/* ============================================================
   蓝柠云 · 云协作 — www.blny.top
   设计语言：Calm Glass（蓝白灰）· 通透玻璃 · 全屏极光渐变
   ------------------------------------------------------------
   分区（四个样式文件共用同一套分区编号，改样式先定位分区）：
     01  令牌      色彩 / 层级 / 通透材质 / 阴影 / 形状 / 动效
     02  基础      重置与全局元素
     03  背景层    全屏渐变 + 光斑（全站唯一的渐变绘制源）
     04  玻璃材质  通透面（玻璃 / 强玻璃）
     05  顶部导航
     06  首页 Hero 与工作台预览
     07  区块通用
     08  首页功能区 / 三步链路 / 安全分屏 / 自托管 / FAQ / CTA / 页脚
     09  入场动画
     10  响应式
     11  细节点缀
   ============================================================ */

/* ===== 01 · 令牌 =====
   全站唯一的取值处：其它样式文件只引用变量，不再重复定义字面量。
   层级、渐变、光斑、模糊都在这里，改一处全站生效。 */

/* 显式 display 规则会覆盖 UA 的 [hidden]，统一兜底 */
[hidden] { display: none !important; }

:root {
  /* --- 品牌与信号色（只用在选中态、强调文字与主按钮上，不再用来铺面） --- */
  --signal-primary: #2f9d78;
  --signal-primary-strong: #247a5d;
  --signal-primary-soft: #dcece5;
  --signal-sky: #63b796;
  --signal-ink: #1d5c47;

  /* --- 画布与文本：文字压到近黑，界面靠黑白灰立骨架 --- */
  --canvas: #ffffff;
  --canvas-elevated: rgba(255, 255, 255, .88);   /* 输入框 / 卡片面 */
  --text-primary: #14181a;
  --text-secondary: #4d5559;
  --text-tertiary: #7e8689;

  /* 分隔线用低透明度的发丝线：面板是半透明的（底下可能是壁纸），
     固定灰色在上面会显得很硬，深色主题尤其像一条黑线 */
  --line: rgba(22, 35, 59, .12);
  --line-soft: rgba(22, 35, 59, .07);

  /* 悬停/选中的浅底：中性灰。以前是浅绿，全站到处泛绿主要就来自这里 */
  --accent-soft: #eef1ef;
  --focus-ring: rgba(47, 157, 120, .16);

  /* --- 通透材质 --- */
  --material-thin: rgba(255, 255, 255, .72);
  --material-regular: rgba(255, 255, 255, .86);
  --material-thick: rgba(255, 255, 255, .92);
  --material-dialog: rgba(255, 255, 255, .97);
  --material-shell: rgba(255, 255, 255, .86);
  --material-veil: rgba(255, 255, 255, .56);

  --material-shell-border: rgba(255, 255, 255, .7);
  --material-hairline: rgba(255, 255, 255, .6);
  --material-dialog-border: rgba(255, 255, 255, .85);
  --optical-edge-top: inset 0 1px 0 rgba(255, 255, 255, .7);

  /* 模糊与阴影整体收一档：面片更平，界面更静 */
  --blur-sm: 6px;
  --blur-md: 12px;
  --blur-lg: 20px;
  --glass-saturate: 120%;

  --vision-shadow-sm: 0 1px 2px rgba(20, 24, 26, .04);
  --vision-shadow-md: 0 1px 2px rgba(20, 24, 26, .04), 0 6px 16px rgba(20, 24, 26, .06);
  --vision-shadow-lg: 0 2px 6px rgba(20, 24, 26, .05), 0 16px 40px rgba(20, 24, 26, .09);

  /* --- 整窗背景：左上角起手、沿对角线越来越淡，过半基本看不见 --- */
  --bg-gradient: linear-gradient(135deg, #e2eae6 0%, #ecf0ee 28%, #f6f7f7 52%, #f8f9f9 100%);
  --control-grad: linear-gradient(180deg, #fdfdfd 0%, #f3f5f4 100%);

