/* ============================================================
   HyDesk — 分布式架构的远程控制
   Design tokens
   ============================================================ */
:root {
  --blue: #1a4fe0;
  --blue-deep: #123ec4;
  --cyan: #00c6d7;
  --ink: #0b1220;
  --body: #4a5568;
  --body-soft: #5a6474;
  --muted: #6b7789;
  --muted-2: #8a93a3;
  --line: #eaeff6;
  --line-soft: #e3e8f0;
  --surface: #f5f7fa;
  --surface-blue: #eef3ff;
  --navy: #071324;
  --green: #12a67b;

  --radius-card: 16px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 2px rgba(11, 18, 32, 0.04);
  --shadow-lift: 0 18px 40px -20px rgba(11, 18, 32, 0.22);

  --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "Manrope", "Noto Sans SC", system-ui, sans-serif;
}

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

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

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}

.shell {
  width: min(1200px, calc(100% - 80px));
  margin-inline: auto;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 12px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease,
    color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 10px 24px -6px rgba(26, 79, 224, 0.42);
}
.btn-primary:hover {
  background: var(--blue-deep);
  transform: translateY(-1px);
  box-shadow: 0 14px 30px -8px rgba(26, 79, 224, 0.5);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid #dbe1ea;
}
.btn-ghost:hover {
  border-color: #bcc7d6;
  background: #fcfdff;
  transform: translateY(-1px);
}

.btn-lg { padding: 16px 26px; font-size: 16px; }
.btn-sm { padding: 10px 20px; font-size: 15px; border-radius: 10px; }

.btn-light {
  background: #fff;
  color: var(--ink);
  padding: 15px 26px;
  font-size: 15px;
}
.btn-light:hover { background: #eef3ff; color: var(--blue); transform: translateY(-1px); }

.text-link {
  display: inline-block;
  color: var(--blue);
  font-size: 14px;
  font-weight: 500;
  transition: gap 0.2s ease, opacity 0.2s ease;
}
.text-link:hover { opacity: 0.72; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px -20px rgba(11, 18, 32, 0.4);
}

.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.brand-mark {
  display: block;
  border-radius: 8px;
}
.brand-row .brand-mark { border-radius: 7px; }
.brand-word {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: #3d4a5c;
  transition: color 0.18s ease;
  position: relative;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -7px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: right 0.24s ease;
}
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { right: 0; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  flex: none;
}
/* 移动端菜单内的购买入口，桌面不显示 */
.main-nav .nav-buy-m { display: none; }

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.menu-toggle span {
  display: block;
  width: 16px;
  height: 1.6px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f4f9ff 100%);
  border-bottom: 1px solid #f0f4fa;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 90px 0 100px;
}

.hero-copy { width: 552px; flex: none; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--surface-blue);
  border: 1px solid #d3e0ff;
  color: var(--blue);
  font-size: 13px;
  font-weight: 500;
}
.badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 198, 215, 0.18);
}

.hero h1 {
  margin-top: 26px;
  font-size: 58px;
  line-height: 1.36;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.hero-sub {
  margin-top: 24px;
  font-size: 17px;
  line-height: 30px;
  color: var(--body);
  max-width: 520px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 34px;
  font-size: 13px;
  color: var(--muted);
}
.hero-meta li { display: inline-flex; align-items: center; gap: 6px; }

/* ---- 产品界面截图 ---- */
.mock-shot {
  width: 584px;
  flex: none;
  margin-left: auto;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #dfe5ee;
  box-shadow: 0 30px 64px -18px rgba(13, 28, 64, 0.35);
  line-height: 0;
}
.mock-shot img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---- 首屏虚拟界面：屏幕墙 + 群控 ---- */
.wall-shot {
  width: 584px;
  background: #0b1424;
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 34px 72px -22px rgba(8, 20, 44, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.04);
  line-height: 1.3;
  container-type: inline-size;
}

.wall {
  --w-line: rgba(255, 255, 255, 0.09);
  --w-text: #e6eefb;
  --w-mute: #8194b2;
  --w-blue: #2f6bff;
  color: var(--w-text);
  font-family: "Manrope", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.2;
  background: radial-gradient(120% 100% at 100% 0%, #16243c 0%, #0b1424 58%);
}

