/* Fynvra 首页样式：<html data-theme> 切换明暗，语言由 /zh/、/en/ 静态路由决定。 */

:root {
  color-scheme: light;
  --paper: #f7f6f2;
  --paper-2: #efede6;
  --surface: #fffefb;
  --surface-2: #f9f8f3;
  --ink: #121310;
  --ink-2: #4b4c45;
  --ink-3: #6e6f65;
  --line: #e3e0d6;
  --line-2: #cec9bc;
  --accent: #2d5bff;
  --accent-text: #2447c9;
  --accent-soft: #e9edff;
  --accent-2: #0e8f72;
  --accent-3: #c26a34;
  --btn-bg: #161712;
  --btn-ink: #fffefb;
  --ok: #0d7a52;
  --warn: #9a5a16;
  --bad: #bf3b2f;
  --lane-1: #161712;
  --lane-2: #0e8f72;
  --lane-3: #2d5bff;
  --grid: rgb(18 19 16 / 4.5%);
  --code-bg: #141612;
  --code-ink: #edefe8;
  --code-dim: #8b9187;
  --code-ok: #79e2ae;
  --app-bg: #fdfcf9;
  --app-side: #f4f2ec;
  --app-tool: #f7f5ef;
  --app-line: #e6e2d8;
  --shadow-card: 0 1px 0 rgb(255 255 255 / 80%) inset, 0 20px 44px -36px rgb(18 19 16 / 38%);
  --shadow-lg: 0 60px 120px -52px rgb(18 24 16 / 38%), 0 24px 50px -34px rgb(18 24 16 / 22%);
  --glow-blue: color-mix(in srgb, var(--accent) 16%, transparent);
  --glow-mint: color-mix(in srgb, var(--accent-2) 14%, transparent);
  --glow-warm: color-mix(in srgb, var(--accent-3) 12%, transparent);
  --grain: 0.035;
  --font-sans:
    "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    "Source Han Sans SC", sans-serif;
  --font-mono:
    "JetBrains Mono", "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --nav-h: 76px;
  --gutter: clamp(20px, 4vw, 40px);
  --radius: 22px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #080808;
  --paper-2: #0c0c0c;
  --surface: #101010;
  --surface-2: #141414;
  --ink: #f5f5f5;
  --ink-2: #bdbdbd;
  --ink-3: #8a8a8a;
  --line: #242424;
  --line-2: #383838;
  --accent: #8ba5ff;
  --accent-text: #a9bcff;
  --accent-soft: #1a1a1a;
  --accent-2: #5fe0bd;
  --accent-3: #f0a06b;
  --btn-bg: #f5f5f5;
  --btn-ink: #0a0a0a;
  --ok: #68dda8;
  --warn: #f0c674;
  --bad: #ff8a80;
  --lane-1: #f5f5f5;
  --lane-2: #5fe0bd;
  --lane-3: #8ba5ff;
  --grid: rgb(255 255 255 / 4.5%);
  --code-bg: #0a0a0a;
  --code-ink: #f0f0f0;
  --code-dim: #8a8a8a;
  --code-ok: #79e2ae;
  --app-bg: #111111;
  --app-side: #0a0a0a;
  --app-tool: #161616;
  --app-line: #2a2a2a;
  --shadow-card: 0 1px 0 rgb(255 255 255 / 4%) inset, 0 20px 44px -36px rgb(0 0 0 / 60%);
  --shadow-lg: 0 70px 130px -50px rgb(0 0 0 / 80%), 0 0 0 1px rgb(255 255 255 / 5%);
  --glow-blue: transparent;
  --glow-mint: transparent;
  --glow-warm: transparent;
  --grain: 0;
}

/* 基础 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 620px at 50% -220px, var(--glow-blue), transparent 72%), var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: var(--grain);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

:root[data-theme="dark"] body::before {
  mix-blend-mode: screen;
}

html:root[data-locale="zh"] [data-l="en"],
html:root[data-locale="en"] [data-l="zh"] {
  display: none;
}

:root:not(.js) button[data-action] {
  display: none;
}

h1,
h2,
h3,
h4,
p,
dl,
dd,
figure,
blockquote {
  margin: 0;
}

ul[class],
ol[class] {
  margin: 0;
  padding: 0;
  list-style: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

code,
kbd,
pre {
  font-family: var(--font-mono);
}

code {
  padding: 0.12em 0.4em;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper-2);
  font-size: 0.86em;
  overflow-wrap: anywhere;
}

pre code,
.window code,
.vg code {
  padding: 0;
  border: 0;
  background: none;
  font-size: inherit;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0.1em 0.45em;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.8em;
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
}

::selection {
  background: color-mix(in srgb, var(--accent) 24%, transparent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: min(100% - 2 * var(--gutter), 1200px);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 12px;
}

/* 按钮与小部件 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 650;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 0.18s var(--ease),
    background-color 0.2s,
    border-color 0.2s,
    color 0.2s,
    box-shadow 0.2s;
}

.btn:active {
  transform: translateY(1px);
}

.btn svg {
  width: 17px;
  height: 17px;
  flex: none;
}

.btn-primary {
  border-color: transparent;
  background: var(--btn-bg);
  color: var(--btn-ink);
  box-shadow: 0 14px 30px -18px rgb(18 19 16 / 62%);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--btn-bg) 88%, var(--accent));
  transform: translateY(-2px);
  box-shadow: 0 20px 38px -20px rgb(18 19 16 / 58%);
}

:root[data-theme="dark"] .btn-primary:hover {
  background: #ffffff;
}

.btn-ghost {
  border-color: var(--line-2);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  color: var(--ink);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  border-color: var(--ink-3);
  background: var(--surface);
  transform: translateY(-2px);
}

.btn-sm {
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  text-decoration: none;
  cursor: pointer;
  transition:
    border-color 0.2s,
    background-color 0.2s,
    color 0.2s;
}

.icon-btn:hover {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.lang-btn {
  width: auto;
  min-width: 38px;
  padding: 0 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

:root[data-theme="dark"] .icon-moon,
:root:not([data-theme="dark"]) .icon-sun {
  display: none;
}

.pill {
  --pill: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--pill) 14%, transparent);
  color: var(--pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
}

.pill-ok {
  --pill: var(--ok);
}

.pill-warn {
  --pill: var(--warn);
}

.pill-run {
  --pill: var(--accent-text);
}

.pill-bad {
  --pill: var(--bad);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.eyebrow b {
  color: var(--accent-text);
  font-weight: 600;
}

.eyebrow b::after {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  margin-left: 12px;
  vertical-align: middle;
  background: currentColor;
}

.ui {
  padding: 0.05em 0.35em;
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 11%, transparent);
  color: var(--ink);
  font-weight: 600;
}

/* 顶栏 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.5) blur(18px);
  transition:
    border-color 0.2s,
    background-color 0.2s;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 18px;
  font-stretch: 112%;
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex: none;
  filter: drop-shadow(0 5px 12px rgb(18 19 16 / 18%));
}

