/* ============================================================
   dsh-java 官网 · 清新白色设计系统 v3
   设计语言：纸感白底 / 柔和彩色 / 大留白 / DSH Java 品牌主导
   ============================================================ */

:root {
  /* 背景层级 */
  --bg: #fbfcfe;
  --bg-soft: #f4f6fb;
  --bg-card: #ffffff;
  /* 文字 */
  --text: #0f172a;
  --text-2: #475569;
  --muted: #94a3b8;
  /* 线条 */
  --line: #e6eaf2;
  --line-2: #d8dfec;
  /* 品牌色（DSH：蓝青主色 + 清新点缀） */
  --blue: #4f46e5;
  --sky: #0ea5e9;
  --cyan: #06b6d4;
  --violet: #8b5cf6;
  --green: #10b981;
  --amber: #f59e0b;
  --pink: #ec4899;
  /* 渐变 */
  --grad-brand: linear-gradient(100deg, #4f46e5 0%, #0ea5e9 55%, #06b6d4 105%);
  --grad-btn: linear-gradient(120deg, #4f46e5, #0ea5e9);
  /* 结构 */
  --radius: 20px;
  --radius-sm: 13px;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04), 0 4px 14px rgba(15, 23, 42, .05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, .06), 0 16px 42px rgba(15, 23, 42, .08);
  --shadow-lg: 0 8px 24px rgba(15, 23, 42, .07), 0 30px 70px rgba(15, 23, 42, .1);
  font-size: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

/* ---- 全局氛围：浅色柔光 ---- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 42% at 50% -8%, rgba(79, 70, 229, .06), transparent 62%),
    radial-gradient(ellipse 40% 32% at 90% 14%, rgba(6, 182, 212, .05), transparent 60%),
    radial-gradient(ellipse 44% 36% at 4% 52%, rgba(139, 92, 246, .04), transparent 60%),
    var(--bg);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.container-wide { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }

::selection { background: rgba(79, 70, 229, .18); color: var(--text); }

/* ---- 滚动渐入 ---- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .75s cubic-bezier(.22, .8, .3, 1), transform .75s cubic-bezier(.22, .8, .3, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Header · 白色毛玻璃
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(251, 252, 254, .78);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(15, 23, 42, .05);
  background: rgba(251, 252, 254, .92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 70px;
}

.brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; text-decoration: none; color: inherit; border-radius: 12px; transition: opacity .2s ease, transform .2s ease; }

.brand:hover { opacity: .82; transform: translateY(-1px); }

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 4px 12px rgba(14, 165, 233, .14);
}

.brand-mark img { width: 100%; height: 100%; object-fit: cover; }

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 1.04rem; letter-spacing: -.01em; }
.brand-text small { color: var(--muted); font-size: .68rem; letter-spacing: .04em; }

.site-nav { display: flex; gap: 4px; }

.site-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: .88rem;
  color: var(--text-2);
  font-weight: 500;
  transition: color .18s ease, background .18s ease;
}

.site-nav a:hover { color: var(--blue); background: rgba(79, 70, 229, .07); }

.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

.menu-button {
  display: none;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--text);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: .86rem;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  padding: 8px 4px 18px;
  background: rgba(251, 252, 254, .96);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--text);
  padding: 10px 22px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color .22s ease, background .22s ease, box-shadow .22s ease, transform .22s ease, color .22s ease;
}

.btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  box-shadow: 0 6px 20px rgba(79, 70, 229, .12);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--grad-btn);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, .3);
}

.btn-primary:hover {
  color: #fff;
  box-shadow: 0 12px 34px rgba(79, 70, 229, .42);
  border-color: transparent;
}

.btn-ghost { background: transparent; }

.btn-lg { padding: 15px 32px; font-size: 1rem; }

.btn-sm { padding: 8px 18px; font-size: .84rem; }

/* ============================================================
   Hero · 左文案 + 右分层架构图
   ============================================================ */
.hero {
  position: relative;
  padding: 168px 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 60px;
  align-items: center;
}