/* 顶部栏 */
.wall-bar {
  display: flex;
  align-items: center;
  gap: 1.6cqw;
  height: 7.6cqw;
  padding: 0 3.2cqw;
  border-bottom: 1px solid var(--w-line);
  background: rgba(255, 255, 255, 0.02);
}
.wall-logo {
  display: block;
  width: 4.2cqw;
  height: 4.2cqw;
  flex: none;
  border-radius: 1.1cqw;
  overflow: hidden;
  box-shadow: 0 0.4cqw 1.2cqw -0.2cqw rgba(47, 107, 255, 0.6);
}
.wall-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.wall-name {
  font-size: 2.05cqw;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.wall-tabs {
  display: flex;
  gap: 0.6cqw;
  margin-left: 1cqw;
  font-size: 1.85cqw;
  color: var(--w-mute);
}
.wall-tabs i {
  font-style: normal;
  padding: 0.55cqw 1.2cqw;
  border-radius: 0.7cqw;
}
.wall-tabs i.on {
  color: #fff;
  background: rgba(47, 107, 255, 0.22);
  box-shadow: inset 0 0 0 1px rgba(79, 134, 255, 0.45);
}
.wall-live {
  display: flex;
  align-items: center;
  gap: 0.7cqw;
  margin-left: auto;
  font-size: 1.8cqw;
  color: #9fb2cf;
}
.wall-live i {
  width: 1cqw;
  height: 1cqw;
  border-radius: 50%;
  background: #22d18d;
  box-shadow: 0 0 0 0.45cqw rgba(34, 209, 141, 0.18);
}
.wall-user {
  display: grid;
  place-items: center;
  width: 4cqw;
  height: 4cqw;
  border-radius: 50%;
  font-size: 1.7cqw;
  font-weight: 700;
  color: #dbe8ff;
  background: linear-gradient(140deg, #3d7bff, #1a3f9e);
}

/* 主体 */
.wall-body { display: flex; }

.wall-side {
  width: 26cqw;
  flex: none;
  padding: 2.8cqw 2cqw;
  border-right: 1px solid var(--w-line);
}
.wall-cap {
  margin: 0 0 1.2cqw;
  font-size: 1.6cqw;
  letter-spacing: 0.14em;
  color: #64789a;
}
.wall-groups + .wall-cap { margin-top: 2.8cqw; }
.wall-groups,
.wall-state {
  margin: 0;
  padding: 0;
  list-style: none;
}
.wall-groups li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15cqw 1.2cqw;
  border-radius: 0.8cqw;
  font-size: 1.88cqw;
  color: #b8c8e0;
}
.wall-groups li b {
  font-size: 1.7cqw;
  font-weight: 600;
  color: #6f83a3;
}
.wall-groups li.on {
  color: #fff;
  background: rgba(47, 107, 255, 0.16);
  box-shadow: inset 0 0 0 1px rgba(79, 134, 255, 0.3);
}
.wall-groups li.on b { color: #a8c3ff; }

.wall-state {
  display: flex;
  flex-direction: column;
  gap: 1.1cqw;
  font-size: 1.75cqw;
  color: #93a6c2;
}
.wall-state li { display: flex; align-items: center; gap: 0.8cqw; }
.wall-state b { margin-left: auto; font-weight: 600; color: #c7d6ec; }
.wall-state i {
  width: 0.9cqw;
  height: 0.9cqw;
  border-radius: 50%;
}
.wall-state i.ok { background: #22d18d; }
.wall-state i.busy { background: #4f86ff; }
.wall-state i.off { background: #4b5b74; }

