/* ============================================================
   CoolQBot 功能图鉴 · 设计系统
   纸面图鉴风：奶油纸底 + 墨色描边 + 衬线标题 + 等宽命令
   ============================================================ */

:root {
  --paper: #f6f1e7;
  --paper-2: #ede5d3;
  --card: #fffdf6;
  --ink: #23201a;
  --ink-2: #6c6353;
  --ink-3: #9a8f7a;
  --line: #23201a;
  --coral: #ff4f2e;
  --coral-text: #bd3019;
  --coral-soft: #ffe3db;
  --indigo: #3d55f0;
  --indigo-soft: #e2e7ff;
  --mint: #0e8a5f;
  --mint-text: #08734d;
  --mint-soft: #dcf2e8;
  --sun: #f0a500;
  --sun-text: #8a6100;
  --sun-soft: #fdf0d0;
  --violet: #7a3ff0;
  --violet-text: #6423d2;
  --violet-soft: #ece1ff;
  --dark: #1b1813;
  --dark-2: #26221a;
  --lime: #e6f45c;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "JetBrains Mono",
    "Courier New", monospace;
  --radius: 14px;
  --shadow-hard: 5px 5px 0 var(--ink);
  --shadow-hard-sm: 3px 3px 0 var(--ink);
  --header-h: 68px;
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0.01em;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:where(a, button, input):focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 3px;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--paper-2);
  border: 1px solid rgba(35, 32, 26, 0.16);
  border-radius: 6px;
  padding: 0.1em 0.42em;
  white-space: nowrap;
  overflow-wrap: break-word;
}

svg {
  width: 1.25em;
  height: 1.25em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.22em;
}

.svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

section {
  scroll-margin-top: calc(var(--header-h) + 8px);
}

.fx-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 200;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 18px;
  border-radius: 8px;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 12px;
}

::selection {
  background: var(--coral);
  color: #fff;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(246, 241, 231, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.nav-shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--ink);
  color: var(--lime);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 10px;
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.2s;
}
.brand:hover .brand-mark {
  transform: rotate(-6deg);
}
.brand-name {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-name em {
  font-style: normal;
  font-family: var(--serif);
  font-size: 0.72rem;
  color: var(--ink-2);
  border: 1px solid var(--ink-3);
  border-radius: 99px;
  padding: 1px 8px;
  margin-left: 8px;
  vertical-align: 2px;
}

.site-navigation {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.95rem;
}
.site-navigation a {
  position: relative;
  padding: 4px 0;
  color: var(--ink-2);
  transition: color 0.2s;
}
.site-navigation a:hover {
  color: var(--ink);
}
.site-navigation a:not(.nav-github)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2.5px;
  background: var(--coral);
  transition: right 0.25s;
}
.site-navigation a:not(.nav-github):hover::after {
  right: 0;
}
.site-navigation .nav-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink);
  color: var(--paper) !important;
  padding: 8px 16px;
  border-radius: 99px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-github:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-sm);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}
.menu-toggle span {
  width: 22px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 1.5px solid var(--ink);
  transition: transform 0.18s, box-shadow 0.18s, background 0.18s;
}
.btn-primary {
  background: var(--coral);
  color: #fff;
  box-shadow: var(--shadow-hard);
}
.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}
.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}
.btn-ghost {
  background: var(--card);
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-sm);
}
.btn-dark {
  background: var(--ink);
  color: var(--lime);
  border-color: var(--ink);
  box-shadow: 5px 5px 0 rgba(35, 32, 26, 0.25);
}
.btn-dark:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(35, 32, 26, 0.25);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 0;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 340px at 85% 12%, rgba(255, 79, 46, 0.12), transparent 65%),
    radial-gradient(500px 300px at 10% 80%, rgba(61, 85, 240, 0.09), transparent 65%),
    linear-gradient(rgba(35, 32, 26, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 32, 26, 0.05) 1px, transparent 1px);
  background-size: auto, auto, 44px 44px, 44px 44px;
  pointer-events: none;
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  padding-bottom: 88px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px dashed var(--ink-3);
  border-radius: 99px;
  padding: 6px 14px;
  margin-bottom: 26px;
  background: var(--card);
}
.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(14, 138, 95, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(14, 138, 95, 0); }
}

.hero-copy h1 {
  font-size: clamp(2.6rem, 5.6vw, 4.4rem);
  margin-bottom: 24px;
}
.hero-copy h1 mark {
  background: linear-gradient(transparent 55%, var(--lime) 55%, var(--lime) 92%, transparent 92%);
  color: inherit;
  padding: 0 4px;
  white-space: nowrap;
}