.hero-brandline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(79, 70, 229, .07);
  border: 1px solid rgba(79, 70, 229, .18);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--blue);
  font-family: var(--mono);
}

.hero-brandline .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, .16);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(16, 185, 129, .16); }
  50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, .08); }
}

.hero h1 {
  margin: 26px 0 22px;
  font-size: clamp(2.5rem, 4.9vw, 3.9rem);
  line-height: 1.12;
  letter-spacing: -.04em;
  font-weight: 800;
  color: var(--text);
}

.hero h1 .gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  max-width: 520px;
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-2);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 36px; }

.hero-stats {
  display: flex;
  margin: 46px 0 0;
  padding: 26px 0 0;
  border-top: 1px solid var(--line);
}

.hero-stats > div { flex: 1; padding-right: 18px; }
.hero-stats > div + div { padding-left: 18px; border-left: 1px solid var(--line); }

.hero-stats dt {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -.02em;
  font-family: var(--mono);
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-stats dd { margin: 3px 0 0; color: var(--muted); font-size: .78rem; }

.hero-stats .stat-unit {
  font-size: .9rem;
  margin-left: 1px;
  -webkit-text-fill-color: var(--muted);
}

/* Hero 右侧：分层架构图卡片（呼应文档教程首页） */
.hero-arch {
  position: relative;
  padding: 26px 26px 20px;
  border-radius: 24px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}

.hero-arch::before {
  content: "";
  position: absolute;
  inset: -14% -10% auto;
  height: 46%;
  background: radial-gradient(ellipse 60% 70% at 50% 0%, rgba(14, 165, 233, .1), transparent 66%);
  pointer-events: none;
  z-index: -1;
}

.hero-arch-caption {
  margin-bottom: 14px;
  text-align: center;
  color: var(--muted);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-family: var(--mono);
}

.hero-arch svg { width: 100%; height: auto; }

.hero-arch-note {
  margin-top: 12px;
  padding: 11px 16px;
  border-radius: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text-2);
  font-size: .84rem;
  text-align: center;
}

.hero-arch-note code { color: var(--blue); font-family: var(--mono); font-size: .86em; }

/* ============================================================
   Sections 通用
   ============================================================ */
.section { position: relative; padding: 108px 0; }

.section + .section { border-top: 1px solid var(--line); }

.section-soft { background: var(--bg-soft); }

.section-head { max-width: 720px; margin-bottom: 60px; }
.section-head.center { margin-inline: auto; text-align: center; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--blue);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .26em;
  text-transform: uppercase;
  font-family: var(--mono);
}

.section-tag::before,
.section-head.center .section-tag::after {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-btn);
}

.section-head h2 {
  margin: 0 0 16px;
  font-size: clamp(1.95rem, 3.6vw, 2.85rem);
  line-height: 1.16;
  letter-spacing: -.03em;
  color: var(--text);
}

.section-head p { margin: 0; color: var(--text-2); font-size: 1.01rem; }

.inline-link {
  color: var(--blue);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(79, 70, 229, .3);
  text-underline-offset: 4px;
}
.inline-link:hover { text-decoration-color: currentColor; }

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 28px;
  color: var(--blue);
  font-weight: 600;
  font-size: .93rem;
  transition: gap .2s ease;
}
.more-link:hover { gap: 11px; }
.more-link::after { content: "→"; }

/* ============================================================
   Cards / Feature grid
   ============================================================ */
.card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity .28s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, .3);
  box-shadow: var(--shadow-md);
}

.card:hover::before { opacity: 1; }

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

.feature-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border-radius: 14px;
  color: #fff;
  background: var(--grad-btn);
  box-shadow: 0 8px 18px rgba(79, 70, 229, .28);
}

