/*
 * 宣传页样式：配色对齐控制台默认青绿方案，品牌青柠只做点缀。
 * 深浅模式由 theme.js 在首屏前把 data-theme 写到 <html> 上，CSS 只认这个属性。
 */
:root {
  --bg: #f6faf9;
  --bg-alt: #edf4f2;
  --card: #ffffff;
  --fg: #0e2321;
  --muted: #55706b;
  --border: #dae6e2;
  --primary: #086c6a;
  --primary-fg: #ffffff;
  --accent: #e2f0ee;
  --brand: #dcef9b;
  --info: #0d6fa8;
  --success: #157f3d;
  --warning: #a2580a;
  --danger: #b42318;
  /* 首屏产品图：深青底 + 浅色内容，和浅色页面拉开层次 */
  --shot: #0a312d;
  --shot-2: #062521;
  --shot-fg: #eaf5f1;
  --shot-muted: #9dc0b6;
  --ring: rgb(8 108 106 / 40%);
  --shadow-1: 0 1px 2px rgb(14 35 33 / 6%);
  --shadow-2: 0 20px 44px -24px rgb(14 35 33 / 38%);
  --radius: 14px;
  --radius-lg: 20px;
}

:root[data-theme='dark'] {
  --bg: #0b1f1c;
  --bg-alt: #0e2825;
  --card: #123430;
  --fg: #e6f1ec;
  --muted: #a6c3ba;
  --border: #26524a;
  --primary: #8cd6c5;
  --primary-fg: #08201d;
  --accent: #17403a;
  --info: #7dd3fc;
  --success: #6ee7a8;
  --warning: #f3c07b;
  --danger: #fca5a5;
  --shot: #0d2b27;
  --shot-2: #0a231f;
  --ring: rgb(140 214 197 / 45%);
  --shadow-2: 0 20px 44px -24px rgb(0 0 0 / 65%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    'PingFang SC',
    'Microsoft YaHei',
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

::selection {
  background: var(--primary);
  color: var(--primary-fg);
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
  border-radius: 8px;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

/* 键盘用户第一个 Tab 就能跳过导航 */
.skip {
  position: absolute;
  left: -9999px;
  top: 12px;
}

.skip:focus {
  left: 20px;
  z-index: 30;
  padding: 8px 14px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--primary-fg);
}

/* ---------- 顶栏 ---------- */

header.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}

.nav-brand,
.nav-brand:hover,
.hero-logo,
.hero-logo:hover {
  text-decoration: none;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
}

.nav-brand img {
  width: 26px;
  height: 26px;
}

/* 深浅模式各用一份品牌资源（*-dark 都是透明底） */
.nav-brand img.dark {
  display: none;
}

:root[data-theme='dark'] .nav-brand img.light {
  display: none;
}

:root[data-theme='dark'] .nav-brand img.dark {
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
  font-size: 14px;
}

.nav-links a {
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--fg);
  text-decoration: none;
}

.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding-left: 6px;
  border-left: 1px solid var(--border);
}

/* 顶栏图标按钮：与登录页一致——无边框幽灵按钮，只放图标，名称走 aria-label / title */
.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.nav-icon:hover {
  color: var(--primary);
  background: var(--accent);
  text-decoration: none;
}

.nav-icon svg {
  width: 16px;
  height: 16px;
}

.nav-icon .icon-moon {
  display: none;
}

:root[data-theme='dark'] .nav-icon .icon-sun {
  display: none;
}

:root[data-theme='dark'] .nav-icon .icon-moon {
  display: block;
}

/* ---------- 首屏 ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  align-items: center;
  gap: 56px;
  /* 底部多留一点：产品图右下角挂着两个说明标签 */
  padding: 76px 0 96px;
}

.kicker {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 首屏字标可点：进 Runlume 官网，不带下划线，悬停只轻微减淡 */
.hero-logo {
  display: inline-block;
}

.hero-logo:hover {
  opacity: 0.85;
}

.hero-wordmark {
  display: block;
  width: 168px;
  margin-bottom: 10px;
  /* 字标内的图形用这两个变量上色（与控制台、文档站同一份 SVG），深浅模式各给一组 */
  --foreground: #11312f;
  --brand: #086c6a;
}

.hero-wordmark svg {
  display: block;
  width: 100%;
  height: auto;
}

:root[data-theme='dark'] .hero-wordmark {
  --foreground: #e4f0eb;
  --brand: #8cd6c5;
}

/* 与控制台、文档站同一套关键帧：默认 3.6s 呼吸，鼠标悬停转心跳。 */
@keyframes brand-dot-pulse {
  0%,
  32%,
  100% {
    fill: #086c6a;
    filter: drop-shadow(0 0 0 transparent);
  }
  12% {
    fill: color-mix(in srgb, #086c6a 25%, #67ffe0);
    filter: drop-shadow(0 0 3px #23ddb899) drop-shadow(0 0 5px #23ddb833);
  }
}

@keyframes brand-dot-heartbeat {
  0%,
  100% {
    fill: #086c6a;
    filter: drop-shadow(0 0 0 transparent) drop-shadow(0 0 0 transparent);
  }
  50% {
    fill: #67ffe0;
    filter: drop-shadow(0 0 4px #23ddb8) drop-shadow(0 0 8px #23ddb880);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-wordmark .wordmark-dot {
    animation: brand-dot-pulse 3600ms ease-in-out infinite;
  }
}

@media (prefers-reduced-motion: no-preference) and (hover: hover) and (pointer: fine) {
  .hero-logo:hover .wordmark-dot {
    animation: brand-dot-heartbeat 1100ms ease-in-out infinite;
  }
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 20px 0 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--fg);
  font-size: 15px;
  font-weight: 500;
  box-shadow: var(--shadow-1);
}