.hero-lead {
  font-size: 1.12rem;
  color: var(--ink-2);
  max-width: 34em;
  margin-bottom: 34px;
}
.hero-lead strong {
  color: var(--coral-text);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 42px;
}

.hero-facts {
  display: flex;
  gap: 40px;
  list-style: none;
}
.hero-facts li {
  display: flex;
  flex-direction: column;
}
.hero-facts strong {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 900;
}
.hero-facts span {
  font-size: 0.85rem;
  color: var(--ink-2);
}

/* --- 聊天演示 --- */
.chat-stage {
  position: relative;
}
.chat-window {
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  box-shadow: 8px 8px 0 var(--ink);
  overflow: hidden;
  transform: rotate(1deg);
}
.chat-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1.5px solid var(--ink);
  background: var(--paper-2);
}
.bot-avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--coral);
  color: #fff;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
}
.chat-title {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}
.chat-title span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--ink-2);
}
.chat-title i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
}
.window-dots {
  margin-left: auto;
  display: flex;
  gap: 6px;
}
.window-dots b {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
}
.window-dots b:nth-child(1) { background: var(--coral); }
.window-dots b:nth-child(2) { background: var(--sun); }
.window-dots b:nth-child(3) { background: var(--mint); }

.chat-body {
  padding: 22px 18px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.msg {
  max-width: 88%;
  font-size: 0.92rem;
}
.msg-user {
  align-self: flex-end;
  background: var(--indigo);
  color: #fff;
  padding: 10px 14px;
  border-radius: 14px 14px 4px 14px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.msg-user small {
  font-size: 0.68rem;
  opacity: 0.7;
}
.msg-cmd {
  align-self: flex-start;
}
.msg-cmd code {
  background: var(--sun-soft);
  border: 1px dashed var(--sun);
  color: #7a5600;
  font-size: 0.85rem;
  padding: 7px 12px;
  white-space: normal;
}
.msg-bot {
  align-self: flex-start;
  display: flex;
  gap: 10px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  padding: 12px 14px;
  border-radius: 4px 14px 14px 14px;
}
.tiny-avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 700;
}
.msg-bot p {
  font-size: 0.86rem;
  color: var(--ink-2);
  margin-top: 2px;
}
.msg-meta {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-2);
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: 12px;
  padding: 10px 16px;
  box-shadow: var(--shadow-hard-sm);
  font-size: 0.8rem;
}
.float-card span {
  display: block;
  color: var(--ink-2);
  font-size: 0.72rem;
}
.float-card strong {
  font-size: 0.9rem;
}
.float-card svg {
  width: 26px;
  height: 26px;
  color: var(--sun-text);
}
.float-a {
  top: -26px;
  right: -14px;
  transform: rotate(3deg);
  animation: floaty 5s ease-in-out infinite;
}
.float-b {
  bottom: -24px;
  left: -20px;
  transform: rotate(-3deg);
  animation: floaty 6s ease-in-out infinite reverse;
}
.float-dice {
  display: grid !important;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--ink);
  border-radius: 9px;
  background: var(--indigo);
  color: #fff !important;
  font-family: var(--mono);
  font-size: 0.68rem !important;
  font-weight: 700;
}
@keyframes floaty {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -8px; }
}

.sticker {
  position: absolute;
  top: 42%;
  left: -34px;
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--coral);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
  border: 1.5px solid var(--ink);
  transform: rotate(-10deg);
  box-shadow: var(--shadow-hard-sm);
}

/* --- 平台滚动条 --- */
.platform-rail {
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  padding: 13px 0;
}
.platform-track {
  display: flex;
  align-items: center;
  gap: 34px;
  width: max-content;
  animation: rail 26s linear infinite;
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}
.platform-track i {
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
  flex: none;
}
@keyframes rail {
  to { transform: translateX(-50%); }
}

/* ---------- 区块标题 ---------- */
.section-head {
  max-width: 640px;
  margin-bottom: 54px;
}
.section-head-center {
  margin-inline: auto;
  text-align: center;
}
.kicker {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--coral-text);
  border: 1px solid currentColor;
  border-radius: 99px;
  padding: 4px 14px;
  margin-bottom: 16px;
}
.kicker-light {
  color: var(--lime);
}
.section-head h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  margin-bottom: 14px;
}
.section-head p {
  color: var(--ink-2);
  font-size: 1.02rem;
}