.feature-icon svg { width: 22px; height: 22px; }

/* 每张卡一个清新色调 */
.feature-grid .card:nth-child(6n+2) .feature-icon { background: linear-gradient(135deg, #0ea5e9, #06b6d4); box-shadow: 0 8px 18px rgba(14, 165, 233, .26); }
.feature-grid .card:nth-child(6n+3) .feature-icon { background: linear-gradient(135deg, #8b5cf6, #a78bfa); box-shadow: 0 8px 18px rgba(139, 92, 246, .26); }
.feature-grid .card:nth-child(6n+4) .feature-icon { background: linear-gradient(135deg, #10b981, #34d399); box-shadow: 0 8px 18px rgba(16, 185, 129, .26); }
.feature-grid .card:nth-child(6n+5) .feature-icon { background: linear-gradient(135deg, #f59e0b, #fbbf24); box-shadow: 0 8px 18px rgba(245, 158, 11, .26); }
.feature-grid .card:nth-child(6n+6) .feature-icon { background: linear-gradient(135deg, #ec4899, #f472b6); box-shadow: 0 8px 18px rgba(236, 72, 153, .26); }

.card h3 { margin: 0 0 10px; font-size: 1.12rem; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--text-2); font-size: .92rem; }

/* ============================================================
   Architecture 区
   ============================================================ */
.architecture-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 44px;
  align-items: center;
}

.flow-board {
  padding: 30px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.flow-row { display: flex; align-items: center; gap: 9px; }
.flow-row + .flow-row { margin-top: 18px; }

.flow-node {
  flex: 1;
  min-width: 0;
  padding: 15px 10px;
  border-radius: 12px;
  text-align: center;
  font-weight: 700;
  font-size: .88rem;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--line-2);
}

.flow-node small { display: block; margin-top: 4px; color: var(--muted); font-weight: 400; font-size: .68rem; }
.flow-node.input-node { border-color: rgba(6, 182, 212, .5); background: rgba(6, 182, 212, .07); }
.flow-node.domain-node { border-color: rgba(139, 92, 246, .5); background: rgba(139, 92, 246, .07); }
.flow-node.output-node { border-color: rgba(79, 70, 229, .5); background: rgba(79, 70, 229, .07); }

.flow-arrow {
  position: relative;
  width: 17px;
  height: 2px;
  background: linear-gradient(90deg, rgba(14, 165, 233, .2), rgba(14, 165, 233, .7));
  flex: 0 0 auto;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-top: 2px solid rgba(14, 165, 233, .7);
  border-right: 2px solid rgba(14, 165, 233, .7);
  transform: translateY(-50%) rotate(45deg);
}

.mechanism-list { display: grid; gap: 13px; }

.mechanism-list article {
  display: flex;
  gap: 18px;
  padding: 20px 22px;
  border-radius: 15px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: border-color .22s ease, box-shadow .22s ease;
}

.mechanism-list article:hover { border-color: rgba(79, 70, 229, .3); box-shadow: var(--shadow-md); }

.mechanism-list article > span {
  color: var(--blue);
  font-family: var(--mono);
  font-weight: 800;
  font-size: .9rem;
}

.mechanism-list h3 { margin: 0 0 6px; font-size: 1.02rem; }
.mechanism-list p { margin: 0; color: var(--text-2); font-size: .9rem; }

/* ============================================================
   Screenshots
   ============================================================ */
.screen-showcase { display: grid; gap: 20px; }

.screen-main {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-lg);
}

.screen-main img { width: 100%; aspect-ratio: 16 / 8.6; object-fit: cover; object-position: top; }

.screen-thumbs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.browser-frame {
  margin: 0;
  overflow: hidden;
  border-radius: 15px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.browser-frame:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, .3);
  box-shadow: var(--shadow-md);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}

.browser-bar span { width: 8px; height: 8px; border-radius: 50%; background: #cbd5e1; }
.browser-bar span:nth-child(1) { background: #ff5f57; }
.browser-bar span:nth-child(2) { background: #febc2e; }
.browser-bar span:nth-child(3) { background: #28c840; }