.brand-mark rect {
  fill: var(--ink);
}

.brand-mark path {
  fill: var(--paper);
}

.nav-links {
  display: flex;
  gap: 2px;
}

.nav-links a {
  position: relative;
  padding: 7px 13px;
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 14px;
  text-decoration: none;
  transition:
    color 0.2s,
    background-color 0.2s;
}

.nav-links a:hover {
  background: var(--surface);
  color: var(--ink);
}

.nav-links a[aria-current="page"] {
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--line);
}

.nav-links a[aria-current="page"]::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-download {
  margin-left: 6px;
}

.menu-btn {
  display: none;
}

/* 首屏 */

.hero {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding: clamp(44px, 6.5vw, 92px) 0 clamp(68px, 8vw, 112px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 42%;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(110% 90% at 50% 0%, #000 20%, transparent 78%);
}

.hero::after {
  content: "";
  position: absolute;
  top: -16%;
  left: 50%;
  z-index: -2;
  width: min(1320px, 110vw);
  height: 820px;
  transform: translateX(-50%);
  background:
    radial-gradient(38% 48% at 27% 42%, var(--glow-blue), transparent 70%),
    radial-gradient(32% 42% at 72% 30%, var(--glow-mint), transparent 72%),
    radial-gradient(30% 36% at 54% 78%, var(--glow-warm), transparent 76%);
  filter: blur(24px);
  opacity: 0.85;
  pointer-events: none;
}

.hero-intro {
  display: grid;
  max-width: 1060px;
  margin-inline: auto;
  justify-items: center;
  text-align: center;
}

.hero-title {
  max-width: 1040px;
  margin-top: 30px;
  font-size: clamp(2.05rem, 5.6vw, 5.1rem);
  font-stretch: 112%;
  font-weight: 830;
  letter-spacing: -0.045em;
  line-height: 0.99;
  text-wrap: balance;
}

.hero-title:lang(zh) {
  letter-spacing: -0.01em;
  line-height: 1.12;
}

.rotator {
  display: inline-grid;
  clip-path: inset(-0.08em -0.5em -0.16em);
  color: var(--accent);
}

.rotator > span {
  grid-area: 1 / 1;
  white-space: nowrap;
  opacity: 0;
  animation: word-cycle 10s var(--ease) infinite both;
}

.rotator > span:nth-child(1) {
  animation-delay: -0.4s;
}

.rotator > span:nth-child(2) {
  animation-delay: 2.1s;
}

.rotator > span:nth-child(3) {
  animation-delay: 4.6s;
}

.rotator > span:nth-child(4) {
  animation-delay: 7.1s;
}

.hero-copy {
  display: grid;
  max-width: 760px;
  margin-top: 26px;
  justify-items: center;
}

.hero-lead {
  max-width: 66ch;
  color: var(--ink-2);
  font-size: clamp(1.02rem, 1.4vw, 1.16rem);
  line-height: 1.75;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 10px;
  margin-top: 20px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
}

.hero-meta a {
  color: var(--ink-2);
  text-underline-offset: 3px;
}

.spec-strip {
  display: grid;
  gap: 16px;
  margin-top: clamp(32px, 4vw, 48px);
  padding: 20px clamp(18px, 3vw, 28px) 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface) 76%, transparent);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.spec-strip-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.spec-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.spec-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.spec-strip-title {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.spec-strip dl {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin: 0;
}

.spec-strip dl div {
  min-width: 0;
  padding: 0 16px;
  border-left: 1px solid var(--line);
}

.spec-strip dl div:first-child {
  padding-left: 0;
  border-left: 0;
}

.spec-strip dt {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.spec-strip dd {
  margin-top: 5px;
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* 产品示意窗口 */

.showcase {
  position: relative;
  isolation: isolate;
  margin-top: clamp(44px, 6vw, 72px);
}

.showcase::before {
  content: "";
  position: absolute;
  inset: 28px 1% -44px;
  z-index: -1;
  background: radial-gradient(
    60% 70% at 50% 45%,
    color-mix(in srgb, var(--accent) 18%, transparent),
    transparent 74%
  );
  filter: blur(48px);
  opacity: 0.7;
  pointer-events: none;
}

.showcase .window {
  border-radius: 18px;
}

/* 界面示意状态 */

.bench-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.bench-tabs button {
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  font-weight: 600;
  cursor: pointer;
}

.bench-tabs button[aria-selected="true"] {
  border-color: var(--ink);
  background: var(--btn-bg);
  color: var(--btn-ink);
}

.bench-panel {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.bench-panel[hidden],
[data-side][hidden] {
  display: none;
}

.bench-hint,
.bench-empty {
  margin: 8px 0;
  color: var(--ink-3);
}

.composer-send.is-hot {
  transform: scale(0.94);
}

.window {
  overflow: hidden;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--app-bg);
  box-shadow: var(--shadow-lg);
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.5;
}

.window-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid var(--app-line);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--app-side) 70%, var(--surface)),
    var(--app-side)
  );
}

.window-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 650;
}

.window-brand .brand-mark {
  width: 16px;
  height: 16px;
}

.window-title {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.window-controls {
  display: flex;
  justify-content: flex-end;
  gap: 7px;
}

.window-controls i {
  width: 9px;
  height: 9px;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: var(--app-bg);
  opacity: 0.9;
}

.window-body {
  display: grid;
  grid-template-columns: 214px minmax(0, 1fr) 274px;
  height: 560px;
}

.app-side {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 10px;
  border-right: 1px solid var(--app-line);
  background: var(--app-side);
}

.side-label {
  margin: 10px 8px 4px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.side-label:first-child {
  margin-top: 0;
}

.side-item,
.side-session {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 7px;
  color: var(--ink-2);
}

.side-item svg {
  width: 14px;
  height: 14px;
  flex: none;
  color: var(--ink-3);
}

.side-item.is-active,
.side-session.is-active {
  background: var(--app-bg);
  box-shadow: 0 0 0 1px var(--app-line);
  color: var(--ink);
}

.side-branch {
  margin-left: auto;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10.5px;
}

.side-session-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-role {
  margin-left: auto;
  padding: 1px 6px;
  border: 1px solid var(--app-line);
  border-radius: 5px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
}

.side-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 8px;
  color: var(--ink-3);
}

.side-foot svg {
  width: 14px;
  height: 14px;
}

.dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--ink-3);
  opacity: 0.6;
}

.dot-run {
  background: var(--accent);
  opacity: 1;
  animation: pulse 2s ease-out infinite;
}

.dot-wait {
  background: var(--warn);
  opacity: 1;
}

.app-chat {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.chat-tabs {
  display: flex;
  gap: 2px;
  padding: 6px 8px 0;
  border-bottom: 1px solid var(--app-line);
}

.chat-tab {
  padding: 6px 12px;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
  color: var(--ink-3);
  white-space: nowrap;
}

.chat-tab.is-active {
  margin-bottom: -1px;
  border-color: var(--app-line);
  background: var(--app-bg);
  color: var(--ink);
}

.chat-tab-add {
  font-family: var(--font-mono);
}

.chat-stream {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  overflow: hidden;
  padding: 16px 18px;
  mask-image: linear-gradient(to bottom, transparent, #000 48px);
}