  /* --- 背景光斑：压到几乎看不见，只作极淡的层次 --- */
  --aurora-a: radial-gradient(closest-side, rgba(47, 157, 120, .10), rgba(47, 157, 120, 0));
  --aurora-b: radial-gradient(closest-side, rgba(47, 157, 120, .06), rgba(47, 157, 120, 0));
  --aurora-c: radial-gradient(closest-side, rgba(255, 255, 255, .55), rgba(255, 255, 255, 0));
  --bg-haze: radial-gradient(120% 78% at 50% 46%, rgba(255, 255, 255, .5) 0%, rgba(255, 255, 255, 0) 62%);
  --veil-opacity: .07;

  /* --- 头像与自己的消息气泡：用近黑，不再用绿块 --- */
  --avatar-bg: #262b29;
  --avatar-fg: #ffffff;
  --bubble-mine-bg: #24292b;
  --bubble-mine-fg: #ffffff;

  /* --- 形状与动效 --- */
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;

  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --ease: cubic-bezier(.25, .6, .3, 1);
  --ease-spring: cubic-bezier(.2, .8, .2, 1);
  --dur-fast: .18s;
  --dur-base: .26s;
  --dur-slow: .35s;
  --underline-offset: 0.45em;

  /* --- 层级 --- */
  --z-bg: -1;
  --z-content: 2;
  --z-side: 45;
  --z-header: 50;
  --z-menu: 60;
  --z-mask: 100;
  --z-toast: 130;
  --z-alert: 200;
}

/* 深色：以黑为主，只保留极低饱和的绿灰，不再整屏发绿 */
.dark {
  --canvas: #0a0c0b;
  --canvas-elevated: rgba(30, 34, 32, .86);

  --text-primary: #eceeed;
  --text-secondary: #a1a8a5;
  --text-tertiary: #767d7a;

  --line: rgba(255, 255, 255, .12);
  --line-soft: rgba(255, 255, 255, .07);

  --signal-primary: #4fb894;
  --signal-primary-strong: #7ed8b6;
  --signal-primary-soft: #1a2b25;
  --signal-sky: #7ed8b6;
  --accent-soft: rgba(255, 255, 255, .07);
  --focus-ring: rgba(79, 184, 148, .24);

  /* --- 整窗背景（深色）：同样左上起手，过半收敛到纯黑 --- */
  --bg-gradient: linear-gradient(135deg, #141b18 0%, #101614 30%, #0b0e0d 52%, #0a0c0b 100%);
  --control-grad: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .03));

  /* --- 背景光斑：低亮度、极低饱和 --- */
  --aurora-a: radial-gradient(closest-side, rgba(79, 184, 148, .10), rgba(79, 184, 148, 0));
  --aurora-b: radial-gradient(closest-side, rgba(79, 184, 148, .06), rgba(79, 184, 148, 0));
  --aurora-c: radial-gradient(closest-side, rgba(255, 255, 255, .05), rgba(255, 255, 255, 0));
  --bg-haze: radial-gradient(120% 78% at 50% 46%, rgba(160, 200, 185, .05) 0%, rgba(160, 200, 185, 0) 62%);

  /* --- 通透材质（深色） --- */
  --material-thin: rgba(28, 32, 30, .78);
  --material-regular: rgba(22, 26, 24, .9);
  --material-thick: rgba(20, 24, 22, .94);
  --material-dialog: rgba(18, 21, 20, .97);
  --material-shell: rgba(16, 19, 18, .9);
  --material-veil: rgba(16, 19, 18, .58);

  --material-shell-border: rgba(255, 255, 255, .09);
  --material-hairline: rgba(255, 255, 255, .1);
  --material-dialog-border: rgba(255, 255, 255, .1);
  --optical-edge-top: inset 0 1px 0 rgba(255, 255, 255, .06);

  --vision-shadow-sm: 0 1px 2px rgba(0, 0, 0, .28);
  --vision-shadow-md: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 20px rgba(0, 0, 0, .34);
  --vision-shadow-lg: 0 2px 6px rgba(0, 0, 0, .34), 0 18px 44px rgba(0, 0, 0, .42);