/* ---------- 特色 ---------- */
.highlights {
  padding: 96px 0;
  background: var(--card);
}
.hl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.hl-card {
  position: relative;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 30px 26px 28px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.hl-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
}
.hl-no {
  position: absolute;
  top: 10px;
  right: 18px;
  font-family: var(--serif);
  font-size: 3.4rem;
  font-weight: 900;
  color: rgba(35, 32, 26, 0.08);
  line-height: 1;
}
.hl-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  background: var(--coral-soft);
  color: var(--coral-text);
  margin-bottom: 20px;
}
.hl-icon svg {
  width: 26px;
  height: 26px;
}
.hl-card:nth-child(2) .hl-icon {
  background: var(--indigo-soft);
  color: var(--indigo);
}
.hl-card:nth-child(3) .hl-icon {
  background: var(--mint-soft);
  color: var(--mint-text);
}
.hl-card h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}
.hl-card p {
  font-size: 0.94rem;
  color: var(--ink-2);
}

/* ---------- 功能图鉴 ---------- */
.catalog {
  padding: 96px 0 110px;
  background: var(--paper);
  border-top: 1.5px solid var(--ink);
}
.catalog-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

/* --- 侧边目录 --- */
.catalog-aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  min-width: 0;
}
.aside-box {
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px;
  box-shadow: var(--shadow-hard-sm);
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--ink);
  border-radius: 10px;
  background: var(--paper);
  padding: 9px 12px;
  margin-bottom: 12px;
}
.search-box svg {
  flex: none;
  color: var(--ink-2);
  width: 16px;
  height: 16px;
}
.search-box input {
  border: none;
  background: none;
  outline: none;
  font: inherit;
  font-size: 0.9rem;
  width: 100%;
  color: var(--ink);
}
.search-box input::placeholder {
  color: var(--ink-2);
  opacity: 1;
}
.aside-count {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-2);
  padding: 0 4px 12px;
  border-bottom: 1px dashed var(--ink-3);
  margin-bottom: 10px;
}
.aside-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.aside-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-2);
  transition: background 0.18s, color 0.18s;
}
.aside-link i {
  margin-left: auto;
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-2);
}
.aside-link:hover {
  background: var(--paper-2);
  color: var(--ink);
}
.aside-link.is-active {
  background: var(--ink);
  color: var(--paper);
}
.aside-link.is-active i {
  color: var(--lime);
}
.aside-glyph {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  font-family: var(--serif);
  font-size: 0.82rem;
  font-weight: 800;
  background: var(--paper-2);
  color: var(--ink);
  flex: none;
}
.aside-link.is-active .aside-glyph {
  background: var(--lime);
}

/* --- 分组标题 --- */
.fx-group + .fx-group {
  margin-top: 64px;
}
.fx-group-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--ink);
}
.fx-group-glyph {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border: 1.5px solid var(--ink);
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
  background: var(--coral);
  box-shadow: var(--shadow-hard-sm);
  flex: none;
}
#cat-community .fx-group-glyph { background: var(--mint); }
#cat-game .fx-group-glyph { background: var(--sun); }
#cat-life .fx-group-glyph { background: var(--indigo); }
#cat-admin .fx-group-glyph { background: var(--violet); }
.fx-group-head h3 {
  font-size: 1.55rem;
}
.fx-group-head p {
  font-size: 0.9rem;
  color: var(--ink-2);
}

/* --- 功能卡片 --- */
.fx-card {
  position: relative;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--card);
  padding: 28px 28px 24px;
  margin-bottom: 22px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.fx-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
}
.fx-card[hidden] {
  display: none;
}
.fx-no {
  position: absolute;
  top: 14px;
  right: 22px;
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 900;
  color: rgba(35, 32, 26, 0.09);
  line-height: 1;
  pointer-events: none;
}
.fx-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  padding-right: 56px;
}
.fx-toggle {
  display: none;
}
.fx-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex: none;
  border: 1.5px solid var(--ink);
  border-radius: 12px;
  background: var(--paper);
}
.fx-icon svg {
  width: 24px;
  height: 24px;
}
.fx-title h4 {
  font-size: 1.3rem;
  margin-bottom: 5px;
}
.fx-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 9px;
  border-radius: 99px;
  border: 1px solid var(--ink-3);
  color: var(--ink-2);
}
.tag-coral { border-color: var(--coral); color: var(--coral-text); background: var(--coral-soft); }
.tag-indigo { border-color: var(--indigo); color: var(--indigo); background: var(--indigo-soft); }
.tag-mint { border-color: var(--mint); color: var(--mint-text); background: var(--mint-soft); }
.tag-sun { border-color: var(--sun); color: var(--sun-text); background: var(--sun-soft); }
.tag-ff { border-color: var(--violet); color: var(--violet-text); background: var(--violet-soft); }
.tag-warn { border-style: dashed; border-color: var(--coral); color: var(--coral-text); }

