/* =============================================================
   聚智工作台 ComUiAi · 官网样式（v3.7.0 重构）
   -------------------------------------------------------------
   设计基调：浅色商务、大留白、层级清晰、动效克制。
   · 主色：低饱和商务深蓝（--brand）
   · 底色：白 / 极浅灰（--bg / --bg-soft）
   · 圆角：卡片 14-20px，图片统一圆角
   · 动画：只有 hover 的颜色/阴影/1px 位移，没有滚动特效
   · 断点：>=1200 大屏 / 768-1199 平板 / <768 手机
   ============================================================= */

:root {
  --brand: #1c3f7c;
  --brand-hover: #163260;
  --brand-soft: #eef3fb;
  --brand-line: #dbe5f5;

  --ink: #0d1526;
  --ink-2: #2c3a52;
  --body: #4b5565;
  --muted: #7d8797;

  --line: #e5e9f0;
  --line-soft: #eef1f6;
  --bg: #ffffff;
  --bg-soft: #f7f9fc;
  --bg-tint: #f3f7fd;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow: 0 4px 16px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 24px 60px -16px rgba(16, 24, 40, 0.18);

  --container: 1160px;
  --nav-h: 66px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-top: var(--nav-h);
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.has-dlbar {
  padding-bottom: 78px;
}

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

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

h1,
h2,
h3,
h4,
p,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

b,
strong {
  font-weight: 650;
}

::selection {
  background: #d7e3f7;
  color: var(--ink);
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.mono {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ===================== 顶部导航 ===================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 12px rgba(16, 24, 40, 0.04);
}

.nav-in {
  max-width: var(--container);
  height: var(--nav-h);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  flex: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex: none;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 9px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.brand-sub {
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 2px;
}

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

.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--ink-2);
  transition: color 0.15s var(--ease), background-color 0.15s var(--ease);
  white-space: nowrap;
}

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

.nav-links a.on {
  color: var(--brand);
  font-weight: 600;
  background: var(--brand-soft);
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-ver {
  font-size: 12.5px;
  color: var(--muted);
  margin-right: 2px;
  white-space: nowrap;
}

/* 汉堡按钮：只在移动端出现 */
.nav-burger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.nav-burger i {
  display: block;
  width: 16px;
  height: 1.6px;
  border-radius: 2px;
  background: var(--ink-2);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-burger.open i:nth-child(1) {
  transform: translateY(5.6px) rotate(45deg);
}

.nav-burger.open i:nth-child(2) {
  opacity: 0;
}

.nav-burger.open i:nth-child(3) {
  transform: translateY(-5.6px) rotate(-45deg);
}

/* 移动端下拉菜单 */
.mnav {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 55;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 16px 32px -20px rgba(16, 24, 40, 0.28);
  padding: 10px 20px 18px;
  display: none;
}

.mnav.open {
  display: block;
}

.mnav a {
  display: block;
  padding: 13px 8px;
  font-size: 16px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line-soft);
}

.mnav a.on {
  color: var(--brand);
  font-weight: 600;
}

.mnav .btn {
  margin-top: 14px;
  width: 100%;
}

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    box-shadow 0.18s var(--ease), transform 0.18s var(--ease), color 0.18s var(--ease);
}

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

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -6px rgba(28, 63, 124, 0.45);
}

.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-2);
}

.btn-ghost:hover {
  border-color: #c6d2e4;
  background: #fbfcfe;
  color: var(--ink);
}

.btn-sm {
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
  border-radius: 9px;
}

.btn-lg {
  height: 52px;
  padding: 0 30px;
  font-size: 16px;
  border-radius: 12px;
}

.btn-block {
  width: 100%;
}

/* ===================== 区块与标题 ===================== */
.sec {
  padding: 96px 0;
}

.sec-tight {
  padding: 64px 0;
}

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

.sec-line {
  border-top: 1px solid var(--line-soft);
}

.sec-head {
  max-width: 660px;
  margin-bottom: 48px;
}

.sec-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.eyebrow i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
}

.h1 {
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.15;
  letter-spacing: -0.028em;
  font-weight: 700;
}