  --avatar-bg: rgba(255, 255, 255, .16);
  --avatar-fg: #ffffff;
  --bubble-mine-bg: rgba(255, 255, 255, .16);
  --bubble-mine-fg: #ffffff;
}

/* ===== 02 · 基础 ===== */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  min-height: 100%;
  /* 常驻滚动条槽位：内容增高/变矮（如侧栏折叠引起文字重排）时
     纵向滚动条不再出现→消失→出现，视口宽度就不会跳 ±滚动条宽，
     fixed 的全屏背景（cover 铺满视口）也就不会跟着缩放一下 */
  scrollbar-gutter: stable;
  /* 根元素只兜一层纯色（防白闪）。渐变统一由 03 的 .app-background 绘制，
     避免"根背景按文档盒铺、覆盖层按视口铺"两张同色渐变在交界处错位 */
  background: var(--canvas);
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--text-primary);
  /* 透明：让根元素上的"整窗渐变"透出来（否则会被整页纯色盖住） */
  background: transparent;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; }
/* 图片不做原生拖拽源：拖到文件区会被当成上传，也避免拖看板卡片时拖走卡里的图 */
img { -webkit-user-drag: none; user-drag: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ol, ul { margin: 0; }
button { font-family: inherit; }

.shell { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }
.section.shell.narrow { width: min(860px, calc(100% - 48px)); }

::selection { background: rgba(47, 157, 120, .18); }

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

/* ===== 03 · 背景层 =====
   全站唯一的渐变绘制源，五个页面共用同一份结构：
     渐变 → 三处光斑 → 中央雾化 → 网格纱
   fixed + inset:0 → 无论页面多长、滚到哪里，都铺满整个视口，
   于是顶栏、侧栏、主内容区透出的是同一张渐变，中间不再有接缝。
   改动此分区时，四个模板里的 .app-background 结构要一起改。 */
.app-background {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  overflow: hidden;
  pointer-events: none;
  background: var(--bg-gradient);
}

/* 光斑用径向渐变而非 filter: blur()：同样柔和，但没有模糊层的离屏合成开销 */
.bg-aurora {
  position: absolute;
  border-radius: 50%;
  animation: drift 22s var(--ease) infinite alternate;
}
.bg-aurora.is-a { width: 46vw; height: 46vw; left: -13vw; top: -15vw; background: var(--aurora-a); }
.bg-aurora.is-b { width: 42vw; height: 42vw; right: -14vw; bottom: -18vw; background: var(--aurora-b); animation-delay: -7s; }
.bg-aurora.is-c { width: 38vw; height: 38vw; left: 31vw; top: 22vh; background: var(--aurora-c); animation-delay: -14s; }

/* 中央雾化：提亮渐变中段，视线落在主内容区时背景不塌陷 */
.bg-haze { position: absolute; inset: 0; background: var(--bg-haze); }

.grid-veil {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: var(--veil-opacity);
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(2vw, 1.5vh, 0) scale(1.05); }
}

/* ===== 04 · 玻璃材质 =====
   面是半透明的，背后的渐变透上来 → 整体通透。
   模糊只加在"内容会从背后经过"的面（顶栏 / 弹窗 / 下拉 / 大面板），
   列表项一类小面片只做半透明，省掉逐帧的后背重采样。 */
.glass {
  background: var(--material-regular);
  border: 1px solid var(--material-shell-border);
  box-shadow: var(--optical-edge-top), var(--vision-shadow-sm);
  backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
}

.glass-strong {
  background: var(--material-dialog);
  border: 1px solid var(--material-dialog-border);
  box-shadow: var(--optical-edge-top), var(--vision-shadow-lg);
  backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
}


/* ===== 05 · 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-menu);
  transition: background var(--dur-slow) var(--ease), box-shadow var(--dur-slow) var(--ease), border-color var(--dur-slow) var(--ease);
  border-bottom: 1px solid transparent;
}
/* 滚动后只加一层薄雾 + 模糊：内容从底下透出来，整页渐变仍然连贯 */
.site-header.scrolled {
  background: var(--material-veil);
  backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
  border-bottom-color: var(--line-soft);
  box-shadow: 0 1px 0 var(--material-hairline), 0 8px 24px rgba(22, 35, 59, .06);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 66px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: .2px; }
.brand-text i { font-style: normal; color: var(--text-tertiary); font-weight: 500; }