.browser-bar em {
  margin-left: 8px;
  padding: 2px 11px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid var(--line);
  font-style: normal;
  color: var(--muted);
  font-size: .68rem;
  font-family: var(--mono);
}

.browser-frame img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; }

.browser-frame figcaption {
  padding: 12px 16px;
  color: var(--text-2);
  font-size: .85rem;
  border-top: 1px solid var(--line);
}

/* ============================================================
   Cases
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.case-card { display: flex; flex-direction: column; }

.case-badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 5px 13px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: rgba(14, 165, 233, .09);
  border: 1px solid rgba(14, 165, 233, .3);
  color: var(--sky);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  font-family: var(--mono);
}

.case-card ul { margin: 16px 0 24px; padding-left: 18px; color: var(--text-2); font-size: .9rem; }
.case-card li + li { margin-top: 6px; }
.case-card li::marker { color: var(--sky); }
.case-link { margin-top: auto; color: var(--blue); font-weight: 700; font-size: .9rem; }
.case-link:hover { text-decoration: underline; text-underline-offset: 4px; }

/* ============================================================
   Book
   ============================================================ */
.book-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 48px;
  align-items: start;
}

.book-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 13px;
  margin-bottom: 30px;
}

.book-stat {
  padding: 18px 12px;
  border-radius: 15px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.book-stat strong {
  display: block;
  font-size: 1.6rem;
  letter-spacing: -.02em;
  font-family: var(--mono);
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.book-stat span { color: var(--muted); font-size: .74rem; }

.book-points { margin: 0 0 30px; padding: 0; list-style: none; display: grid; gap: 12px; }

.book-points li {
  position: relative;
  padding-left: 28px;
  color: var(--text-2);
  font-size: .95rem;
}

.book-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(14, 165, 233, .1);
  border: 1px solid rgba(14, 165, 233, .5);
}

.book-points li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 3px;
  border-left: 1.6px solid var(--sky);
  border-bottom: 1.6px solid var(--sky);
  transform: rotate(-45deg);
}

.book-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.book-panel {
  padding: 26px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.book-panel-head {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-family: var(--mono);
}

.book-chapter {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 11px 12px;
  border-radius: 11px;
  color: var(--text);
  font-size: .9rem;
  transition: background .18s ease;
}

.book-chapter:hover { background: rgba(79, 70, 229, .06); }

.book-chapter span {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: rgba(79, 70, 229, .09);
  border: 1px solid rgba(79, 70, 229, .22);
  color: var(--blue);
  font-size: .74rem;
  font-weight: 700;
  font-family: var(--mono);
}

.book-chapter.more {
  margin-top: 6px;
  border-top: 1px dashed var(--line-2);
  border-radius: 0 0 11px 11px;
  color: var(--blue);
  font-weight: 600;
}

/* ============================================================
   Docs Entry（轻量文档入口条）
   ============================================================ */
.docs-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  padding: 44px 48px;
  border-radius: 24px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.docs-entry-copy .section-tag { margin-bottom: 12px; }
.docs-entry-copy h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 2.6vw, 2rem); letter-spacing: -.02em; }
.docs-entry-copy p { margin: 0; max-width: 520px; color: var(--text-2); font-size: .95rem; }
.docs-entry-actions { display: flex; flex-wrap: wrap; gap: 12px; flex: 0 0 auto; }

/* ============================================================
   Plugins
   ============================================================ */
.plugin-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 15px;
  margin-bottom: 52px;
}

.plugin-step {
  padding: 26px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.plugin-step:hover {
  border-color: rgba(79, 70, 229, .3);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.step-track { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }

.step-no {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 10px;
  background: var(--grad-btn);
  color: #fff;
  font-size: .82rem;
  font-weight: 700;
  box-shadow: 0 6px 14px rgba(79, 70, 229, .3);
}

.step-line { flex: 1; height: 2px; border-radius: 2px; background: linear-gradient(90deg, rgba(14, 165, 233, .4), var(--line)); }
.step-line.is-last { background: var(--line); }