.wall-main {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: column;
  padding: 2.4cqw;
}
.wall-tool {
  display: flex;
  align-items: center;
  gap: 1.1cqw;
  margin-bottom: 1.8cqw;
}
.wall-search {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 0.8cqw;
  height: 4.6cqw;
  padding: 0 1.4cqw;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1cqw;
  background: rgba(255, 255, 255, 0.05);
  font-size: 1.75cqw;
  color: #6f83a3;
}
.wall-search i {
  position: relative;
  flex: none;
  width: 1.4cqw;
  height: 1.4cqw;
  border: 0.22cqw solid #62779a;
  border-radius: 50%;
}
.wall-search i::after {
  content: "";
  position: absolute;
  right: -0.6cqw;
  bottom: -0.3cqw;
  width: 0.8cqw;
  height: 0.22cqw;
  border-radius: 2px;
  background: #62779a;
  transform: rotate(45deg);
}
.wall-sel {
  display: flex;
  flex: none;
  align-items: center;
  height: 4.6cqw;
  padding: 0 1.3cqw;
  border: 1px solid rgba(79, 134, 255, 0.32);
  border-radius: 1cqw;
  background: rgba(47, 107, 255, 0.16);
  font-size: 1.75cqw;
  color: #cfe0ff;
  white-space: nowrap;
}
.wall-sel b { margin: 0 0.35cqw; color: #fff; }
.wall-view {
  display: grid;
  grid-template-columns: repeat(2, 0.85cqw);
  gap: 0.4cqw;
  padding: 0 0.3cqw;
}
.wall-view i {
  width: 0.85cqw;
  height: 0.85cqw;
  border-radius: 0.2cqw;
  background: #43566f;
}

/* 屏幕墙 */
.wall-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5cqw;
}
.wall-tile {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 0.9cqw;
  background: #0e1a2c;
}
.scr {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55cqw;
  padding: 1.1cqw 1.1cqw 4cqw;
  background: #e9eff8;
}
.scr-h {
  height: 1.5cqw;
  border-radius: 0.3cqw;
  background: #c6d5e9;
}
.scr-l {
  height: 0.75cqw;
  border-radius: 0.4cqw;
  background: #d9e4f2;
}
.scr-l.w5 { width: 50%; }
.scr-l.w6 { width: 62%; }
.scr-l.w7 { width: 72%; }
.scr-l.w8 { width: 84%; }
.scr-l.w9 { width: 94%; }
.scr-b {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: 0.4cqw;
  background: linear-gradient(180deg, #dde9fa, #cadef7);
}
.scr-b::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 0;
  height: 56%;
  background: repeating-linear-gradient(
    90deg,
    #82aaf1 0 12%,
    transparent 12% 22%
  );
}
/* 安卓画面：纵向画幅，两侧留黑边 */
.scr-phone {
  padding-left: 21%;
  padding-right: 21%;
  background: #0f1c2f;
}
.scr-phone > * { flex: none; }
.scr-phone .scr-b { flex: 1; }

.wall-tile.is-sel {
  border-color: rgba(88, 140, 255, 0.85);
  box-shadow: 0 0 0 0.35cqw rgba(47, 107, 255, 0.22),
    0 1cqw 2.4cqw -1.2cqw rgba(47, 107, 255, 0.8);
}
.wall-tile.is-idle .scr {
  filter: grayscale(1) brightness(0.6);
  opacity: 0.7;
}
.wall-check {
  position: absolute;
  top: 0.9cqw;
  right: 0.9cqw;
  z-index: 3;
  width: 2.3cqw;
  height: 2.3cqw;
  border-radius: 50%;
  background: #2f6bff;
  box-shadow: 0 0 0 0.3cqw rgba(47, 107, 255, 0.3);
}
.wall-check::after {
  content: "";
  position: absolute;
  left: 0.66cqw;
  top: 0.72cqw;
  width: 1.05cqw;
  height: 0.5cqw;
  border-left: 0.28cqw solid #fff;
  border-bottom: 0.28cqw solid #fff;
  transform: rotate(-45deg);
}
.wall-cur {
  position: absolute;
  left: 53%;
  top: 40%;
  z-index: 3;
  width: 1.5cqw;
  height: 1.5cqw;
  border-radius: 50% 50% 50% 0;
  background: #2f6bff;
  transform: rotate(-45deg);
  box-shadow: 0 0.2cqw 0.7cqw rgba(8, 24, 62, 0.5);
}
.wall-cur::after {
  content: "";
  position: absolute;
  inset: -0.55cqw;
  border: 0.18cqw solid rgba(88, 140, 255, 0.9);
  border-radius: 50%;
  animation: wallPulse 2.4s ease-out infinite;
}
@keyframes wallPulse {
  0% { transform: scale(0.55); opacity: 0.95; }
  70%, 100% { transform: scale(1.75); opacity: 0; }
}
.wall-tag {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5cqw;
  height: 4cqw;
  padding: 0 1.1cqw;
  font-size: 1.5cqw;
  color: #e8f0ff;
  background: linear-gradient(
    180deg,
    rgba(6, 14, 28, 0) 0%,
    rgba(6, 14, 28, 0.78) 52%,
    rgba(6, 14, 28, 0.94) 100%
  );
}
.wall-tag i {
  flex: none;
  padding: 0.15cqw 0.55cqw;
  border-radius: 0.4cqw;
  font-style: normal;
  font-size: 1.3cqw;
  color: #9dc0ff;
  background: rgba(47, 107, 255, 0.24);
}