.h2 {
  font-size: clamp(25px, 2.8vw, 36px);
  line-height: 1.28;
  letter-spacing: -0.022em;
  font-weight: 700;
}

.h3 {
  font-size: 17.5px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--body);
  margin-top: 20px;
}

.sec-head p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--body);
  margin-top: 16px;
}

.text-muted {
  color: var(--muted);
}

.text-sm {
  font-size: 13px;
}

/* ===================== 首页 Hero ===================== */
.hero {
  position: relative;
  padding: 72px 0 88px;
  background: linear-gradient(180deg, #f8fafd 0%, #ffffff 78%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -140px;
  width: 720px;
  height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 63, 124, 0.07), rgba(28, 63, 124, 0) 68%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  margin-top: 22px;
}

.hero .lead {
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}

.hero-ver {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--muted);
}

.hero-ver b {
  color: var(--ink-2);
  font-weight: 600;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
}

.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  color: var(--body);
}

.hero-points svg {
  width: 15px;
  height: 15px;
  color: var(--brand);
  flex: none;
}

/* 产品预览：纯 CSS 绘制的应用窗口（矢量缩放，永远清晰） */
.hero-visual {
  position: relative;
}

.app {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.app-bar {
  height: 38px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line-soft);
  background: #fcfdff;
}

.app-bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e3e8f0;
}

.app-bar span {
  margin-left: 8px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.app-body {
  display: grid;
  grid-template-columns: 138px 1fr;
  min-height: 344px;
}

.app-side {
  border-right: 1px solid var(--line-soft);
  padding: 16px 12px;
  background: #fcfdff;
}

.app-side .s-item {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 30px;
  padding: 0 7px;
  border-radius: 7px;
  font-size: 11px;
  color: var(--body);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
}

.app-side .s-item.on {
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 600;
}

.app-side .s-dot {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: #e2e8f2;
  flex: none;
}

.app-side .s-item.on .s-dot {
  background: var(--brand);
}

.app-main {
  padding: 18px;
}

.app-hi {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.app-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
}

.app-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}

.app-stat {
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 10px;
  background: #fff;
}

.app-stat em {
  display: block;
  font-style: normal;
  font-size: 10.5px;
  color: var(--muted);
}

.app-stat b {
  display: block;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 2px;
}

.app-block {
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: 12px;
  margin-top: 8px;
}

.app-block h6 {
  margin: 0 0 9px;
  font-size: 10.5px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.app-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.app-chips span {
  font-size: 10.5px;
  color: var(--ink-2);
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  padding: 3px 8px;
}

.app-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
}

.app-row i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: #eaeff7;
  flex: none;
}

.app-row s {
  display: block;
  height: 5px;
  border-radius: 3px;
  background: #eef1f6;
  text-decoration: none;
  flex: 1;
}

.app-row s.w60 {
  flex: 0 0 60%;
}

.app-row s.w40 {
  flex: 0 0 40%;
}

/* 浮动小卡片：只是静态装饰，不做漂浮动画 */
.hero-float {
  position: absolute;
  left: -28px;
  bottom: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-float .ok {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #eaf5ee;
  color: #2f7d4f;
  display: grid;
  place-items: center;
  flex: none;
}

.hero-float .ok svg {
  width: 14px;
  height: 14px;
}

.hero-float b {
  display: block;
  font-size: 12px;
  font-weight: 600;
}

.hero-float span {
  display: block;
  font-size: 10.5px;
  color: var(--muted);
}

/* ===================== 能力卡片 ===================== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 24px;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.card:hover {
  border-color: #cfdcee;
  box-shadow: var(--shadow);
}

.card-ico {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--brand-soft);
  color: var(--brand);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}

.card-ico svg {
  width: 21px;
  height: 21px;
}

.card h3 {
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--body);
  margin-top: 9px;
}

/* ===================== 下载区（动态） ===================== */
.dl {
  background: linear-gradient(180deg, #f7f9fd 0%, #f2f6fc 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.dl-main h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-top: 14px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.dl-main h2 small {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}

