink); font-weight: 700; }
.discovery-nav-publish { display: inline-flex; align-items: center; flex: 0 0 auto; min-height: 44px; padding: 0 16px; border-radius: 5px; background: var(--discovery-ink); color: #fff !important; }
.discovery-nav-publish:hover { background: #363731; }
.discovery-hero { position: relative; padding: 82px 0 62px; }
.discovery-hero--split { display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(360px, .97fr); gap: 64px; align-items: center; }
.discovery-hero-copy { max-width: 660px; }
.discovery-kicker { display: inline-block; color: var(--discovery-accent); font-size: .76rem; font-weight: 600; letter-spacing: .06em; }
h1 { margin: 13px 0 20px; max-width: 720px; font-size: clamp(2.65rem, 6vw, 5.5rem); line-height: .99; letter-spacing: -.075em; font-weight: 750; }
h2 { margin: 48px 0 12px; font-size: clamp(1.55rem, 3vw, 2.35rem); line-height: 1.1; letter-spacing: -.055em; }
h3 { margin: 24px 0 8px; font-size: 1.08rem; line-height: 1.3; }
p { max-width: 720px; }
.discovery-lead { color: #4e514b; font-size: clamp(1.08rem, 2vw, 1.3rem); line-height: 1.62; max-width: 650px; }
.discovery-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.discovery-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border-radius: 5px; background: var(--discovery-ink); color: #fff; font-weight: 500; text-decoration: none; transition: background 220ms ease, color 220ms ease; }
.discovery-cta:hover { background: #363731; }
.discovery-cta.secondary { background: transparent; color: var(--discovery-ink); border: 0; box-shadow: none; }
.discovery-cta.secondary:hover { background: var(--discovery-surface-muted); }
.discovery-audience { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 26px; color: var(--discovery-muted); font-size: .82rem; }
.discovery-audience span::before { content: "↗"; color: var(--discovery-accent); margin-right: 6px; }
.discovery-hero-caption { margin: 24px 0 0; color: var(--discovery-muted); font: .78rem/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .08em; }
.discovery-art { margin: 0; }
.discovery-art img { display: block; width: 100%; aspect-ratio: 1.16 / 1; object-fit: cover; border: 1px solid var(--discovery-line); box-shadow: 0 20px 42px -30px rgba(38, 49, 37, .48); }
.discovery-art figcaption { padding: 12px 0 0; color: var(--discovery-muted); font-size: .8rem; }

.discovery-visual { position: relative; min-height: 370px; display: grid; place-items: center; isolation: isolate; }
.discovery-visual::before { content: ""; position: absolute; inset: 10% 0 4%; z-index: -2; border-radius: 42% 58% 52% 48% / 48% 42% 58% 52%; background: var(--discovery-accent-soft); transform: rotate(-7deg); }
.discovery-visual-orbit { position: absolute; border: 1px solid rgba(49, 95, 67, .22); border-radius: 50%; pointer-events: none; }
.discovery-visual-orbit--one { width: 88%; height: 72%; transform: rotate(18deg); }
.discovery-visual-orbit--two { width: 64%; height: 92%; transform: rotate(-29deg); }
.discovery-window { width: min(100%, 390px); overflow: hidden; border: 1px solid rgba(16, 17, 16, .15); border-radius: 16px; background: var(--discovery-surface); box-shadow: var(--discovery-shadow); transform: rotate(2.5deg); animation: discovery-float 6s ease-in-out 2 alternate; }
.discovery-window-bar { display: flex; align-items: center; gap: 6px; padding: 13px 15px; border-bottom: 1px solid var(--discovery-line); color: var(--discovery-muted); font-size: .7rem; }
.discovery-window-bar span { width: 7px; height: 7px; border-radius: 50%; background: #d3d1c8; }
.discovery-window-bar span:first-child { background: var(--discovery-coral); }
.discovery-window-bar small { margin-left: auto; font: .7rem ui-monospace, SFMono-Regular, Consolas, monospace; }
.discovery-window-body { position: relative; display: grid; min-height: 208px; place-items: center; align-content: center; gap: 16px; overflow: hidden; background: radial-gradient(circle at 30% 22%, #e7efe1, transparent 30%), linear-gradient(145deg, #f8f7f1, #e6eee3); }
.discovery-window-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .28; filter: saturate(.75); }
.discovery-window-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(248,247,241,.14), rgba(230,238,227,.75)); }
.discovery-window-label { color: var(--discovery-accent); font: 800 .66rem ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .16em; }
.discovery-window-label, .discovery-window-play, .discovery-window-url { position: relative; z-index: 1; }