/* 群控工具条 */
.wall-actions {
  display: flex;
  align-items: center;
  gap: 1.1cqw;
  margin-top: 2cqw;
}
.wall-act {
  display: flex;
  flex: none;
  align-items: center;
  height: 5cqw;
  padding: 0 1.8cqw;
  border-radius: 0.9cqw;
  font-size: 1.8cqw;
  color: #c2d1e6;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.09);
}
.wall-act.on {
  color: #fff;
  background: linear-gradient(180deg, #3d7bff, #2b5ff0);
  box-shadow: 0 0.7cqw 1.8cqw -0.7cqw rgba(47, 107, 255, 0.9),
    inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

/* ============================================================
   Shared section bits
   ============================================================ */
.section { padding: 100px 0; }

/* 锚点定位避开吸顶导航 */
section[id],
footer[id] { scroll-margin-top: 92px; }

.eyebrow {
  display: block;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.2px;
  color: var(--blue);
  text-transform: uppercase;
}

.section-head h2 {
  margin-top: 18px;
  font-size: 40px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.section-head h2 + p {
  margin-top: 16px;
  font-size: 16px;
  line-height: 28px;
  color: var(--body-soft);
}

.section-head.split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
}
.section-head.split .head-copy { max-width: 640px; }
.section-head.split .head-copy p { max-width: 560px; }

.section-head.centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.section-head.centered p { max-width: 680px; }

.stat-row {
  display: flex;
  gap: 44px;
  flex: none;
  padding-bottom: 4px;
}
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat strong {
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stat span { font-size: 13px; color: var(--muted); }

.card-grid {
  display: grid;
  gap: 16px;
  margin-top: 52px;
}
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ============================================================
   Capability
   ============================================================ */
.capability { background: var(--surface); }

.feature-card,
.tip-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.feature-card:hover,
.tip-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: #d7dfeb;
}

.feature-card { padding: 26px; }
.icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface-blue);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
}
.icon-wrap.sm {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #edf2fb;
  margin-bottom: 12px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.feature-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 24px;
  color: var(--body-soft);
}

/* ---- Tips ---- */
.tips { margin-top: 84px; }
.tips-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}
.tips-head h3 {
  margin-top: 12px;
  font-size: 28px;
  line-height: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.tips .card-grid {
  margin-top: 32px;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.tip-card { grid-column: span 2; padding: 24px; }
.tip-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.tip-card p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--body-soft);
}
.tip-card.wide { grid-column: span 3; }

/* ============================================================
   Versions / comparison table
   ============================================================ */
.versions { background: #fff; }

.table {
  margin-top: 48px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
}
.t-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  min-height: 64px;
  border-top: 1px solid #eff3f8;
}
.t-row:first-child { border-top: 0; }
.t-row:not(.t-head):hover { background: #fcfdff; }

.t-cell {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 28px;
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}
.t-cell.label {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}
.t-cell.muted { color: var(--muted-2); }
.t-cell.num { font-family: var(--font-num); font-weight: 500; }

/* 两版均支持的条目 */
.t-cell.check { color: var(--ink); }
.t-cell.check::before {
  content: "";
  flex: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: rgba(18, 166, 123, 0.13);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.2 8.4l2.6 2.6 5-5.5' fill='none' stroke='%2312A67B' stroke-width='1.9' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 16px 16px;
}
.t-cell.check .t-note { color: var(--body); }