.dl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.dl-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dl-meta svg {
  width: 14px;
  height: 14px;
  color: #9aa4b4;
}

.dl-desc {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--body);
  margin-top: 16px;
  max-width: 560px;
}

.dl-md5 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 12px;
  color: var(--muted);
}

.dl-md5 code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 8px;
  letter-spacing: 0.02em;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dl-side {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  min-width: 236px;
}

.dl-side .btn-primary {
  height: 52px;
  font-size: 16px;
  border-radius: 12px;
}

.dl-note {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
}

.dl-alt {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
}

.dl-alt a {
  color: var(--brand);
  font-weight: 500;
}

/* 骨架屏：只在数据未到时占位，避免空白跳动 */
.sk {
  display: block;
  height: 14px;
  border-radius: 6px;
  background: linear-gradient(90deg, #e9edf4 25%, #f5f8fc 37%, #e9edf4 63%);
  background-size: 400% 100%;
  animation: sk 1.4s ease infinite;
}

.sk.lg {
  height: 26px;
  width: 190px;
  border-radius: 8px;
}

.sk.md {
  width: 260px;
}

.sk.sm {
  width: 140px;
}

@keyframes sk {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}

/* ===================== 产品优势 ===================== */
.adv {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 56px;
}

.adv-item {
  display: flex;
  gap: 16px;
  padding: 26px 0;
  border-top: 1px solid var(--line-soft);
}

.adv-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 7px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 2px;
}

.adv-item h3 {
  font-size: 16px;
  font-weight: 650;
}

.adv-item p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--body);
  margin-top: 6px;
}

/* ===================== 内页页头 ===================== */
.page-head {
  padding: 64px 0 8px;
  background: linear-gradient(180deg, #f8fafd 0%, #fff 100%);
}

.page-head .h1 {
  font-size: clamp(28px, 3.4vw, 42px);
}

.page-head .lead {
  max-width: 620px;
  margin-top: 14px;
  font-size: 16px;
}

.crumb {
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 16px;
}

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

.crumb a:hover {
  color: var(--brand);
}

/* ===================== 功能页 ===================== */
.frow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 64px 0;
  border-top: 1px solid var(--line-soft);
}

.frow:first-of-type {
  border-top: 0;
}

.frow.rev .ftext {
  order: 2;
}

.ftext .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ftext h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 10px;
}

.ftext p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--body);
  margin-top: 12px;
}

.flist {
  margin-top: 20px;
}

.flist li {
  display: flex;
  gap: 10px;
  font-size: 14.5px;
  color: var(--ink-2);
  padding: 7px 0;
}

.flist svg {
  width: 17px;
  height: 17px;
  color: var(--brand);
  flex: none;
  margin-top: 3px;
}

.shot {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.shot-bar {
  height: 34px;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 12px;
  border-bottom: 1px solid var(--line-soft);
  background: #fcfdff;
}

.shot-bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #e3e8f0;
}

.shot-body {
  padding: 16px;
  min-height: 236px;
}

/* 功能页底部固定下载条 */
.dlbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding: 11px 0;
}

.dlbar-in {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
}

.dlbar-txt {
  font-size: 14px;
  color: var(--body);
  min-width: 0;
}

.dlbar-txt b {
  color: var(--ink);
  font-weight: 600;
}

.dlbar-txt > span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

/* 版本号跟在品牌名后面，不能被上面那条 block 规则打断 */
.dlbar-txt b span {
  display: inline;
  font-size: inherit;
  color: inherit;
}

/* ===================== 更新日志 ===================== */
.ver-list {
  margin-top: 8px;
}

.ver {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 40px;
  padding: 30px 0;
  border-top: 1px solid var(--line-soft);
}

.ver:first-child {
  border-top: 0;
  padding-top: 20px;
}

.ver-v {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.ver-date {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
}

.badge-new {
  font-size: 10.5px;
  font-weight: 600;
  color: #1f6b45;
  background: #e9f6ef;
  border-radius: 999px;
  padding: 2px 8px;
  letter-spacing: 0.02em;
}

.ver-sum {
  font-size: 14.5px;
  color: var(--ink-2);
  font-weight: 500;
  line-height: 1.75;
}