.plugin-step h3 { margin: 0 0 8px; font-size: 1.04rem; }
.plugin-step p { margin: 0; color: var(--text-2); font-size: .88rem; }

.plugin-step code {
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .86em;
}

.plugin-topic-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding: 52px;
  border-radius: 26px;
  background: linear-gradient(135deg, #eef2ff, #f0f9ff);
  border: 1px solid rgba(79, 70, 229, .18);
  box-shadow: var(--shadow-md);
}

.plugin-topic-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 90% 6%, rgba(14, 165, 233, .14), transparent 38%),
    radial-gradient(circle at 2% 98%, rgba(139, 92, 246, .12), transparent 40%);
  pointer-events: none;
}

.plugin-topic-panel > * { position: relative; }

.plugin-topic-panel h3 { margin: 0 0 12px; font-size: 1.5rem; letter-spacing: -.02em; }
.plugin-topic-panel p { margin: 0 0 20px; color: var(--text-2); font-size: .95rem; }
.plugin-topic-panel p code { color: var(--blue); }

.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 17px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, .4);
  color: var(--sky);
  font-family: var(--mono);
  font-size: .9rem;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(14, 165, 233, .14);
}

.plugin-topic-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

/* ============================================================
   Terminal（白底区中的深色点缀窗口）
   ============================================================ */
.terminal {
  overflow: hidden;
  border-radius: 15px;
  background: #0f172a;
  border: 1px solid #1e293b;
  box-shadow: 0 20px 50px rgba(15, 23, 42, .22);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .05);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.terminal-bar span { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.terminal-bar span:nth-child(2) { background: #febc2e; }
.terminal-bar span:nth-child(3) { background: #28c840; }
.terminal-bar em { margin-left: auto; font-style: normal; color: #64748b; font-size: .72rem; font-family: var(--mono); }

.terminal pre {
  margin: 0;
  padding: 22px 24px;
  overflow-x: auto;
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: .8rem;
  line-height: 1.8;
}

.terminal pre .cmt { color: #64748b; }
.terminal pre .cmd { color: #7dd3fc; }
.terminal pre .accent { color: #a78bfa; }

/* ============================================================
   Quickstart（一键使用 / 插件安装）
   ============================================================ */
.quickstart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.quick-card { display: flex; flex-direction: column; }

.quick-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.quick-card-head h3 {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0;
  font-size: 1.04rem;
}

.quick-card-head h3 .step-no { width: 28px; height: 28px; border-radius: 9px; font-size: .8rem; }

.copy-btn {
  flex: 0 0 auto;
  padding: 6px 15px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--bg-soft);
  color: var(--text-2);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}

.copy-btn:hover {
  color: var(--blue);
  border-color: rgba(79, 70, 229, .45);
  box-shadow: 0 4px 14px rgba(79, 70, 229, .12);
}

.quick-card > p { margin: 0 0 12px; color: var(--text-2); font-size: .9rem; }

.quick-card > p code,
.quick-tip code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .86em;
}

.codebox {
  position: relative;
  border-radius: 13px;
  background: #0f172a;
  border: 1px solid #1e293b;
  box-shadow: 0 12px 30px rgba(15, 23, 42, .16);
}

.codebox pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: .78rem;
  line-height: 1.75;
}

.quick-tip {
  margin: 14px 0 0;
  font-size: .84rem;
  color: var(--muted);
}

.quickstart-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 36px;
}

/* ---- Deploy Tabs（Quickstart / Deploy 合并的标签切换） ---- */
.deploy-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  width: fit-content;
  margin: 0 auto 34px;
  padding: 5px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.deploy-tab {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font-size: .9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.deploy-tab .step-no {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  font-size: .74rem;
  box-shadow: none;
  background: var(--bg-soft);
  border: 1px solid var(--line-2);
  color: var(--muted);
  transition: all .2s ease;
}