.fx-desc {
  font-size: 0.96rem;
  color: var(--ink-2);
  margin-bottom: 20px;
  max-width: 62em;
}
.fx-desc strong {
  color: var(--ink);
}

.fx-cmds {
  border-top: 1px dashed var(--ink-3);
  padding-top: 6px;
}
.fx-cmds > div {
  display: grid;
  grid-template-columns: minmax(0, auto) 1fr;
  gap: 8px 20px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(35, 32, 26, 0.12);
}
.fx-cmds > div:last-child {
  border-bottom: none;
}
.fx-cmds dt code {
  background: var(--dark);
  color: var(--lime);
  border: none;
  font-size: 0.8rem;
  padding: 4px 10px;
  white-space: normal;
  word-break: break-all;
  display: inline-block;
}
.fx-cmds dd {
  font-size: 0.86rem;
  color: var(--ink-2);
}

.fx-example {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  background: var(--paper);
  border: 1px dashed var(--ink-3);
  border-radius: 10px;
  padding: 9px 14px;
}
.fx-example span {
  flex: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: var(--coral);
  border-radius: 6px;
  padding: 2px 8px;
}
.fx-example code {
  background: none;
  border: none;
  padding: 0;
  color: var(--ink);
  font-size: 0.85rem;
  white-space: normal;
  word-break: break-all;
  overflow-wrap: anywhere;
  min-width: 0;
}

.catalog-empty {
  text-align: center;
  padding: 70px 20px;
  border: 1.5px dashed var(--ink-3);
  border-radius: var(--radius);
  color: var(--ink-2);
}
.catalog-empty svg {
  width: 40px;
  height: 40px;
  color: var(--ink-2);
  margin-bottom: 12px;
}
.catalog-empty p {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--ink);
}
.catalog-empty span {
  font-size: 0.88rem;
}

/* ---------- 快速上手 ---------- */
.start {
  padding: 100px 0;
  background: var(--dark);
  color: #efe9db;
  border-top: 1.5px solid var(--ink);
}
.start-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.start-intro h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  margin-bottom: 16px;
}
.start-intro > p {
  color: #b3a98f;
  margin-bottom: 36px;
}
.start-intro code {
  background: var(--dark-2);
  border-color: rgba(239, 233, 219, 0.2);
  color: var(--lime);
}
.steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.steps li {
  display: flex;
  gap: 16px;
}
.steps li > span {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--lime);
  color: var(--lime);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.9rem;
}
.steps strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 2px;
}
.steps p {
  font-size: 0.9rem;
  color: #b3a98f;
}
.steps code {
  background: var(--dark-2);
  border-color: rgba(239, 233, 219, 0.2);
  color: var(--lime);
}

.cmd-board {
  background: var(--dark-2);
  border: 1.5px solid rgba(239, 233, 219, 0.25);
  border-radius: 16px;
  overflow: hidden;
}
.board-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 20px;
  border-bottom: 1.5px solid rgba(239, 233, 219, 0.15);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: #b3a98f;
}
.board-topbar div {
  display: flex;
  gap: 6px;
}
.board-topbar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #b3a98f;
  opacity: 0.4;
}
.cmd-list {
  padding: 10px 20px;
}
.cmd-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(239, 233, 219, 0.14);
}
.cmd-row:last-child {
  border-bottom: none;
}
.cmd-row span {
  display: block;
  font-size: 0.76rem;
  color: #b3a98f;
  margin-bottom: 3px;
}
.cmd-row code {
  background: none;
  border: none;
  padding: 0;
  color: var(--lime);
  font-size: 0.9rem;
  white-space: normal;
}
.cmd-row button {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(239, 233, 219, 0.3);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.8rem;
  color: #efe9db;
  transition: background 0.18s, border-color 0.18s;
}
.cmd-row button:hover {
  background: rgba(230, 244, 92, 0.12);
  border-color: var(--lime);
}
.cmd-row button em {
  font-style: normal;
}
.cmd-row button.is-copied {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--dark);
}
.board-note {
  padding: 14px 20px 18px;
  font-size: 0.82rem;
  color: #b3a98f;
  border-top: 1.5px solid rgba(239, 233, 219, 0.15);
}
.board-note span {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--dark);
  background: var(--lime);
  border-radius: 5px;
  padding: 2px 7px;
  margin-right: 8px;
}
.board-note code {
  background: var(--dark);
  border-color: rgba(239, 233, 219, 0.2);
  color: var(--lime);
}