.ver-notes {
  margin-top: 10px;
}

.ver-notes li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--body);
}

.ver-notes li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #c3cddd;
}

.ver-notes li + li {
  margin-top: 2px;
}

.ver-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
}

.ver-meta code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.pg {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease),
    background-color 0.15s var(--ease);
}

.pg:hover:not(:disabled) {
  border-color: #c6d2e4;
  color: var(--ink);
}

.pg.on {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.pg:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.pg-info {
  font-size: 12.5px;
  color: var(--muted);
  margin-left: 8px;
}

/* 空 / 错误状态 */
.empty {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  background: var(--bg-soft);
}

.empty b {
  display: block;
  color: var(--ink-2);
  font-size: 15px;
  margin-bottom: 6px;
}

.empty .btn {
  margin-top: 18px;
}

/* ===================== 关于 / 联系 ===================== */
.prose {
  max-width: 760px;
}

.prose p {
  font-size: 15.5px;
  line-height: 2;
  color: var(--body);
  margin-bottom: 18px;
}

.prose p:last-child {
  margin-bottom: 0;
}

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

.vals {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.val {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  background: #fff;
}

.val h3 {
  font-size: 16px;
  font-weight: 650;
  margin-top: 14px;
}

.val p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--body);
  margin-top: 8px;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.fact {
  background: #fff;
  padding: 24px 22px;
}

.fact b {
  display: block;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.fact span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.ctacts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ctact {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  background: #fff;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.ctact:hover {
  border-color: #cfdcee;
  box-shadow: var(--shadow);
}

.ctact .card-ico {
  margin-bottom: 16px;
}

.ctact h3 {
  font-size: 16px;
  font-weight: 650;
}

.ctact .v {
  font-size: 15px;
  color: var(--ink-2);
  margin-top: 8px;
  word-break: break-all;
}

.ctact p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.7;
}

a.v:hover {
  color: var(--brand);
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 30px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: center;
}

.panel h3 {
  font-size: 17px;
  font-weight: 650;
}

.panel p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--body);
  margin-top: 8px;
}

.panel .right {
  display: flex;
  justify-content: flex-end;
}

/* ===================== 文档页（隐私/协议） ===================== */
.doc {
  max-width: 780px;
  margin: 0 auto;
}

.doc h2 {
  font-size: 19px;
  font-weight: 650;
  margin: 34px 0 12px;
}

.doc h2:first-child {
  margin-top: 0;
}

.doc p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--body);
  margin-bottom: 12px;
}

.doc ul {
  margin: 0 0 14px;
}

.doc li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--body);
}

.doc li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 13px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #c3cddd;
}

.doc .upd {
  font-size: 13px;
  color: var(--muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 28px;
}

/* ===================== 页脚 ===================== */
.footer {
  background: #fbfcfe;
  border-top: 1px solid var(--line);
  padding: 60px 0 26px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}

.foot-brand p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  margin-top: 16px;
  max-width: 300px;
}

.foot-col h5 {
  margin: 0 0 14px;
  font-size: 12.5px;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.foot-col a {
  display: block;
  font-size: 13.5px;
  color: var(--body);
  padding: 5px 0;
  transition: color 0.15s var(--ease);
}

.foot-col a:hover {
  color: var(--brand);
}

.foot-col p {
  font-size: 13.5px;
  color: var(--body);
  line-height: 1.9;
}

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--muted);
}

.foot-bottom a {
  color: var(--muted);
}

.foot-bottom a:hover {
  color: var(--brand);
}

.foot-bottom .right {
  margin-left: auto;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

/* ===================== 响应式：平板 ===================== */
@media (max-width: 1199px) {
  :root {
    --container: 100%;
  }

  .hero {
    padding: 56px 0 72px;
  }

  .hero-grid {
    gap: 40px;
  }

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

  .frow {
    gap: 40px;
  }

  .adv {
    gap: 8px 40px;
  }

  .dl {
    padding: 34px 32px;
    gap: 28px;
  }

  .foot-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 32px;
  }

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

/* 导航在 900px 以下收成汉堡菜单 */
@media (max-width: 900px) {
  .nav-links,
  .nav-ver {
    display: none;
  }