.deploy-tab:hover { color: var(--blue); }

.deploy-tab.active {
  background: var(--grad-btn);
  color: #fff;
  box-shadow: 0 8px 20px rgba(79, 70, 229, .3);
}

.deploy-tab.active .step-no {
  background: rgba(255, 255, 255, .2);
  border-color: rgba(255, 255, 255, .35);
  color: #fff;
}

.deploy-tab-panel { animation: tabFade .35s ease; }
.deploy-tab-panel[hidden] { display: none; }

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

@media (prefers-reduced-motion: reduce) {
  .deploy-tab-panel { animation: none; }
}

/* 单卡面板：收窄并居中，视觉更聚焦 */
.quickstart-grid.is-single {
  grid-template-columns: minmax(0, 680px);
  justify-content: center;
}

@media (max-width: 740px) {
  .deploy-tabs { width: 100%; }
  .deploy-tab { flex: 1 1 auto; justify-content: center; }
  .quickstart-grid.is-single { grid-template-columns: 1fr; }
}

/* ---- 插件视频（Bilibili 嵌入） ---- */
.plugin-video {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 44px;
  align-items: center;
  margin-top: 52px;
  padding: 44px 48px;
  border-radius: 26px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.plugin-video-copy .section-tag { margin-bottom: 14px; }
.plugin-video-copy h3 { margin: 0 0 12px; font-size: 1.4rem; letter-spacing: -.02em; }
.plugin-video-copy p { margin: 0; color: var(--text-2); font-size: .95rem; }
.plugin-video-copy .more-link { margin-top: 22px; }

.plugin-video-frame {
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-sm);
  background: #0f172a;
}

.plugin-video-frame iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 0;
}

@media (max-width: 1024px) {
  .plugin-video { grid-template-columns: 1fr; gap: 28px; padding: 34px 28px; }
}

/* ============================================================
   Deploy 详情页（deploy.html）
   ============================================================ */
.step-block { display: grid; gap: 14px; }

.step-item {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  border-radius: 15px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: border-color .22s ease, box-shadow .22s ease;
}

.step-item:hover { border-color: rgba(79, 70, 229, .3); box-shadow: var(--shadow-md); }

.step-item > .step-no { flex: 0 0 auto; margin-top: 2px; }

.step-item h3 { margin: 0 0 6px; font-size: 1.02rem; }
.step-item p { margin: 0; color: var(--text-2); font-size: .9rem; }
.step-item .codebox { margin-top: 12px; }

.env-table { width: 100%; border-collapse: collapse; font-size: .88rem; }

.env-table th, .env-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
}

.env-table th { color: var(--text); font-weight: 700; background: var(--bg-soft); }
.env-table tr:first-child th:first-child { border-top-left-radius: 12px; }
.env-table tr:first-child th:last-child { border-top-right-radius: 12px; }

.env-table td code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .85em;
}

.callout-note {
  padding: 18px 22px;
  border-radius: 14px;
  background: rgba(245, 158, 11, .07);
  border: 1px solid rgba(245, 158, 11, .3);
  border-left: 3px solid var(--amber);
  color: var(--text-2);
  font-size: .9rem;
}

.callout-note strong { color: var(--text); }

.callout-note code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .86em;
}

.callout-info {
  padding: 18px 22px;
  border-radius: 14px;
  background: rgba(14, 165, 233, .06);
  border: 1px solid rgba(14, 165, 233, .3);
  border-left: 3px solid var(--sky);
  color: var(--text-2);
  font-size: .9rem;
}

.callout-info strong { color: var(--text); }
.callout-info code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .86em;
}

.faq-item {
  padding: 20px 24px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.faq-item + .faq-item { margin-top: 12px; }

.faq-item h3 { margin: 0 0 8px; font-size: .98rem; }
.faq-item p { margin: 0; color: var(--text-2); font-size: .88rem; }
.faq-item code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .85em;
}

/* ============================================================
   Deploy
   ============================================================ */
.deploy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.deploy-card h3 {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 18px;
  font-size: 1.04rem;
}