.brand-logo { width: 28px; height: 28px; border-radius: 8px; object-fit: cover; }
.brand-logo.small { width: 22px; height: 22px; border-radius: 6px; }

.main-nav { display: flex; gap: 4px; margin-inline: auto; }
.main-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--text-secondary);
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: var(--text-primary); background: var(--accent-soft); }

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

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--material-regular);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color .2s, border-color .2s, transform .2s;
}
.icon-btn:hover { color: var(--signal-primary); border-color: transparent; background: var(--accent-soft); }
.icon-moon { display: none; }
.dark .icon-sun { display: none; }
.dark .icon-moon { display: block; }

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s var(--ease-spring), box-shadow .2s, background .2s, border-color .2s, color .2s;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--signal-primary);
  color: #fff;
  box-shadow: none;
}
.btn-primary:hover { background: var(--signal-primary-strong); box-shadow: none; }

.btn-ghost {
  border-color: var(--line);
  color: var(--text-primary);
  background: var(--material-thin);
}
.btn-ghost:hover { border-color: var(--signal-primary); color: var(--signal-primary); background: var(--accent-soft); }

.btn-glass {
  background: var(--material-regular);
  backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
  border: 1px solid var(--material-shell-border);
  color: var(--text-primary);
  box-shadow: var(--vision-shadow-sm);
}
.btn-glass:hover { border-color: var(--signal-primary); background: var(--accent-soft); }

.btn-lg { padding: 13px 26px; font-size: 15.5px; }

/* --- 移动端菜单按钮 --- */
.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 9px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--material-regular);
  cursor: pointer;
}
.menu-btn:hover { background: var(--accent-soft); }
.menu-btn span { display: block; height: 2px; border-radius: 2px; background: var(--text-primary); transition: transform .3s var(--ease), opacity .2s; }
.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  top: 66px;
  left: 16px;
  right: 16px;
  z-index: 55;
  display: grid;
  gap: 4px;
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--material-dialog);
  backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
  border: 1px solid var(--material-dialog-border);
  box-shadow: var(--vision-shadow-lg);
}
.mobile-nav a { padding: 11px 12px; border-radius: 10px; font-weight: 500; }
.mobile-nav a:hover { background: var(--accent-soft); }
.mobile-nav-cta { display: flex; gap: 10px; padding-top: 10px; border-top: 1px solid var(--line-soft); margin-top: 6px; }
.mobile-nav-cta .btn { flex: 1; }

/* ===== 06 · 首页 Hero 与工作台预览 ===== */
.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  padding-block: clamp(64px, 9vh, 110px) clamp(56px, 8vh, 96px);
  min-height: 78vh;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .4px;
  color: var(--signal-ink);
  background: var(--accent-soft);
  border: 1px solid rgba(47, 157, 120, .18);
}
.dark .hero-badge { color: var(--signal-primary-strong); border-color: rgba(79, 139, 251, .25); }
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal-primary);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .45; transform: scale(.8); } }

.hero h1 {
  margin-top: 20px;
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.22;
  letter-spacing: -.5px;
  font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  color: var(--signal-primary);
}

.hero-sub {
  margin-top: 20px;
  max-width: 34em;
  font-size: 17px;
  color: var(--text-secondary);
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hero-cta.center { justify-content: center; }

.hero-note { margin-top: 16px; font-size: 13.5px; color: var(--text-tertiary); }
.hero-kicker { margin-top: 34px; font-size: 13px; letter-spacing: 2.5px; color: var(--text-tertiary); font-weight: 600; }