  .nav-burger {
    display: flex;
  }

  .nav-in {
    gap: 16px;
    padding: 0 20px;
  }

  .nav-right .btn-ghost {
    display: none;
  }

  .sec {
    padding: 68px 0;
  }

  .sec-head {
    margin-bottom: 34px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-visual {
    max-width: 560px;
  }

  .hero .lead {
    max-width: none;
  }

  .frow {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 44px 0;
  }

  .frow.rev .ftext {
    order: 0;
  }

  .frow.rev .shot {
    order: 2;
  }

  .dl {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .dl-side {
    min-width: 0;
  }

  .dl-side .btn-primary {
    width: 100%;
  }

  .adv {
    grid-template-columns: 1fr;
  }

  .vals,
  .ctacts {
    grid-template-columns: 1fr;
  }

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

  .panel {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .panel .right {
    justify-content: flex-start;
  }

  .ver {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px 0;
  }

  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

/* ===================== 响应式：手机 ===================== */
@media (max-width: 767px) {
  body {
    font-size: 15px;
  }

  .wrap {
    padding: 0 18px;
  }

  .hero {
    padding: 40px 0 56px;
  }

  .hero::before {
    display: none;
  }

  .hero h1 {
    margin-top: 18px;
  }

  .h1 {
    font-size: 30px;
    letter-spacing: -0.02em;
  }

  .lead {
    font-size: 15.5px;
    line-height: 1.85;
    margin-top: 16px;
  }

  /* 触屏按钮：放大到 48px 以上 */
  .btn {
    height: 48px;
    padding: 0 20px;
    font-size: 15px;
  }

  .btn-sm {
    height: 40px;
  }

  .btn-lg {
    height: 52px;
    width: 100%;
    padding: 0 22px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-top: 26px;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .hero-ver {
    justify-content: center;
    margin-top: 14px;
  }

  .hero-points {
    gap: 8px 18px;
    margin-top: 24px;
    padding-top: 20px;
  }

  .app-body {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .app-side {
    display: none;
  }

  .app-main {
    padding: 14px;
  }

  .app-stats {
    gap: 6px;
  }

  .app-stat b {
    font-size: 15px;
  }

  .hero-float {
    display: none;
  }

  .sec {
    padding: 52px 0;
  }

  .sec-tight {
    padding: 40px 0;
  }

  .sec-head {
    margin-bottom: 28px;
  }

  .h2 {
    font-size: 23px;
  }

  .sec-head p {
    font-size: 14.5px;
    margin-top: 12px;
  }

  .cards {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .card {
    padding: 22px 20px;
  }

  .card-ico {
    width: 38px;
    height: 38px;
    margin-bottom: 14px;
  }

  .dl {
    padding: 26px 20px;
    border-radius: 16px;
  }

  .dl-main h2 {
    font-size: 24px;
    gap: 8px;
  }

  .dl-desc {
    font-size: 14px;
  }

  .dl-md5 {
    flex-wrap: wrap;
    gap: 6px;
  }

  .dl-md5 code {
    max-width: calc(100% - 40px);
  }

  .dl-side .btn-primary {
    height: 50px;
  }

  .adv-item {
    padding: 20px 0;
    gap: 14px;
  }

  .page-head {
    padding: 38px 0 6px;
  }

  .page-head .h1 {
    font-size: 24px;
    letter-spacing: -0.015em;
  }

  .frow {
    padding: 36px 0;
    gap: 22px;
  }

  .ftext h2 {
    font-size: 21px;
  }

  .shot-body {
    padding: 12px;
    min-height: 0;
  }

  .ver-v {
    font-size: 18px;
  }

  .ver {
    padding: 20px 0;
    gap: 10px;
  }

  .pager .pg {
    min-width: 40px;
    height: 40px;
  }

  .pg-info {
    width: 100%;
    text-align: center;
    margin: 8px 0 0;
  }

  .vals,
  .ctacts {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .facts {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .val,
  .ctact {
    padding: 22px 20px;
  }