.t-head { background: #f7f9fd; }
.t-head .t-cell {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.t-head .t-cell:nth-child(2) {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.t-cell.pro {
  background: #f1f6ff;
  color: var(--ink);
}
.t-head .t-cell.pro {
  font-size: 16px;
  font-weight: 700;
  color: var(--blue);
}
.t-cell.pro.num { font-weight: 500; }

/* 表内购买链接行 */
.t-row-buy { background: #f6f9ff; }
.t-row-buy .t-cell { align-items: center; }
.t-buy {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  border: 1.5px solid var(--blue);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue);
  background: #fff;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.t-buy:hover { background: var(--blue); color: #fff; transform: translateY(-1px); }
.t-buy-pro { background: var(--blue); color: #fff; }
.t-buy-pro:hover { background: #1440c4; border-color: #1440c4; }

/* 表格下方购买入口 */
.buy-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 16px;
  padding: 20px 28px;
  border: 1px solid #d9e5ff;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, #f5f9ff 0%, #eef4ff 100%);
}
.buy-band-copy { margin: 0; }
.buy-band-copy strong {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}
.buy-band-copy span {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--muted);
}
.buy-band-actions {
  display: flex;
  flex: none;
  gap: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-family: var(--font-cn);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0;
}

/* ============================================================
   Download zone
   ============================================================ */
.download { background: var(--surface); }

.dl-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.dl-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.dl-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: #d7dfeb;
}

.dl-platform {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.os-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--surface-blue);
  display: grid;
  place-items: center;
  flex: none;
}
.dl-platform h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.dl-platform p {
  margin-top: 2px;
  font-size: 13px;
  color: var(--muted);
}

.dl-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}
.dl-item + .dl-item { border-top: 1px solid #f0f3f8; }

.dl-version {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.dl-meta {
  display: block;
  margin-top: 4px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.btn-dl {
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 14px;
  flex: none;
}

/* 员工端共用卡：整行占满，两个平台按钮并排 */
.dl-card-wide { grid-column: 1 / -1; }
.dl-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.os-icon-pair {
  display: flex;
  flex-direction: row;
  gap: 3px;
  align-items: center;
  justify-content: center;
}

/* 安卓报毒提示 */
.dl-warn {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 16px;
  padding: 11px 13px;
  border: 1px solid #f2d793;
  border-radius: 10px;
  background: linear-gradient(180deg, #fdf1cf 0%, #fbeac0 100%);
  font-size: 12.5px;
  line-height: 19px;
  color: #7c5407;
}
.dl-warn svg { flex: none; margin-top: 1.5px; }
.dl-warn strong { font-weight: 700; color: #7a4f06; }

.dl-foot {
  margin-top: 28px;
  text-align: center;
  font-size: 13px;
  line-height: 24px;
  color: var(--muted-2);
}
.dl-foot a {
  color: var(--blue);
  font-weight: 500;
}
.dl-foot a:hover { opacity: 0.72; }

/* ============================================================
   Install video
   ============================================================ */
.install { background: linear-gradient(180deg, var(--surface) 0%, #fff 58%); }

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 44px;
}

.video-item h4 {
  margin-top: 16px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}
.video-item > p {
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.video-card {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: #071324;
  border: 1px solid #dbe3ef;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.video-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}
.video-el {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  background: #071324;
}
.video-scrim {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(7, 19, 36, 0.18) 0%,
    rgba(7, 19, 36, 0.08) 46%,
    rgba(7, 19, 36, 0.58) 100%
  );
  transition: opacity 0.24s ease;
}
.video-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #fff;
  color: var(--blue);
  display: grid;
  place-items: center;
  padding-left: 3px;
  box-shadow: 0 14px 32px -10px rgba(7, 19, 36, 0.6);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.video-card:hover .video-play { transform: translate(-50%, -50%) scale(1.06); }

.video-dur {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(7, 19, 36, 0.6);
  font-family: var(--font-num);
  font-size: 11.5px;
  font-weight: 600;
  color: #d6e2f4;
  pointer-events: none;
}

.video-card.is-playing { cursor: default; }
.video-card.is-playing:hover { transform: none; box-shadow: var(--shadow-card); }
.video-card.is-playing .video-play,
.video-card.is-playing .video-scrim,
.video-card.is-playing .video-dur { opacity: 0; pointer-events: none; }