.discovery-window-play { display: grid; place-items: center; width: 68px; height: 68px; padding-left: 4px; border-radius: 22px; background: var(--discovery-ink); color: #fff; font-size: 1.25rem; box-shadow: 0 10px 24px -14px rgba(16, 17, 16, .8); }
.discovery-window-url { color: var(--discovery-muted); font: .72rem ui-monospace, SFMono-Regular, Consolas, monospace; }
.discovery-window-footer { display: flex; align-items: center; gap: 7px; padding: 13px 15px; color: var(--discovery-muted); font-size: .76rem; }
.discovery-window-footer b { margin-left: auto; color: var(--discovery-accent); font-weight: 700; }
.discovery-status-dot { width: 7px; height: 7px; border-radius: 50%; background: #66a870; box-shadow: 0 0 0 4px #66a87025; }
.discovery-float { position: absolute; z-index: 2; padding: 8px 12px; border: 1px solid rgba(16, 17, 16, .12); border-radius: 999px; background: rgba(251, 250, 247, .88); box-shadow: 0 8px 22px -16px rgba(16, 17, 16, .7); color: var(--discovery-ink); font-size: .75rem; font-weight: 700; backdrop-filter: blur(5px); }
.discovery-float--top { top: 13%; right: 1%; animation: discovery-float-small 5s ease-in-out .3s 2 alternate; }
.discovery-float--bottom { bottom: 10%; left: 1%; animation: discovery-float-small 5.8s ease-in-out .8s 2 alternate-reverse; }

.discovery-loop { display: grid; grid-template-columns: minmax(220px, .72fr) minmax(0, 1.28fr); gap: 44px; align-items: start; margin: 14px 0 0; padding: 28px 0 34px; border-top: 1px solid var(--discovery-line); border-bottom: 1px solid var(--discovery-line); }
.discovery-loop h2 { margin: 10px 0 12px; font-size: clamp(1.7rem, 3vw, 2.6rem); }
.discovery-loop p { color: var(--discovery-muted); font-size: .95rem; }
.discovery-loop-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.discovery-loop-steps li { min-height: 122px; padding: 0 15px; border-left: 1px solid var(--discovery-line); border-radius: 0; background: transparent; }
.discovery-loop-steps span { display: block; margin-bottom: 20px; color: var(--discovery-accent); font: .72rem ui-monospace, SFMono-Regular, Consolas, monospace; }
.discovery-loop-steps strong { display: block; font-size: 1.02rem; }
.discovery-loop-steps small { display: block; margin-top: 3px; color: var(--discovery-muted); line-height: 1.4; }

.discovery-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 28px 0; }
.discovery-card { padding: 22px 0 10px; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
.discovery-card:hover { box-shadow: none; }
.discovery-card h2, .discovery-card h3 { margin-top: 0; }
.discovery-card h3 { font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif; font-size: 1.15rem; line-height: 1.35; letter-spacing: -.025em; font-weight: 700; }
.discovery-card p, section > p, section > ul { color: #555850; }
.discovery-steps { counter-reset: step; padding: 0; list-style: none; }
.discovery-steps li { counter-increment: step; display: grid; grid-template-columns: 36px 1fr; gap: 14px; margin: 17px 0; }
.discovery-steps li::before { content: counter(step); display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--discovery-accent); border-radius: 50%; color: var(--discovery-accent); }
.discovery-code { display: block; overflow-x: auto; padding: 17px 18px; background: #e9eee7; border: 1px solid #cbd8c8; border-radius: 9px; color: #263128; font: .88rem/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; }
.discovery-note { color: var(--discovery-muted); }
.discovery-capabilities { margin: 0 0 48px; padding-top: 38px; }
.discovery-capabilities .discovery-card { padding-top: 0; border-top: 0; }
.discovery-fit { display: grid; grid-template-columns: minmax(240px, .72fr) minmax(0, 1.28fr); gap: 48px; align-items: start; margin: 0; padding: 44px 0 48px; border-top: 1px solid var(--discovery-line); border-bottom: 1px solid var(--discovery-line); }
.discovery-fit-heading h2 { margin: 10px 0 14px; }
.discovery-fit-heading h2, .discovery-tasks h2 { font-size: clamp(1.65rem, 2.5vw, 2.15rem); }
.discovery-fit-heading p { margin: 0; color: var(--discovery-muted); }
.discovery-fit-list { margin: 4px 0 0; padding-left: 22px; }
.discovery-fit-list li { margin: 0 0 12px; padding-left: 4px; color: #555850; }
.discovery-details { margin: 0; border-top: 1px solid var(--discovery-line); border-bottom: 1px solid var(--discovery-line); }
.discovery-details + .discovery-details { border-top: 0; }
.discovery-details summary { cursor: pointer; padding: 17px 0; color: var(--discovery-ink); font-weight: 600; list-style: none; }
.discovery-details summary::-webkit-details-marker { display: none; }