.bench-panel .chat-stream {
  flex: 1;
}

.msg {
  max-width: 92%;
}

.msg-user {
  align-self: flex-end;
  padding: 9px 13px;
  border-radius: 12px 12px 4px;
  background: var(--ink);
  color: var(--paper);
}

.msg-agent {
  color: var(--ink-2);
}

.tool {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border: 1px solid var(--app-line);
  border-radius: 8px;
  background: var(--app-tool);
  white-space: nowrap;
}

.tool-name {
  color: var(--ink);
  font-weight: 600;
}

.tool-text {
  min-width: 0;
  overflow: hidden;
  color: var(--ink-2);
  text-overflow: ellipsis;
}

.tool code {
  color: var(--ink-3);
  font-size: 11px;
}

.tool-tag {
  padding: 0 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--lane-3) 15%, transparent);
  color: var(--lane-3);
  font-family: var(--font-mono);
  font-size: 10.5px;
}

.tool-status {
  margin-left: auto;
  color: var(--ok);
  font-family: var(--font-mono);
  font-size: 11px;
}

.inbox {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  color: var(--ink-3);
  font-size: 12px;
}

.inbox::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--app-line);
}

.typing code {
  color: var(--ink);
  font-size: 11.5px;
}

.caret {
  display: inline-block;
  width: 7px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

.composer {
  margin: 0 14px 14px;
  padding: 10px 12px;
  border: 1px solid var(--app-line);
  border-radius: 12px;
  background: var(--app-bg);
  box-shadow: 0 6px 18px -12px rgb(0 0 0 / 30%);
}

.composer-input {
  color: var(--ink-3);
}

.composer-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
}

.chip {
  padding: 3px 8px;
  border: 1px solid var(--app-line);
  border-radius: 6px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 10.5px;
  white-space: nowrap;
}

.chip-approval {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent-text);
}

.composer-send {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin-left: auto;
  border-radius: 7px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
}

.app-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 12px 12px;
  border-left: 1px solid var(--app-line);
  background: var(--app-side);
}

.panel-tabs {
  display: flex;
  gap: 16px;
  margin: 0 -12px;
  padding: 10px 14px 0;
  border-bottom: 1px solid var(--app-line);
  color: var(--ink-3);
}

.panel-tabs span {
  padding-bottom: 8px;
}

.panel-tabs .is-active {
  box-shadow: inset 0 -2px 0 var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.panel-progress {
  display: grid;
  gap: 6px;
  padding-top: 2px;
  color: var(--ink-3);
  font-size: 11.5px;
}

.bar {
  display: block;
  height: 4px;
  overflow: hidden;
  border-radius: 4px;
  background: var(--app-line);
}

.bar i {
  display: block;
  width: 33%;
  height: 100%;
  border-radius: inherit;
  background: var(--ok);
  animation: grow 1.4s var(--ease) 1.2s both;
}

.task {
  position: relative;
  display: grid;
  gap: 5px;
  padding: 10px 11px;
  border: 1px solid var(--app-line);
  border-radius: 9px;
  background: var(--app-bg);
}

.task.is-focus {
  border-color: color-mix(in srgb, var(--warn) 55%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 12%, transparent);
}

.task-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.task-title {
  color: var(--ink);
  font-weight: 600;
}

.task code {
  color: var(--ink-3);
  font-size: 10.5px;
}

.task-meta {
  color: var(--ink-3);
  font-size: 11px;
}

.pin {
  position: absolute;
  top: -8px;
  right: -6px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--ink) 14%, transparent);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: normal;
  font-weight: 600;
}

.composer-bar .pin {
  position: static;
  margin-left: 4px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  margin-top: 22px;
  color: var(--ink-2);
  font-size: 13.5px;
}

.legend > span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.legend b {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* 协议条 */

.strip {
  border-block: 1px solid var(--line);
  background: linear-gradient(
    180deg,
    var(--paper-2),
    color-mix(in srgb, var(--paper-2) 55%, var(--paper))
  );
}

.strip-inner {
  display: grid;
  gap: 16px;
  padding-block: 30px;
}

.strip-row {
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr);
  align-items: center;
  gap: 20px;
}

.strip-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.strip-label::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line-2);
}

.strip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.strip-list li {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
}

.strip-list-muted li {
  border-style: dashed;
  background: transparent;
  color: var(--ink-2);
}

/* 分区 */

.section {
  position: relative;
  padding-block: clamp(92px, 11vw, 156px);
}

.section-alt {
  border-block: 1px solid var(--line);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--paper-2) 72%, var(--paper)),
    var(--paper-2) 46%,
    color-mix(in srgb, var(--paper-2) 68%, var(--paper))
  );
}

.section-head {
  display: grid;
  gap: 18px;
  max-width: 820px;
  margin-bottom: clamp(44px, 6vw, 76px);
}

.eyebrow {
  color: var(--ink-3);
}

.eyebrow b {
  color: var(--accent-text);
}

.eyebrow b::after {
  background: var(--line-2);
}

.section-title {
  font-size: clamp(2.05rem, 4.4vw, 3.5rem);
  font-stretch: 110%;
  font-weight: 820;
  letter-spacing: -0.035em;
  line-height: 1.05;
  text-wrap: balance;
}

.section-title:lang(zh) {
  letter-spacing: -0.01em;
  line-height: 1.18;
}

.section-lead {
  max-width: 64ch;
  color: var(--ink-2);
  font-size: clamp(1.02rem, 1.4vw, 1.14rem);
  line-height: 1.7;
  text-wrap: pretty;
}

/* 能力卡片 */

.bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  transition:
    border-color 0.25s,
    transform 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.card:hover {
  border-color: var(--line-2);
  transform: translateY(-4px);
  box-shadow: 0 30px 60px -42px rgb(18 19 16 / 45%);
}

.card-wide {
  display: grid;
  grid-column: span 2;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 34px;
}

.card-copy {
  display: grid;
  gap: 14px;
}

.card-tag {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card h3 {
  font-size: 1.3rem;
  font-stretch: 106%;
  font-weight: 760;
  letter-spacing: -0.018em;
  line-height: 1.25;
}

.card p {
  color: var(--ink-2);
  font-size: 0.97rem;
  line-height: 1.68;
}

.card-spotlight {
  --paper: #0e110e;
  --paper-2: #171b15;
  --surface: #171b15;
  --surface-2: #1c2119;
  --ink: #f3f4ee;
  --ink-2: #b6bab0;
  --ink-3: #888d82;
  --line: #2c322a;
  --line-2: #3e453b;
  --accent: #8ba5ff;
  --accent-text: #a9bcff;
  --accent-2: #5fe0bd;
  --ok: #68dda8;
  --warn: #f0c674;
  border-color: color-mix(in srgb, var(--accent) 24%, #2c322a);
  background:
    radial-gradient(
      90% 100% at 100% 0%,
      color-mix(in srgb, var(--accent) 18%, transparent),
      transparent 58%
    ),
    radial-gradient(
      70% 80% at 0% 100%,
      color-mix(in srgb, var(--accent-2) 10%, transparent),
      transparent 60%
    ),
    #111411;
  color: var(--ink);
  box-shadow: 0 42px 80px -52px rgb(0 0 0 / 70%);
}