/* --- 工作台预览窗口 --- */
.hero-visual { position: relative; }
.mock-window {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--vision-shadow-lg);
  animation: floaty 7s ease-in-out infinite;
}
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--material-thin);
}
.tb-dot { width: 11px; height: 11px; border-radius: 50%; background: #d7dee9; }
.tb-dot:nth-child(1) { background: #f6a9a0; }
.tb-dot:nth-child(2) { background: #f5d38f; }
.tb-dot:nth-child(3) { background: #cfd5d2; }
.tb-title { margin-left: 10px; font-size: 12.5px; color: var(--text-tertiary); font-weight: 600; }

.mock-body { display: grid; grid-template-columns: 148px 1fr; }

.mock-side {
  display: grid;
  align-content: start;
  gap: 2px;
  padding: 14px 10px;
  border-right: 1px solid var(--line-soft);
  background: var(--material-thin);
}
.side-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: 9px;
  font-size: 13px;
  color: var(--text-secondary);
}
.side-item.active { background: var(--accent-soft); color: var(--signal-ink); font-weight: 600; }
.dark .side-item.active { color: var(--signal-primary-strong); }

.s-ico { width: 15px; height: 15px; border-radius: 5px; background: var(--line); flex: none; }
.side-item.active .s-ico { background: var(--signal-primary); }
.s-ico-file { border-radius: 4px 8px 4px 8px; }
.s-ico-note { border-radius: 3px; }
.s-ico-chat { border-radius: 50%; }
.s-ico-ai { background: var(--signal-primary); }

.mock-main { display: grid; gap: 11px; padding: 16px; align-content: start; }

.mock-card {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 13px;
  border-radius: var(--radius-sm);
  background: var(--canvas-elevated);
  border: 1px solid var(--line-soft);
  box-shadow: var(--vision-shadow-sm);
}
.ai-card { border-color: rgba(47, 157, 120, .35); background: var(--accent-soft); }

.mock-avatar {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  flex: none;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: #5f8a7c;
}
.mock-avatar.ai, .mock-avatar.file { background: var(--avatar-bg); font-size: 15px; }

.mock-line-group { display: grid; gap: 6px; flex: 1; min-width: 0; }
.mock-line-group b { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-line { height: 7px; border-radius: 4px; background: var(--line-soft); }
.mock-line.w80 { width: 80%; }
.mock-line.w70 { width: 70%; }
.mock-line.w60 { width: 60%; }
.mock-line.w45 { width: 45%; }

.mock-chip {
  flex: none;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--signal-ink);
  background: var(--accent-soft);
  white-space: nowrap;
}
.mock-chip.ok { color: #14705c; background: #ddf3ec; }
.dark .mock-chip { color: var(--signal-primary-strong); background: rgba(79, 139, 251, .14); }
.dark .mock-chip.ok { color: #4ade9e; background: rgba(52, 199, 148, .14); }

.mock-progress { display: grid; gap: 7px; font-size: 12px; color: var(--text-tertiary); padding: 2px 4px 0; }
.mock-progress .bar { height: 7px; border-radius: 4px; background: var(--line-soft); overflow: hidden; }
.mock-progress .bar i {
  display: block;
  height: 100%;
  width: 62%;
  border-radius: 4px;
  background: var(--signal-primary);
  animation: upload 2.6s var(--ease) infinite alternate;
}
@keyframes upload { from { width: 34%; } to { width: 82%; } }

/* --- 演示图：统计栏 / 配额 / 看板 --- */
.mock-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.mock-stats .stat {
  display: grid;
  gap: 1px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  background: var(--canvas-elevated);
  border: 1px solid var(--line-soft);
}
.mock-stats .stat b {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 5px;
  font-variant-numeric: tabular-nums;
}
.mock-stats .stat span { font-size: 10.5px; color: var(--text-tertiary); }
.mock-stats .stat.online b { color: #14705c; }
.dark .mock-stats .stat.online b { color: #4ade9e; }
.live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #34c794;
  box-shadow: 0 0 0 3px rgba(52, 199, 148, .18);
  animation: pulse-dot 2.2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