.btn:hover {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  text-decoration: none;
}

.btn.primary {
  border-color: transparent;
  background: var(--primary);
  color: var(--primary-fg);
}

.btn.primary:hover {
  background: color-mix(in srgb, var(--primary) 88%, #000);
}

.btn svg {
  width: 17px;
  height: 17px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 22px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  list-style: none;
}

.meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.meta li + li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
}

/* 首屏产品图：一张深色应用窗口，内容用真实设计系统的语义色 */

.shot {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
  background: linear-gradient(160deg, var(--shot), var(--shot-2));
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
}

.shot-bar .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgb(255 255 255 / 18%);
}

.shot-bar span.title {
  margin-left: 6px;
  color: var(--shot-muted);
  font-size: 12px;
}

.shot-body {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 0;
}

.shot-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 10px;
  border-right: 1px solid rgb(255 255 255 / 8%);
}

.shot-nav span {
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--shot-muted);
  font-size: 12px;
}

.shot-nav span.on {
  background: rgb(255 255 255 / 10%);
  color: var(--shot-fg);
}

.shot-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  min-width: 0;
}

.shot-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.shot-stat {
  padding: 10px 12px;
  border: 1px solid rgb(255 255 255 / 10%);
  border-radius: 10px;
  background: rgb(255 255 255 / 4%);
}

.shot-stat span {
  display: block;
  color: var(--shot-muted);
  font-size: 11px;
}

.shot-stat b {
  display: block;
  margin-top: 4px;
  color: var(--shot-fg);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.shot-chart {
  padding: 10px 12px 4px;
  border: 1px solid rgb(255 255 255 / 10%);
  border-radius: 10px;
  background: rgb(255 255 255 / 4%);
}

.shot-chart svg {
  display: block;
  width: 100%;
  height: 66px;
}

.shot-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
}

.pill.ok {
  background: rgb(110 231 168 / 16%);
  color: #7fe3b0;
}

.pill.warn {
  background: rgb(243 192 123 / 16%);
  color: #f3c07b;
}

.pill.err {
  background: rgb(252 165 165 / 16%);
  color: #fca5a5;
}

.pill.info {
  background: rgb(125 211 252 / 16%);
  color: #7dd3fc;
}

.shot-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.shot-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border: 1px solid rgb(255 255 255 / 8%);
  border-radius: 10px;
  color: var(--shot-fg);
  font-size: 12px;
}

.shot-row em {
  color: var(--shot-muted);
  font-size: 11px;
  font-style: normal;
}

/* ---------- 通用小节 ---------- */

.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 62ch;
  margin-bottom: 32px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.section-head .lead {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- 特性 ---------- */

.feature-grid {
  display: grid;
  /* 九张卡正好三行三列，不留半行空位 */
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-1);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.feature:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 34%, var(--border));
  box-shadow: var(--shadow-2);
}

.feature .icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  border-radius: 11px;
  background: var(--accent);
  color: var(--primary);
}

.feature .icon svg {
  width: 20px;
  height: 20px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 组件一览 ---------- */

.cat-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 12px;
}

.cat {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--fg);
  box-shadow: var(--shadow-1);
}

.cat:hover {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  text-decoration: none;
}

.cat-text {
  min-width: 0;
}

.cat strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
}

.cat small {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.cat-arrow {
  width: 18px;
  height: 18px;
  margin-left: auto;
  color: var(--muted);
  transition: transform 160ms ease;
}

.cat:hover .cat-arrow {
  color: var(--primary);
  transform: translateX(3px);
}

/* ---------- 快速开始 ---------- */

.start-grid {
  display: grid;
  /* 步骤文字比终端更宽，给右侧多一点空间，避免第 4 步被折行 */
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 28px;
  align-items: start;
}

.terminal {
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
  background: linear-gradient(160deg, var(--shot), var(--shot-2));
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
}

.terminal-bar .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgb(255 255 255 / 18%);
}

.terminal-bar span.title {
  margin-left: 6px;
  color: var(--shot-muted);
  font-size: 12px;
}

.terminal pre {
  margin: 0;
  padding: 18px;
  color: var(--shot-fg);
  font-size: 13px;
  line-height: 1.9;
  overflow-x: auto;
}

.terminal pre b {
  color: var(--brand);
  font-weight: 600;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 0 0 18px 42px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.7;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.steps li:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 12.5px;
  top: 30px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}

.steps b {
  color: var(--fg);
  font-weight: 600;
}

.steps code,
.cat small code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--bg-alt);
  color: var(--fg);
  font-size: 13px;
}

/* ---------- 页脚 ---------- */

footer {
  border-top: 1px solid var(--border);
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

footer a {
  color: var(--muted);
}

footer a:hover {
  color: var(--fg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
}

.footer-inner .spacer {
  margin-left: auto;
}

footer a {
  color: var(--muted);
}

footer a:hover {
  color: var(--fg);
}

/* ---------- 窄屏 ---------- */

@media (max-width: 1000px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding: 56px 0 64px;
  }

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

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

@media (max-width: 760px) {
  .nav-links {
    gap: 14px;
  }

  /* 窄屏只留两个关键入口，其余靠页面内小节与页脚 */
  .nav-links a:nth-child(-n + 3) {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  .feature,
  .cat {
    padding: 18px;
  }

  .shot-body {
    grid-template-columns: 108px minmax(0, 1fr);
  }

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

@media (max-width: 520px) {
  .nav-links a:nth-last-child(-n + 2) {
    display: none;
  }

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

  .shot-nav {
    display: none;
  }

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

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

  .feature,
  .cat-arrow {
    transition: none;
  }

  .feature:hover {
    transform: none;
  }
}