.card-spotlight .card-tag {
  color: var(--accent-text);
}

.card-spotlight .card-copy p {
  color: var(--ink-2);
}

.card-tint {
  border-color: color-mix(in srgb, var(--accent) 18%, var(--line));
  background: linear-gradient(
    155deg,
    color-mix(in srgb, var(--accent) 7%, var(--surface)),
    var(--surface) 58%
  );
}

.card-tint-warm {
  border-color: color-mix(in srgb, var(--accent-3) 22%, var(--line));
  background: linear-gradient(
    155deg,
    color-mix(in srgb, var(--accent-3) 8%, var(--surface)),
    var(--surface) 60%
  );
}

.card-tint-mint {
  border-color: color-mix(in srgb, var(--accent-2) 22%, var(--line));
  background: linear-gradient(
    155deg,
    color-mix(in srgb, var(--accent-2) 8%, var(--surface)),
    var(--surface) 60%
  );
}

.card-showcase {
  background:
    radial-gradient(75% 90% at 100% 0%, var(--glow-blue), transparent 62%),
    linear-gradient(180deg, var(--surface), var(--surface-2));
}

.card-showcase .vg-editor {
  box-shadow: 0 26px 50px -38px rgb(18 19 16 / 50%);
}

.vg {
  margin-top: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 5%);
  font-size: 13px;
  line-height: 1.5;
}

.card-wide .vg {
  margin-top: 0;
}

.vg-title {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.vg-msg {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px dashed var(--line);
}

.vg-msg .pill {
  justify-self: start;
}

.vg-msg b {
  display: block;
  color: var(--ink);
  font-weight: 600;
}

.vg-msg-text {
  color: var(--ink-2);
}

.vg-msg time {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.vg-tree {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2;
}

.vg-tree div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  white-space: nowrap;
}

.vg-tree span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.t-dim {
  color: var(--ink-3);
}

.t-b1 {
  color: var(--lane-1);
}

.t-b2 {
  color: var(--lane-2);
}

.t-b3 {
  color: var(--lane-3);
}

.vg-role-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.vg-role-head b {
  display: block;
}

.vg-role-head span:not(.avatar) {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 8px;
  background: color-mix(in srgb, var(--lane-3) 16%, transparent);
  color: var(--lane-3);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.vg-role dl div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 5px 0;
}

.vg-role dt {
  color: var(--ink-3);
}

.vg-role dd {
  font-weight: 500;
  text-align: right;
}

.vg-approval {
  display: grid;
  gap: 10px;
}

.vg-approval-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.vg-cmd {
  display: block;
  overflow: hidden;
  padding: 8px 10px;
  border-radius: 7px;
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vg-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.btn-mini {
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  background: var(--surface);
  font-size: 12px;
}

.btn-mini.is-primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.vg-modes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--ink-3);
  font-size: 11.5px;
}

.seg {
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.seg.is-active {
  border-color: var(--accent);
  color: var(--accent-text);
}

.vg-modes kbd {
  margin-left: auto;
}

.vg-protocols li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
}

.vg-protocols li::after {
  content: "✓";
  color: var(--ok);
}

.vg-levels {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 12px;
}

.vg-levels span {
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.vg-levels .is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.vg-editor {
  overflow: hidden;
  padding: 0;
}

.vg-tabs {
  display: flex;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
  font-size: 12px;
}

.vg-tabs span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-right: 1px solid var(--line);
  color: var(--ink-3);
  white-space: nowrap;
}

.vg-tabs .is-active {
  background: var(--paper);
  box-shadow: inset 0 2px 0 var(--accent);
  color: var(--ink);
}

.unsaved {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.vg-diff {
  padding: 10px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
}

.vg-diff div {
  overflow: hidden;
  padding: 0 14px;
  text-overflow: ellipsis;
  white-space: pre;
}

.d-hunk {
  color: var(--lane-3);
}

.d-ctx {
  color: var(--ink-3);
}

.d-add {
  background: color-mix(in srgb, var(--ok) 13%, transparent);
  color: var(--ink);
}

.d-del {
  background: color-mix(in srgb, var(--bad) 11%, transparent);
  color: var(--ink-2);
}

.vg-term {
  overflow: hidden;
  padding: 10px 14px;
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-prompt {
  color: var(--code-dim);
}

.t-ok {
  color: var(--code-ok);
}

.vg-kpis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.vg-kpis div {
  display: grid;
  gap: 4px;
}

.vg-kpis b {
  font-size: 1.6rem;
  font-stretch: 110%;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}

.vg-kpis span {
  color: var(--ink-3);
  font-size: 11.5px;
}

.vg-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 64px;
  margin: 16px 0 12px;
}

.vg-bars i {
  height: var(--h);
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: color-mix(in srgb, var(--ink) 16%, transparent);
  transform-origin: bottom;
}

.vg-bars i:last-child {
  background: var(--accent);
}

.vg-range {
  display: flex;
  gap: 4px;
  font-size: 11.5px;
}

/* 工作流 */

.lanes {
  overflow-x: auto;
  padding: clamp(16px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(var(--grid) 1px, transparent 1px) 0 0 / 22px 22px,
    var(--surface);
  box-shadow: var(--shadow-card);
}

.lanes svg {
  width: 100%;
  min-width: 720px;
  height: auto;
  overflow: visible;
}

.ln {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.ln-main {
  stroke: var(--ink);
}

.ln-1 {
  stroke: var(--lane-1);
}

.ln-2 {
  stroke: var(--lane-2);
}

.ln-3 {
  stroke: var(--lane-3);
}

.nd {
  fill: var(--surface);
  stroke-width: 2.5;
}

.nd-1 {
  stroke: var(--lane-1);
}

.nd-2 {
  stroke: var(--lane-2);
}

.nd-3 {
  stroke: var(--lane-3);
}

.nd-fork {
  fill: var(--ink);
}

.nd-merge {
  fill: var(--ink);
  stroke: var(--surface);
  stroke-width: 3;
}

.nd-check circle {
  fill: var(--ok);
}

.nd-reject circle {
  fill: var(--bad);
}

.nd-check path,
.nd-reject path {
  fill: none;
  stroke: var(--surface);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.lt {
  fill: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 13px;
}

.lt-strong {
  fill: var(--ink);
  font-weight: 600;
}

.lt-1 {
  fill: var(--lane-1);
}

.lt-2 {
  fill: var(--lane-2);
}

.lt-3 {
  fill: var(--lane-3);
}

.lt-tool {
  fill: var(--ink-3);
  font-size: 12px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.step {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  transition:
    border-color 0.25s,
    transform 0.3s var(--ease);
}

.step:hover {
  border-color: var(--line-2);
  transform: translateY(-2px);
}

.bench-panel .step {
  opacity: 0;
}

.bench-panel.is-play .step,
[data-side].is-play .step {
  animation: scene-in 0.4s var(--ease) forwards;
  animation-delay: calc(var(--d, 0) * 0.32s);
}