.side-quota {
  margin-top: 14px;
  padding: 11px 10px;
  border-radius: 10px;
  background: var(--canvas-elevated);
  border: 1px solid var(--line-soft);
  display: grid;
  gap: 7px;
}
.side-quota .quota-text {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
}
.side-quota .quota-text span { font-size: 10.5px; color: var(--text-tertiary); }
.side-quota .quota-text b { font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.side-quota .quota-bar {
  height: 6px;
  border-radius: 4px;
  background: var(--line-soft);
  overflow: hidden;
}
.side-quota .quota-bar i {
  display: block;
  height: 100%;
  width: 65%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--signal-primary), #34c794);
}
.side-quota .quota-hint {
  font-size: 10px;
  line-height: 1.5;
  color: var(--text-tertiary);
}

.mock-kanban {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 11px;
  border-radius: var(--radius-sm);
  background: var(--material-thin);
  border: 1px solid var(--line-soft);
}
.kb-col { display: grid; gap: 6px; align-content: start; min-width: 0; }
.kb-head { font-size: 10.5px; font-weight: 700; color: var(--text-tertiary); letter-spacing: .3px; }
.kb-card {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 8px;
  border-radius: 7px;
  background: var(--canvas-elevated);
  border: 1px solid var(--line-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
}
.kb-card.ai { border-color: rgba(47, 157, 120, .4); color: var(--signal-ink); background: var(--accent-soft); }
.dark .kb-card.ai { color: var(--signal-primary-strong); }
.kb-card.done { opacity: .55; text-decoration: line-through; }
.kb-card.w-full { width: 100%; }
.kb-card.w60 { width: 82%; }
.kb-card.w40 { width: 62%; }

/* --- 悬浮信息片 --- */
.float-chip {
  position: absolute;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--vision-shadow-md);
  animation: floaty 6s ease-in-out infinite;
}
.chip-1 { left: -26px; bottom: 42px; animation-delay: -2s; }
.chip-2 { right: -18px; top: 34px; animation-delay: -4s; }

/* ===== 07 · 区块通用 ===== */
.section { padding-block: clamp(56px, 8vh, 96px); }

.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head.center, .section-head + .faq-list { margin-inline: auto; }

.section-tag {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--signal-primary);
  margin-bottom: 12px;
}

.section-head h2, .split-copy h2, .selfhost-head h2, .cta h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.28;
  letter-spacing: -.3px;
  font-weight: 800;
}

.section-sub { margin-top: 14px; color: var(--text-secondary); font-size: 16px; }

/* ===== 08 · 首页功能区 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 26px 24px 24px;
  border-radius: var(--radius-lg);
  transition: transform .3s var(--ease-spring), box-shadow .3s, border-color .3s;
}
.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--vision-shadow-md);
  border-color: var(--line);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  margin-bottom: 18px;
  color: #fff;
  box-shadow: var(--vision-shadow-sm);
}
/* 功能图标统一成「浅底 + 绿字」，不再铺六种实心色 */
.feature-icon { background: var(--accent-soft); color: var(--signal-primary); box-shadow: none; }

.feature-card h3 { font-size: 17.5px; font-weight: 700; margin-bottom: 9px; }
.feature-card p { font-size: 14.5px; color: var(--text-secondary); }

/* --- 三步链路 --- */
.flow-grid {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: step;
}

.flow-card {
  position: relative;
  padding: 28px 24px 22px;
  border-radius: var(--radius-lg);
  transition: transform .3s var(--ease-spring), box-shadow .3s;
}
.flow-card:hover { transform: translateY(-2px); box-shadow: var(--vision-shadow-md); }

.flow-num {
  display: inline-grid;
  place-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--signal-primary);
  background: var(--accent-soft);
  margin-bottom: 16px;
}
.flow-card h3 { font-size: 19px; margin-bottom: 9px; }
.flow-card p { font-size: 14.5px; color: var(--text-secondary); margin-bottom: 14px; }
.flow-meta {
  display: block;
  font-size: 12.5px;
  color: var(--text-tertiary);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

/* --- 安全分屏 --- */
.split {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: 32px;
  padding: clamp(30px, 4vw, 52px);
  border-radius: calc(var(--radius-lg) + 6px);
}