.discovery-details summary::after { content: "+"; float: right; color: var(--discovery-muted); font: 1.2rem/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.discovery-details[open] summary::after { content: "−"; }
.discovery-details > p { margin: 0 0 16px; }
.discovery-details .discovery-code { margin: 0 0 18px; }
.discovery-tasks { margin-top: 64px; }
.discovery-tasks h2 { margin-top: 10px; }
.discovery-tasks .discovery-card { border-top: 1px solid var(--discovery-line); }
.policy-page .discovery-hero { padding: 58px 0 34px; }
.policy-page .discovery-hero h1 { max-width: 780px; font-size: clamp(2.45rem, 5vw, 4.55rem); }
.policy-page .discovery-hero .discovery-lead { max-width: 720px; }
.policy-page section[id] { scroll-margin-top: 34px; }
.policy-switcher { display: grid; grid-template-columns: minmax(180px, .6fr) minmax(0, 1.4fr); gap: 28px; align-items: stretch; margin: 0 0 46px; padding: 22px 0; border-top: 1px solid var(--discovery-line); border-bottom: 1px solid var(--discovery-line); }
.policy-switcher-heading { display: flex; flex-direction: column; justify-content: center; }
.policy-switcher-heading p { margin: 9px 0 0; color: var(--discovery-muted); font-size: .92rem; }
.policy-switcher-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.policy-switcher-link { display: flex; flex-direction: column; justify-content: center; min-height: 78px; padding: 14px 16px; border: 1px solid var(--discovery-line); border-radius: 6px; background: var(--discovery-surface); text-decoration: none; transition: border-color 180ms ease, background 180ms ease, transform 180ms ease; }
.policy-switcher-link:hover { border-color: var(--discovery-accent); background: var(--discovery-accent-soft); transform: translateY(-2px); }
.policy-switcher-link[aria-current="page"] { border-color: var(--discovery-accent); background: var(--discovery-accent-soft); box-shadow: inset 3px 0 var(--discovery-accent); }
.policy-switcher-link strong { font-size: .98rem; }
.policy-switcher-link span { margin-top: 3px; color: var(--discovery-muted); font-size: .78rem; line-height: 1.4; }
.policy-toc { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0 0 46px; padding: 0 0 15px; border-bottom: 1px solid var(--discovery-line); color: var(--discovery-muted); font-size: .82rem; }
.policy-toc > span { color: var(--discovery-ink); font-weight: 700; }
.policy-toc a { color: var(--discovery-muted); text-underline-offset: 3px; }
.policy-toc a:hover { color: var(--discovery-ink); }
.policy-page .discovery-hero-actions { margin-top: 24px; }
.policy-page .discovery-cta { min-height: var(--ap-primary-height); padding: 0 18px; font-size: .9rem; }
.discovery-footer { margin-top: 90px; padding: 26px 0 48px; border-top: 1px solid var(--discovery-line); color: var(--discovery-muted); font-size: .9rem; }

@keyframes discovery-float { 0%, 100% { transform: translateY(0) rotate(2.5deg); } 50% { transform: translateY(-9px) rotate(1deg); } }
@keyframes discovery-float-small { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 { font-family: "Noto Serif SC", "STKaiti", serif; font-weight: 650; letter-spacing: -.07em; }
html[lang="zh-CN"] .discovery-capabilities h3 { font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif; font-weight: 700; letter-spacing: -.025em; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; } }
@media (max-width: 900px) { .discovery-hero--split { grid-template-columns: 1fr; gap: 34px; } .discovery-art { max-width: 600px; margin: 0 auto; width: 100%; } .discovery-visual { max-width: 600px; min-height: 330px; margin: 0 auto; width: 100%; } .discovery-loop, .discovery-fit, .policy-switcher { grid-template-columns: 1fr; gap: 16px; } }
@media (max-width: 760px) { .discovery-shell { width: min(100% - 28px, 680px); } .discovery-nav { align-items: flex-start; flex-direction: column; gap: 12px; } .discovery-links { gap: 10px 16px; } .discovery-hero { padding-top: 52px; } .policy-page .discovery-hero { padding-top: 42px; } h1 { font-size: clamp(2.55rem, 13vw, 4rem); } .discovery-grid { grid-template-columns: 1fr; } .policy-switcher-links { grid-template-columns: 1fr; } .policy-switcher-link { min-height: 0; } .policy-toc { flex-wrap: nowrap; overflow-x: auto; margin-right: -14px; padding-right: 14px; padding-bottom: 12px; white-space: nowrap; } .discovery-loop-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } .discovery-float--top { right: 0; } .discovery-float--bottom { left: 0; } }
@media (max-width: 430px) { .discovery-visual { min-height: 280px; } .discovery-window { width: 90%; } .discovery-window-body { min-height: 175px; } .discovery-loop-steps { gap: 8px; } .discovery-loop-steps li { min-height: 112px; padding: 12px; } }