.step-num {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.step h3 {
  margin: 16px 0 8px;
  font-size: 1.08rem;
  font-weight: 750;
}

.step p {
  color: var(--ink-2);
  font-size: 0.94rem;
  line-height: 1.65;
}

/* 安全 */

.safety {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  gap: clamp(28px, 4vw, 44px);
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.matrix {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.matrix th,
.matrix td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.matrix thead th {
  background: var(--surface-2);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.matrix tbody th {
  font-weight: 650;
}

.matrix tbody th small {
  display: block;
  margin-top: 4px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
}

.matrix tbody tr:last-child > * {
  border-bottom: 0;
}

.matrix tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 3%, transparent);
}

.row-floor {
  background: color-mix(in srgb, var(--bad) 5%, transparent);
}

.matrix tbody tr.row-floor:hover {
  background: color-mix(in srgb, var(--bad) 8%, transparent);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  white-space: nowrap;
}

.mark::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: currentColor;
}

.mark-ask {
  color: var(--accent-text);
}

.mark-auto {
  color: var(--ink-3);
}

.mark-auto::before {
  border: 1.5px solid currentColor;
  background: transparent;
}

.mark-always {
  color: var(--bad);
  font-weight: 600;
}

.guards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.guards-title {
  display: flex;
  grid-column: 1 / -1;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 2px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.guard {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.guard-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-text);
}

.guard-icon svg {
  width: 18px;
  height: 18px;
}

.guard h3 {
  margin-bottom: 6px;
  font-size: 1rem;
  font-weight: 720;
  line-height: 1.35;
}

.guard p {
  color: var(--ink-2);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* 常见问题 */

.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr);
  gap: clamp(32px, 6vw, 80px);
}

.faq .section-head {
  position: sticky;
  top: calc(var(--nav-h) + 32px);
  align-self: start;
  margin-bottom: 0;
}

.faq-list details {
  border-top: 1px solid var(--line-2);
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--line-2);
}

.faq-list summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  font-size: 1.08rem;
  font-weight: 650;
  list-style: none;
  cursor: pointer;
  transition: color 0.2s;
}

.faq-list summary:hover {
  color: var(--accent-text);
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  flex: none;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  transition:
    transform 0.25s var(--ease),
    color 0.2s;
}

.faq-list details[open] summary::after {
  color: var(--accent-text);
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 68ch;
  margin: -4px 0 24px;
  color: var(--ink-2);
}

/* 开始 */

.cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 64px);
  padding: clamp(30px, 6vw, 76px);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, #2b302a);
  border-radius: 28px;
  background:
    radial-gradient(
      90% 100% at 100% 0%,
      color-mix(in srgb, var(--accent) 28%, transparent),
      transparent 58%
    ),
    radial-gradient(
      70% 80% at 0% 100%,
      color-mix(in srgb, var(--accent-2) 15%, transparent),
      transparent 62%
    ),
    #111411;
  box-shadow: 0 50px 100px -60px rgb(0 0 0 / 70%);
  color: #f3f4ee;
}

.cta::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  z-index: -1;
  width: 46%;
  height: 80%;
  border-radius: 50%;
  background: var(--accent);
  filter: blur(100px);
  opacity: 0.22;
  pointer-events: none;
}

.cta .section-head {
  margin-bottom: 0;
}

.cta .eyebrow,
.cta .eyebrow b {
  color: #9fb3ff;
}

.cta .eyebrow b::after {
  background: rgb(255 255 255 / 26%);
}

.cta .section-title {
  color: #f6f7f1;
}

.cta .section-lead {
  color: #b9bdb3;
}

.cta .btn-primary {
  background: #f6f7f1;
  color: #111411;
}

.cta .btn-primary:hover {
  background: #ffffff;
}

.cta .btn-ghost {
  border-color: rgb(255 255 255 / 22%);
  background: rgb(255 255 255 / 5%);
  color: #f3f4ee;
  backdrop-filter: none;
}

.cta .btn-ghost:hover {
  border-color: rgb(255 255 255 / 45%);
  background: rgb(255 255 255 / 10%);
}

.cta .codeblock {
  border-color: rgb(255 255 255 / 10%);
  box-shadow: 0 30px 60px -40px rgb(0 0 0 / 80%);
}

.codeblock {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--code-ink) 10%, transparent);
  border-radius: 14px;
  background: var(--code-bg);
  color: var(--code-ink);
}

.codeblock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 16px;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
  color: var(--code-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.codeblock-bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgb(255 255 255 / 14%);
}

.codeblock-bar i:last-of-type {
  margin-right: 6px;
}

.codeblock pre {
  margin: 0;
  overflow-x: auto;
  padding: 18px 20px;
  font-size: 13px;
  line-height: 1.8;
  tab-size: 2;
}

.copy-btn {
  position: absolute;
  top: 9px;
  right: 10px;
  padding: 4px 11px;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 999px;
  background: rgb(255 255 255 / 6%);
  color: var(--code-ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.copy-btn:hover {
  background: rgb(255 255 255 / 13%);
}

.copy-btn .copy-done,
.copy-btn[data-state="done"] .copy-idle {
  display: none;
}

.copy-btn[data-state="done"] .copy-done {
  display: inline;
  color: var(--code-ok);
}

/* 页脚 */

.site-footer {
  padding: 72px 0 34px;
  border-top: 1px solid var(--line);
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in srgb, var(--paper-2) 48%, transparent)
  );
  color: var(--ink-2);
  font-size: 14.5px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 36px;
}

.footer-brand p {
  max-width: 34ch;
  margin-top: 16px;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 14px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* 文档 */

.docs-hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  padding: clamp(44px, 6vw, 88px) 0 clamp(36px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.docs-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(100% 90% at 30% 0%, #000 15%, transparent 78%);
}

.docs-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -8%;
  z-index: -2;
  width: 760px;
  height: 720px;
  background:
    radial-gradient(45% 45% at 50% 50%, var(--glow-blue), transparent 72%),
    radial-gradient(35% 38% at 72% 30%, var(--glow-mint), transparent 74%);
  filter: blur(34px);
  opacity: 0.85;
  pointer-events: none;
}

.docs-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 390px);
  align-items: start;
  gap: clamp(32px, 6vw, 84px);
}

.docs-hero-copy {
  min-width: 0;
}

.docs-hero h1 {
  max-width: 780px;
  margin-top: 22px;
  font-size: clamp(2.35rem, 5.1vw, 4.1rem);
  font-stretch: 112%;
  font-weight: 830;
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

.docs-hero h1:lang(zh) {
  letter-spacing: -0.01em;
  line-height: 1.12;
}

.docs-hero .section-lead {
  max-width: 60ch;
  margin-top: 18px;
  line-height: 1.72;
}

.docs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 24px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.docs-meta span {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 74%, transparent);
}

.docs-jump {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.docs-jump-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 7px 10px 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.jump-link {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 13px 12px;
  border-radius: 13px;
  color: var(--ink);
  text-decoration: none;
  transition:
    background-color 0.2s,
    color 0.2s;
}

.jump-link:hover {
  background: var(--paper-2);
}

.jump-num {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

.jump-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.jump-label {
  font-size: 14.5px;
  font-weight: 650;
  line-height: 1.35;
}