.check-list { list-style: none; padding: 0; margin-top: 26px; display: grid; gap: 14px; }
.check-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15.5px; color: var(--text-secondary); }

.check {
  flex: none;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--signal-primary);
  box-shadow: 0 3px 8px rgba(47, 157, 120, .3);
}
.check::after {
  content: "";
  width: 5px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translateY(-1px);
}

.split-visual { position: relative; height: 300px; }

.lock-ring {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  width: 118px;
  height: 118px;
  border-radius: 50%;
  color: var(--signal-primary);
  background: var(--material-thick);
  border: 1px solid var(--material-shell-border);
  box-shadow: var(--vision-shadow-md);
  z-index: 2;
}

.orbit {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px dashed var(--line);
}
.orbit-1 { width: 210px; height: 210px; animation: spin 16s linear infinite; }
.orbit-2 { width: 288px; height: 288px; animation: spin 26s linear infinite reverse; }
.orbit i {
  position: absolute;
  top: -5px; left: 50%;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--signal-sky);
  box-shadow: 0 0 12px rgba(14, 165, 233, .7);
}
.orbit-2 i { background: var(--signal-primary); box-shadow: 0 0 12px rgba(47, 157, 120, .65); }

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

/* --- 自托管终端 --- */
.selfhost {
  padding: clamp(30px, 4vw, 52px);
  border-radius: calc(var(--radius-lg) + 6px);
}
.selfhost-head { margin-bottom: 30px; }

.terminal {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #0d1420;
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: var(--vision-shadow-md);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, .05);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.terminal-bar span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .16); }
.terminal-bar span:nth-child(1) { background: #f6a9a0; }
.terminal-bar span:nth-child(2) { background: #f5d38f; }
.terminal-bar span:nth-child(3) { background: #9fd8a8; }
.terminal-bar b { margin-left: 8px; font-size: 12px; font-weight: 500; color: rgba(255, 255, 255, .4); }

.terminal pre {
  margin: 0;
  padding: 20px 22px 24px;
  overflow-x: auto;
  font-family: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 13.5px;
  line-height: 1.75;
  color: #c9d6ea;
}
.t-prompt { color: #63b796; }
.t-flag { color: #64748b; }
.t-ok { color: #4ade80; }
.t-dim { color: #7d8aa1; }

/* --- 自托管说明条 --- */
.selfhost-notes {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 16px;
}
.selfhost-note {
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: var(--radius-sm, 10px);
  padding: 12px 14px;
  display: grid;
  gap: 4px;
  background: rgba(148, 163, 184, .05);
}
.selfhost-note b { font-size: 13px; color: var(--text-primary, #e8eef7); }
.selfhost-note span { font-size: 12.5px; line-height: 1.6; color: var(--text-tertiary, #8fa0b8); }
.selfhost-note code {
  font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-size: 12px;
  color: #63b796;
  white-space: nowrap;
}
@media (max-width: 720px) {
  .selfhost-notes { grid-template-columns: 1fr; }
}

/* --- FAQ --- */
.faq-list { display: grid; gap: 13px; }

.faq {
  border-radius: var(--radius-md);
  padding: 0 22px;
  transition: box-shadow .3s, border-color .3s;
}
.faq[open] { box-shadow: var(--vision-shadow-md); border-color: rgba(47, 157, 120, .35); }

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 0;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }

.faq-arrow {
  flex: none;
  width: 9px; height: 9px;
  border-right: 2px solid var(--text-tertiary);
  border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg);
  transition: transform .3s var(--ease);
}
.faq[open] .faq-arrow { transform: rotate(225deg); }

.faq p { padding: 0 0 20px; color: var(--text-secondary); font-size: 14.5px; max-width: 56em; }

/* --- CTA --- */
.cta {
  text-align: center;
  padding: clamp(44px, 6vw, 76px) clamp(24px, 5vw, 64px);
  border-radius: calc(var(--radius-lg) + 8px);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: rgba(47, 157, 120, .07);
  pointer-events: none;
}
.cta > * { position: relative; }