/* ---------- 开源部署 ---------- */
.open-source {
  padding: 100px 0;
  background: var(--lime);
  border-top: 1.5px solid var(--ink);
}
.os-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 64px;
  align-items: center;
}
.os-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 240px;
  height: 240px;
  margin-inline: auto;
}
.os-mark > div {
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  border-radius: 34px;
  background: var(--ink);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 2.1rem;
  font-weight: 700;
  border: 1.5px solid var(--ink);
  box-shadow: var(--shadow-hard);
  transform: rotate(-4deg);
  position: relative;
  z-index: 1;
}
.os-ring {
  position: absolute;
  inset: 0;
  border: 1.5px dashed var(--ink);
  border-radius: 50%;
  animation: spin 24s linear infinite;
}
.os-ring-b {
  inset: 22px;
  animation-duration: 16s;
  animation-direction: reverse;
  opacity: 0.5;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.os-copy .kicker {
  color: var(--ink);
}
.os-copy h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  margin-bottom: 16px;
}
.os-copy > p {
  color: rgba(35, 32, 26, 0.75);
  max-width: 36em;
  margin-bottom: 26px;
}
.os-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin-bottom: 34px;
}
.os-points li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
}
.os-points svg {
  color: var(--mint-text);
  stroke-width: 2.4;
}
.os-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.text-link {
  font-weight: 700;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.text-link:hover {
  opacity: 0.65;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--dark);
  color: #b3a98f;
  border-top: 1.5px solid var(--ink);
  padding: 56px 0 30px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(239, 233, 219, 0.14);
  flex-wrap: wrap;
}
.footer-brand .brand-name {
  color: #efe9db;
}
.footer-brand p {
  margin-top: 14px;
  font-size: 0.9rem;
  max-width: 24em;
}
.footer-links {
  display: flex;
  gap: 64px;
}
.footer-links > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.92rem;
}
.footer-links strong {
  color: #efe9db;
  margin-bottom: 4px;
}
.footer-links a {
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--lime);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  font-size: 0.82rem;
  font-family: var(--mono);
}

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--lime);
  border: 1.5px solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  opacity: 0;
  translate: 0 8px;
  transition: opacity 0.25s, translate 0.25s, transform 0.15s;
}
.back-top.is-visible {
  opacity: 1;
  translate: 0 0;
}
.back-top:hover {
  transform: translate(-2px, -2px);
}
.back-top svg {
  width: 20px;
  height: 20px;
}

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  translate: 0 26px;
  transition: opacity 0.65s ease, translate 0.65s ease;
}
.reveal.is-in {
  opacity: 1;
  translate: 0 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; translate: none; transition: none; }
  .platform-track, .os-ring, .float-a, .float-b, .eyebrow-dot { animation: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 70px;
    padding-bottom: 72px;
  }
  .chat-stage {
    max-width: 560px;
  }
  .sticker { left: auto; right: -16px; top: -40px; }
  .catalog-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .catalog-aside {
    position: static;
  }
  .aside-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .aside-link i { margin-left: 4px; }
  .start-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .os-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }
}

@media (max-width: 760px) {
  .shell { width: calc(100% - 36px); }
  .site-navigation {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1.5px solid var(--ink);
    padding: 8px 18px 16px;
    translate: 0 -12px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      translate 0.25s,
      opacity 0.25s,
      visibility 0s linear 0.25s;
  }
  .site-navigation.is-open {
    translate: 0 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }
  .site-navigation a {
    padding: 12px 6px;
    border-bottom: 1px dashed rgba(35, 32, 26, 0.15);
  }
  .site-navigation a::after { display: none; }
  .nav-github {
    justify-content: center;
    margin-top: 12px;
  }
  .menu-toggle { display: flex; }
  .brand-name em { display: none; }
  .hl-grid { grid-template-columns: 1fr; }
  .hero-facts { gap: 26px; }
  .fx-card { padding: 22px 18px 20px; }
  .fx-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin: -2px 0 0;
    padding: 9px 12px;
    border: 1px solid var(--ink-3);
    border-radius: 9px;
    background: var(--paper);
    color: var(--ink-2);
    font-size: 0.84rem;
    font-weight: 700;
  }
  .fx-toggle::after {
    content: "+";
    font-family: var(--mono);
    font-size: 1rem;
    line-height: 1;
  }
  .fx-toggle[aria-expanded="true"] {
    margin-bottom: 16px;
  }
  .fx-toggle[aria-expanded="true"]::after { content: "−"; }
  .fx-cmds > div { grid-template-columns: 1fr; gap: 4px; }
  .fx-no { font-size: 2rem; }
  .float-a { right: 0; }
  .float-b { left: 0; }
  .footer-links { gap: 40px; }
  .back-top { right: 16px; bottom: 16px; }
}