.jump-desc {
  color: var(--ink-3);
  font-size: 12.5px;
  line-height: 1.45;
}

.jump-arrow {
  color: var(--ink-3);
  font-family: var(--font-mono);
  transition:
    color 0.2s,
    transform 0.2s var(--ease);
}

.jump-link:hover .jump-arrow {
  color: var(--accent-text);
  transform: translateX(3px);
}

.docs-jump-foot {
  margin-top: 8px;
  padding: 12px 10px 2px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.docs-jump-foot a {
  color: var(--ink-3);
  text-decoration: none;
}

.docs-jump-foot a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.docs-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 68px);
  padding-block: 44px 124px;
}

.toc {
  position: sticky;
  top: calc(var(--nav-h) + 28px);
  align-self: start;
  max-height: calc(100vh - var(--nav-h) - 56px);
  padding: 16px 12px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}

.toc-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 10px 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.toc-title::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.toc-progress {
  height: 2px;
  margin: 0 10px 14px;
  overflow: hidden;
  border-radius: 2px;
  background: var(--line);
}

.toc-progress i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 0.1s linear;
}

.toc ol {
  position: relative;
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  display: flex;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition:
    color 0.2s,
    background-color 0.2s;
}

.toc a:hover {
  background: var(--paper-2);
  color: var(--ink);
}

.toc a[aria-current="true"] {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}

.toc a[aria-current="true"] .toc-num {
  color: var(--accent-text);
}

.toc-num {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
}

.docs-main {
  counter-reset: sec;
  min-width: 0;
  max-width: 770px;
}

.doc-section {
  margin-bottom: 72px;
  counter-increment: sec;
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

.prose {
  color: var(--ink-2);
  font-size: 1.01rem;
  line-height: 1.78;
}

.prose h2 {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: clamp(1.65rem, 2.6vw, 2.15rem);
  font-stretch: 108%;
  font-weight: 810;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.prose h2:lang(zh) {
  letter-spacing: -0.005em;
}

.prose h2::before {
  content: counter(sec, decimal-leading-zero);
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 24px;
  flex: none;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0;
}

.prose h3 {
  margin: 36px 0 10px;
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 750;
  line-height: 1.35;
}

.prose p + p,
.prose p + ul,
.prose p + ol,
.prose ul + p,
.prose ol + p {
  margin-top: 14px;
}

.prose ul:not([class]),
.prose ol:not([class]) {
  margin: 14px 0 0;
  padding-left: 1.35em;
}

.prose li + li {
  margin-top: 7px;
}

.prose li::marker {
  color: var(--ink-3);
}

.prose strong {
  color: var(--ink);
}

.prose a {
  color: var(--accent-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prose .codeblock {
  margin: 18px 0;
}

.prose .table-scroll {
  margin: 18px 0;
  border-radius: 14px;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
}

.prose th,
.prose td {
  padding: 12px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.prose thead th {
  background: var(--surface-2);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.prose tbody th,
.prose td:first-child {
  color: var(--ink);
}

.prose tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 3%, transparent);
}

.prose tbody tr:last-child > * {
  border-bottom: 0;
}

.callout {
  margin: 22px 0;
  padding: 16px 20px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
  border-left: 3px solid var(--accent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  font-size: 0.96rem;
  line-height: 1.72;
}

.callout-title {
  display: block;
  margin-bottom: 5px;
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.callout-warn {
  border-color: color-mix(in srgb, var(--warn) 22%, var(--line));
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 6%, var(--surface));
}

.callout-warn .callout-title {
  color: var(--warn);
}

.steps-list {
  margin: 24px 0 8px;
  counter-reset: step;
}

.steps-list > li {
  position: relative;
  padding: 0 0 26px 54px;
  counter-increment: step;
}

.steps-list > li::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 650;
}

.steps-list > li::after {
  content: "";
  position: absolute;
  top: 40px;
  bottom: 6px;
  left: 17px;
  width: 1px;
  background: var(--line-2);
}

.steps-list > li:last-child {
  padding-bottom: 0;
}

.steps-list > li:last-child::after {
  display: none;
}

.steps-list h3 {
  margin: 5px 0 6px;
  font-size: 1.08rem;
}

.defs {
  display: grid;
  grid-template-columns: minmax(130px, 190px) minmax(0, 1fr);
  margin: 20px 0;
  border-top: 1px solid var(--line);
}

.defs dt,
.defs dd {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.defs dt {
  padding-right: 20px;
  color: var(--ink);
  font-weight: 700;
}

.status-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin: 16px 0;
  color: var(--ink-3);
}

.status-flow span:not([aria-hidden="true"]) {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.status-flow span[aria-hidden="true"] {
  color: var(--line-2);
  font-family: var(--font-mono);
}

.cmd-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
}

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: none;
  transition:
    border-color 0.2s,
    color 0.2s;
}

.back-top:hover {
  border-color: var(--line-2);
  color: var(--ink);
}

/* 操作演示 */

.stage {
  display: grid;
  grid-template-columns: 226px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.stage-nav {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  display: grid;
  gap: 2px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface) 76%, transparent);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.stage-nav button {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--ink-2);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition:
    background-color 0.2s,
    border-color 0.2s,
    color 0.2s,
    transform 0.2s var(--ease);
}

.stage-nav button:hover {
  background: var(--surface);
  color: var(--ink);
}

.stage-nav button[aria-selected="true"] {
  border-color: var(--line);
  background: var(--surface-2);
  color: var(--ink);
  box-shadow: inset 3px 0 0 var(--accent);
}

.stage-num {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

.stage-nav button[aria-selected="true"] .stage-num {
  color: var(--accent-text);
}

.stage-frame {
  min-width: 0;
}

.scene {
  display: none;
}

.scene.is-on {
  display: block;
  animation: scene-swap 0.45s var(--ease);
}

.scene-body {
  padding: 22px;
  background: var(--app-bg);
}

.scene-split {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 18px;
  min-height: 280px;
}

.scene-side {
  display: grid;
  align-content: start;
  gap: 8px;
}

.scene-empty,
.scene-toast,
.scene-kicker,
.scene-note,
.picker,
.approval,
.diff-head,
.diff,
.check-row,
.merge-row,
.scene-chat .beat {
  opacity: 0;
}

.scene.is-play .beat {
  animation: scene-in 0.55s var(--ease) forwards;
  animation-delay: calc(var(--d) * 0.42s);
}

.scene-empty {
  padding: 10px 12px;
  border: 1px dashed var(--app-line);
  border-radius: 8px;
  color: var(--ink-3);
  font-size: 13px;
}

.scene.is-play .scene-empty {
  animation: scene-leave 2.4s var(--ease) forwards;
}

.scene-toast {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12.5px;
}

.scene-kicker {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.picker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 14px 14px 14px 16px;
  border: 1px solid var(--app-line);
  border-radius: 12px;
  background: var(--surface);
}