.cta-kicker {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--signal-primary);
  margin-bottom: 16px;
}
.cta-sub { margin-top: 16px; color: var(--text-secondary); }
.cta .hero-cta { margin-top: 30px; justify-content: center; }
.cta-note { margin-top: 22px; font-size: 12.5px; letter-spacing: 2px; color: var(--text-tertiary); }

/* --- 页脚 --- */
.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--line-soft);
  background: var(--material-shell);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 36px;
  padding-block: 30px;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand b { font-size: 14.5px; }
.footer-brand p { font-size: 12.5px; color: var(--text-tertiary); }

.footer-nav { display: flex; flex-wrap: wrap; gap: 4px; margin-inline: auto; }
.footer-nav a { padding: 6px 12px; border-radius: 8px; font-size: 13.5px; color: var(--text-secondary); }
.footer-nav a:hover { color: var(--signal-primary); background: var(--accent-soft); }

.footer-copy { font-size: 12.5px; color: var(--text-tertiary); }
.footer-copy a { color: var(--signal-primary); font-weight: 600; }

/* ===== 09 · 入场动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.delay-1 { transition-delay: .12s; }
.delay-2 { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ===== 10 · 响应式 ===== */
@media (max-width: 1020px) {
  .hero { grid-template-columns: 1fr; min-height: unset; text-align: left; }
  .hero-visual { max-width: 560px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split-visual { height: 240px; }
}

@media (max-width: 760px) {
  .main-nav { display: none; }
  .header-actions .btn-ghost { display: none; }
  .menu-btn { display: flex; }

  .feature-grid { grid-template-columns: 1fr; }
  .mock-body { grid-template-columns: 118px 1fr; }
  .mock-stats { grid-template-columns: repeat(2, 1fr); }
  .mock-kanban { grid-template-columns: repeat(2, 1fr); }
  .kb-col:nth-child(3) { display: none; }
  .side-quota .quota-hint { display: none; }
  .chip-1 { left: 0; bottom: -14px; }
  .chip-2 { right: 0; top: -12px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-nav { margin-inline: 0; }
}

@media (max-width: 460px) {
  .shell { width: calc(100% - 32px); }
  .hero-badge { font-size: 11.5px; }
  .hero-cta .btn { width: 100%; }
}

/* ===== 11 · 细节点缀（白绿 · 叶片与柠檬切片） ===== */
.section-tag { display: inline-flex; align-items: center; gap: 7px; }
.section-tag .tag-leaf { flex: none; color: var(--signal-primary); }

.hero-deco { position: absolute; z-index: 3; color: var(--signal-sky); opacity: .5; pointer-events: none; animation: drift 16s var(--ease) infinite alternate; }
.hero-deco.deco-1 { top: -28px; left: -34px; }
.hero-deco.deco-2 { bottom: -24px; right: -28px; animation-delay: -8s; }
.dark .hero-deco { color: var(--signal-sky); opacity: .4; }

.feature-card, .flow-card { position: relative; overflow: hidden; }
.feature-card::after, .flow-card::after {
  content: "";
  position: absolute; top: -12px; right: -12px;
  width: 60px; height: 60px;
  background: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2363b796' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><path d='M19 5c-8 0-14 4-14 11 3-6 8-9 14-11Z'/><path d='M5 16c3-2 5-3.5 7-6'/></svg>") center/contain no-repeat;
  opacity: .08; pointer-events: none;
}

.cta::after {
  content: "";
  position: absolute; right: 26px; bottom: 20px;
  width: 78px; height: 78px;
  background: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2363b796' stroke-width='1.4'><circle cx='12' cy='12' r='9'/><circle cx='12' cy='12' r='2.2'/><path d='M12 3v6M12 15v6M3 12h6M15 12h6M5.6 5.6l4.2 4.2M14.2 14.2l4.2 4.2M18.4 5.6l-4.2 4.2M9.8 14.2l-4.2 4.2'/></svg>") center/contain no-repeat;
  opacity: .15; pointer-events: none;
}
.dark .cta::after { opacity: .2; }