.deploy-card h3 .step-no { width: 28px; height: 28px; border-radius: 9px; font-size: .8rem; }

.deploy-card pre {
  margin: 0;
  padding: 18px;
  border-radius: 12px;
  overflow-x: auto;
  background: #0f172a;
  border: 1px solid #1e293b;
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: .76rem;
  line-height: 1.75;
}

.deploy-card p { margin: 14px 0 0; color: var(--text-2); font-size: .86rem; }

/* ============================================================
   CTA / Community
   ============================================================ */
.cta-panel {
  position: relative;
  overflow: hidden;
  padding: 72px 48px;
  border-radius: 28px;
  text-align: center;
  background:
    radial-gradient(ellipse 58% 76% at 50% -18%, rgba(79, 70, 229, .1), transparent 62%),
    linear-gradient(180deg, #ffffff, #f6f8fd);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-lg);
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 70, 229, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 70, 229, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 20%, #000 20%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 20%, #000 20%, transparent 76%);
  pointer-events: none;
}

.cta-panel > * { position: relative; }

.cta-panel h2 {
  margin: 0 0 16px;
  font-size: clamp(1.9rem, 3.6vw, 2.85rem);
  letter-spacing: -.03em;
  line-height: 1.16;
}

.cta-panel p { max-width: 560px; margin: 0 auto 34px; color: var(--text-2); }

.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 13px; }

.cta-sources {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.cta-sources a {
  color: var(--muted);
  font-size: .84rem;
  font-family: var(--mono);
  transition: color .18s ease;
}

.cta-sources a:hover { color: var(--blue); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  padding: 72px 0 32px;
  background: #fff;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-brand { margin-bottom: 14px; }
.footer-grid p { margin: 0; max-width: 340px; color: var(--muted); font-size: .9rem; }
.footer-grid h4 { margin: 0 0 15px; font-size: .86rem; }
.footer-grid nav a { display: block; margin-bottom: 9px; color: var(--muted); font-size: .86rem; transition: color .18s ease; }
.footer-grid nav a:hover { color: var(--blue); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 24px;
}

.footer-bottom p { margin: 0; color: var(--muted); font-size: .78rem; }

.footer-bottom a, .footer-record a { color: inherit; transition: color .18s ease, background-color .18s ease, border-color .18s ease; }
.footer-bottom a:hover, .footer-record a:hover { color: var(--blue); }

.footer-record {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 0;
  margin-top: 18px;
  padding: 15px 0 0;
  border-top: 1px solid var(--line);
  color: #8995aa;
  font-size: .72rem;
  line-height: 1.6;
  letter-spacing: .01em;
  text-align: center;
}

.footer-record > a {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 8px;
  border: 1px solid transparent;
  border-radius: 6px;
}

.footer-record > a:hover {
  color: #dbe7ff;
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .1);
}

.footer-record > span {
  padding: 0 4px;
  color: #56647d;
  user-select: none;
}

.footer-record > span:last-child {
  color: #76839a;
}

/* ============================================================
   详情页（runtime / architecture）专用
   ============================================================ */
.sub-hero {
  padding: 162px 0 64px;
  text-align: center;
}

.sub-hero .hero-lede { max-width: 620px; margin-inline: auto; }

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: .82rem;
  font-family: var(--mono);
}

.breadcrumb a { color: var(--text-2); transition: color .18s ease; }
.breadcrumb a:hover { color: var(--blue); }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.detail-card .spec-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.detail-card .spec-list li {
  display: flex;
  gap: 10px;
  color: var(--text-2);
  font-size: .88rem;
}

.detail-card .spec-list li::before {
  content: "▸";
  color: var(--sky);
  flex: 0 0 auto;
}

.spec-list code {
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(79, 70, 229, .08);
  color: var(--blue);
  font-family: var(--mono);
  font-size: .85em;
}

.pipeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}

.pipeline-stage {
  flex: 1;
  min-width: 130px;
  padding: 20px 16px;
  border-radius: 13px;
  text-align: center;
  background: var(--bg-soft);
  border: 1px solid var(--line-2);
}

.pipeline-stage strong { display: block; font-size: .94rem; }
.pipeline-stage small { display: block; margin-top: 5px; color: var(--muted); font-size: .72rem; line-height: 1.55; }

.pipeline-arrow {
  align-self: center;
  flex: 0 0 26px;
  height: 2px;
  margin: 0 4px;
  background: linear-gradient(90deg, rgba(14, 165, 233, .2), rgba(14, 165, 233, .65));
  position: relative;
}

.pipeline-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-top: 2px solid rgba(14, 165, 233, .65);
  border-right: 2px solid rgba(14, 165, 233, .65);
  transform: translateY(-50%) rotate(45deg);
}

.layer-stack { display: grid; gap: 10px; }

.layer-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.layer-row:hover { border-color: rgba(79, 70, 229, .3); box-shadow: var(--shadow-md); }

.layer-row .layer-tag {
  flex: 0 0 118px;
  font-family: var(--mono);
  font-weight: 800;
  font-size: .82rem;
  color: var(--blue);
}

.layer-row p { margin: 0; color: var(--text-2); font-size: .9rem; }

.toc-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.toc-nav a {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--text-2);
  font-size: .84rem;
  font-weight: 500;
  transition: all .2s ease;
}

.toc-nav a:hover { color: var(--blue); border-color: rgba(79, 70, 229, .45); box-shadow: 0 4px 14px rgba(79, 70, 229, .1); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .site-nav { display: none; }
  .menu-button { display: inline-flex; }
  .mobile-nav.active { display: grid; gap: 4px; }
  .mobile-nav a { padding: 11px 6px; color: var(--text-2); font-weight: 600; border-bottom: 1px solid var(--line); }
  .mobile-nav a:last-child { border-bottom: 0; }
  .hero-grid, .architecture-grid, .plugin-topic-panel, .docs-entry { grid-template-columns: 1fr; }
  .docs-entry { flex-direction: column; align-items: flex-start; padding: 36px 32px; }
  .hero { padding-top: 136px; }
  .hero-lede { max-width: 620px; }
  .feature-grid, .deploy-grid { grid-template-columns: repeat(2, 1fr); }
  .plugin-flow { grid-template-columns: repeat(2, 1fr); }
  .plugin-topic-panel { gap: 30px; }
  .quickstart-grid { grid-template-columns: 1fr; }
}

@media (max-width: 740px) {
  .header-actions .btn { display: none; }
  .hero { padding: 122px 0 72px; }
  .hero h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .hero-stats { flex-wrap: wrap; gap: 20px 0; }
  .hero-stats > div { flex: 0 0 50%; padding: 0 10px 0 0; }
  .hero-stats > div:nth-child(2n) { padding-left: 16px; }
  .hero-stats > div:nth-child(3) { border-left: none; padding-left: 0; }
  .feature-grid, .case-grid, .deploy-grid, .plugin-flow, .detail-grid, .screen-thumbs { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
  .section-head { margin-bottom: 40px; }
  .flow-board { padding: 16px; }
  .flow-row { flex-direction: column; align-items: stretch; }
  .flow-arrow { display: none; }
  .flow-row + .flow-row { margin-top: 12px; }
  .plugin-topic-panel, .cta-panel { padding: 34px 24px; }
  .step-line, .pipeline-arrow { display: none; }
  .pipeline { flex-direction: column; gap: 10px; }
  .layer-row { flex-direction: column; align-items: flex-start; gap: 6px; }
  .layer-row .layer-tag { flex: none; }
  .footer-grid, .footer-bottom { grid-template-columns: 1fr; flex-direction: column; }
  .footer-record { margin-top: 16px; padding-inline: 8px; font-size: .7rem; }
  .sub-hero { padding: 132px 0 48px; }
}