.picker-path {
  font-family: var(--font-mono);
  font-size: 13px;
}

.picker-ok,
.solid-btn {
  padding: 7px 12px;
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--btn-ink);
  font-size: 13px;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.scene.is-play .picker-ok {
  animation: scene-press 0.7s var(--ease) 1.15s both;
}

.scene-note {
  max-width: 46ch;
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 14.5px;
}

.scene-chat {
  display: grid;
  gap: 10px;
  min-height: 280px;
  align-content: start;
}

.approval {
  max-width: 560px;
  margin: 12px auto;
  padding: 18px 18px 16px;
  border: 1px solid var(--app-line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.approval-kicker {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.approval-title {
  margin-top: 6px;
  font-size: 1.25rem;
  font-weight: 750;
}

.approval-cmd {
  margin: 12px 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-ink);
  overflow-x: auto;
}

.approval-cmd code {
  color: inherit;
}

.approval-hint {
  color: var(--ink-2);
  font-size: 14px;
}

.approval-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.ghost-btn {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 650;
}

.scene.is-play .solid-btn {
  animation:
    scene-in 0.55s var(--ease) forwards,
    scene-press 0.7s var(--ease) 1.6s both;
  animation-delay: calc(var(--d) * 0.42s), 1.6s;
}

.diff-head,
.check-row,
.merge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.diff {
  margin: 12px 0;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--code-bg);
  color: var(--code-ink);
  overflow-x: auto;
}

.diff-add {
  color: var(--code-ok);
}

.diff-del {
  color: #e07a72;
}

.diff-stat {
  color: var(--ok);
}

.check-row,
.merge-row {
  margin-top: 10px;
}

@keyframes scene-leave {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }

  18%,
  58% {
    opacity: 1;
    transform: none;
  }

  100% {
    opacity: 0;
    transform: translateY(-6px);
  }
}

@keyframes scene-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes scene-press {
  0%,
  100% {
    transform: none;
  }
  40% {
    transform: translateY(1px) scale(0.98);
    box-shadow: inset 0 0 0 1px var(--ink);
  }
}

@keyframes scene-swap {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 动效 */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
}

@keyframes word-cycle {
  0% {
    opacity: 0;
    transform: translateY(0.55em);
  }

  4%,
  21% {
    opacity: 1;
    transform: none;
  }

  25%,
  100% {
    opacity: 0;
    transform: translateY(-0.55em);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent);
  }

  70%,
  100% {
    box-shadow: 0 0 0 7px transparent;
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes grow {
  from {
    width: 0;
  }
}

.rise {
  animation: rise 0.9s var(--ease) both;
  animation-delay: calc(var(--i, 0) * 90ms + 80ms);
}

.seq {
  animation: rise 0.55s var(--ease) both;
  animation-delay: calc(var(--s, 0) * 0.3s + 1s);
}

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.js .reveal .vg-bars i {
  transform: scaleY(0);
  transition: transform 0.8s var(--ease) calc(var(--n, 0) * 70ms + 0.3s);
}

.js .reveal.is-visible .vg-bars i {
  transform: none;
}

.js .lanes .draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.6s var(--ease) var(--d, 0s);
}

.js .lanes.is-visible .draw {
  stroke-dashoffset: 0;
}

.js .lanes .pop {
  opacity: 0;
  transform: scale(0.3);
  transform-box: fill-box;
  transform-origin: center;
  transition:
    opacity 0.35s ease var(--d, 0s),
    transform 0.5s var(--ease) var(--d, 0s);
}

.js .lanes.is-visible .pop {
  opacity: 1;
  transform: none;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .rise,
  .seq,
  .badge-dot,
  .dot-run,
  .caret,
  .bar i,
  .rotator > span,
  .scene,
  .scene .beat,
  .scene-empty,
  .picker-ok,
  .solid-btn {
    animation: none;
  }

  .scene .beat,
  .bench-panel .step,
  [data-side] .step,
  .scene-empty,
  .scene-toast,
  .scene-kicker,
  .scene-note,
  .picker,
  .approval,
  .diff-head,
  .diff,
  .check-row,
  .merge-row,
  .scene-chat .beat {
    opacity: 1;
    transform: none;
  }

  .rotator > span:first-child {
    opacity: 1;
  }

  .card,
  .step,
  .js .reveal,
  .js .reveal .vg-bars i,
  .js .lanes .draw,
  .js .lanes .pop {
    transition: none;
  }

  .card:hover,
  .step:hover,
  .btn:hover,
  .jump-link:hover .jump-arrow {
    transform: none;
  }

  .toc-progress i {
    transition: none;
  }
}

/* 响应式 */

@media (max-width: 1080px) {
  .window-body {
    grid-template-columns: minmax(0, 1fr) 250px;
  }

  .app-side,
  .legend-side {
    display: none;
  }

  .spec-strip dl {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    row-gap: 22px;
  }

  .spec-strip dl div:nth-child(4n + 1) {
    padding-left: 0;
    border-left: 0;
  }

  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .faq {
    grid-template-columns: minmax(0, 1fr);
  }

  .faq .section-head {
    position: static;
  }

  .guards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1000px) {
  .docs-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 34px;
  }

  .docs-jump {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .docs-jump-title,
  .docs-jump-foot {
    grid-column: 1 / -1;
  }

  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-top: 0;
  }

  .docs-main {
    margin-inline: auto;
  }

  .toc {
    top: var(--nav-h);
    z-index: 20;
    max-height: none;
    margin: 0 calc(-1 * var(--gutter)) 24px;
    padding: 0;
    overflow: visible;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: color-mix(in srgb, var(--paper) 92%, transparent);
    box-shadow: none;
    backdrop-filter: blur(12px);
  }

  .toc-title {
    display: none;
  }

  .toc-progress {
    height: 2px;
    margin: 0;
    border-radius: 0;
  }

  .toc ol {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding: 10px var(--gutter);
    scrollbar-width: none;
  }

  .toc a {
    white-space: nowrap;
  }

  .toc a[aria-current="true"] {
    box-shadow: none;
  }

  .doc-section {
    scroll-margin-top: calc(var(--nav-h) + 64px);
  }
}

@media (max-width: 900px) {
  .stage {
    grid-template-columns: minmax(0, 1fr);
  }

  .stage-nav {
    position: static;
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 4px;
    padding: 6px;
    overflow-x: auto;
  }

  .stage-nav button {
    width: auto;
    white-space: nowrap;
  }

  .stage-nav button[aria-selected="true"] {
    box-shadow: inset 0 -2px 0 var(--accent);
  }

  .scene-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .nav-links {
    position: absolute;
    top: var(--nav-h);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 10px var(--gutter) 18px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    box-shadow: 0 24px 40px -24px rgb(0 0 0 / 30%);
  }

  .menu-open .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 10px 12px;
    font-size: 16px;
  }

  .menu-btn {
    display: inline-grid;
  }

  .bento {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-wide {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .hero-title {
    font-size: clamp(1.82rem, 7.4vw, 2.9rem);
  }

  .hero-copy {
    margin-top: 22px;
  }

  .spec-strip dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 18px;
  }

  .spec-strip dl div:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .spec-strip dl div:nth-child(even) {
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .window-body {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
  }