  .panel {
    padding: 22px 20px;
  }

  .foot-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer {
    padding: 44px 0 22px;
  }

  .foot-bottom {
    margin-top: 30px;
    font-size: 12px;
  }

  .foot-bottom .right {
    margin-left: 0;
    gap: 14px;
  }

  .dlbar {
    padding: 9px 0;
  }

  .dlbar-in {
    gap: 10px;
  }

  .dlbar-txt {
    font-size: 13px;
  }

  .dlbar-txt > span {
    font-size: 11px;
  }

  .dlbar .btn {
    height: 44px;
    padding: 0 16px;
    font-size: 14px;
    flex: none;
  }

  body.has-dlbar {
    padding-bottom: 72px;
  }
}

/* 小屏（<380px）再压一档，避免出现横向滚动 */
@media (max-width: 379px) {
  .h1 {
    font-size: 26px;
  }

  .dl-main h2 {
    font-size: 21px;
  }

  .brand-sub {
    display: none;
  }
}

/* 尊重系统的"减少动态效果"设置 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ===================== 功能页截图用的小组件 ===================== */
.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.mini {
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 10px;
  background: #fff;
}

.mini em {
  display: block;
  font-style: normal;
  font-size: 10px;
  color: var(--muted);
}

.mini b {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.split-pane {
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 12px;
  background: #fff;
  min-height: 190px;
}

.split-pane h6 {
  margin: 0 0 10px;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.ln {
  height: 6px;
  border-radius: 3px;
  background: #eef1f6;
  margin-bottom: 8px;
}

.ln.w70 { width: 70%; }
.ln.w45 { width: 45%; }
.ln.w85 { width: 85%; }

.ln.head {
  height: 12px;
  width: 55%;
  background: #dfe6f2;
  margin-bottom: 12px;
}

.tree {
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 8px;
  background: #fff;
}

.tree-row {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 8px;
  border-radius: 6px;
  font-size: 11.5px;
  color: var(--ink-2);
}

.tree-row.on {
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 600;
}

.tree-row.sub {
  padding-left: 26px;
  color: var(--body);
}

.tree-row .t-ico {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: #dfe6f2;
  flex: none;
}

.tree-row.on .t-ico {
  background: var(--brand);
}

.lockbox {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--brand-line);
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 9px;
  padding: 10px 12px;
  font-size: 11.5px;
  font-weight: 600;
  margin-bottom: 10px;
}

.lockbox svg {
  width: 14px;
  height: 14px;
  flex: none;
}

.sbox {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0 12px;
  color: var(--muted);
  font-size: 12px;
  background: #fff;
  margin-bottom: 12px;
}

.sbox svg {
  width: 14px;
  height: 14px;
  color: #9aa4b4;
  flex: none;
}

.sgroup {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin: 10px 0 6px;
}

.srow {
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 9px 11px;
  background: #fff;
  margin-bottom: 6px;
}

.srow b {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-2);
}

.srow span {
  display: block;
  font-size: 10.5px;
  color: var(--muted);
  margin-top: 2px;
}

/* 首页下载区：数据未到时用骨架条占位（文字本身仍留在 DOM 里，避免布局跳动） */
.dl[data-state="loading"] [data-ver],
.dl[data-state="loading"] [data-ver-date],
.dl[data-state="loading"] [data-ver-size] {
  color: transparent;
  border-radius: 6px;
  background: linear-gradient(90deg, #e4e9f2 25%, #f2f6fc 37%, #e4e9f2 63%);
  background-size: 400% 100%;
  animation: sk 1.4s ease infinite;
}

.dl[data-state="loading"] .dl-desc {
  color: transparent;
  height: 15px;
  max-width: 460px;
  overflow: hidden;
  border-radius: 6px;
  background: linear-gradient(90deg, #e4e9f2 25%, #f2f6fc 37%, #e4e9f2 63%);
  background-size: 400% 100%;
  animation: sk 1.4s ease infinite;
}

.dl[data-state="loading"] [data-ver-state]::after {
  content: "";
}