.video-tip {
  position: absolute;
  left: 50%;
  bottom: 46px;
  transform: translateX(-50%);
  margin: 0;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(7, 19, 36, 0.84);
  border: 1px solid rgba(140, 170, 225, 0.32);
  font-size: 12px;
  line-height: 1.4;
  color: #dbe6f7;
  white-space: nowrap;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: #fff; }
.faq-inner {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}
.faq-copy { width: 380px; flex: none; }
.faq-copy h2 {
  margin-top: 18px;
  font-size: 34px;
  line-height: 48px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.faq-copy > p {
  margin-top: 16px;
  font-size: 15px;
  line-height: 26px;
  color: var(--body-soft);
}
.faq-copy > .text-link { margin-top: 16px; }

.support-card {
  margin-top: 36px;
  padding: 20px 22px;
  border-radius: 14px;
  background: #f4f8ff;
  border: 1px solid #d3e2ff;
}
.support-card h5 { font-size: 15px; font-weight: 600; color: var(--ink); }
.support-card p {
  margin: 8px 0 10px;
  font-size: 13px;
  line-height: 22px;
  color: var(--body);
}

.faq-list { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 10px; }

.faq-item {
  border: 1px solid #edf1f6;
  border-radius: 14px;
  background: #fbfcfe;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.faq-item:hover { border-color: #dfe6f0; }
.faq-item.is-open { background: #fff; border-color: #d7e2f3; }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.faq-q .plus {
  flex: none;
  color: var(--muted);
  transition: transform 0.25s ease, color 0.2s ease;
}
.faq-item.is-open .plus { transform: rotate(45deg); color: var(--blue); }

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}
.faq-a > p {
  overflow: hidden;
  margin: 0 24px;
  font-size: 14px;
  line-height: 26px;
  color: var(--body-soft);
}
.faq-item.is-open .faq-a { grid-template-rows: 1fr; }
.faq-item.is-open .faq-a > p { margin-bottom: 22px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--navy); color: #fff; }

.footer-band { padding: 78px 0; }
.band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.band-copy h2 {
  font-size: 32px;
  line-height: 46px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.band-copy p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 24px;
  color: #8fa6c9;
}
.band-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: none;
}
.band-link {
  font-size: 14px;
  font-weight: 500;
  color: #8fa6c9;
  transition: color 0.18s ease;
}
.band-link:hover { color: #fff; }

.footer-divider { height: 1px; background: #16243b; }

.footer-mid {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding: 56px 0;
}
.footer-brand { width: 340px; flex: none; }
.brand-row { display: inline-flex; align-items: center; gap: 10px; }
.footer-brand .brand-word { color: #fff; font-size: 20px; }
.tagline {
  margin-top: 16px;
  width: 300px;
  max-width: 100%;
  font-size: 13px;
  line-height: 24px;
  color: #7e93b3;
}
.contact {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 500;
  color: #7e93b3;
  transition: color 0.18s ease;
}
.contact:hover { color: #fff; }

.footer-links { display: flex; gap: 72px; }
.link-col { display: flex; flex-direction: column; gap: 12px; }
.link-col h6 {
  font-size: 13px;
  font-weight: 500;
  color: #8fa6c9;
  margin-bottom: 2px;
}
.link-col a {
  font-size: 13px;
  color: #b8c7dc;
  transition: color 0.18s ease;
  width: fit-content;
}
.link-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  font-size: 12px;
  color: #6c7e9b;
}

/* ============================================================
   Scroll reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.is-in { opacity: 1; transform: none; }

@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;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1320px) {
  .hero-inner { gap: 44px; }
  .mock-shot { width: 500px; }
  .hero-copy { width: 500px; }
  .hero h1 { font-size: 50px; }
  .section-head h2 { font-size: 36px; }
  .section-head.split { gap: 32px; }
  .stat-row { gap: 32px; }
}

@media (max-width: 1140px) {
  .shell { width: min(1200px, calc(100% - 56px)); }
  .hero-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 48px;
    padding: 64px 0 72px;
  }
  .hero-copy { width: 100%; max-width: 620px; }
  .mock-shot { margin-left: 0; width: 100%; max-width: 584px; }
  .section { padding: 76px 0; }
  .section-head.split { flex-direction: column; align-items: flex-start; }
  .section-head.split .head-copy { max-width: 100%; }
  .stat-row { gap: 40px; }
  .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tips .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tip-card, .tip-card.wide { grid-column: span 1; }
  .faq-inner { gap: 48px; }
  .faq-copy { width: 320px; }
  .footer-links { gap: 48px; }
}