  .app-panel,
  .legend-panel {
    display: none;
  }

  .chat-stream {
    mask-image: none;
  }

  .strip-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .defs {
    grid-template-columns: minmax(0, 1fr);
  }

  .defs dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .defs dd {
    padding-top: 4px;
  }

  .prose h2 {
    gap: 10px;
    padding-top: 28px;
  }

  .callout {
    padding: 14px 16px;
  }
}

@media (max-width: 640px) {
  .nav {
    gap: 16px;
  }

  .nav-actions {
    gap: 2px;
  }

  .brand {
    gap: 9px;
    font-size: 17px;
  }

  .brand-mark {
    width: 26px;
    height: 26px;
  }

  .icon-btn {
    width: 34px;
    height: 34px;
  }

  .lang-btn {
    min-width: 34px;
    padding: 0 8px;
  }

  .nav-download {
    display: none;
  }

  .bento {
    grid-template-columns: minmax(0, 1fr);
  }

  .card-wide {
    grid-column: auto;
    gap: 24px;
  }

  .card {
    padding: 22px;
    border-radius: 18px;
  }

  .card:hover {
    transform: none;
  }

  .vg-msg {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .vg-msg .pill {
    grid-column: 1 / -1;
  }

  .steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .step {
    padding: 20px;
  }

  .step h3 {
    margin-top: 12px;
  }

  .guards {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .docs-hero h1 {
    font-size: clamp(1.9rem, 8vw, 2.6rem);
  }

  .docs-jump {
    grid-template-columns: minmax(0, 1fr);
  }

  .docs-jump-title,
  .docs-jump-foot {
    grid-column: auto;
  }

  .docs-meta {
    gap: 6px;
  }

  .docs-main {
    max-width: none;
  }

  .prose {
    font-size: 0.98rem;
  }

  .window-bar {
    grid-template-columns: 1fr auto;
  }

  .window-title {
    display: none;
  }

  .tool {
    flex-wrap: wrap;
    white-space: normal;
  }

  .scene-body {
    padding: 16px;
  }

  .cta {
    padding: 26px 20px;
    border-radius: 22px;
  }

  .faq-list summary {
    gap: 16px;
    font-size: 1rem;
  }

  .site-footer {
    padding-top: 56px;
  }
}

@media (max-width: 520px) {
  .spec-strip {
    padding: 18px;
  }

  .spec-strip dl {
    grid-template-columns: minmax(0, 1fr);
    row-gap: 0;
  }

  .spec-strip dl div,
  .spec-strip dl div:nth-child(even),
  .spec-strip dl div:nth-child(odd) {
    padding: 12px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .spec-strip dl div:first-child {
    padding-top: 0;
    border-top: 0;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .hero-meta {
    row-gap: 4px;
  }

  .window-controls {
    display: none;
  }

  .window-bar {
    grid-template-columns: 1fr;
  }
}

/* 暗色：中性黑底白字。全部规则只作用于 data-theme="dark"，亮色保持原样。 */

:root[data-theme="dark"] ::selection {
  background: color-mix(in srgb, var(--ink) 22%, transparent);
}

:root[data-theme="dark"] .ui,
:root[data-theme="dark"] .pill {
  background: color-mix(in srgb, var(--ink) 10%, transparent);
}

:root[data-theme="dark"] .strip {
  border-block-color: rgb(255 255 255 / 6%);
  background: transparent;
}

:root[data-theme="dark"] .strip-list li {
  border-color: rgb(255 255 255 / 12%);
  background: transparent;
}

:root[data-theme="dark"] .hero::after,
:root[data-theme="dark"] .showcase::before,
:root[data-theme="dark"] .docs-hero::after,
:root[data-theme="dark"] .cta::before {
  display: none;
}

:root[data-theme="dark"] .section-alt {
  background: transparent;
}

:root[data-theme="dark"] .btn-primary {
  box-shadow: 0 14px 30px -18px rgb(0 0 0 / 70%);
}

:root[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 20px 38px -20px rgb(0 0 0 / 65%);
}

:root[data-theme="dark"] .brand-mark {
  filter: drop-shadow(0 5px 12px rgb(0 0 0 / 45%));
}

:root[data-theme="dark"] .card:hover {
  box-shadow: 0 30px 60px -42px rgb(0 0 0 / 65%);
}

:root[data-theme="dark"] .card-showcase .vg-editor {
  box-shadow: 0 26px 50px -38px rgb(0 0 0 / 70%);
}

:root[data-theme="dark"] .card-tint,
:root[data-theme="dark"] .card-tint-warm,
:root[data-theme="dark"] .card-tint-mint {
  border-color: rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
}

:root[data-theme="dark"] .card-spotlight {
  --paper: #0a0a0a;
  --paper-2: #101010;
  --surface: #121212;
  --surface-2: #161616;
  --ink: #f5f5f5;
  --ink-2: #bdbdbd;
  --ink-3: #8a8a8a;
  --line: #262626;
  --line-2: #3a3a3a;
  border-color: rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
}

:root[data-theme="dark"] .cta {
  border-color: rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
  color: var(--ink);
}

:root[data-theme="dark"] .cta .section-title {
  color: var(--ink);
}

:root[data-theme="dark"] .cta .btn-primary {
  background: #f5f5f5;
  color: #0a0a0a;
}

:root[data-theme="dark"] .cta .btn-primary:hover {
  background: #ffffff;
}

:root[data-theme="dark"] .cta .btn-ghost {
  color: var(--ink);
}

:root[data-theme="dark"] .cta .section-lead {
  color: var(--ink-2);
}

:root[data-theme="dark"] .cta .eyebrow,
:root[data-theme="dark"] .cta .eyebrow b {
  color: var(--accent-text);
}

:root[data-theme="dark"] .cta .eyebrow b::after {
  background: var(--line-2);
}

:root[data-theme="dark"] .tool-tag,
:root[data-theme="dark"] .avatar {
  background: color-mix(in srgb, var(--ink) 10%, transparent);
}

:root[data-theme="dark"] .d-add,
:root[data-theme="dark"] .d-del {
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}

:root[data-theme="dark"] .d-add {
  color: var(--ok);
}

:root[data-theme="dark"] .d-del {
  color: var(--bad);
}

:root[data-theme="dark"] .matrix tbody tr:hover,
:root[data-theme="dark"] .prose tbody tr:hover,
:root[data-theme="dark"] .matrix tbody tr.row-floor:hover,
:root[data-theme="dark"] .row-floor {
  background: color-mix(in srgb, var(--ink) 4%, transparent);
}

:root[data-theme="dark"] .guard {
  border-color: rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
  box-shadow: none;
}

:root[data-theme="dark"] .guard-icon,
:root[data-theme="dark"] .steps-list > li::before {
  border-color: var(--line-2);
}

:root[data-theme="dark"] .callout,
:root[data-theme="dark"] .callout-warn {
  border-color: rgb(255 255 255 / 8%);
  background: rgb(255 255 255 / 2%);
}

:root[data-theme="dark"] .callout {
  border-left-color: var(--accent);
}

:root[data-theme="dark"] .callout-warn {
  border-left-color: var(--warn);
}