@media (max-width: 900px) {
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 28px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px -22px rgba(11, 18, 32, 0.4);
    display: none;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 10px 0; width: 100%; }
  .main-nav a::after { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-actions { gap: 14px; }
  .main-nav .nav-buy-m {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--blue);
    font-weight: 500;
  }
  .header-inner { position: relative; }

  .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .faq-inner { flex-direction: column; }
  .faq-copy { width: 100%; }
  .band-inner { flex-direction: column; align-items: flex-start; gap: 28px; }
  .footer-mid { flex-direction: column; gap: 40px; }
  .footer-brand { width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 680px) {
  .shell { width: calc(100% - 40px); }
  body { font-size: 15px; }

  .hero h1 { font-size: 34px; line-height: 1.42; }
  .hero-sub { font-size: 15px; line-height: 26px; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
  .hero-meta { flex-wrap: wrap; gap: 10px 18px; }

  .mock-shot { border-radius: 14px; }

  .section { padding: 60px 0; }
  .section-head h2 { font-size: 27px; line-height: 1.44; margin-top: 14px; }
  .section-head h2 + p { font-size: 15px; line-height: 26px; }
  .tips-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .tips-head h3 { font-size: 22px; line-height: 32px; }
  .tips { margin-top: 56px; }

  .cols-4, .cols-3 { grid-template-columns: 1fr; }
  .tips .card-grid { grid-template-columns: 1fr; }
  .tip-card, .tip-card.wide { grid-column: span 1; }
  .card-grid { margin-top: 32px; }
  .feature-card, .tip-card { padding: 22px; }

  .stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .stat strong { font-size: 24px; }
  .stat span { font-size: 11px; line-height: 1.5; }

  .table { margin-top: 32px; }
  .t-row { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 1fr); }
  .t-cell { padding: 14px 12px; font-size: 12px; }
  .t-cell.label { font-size: 13px; }
  .t-cell.check { gap: 6px; }
  .t-cell.check .t-note { display: none; }
  .t-buy { padding: 7px 10px; font-size: 12px; gap: 3px; }
  .buy-band {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
  }
  .buy-band-actions { width: 100%; }
  .buy-band-actions .btn { flex: 1 1 0; justify-content: center; }
  .t-head .t-cell:nth-child(2), .t-head .t-cell.pro { font-size: 13px; }
  .t-head .t-cell.pro { flex-wrap: wrap; gap: 4px; }
  .pill { font-size: 9px; padding: 2px 6px; }

  .dl-grid { grid-template-columns: 1fr; }
  .dl-card { padding: 24px; }
  .dl-item { flex-wrap: wrap; }
  .dl-info { min-width: 0; }
  .dl-meta { white-space: normal; }
  .dl-card-wide { grid-column: auto; }
  .dl-actions { width: 100%; }
  .dl-actions .btn-dl { flex: 1 1 0; }

  .video-grid { grid-template-columns: 1fr; gap: 26px; }
  .video-card { border-radius: 14px; }
  .video-play { width: 52px; height: 52px; }
  .video-item h4 { font-size: 15px; margin-top: 14px; }
  .video-item > p { font-size: 12.5px; }

  .faq-copy h2 { font-size: 26px; line-height: 38px; }
  .faq-q { padding: 18px; font-size: 15px; }
  .faq-a > p { margin: 0 18px; font-size: 13.5px; line-height: 24px; }
  .faq-item.is-open .faq-a > p { margin-bottom: 18px; }

  .footer-band { padding: 52px 0; }
  .band-copy h2 { font-size: 24px; line-height: 36px; }
  .band-actions { flex-direction: column; align-items: flex-start; gap: 14px; width: 100%; }
  .band-actions .btn { width: 100%; }
  .footer-mid { padding: 40px 0; }
  .footer-links { flex-wrap: wrap; gap: 32px 48px; }
  .footer-bottom { padding: 20px 0; }
}