/* =============================================================
   WX工具箱 官方网站 · 样式表
   风格：深空蓝科技风（贴合 WXCMG 品牌蓝），无任何构建依赖
   ============================================================= */

/* ---------------- 1. 设计变量 ---------------- */
:root {
  --bg: #050b18;
  --bg-soft: #071224;
  --panel: rgba(14, 30, 58, 0.55);
  --panel-2: rgba(9, 20, 40, 0.62);
  --line: rgba(120, 180, 255, 0.14);
  --line-strong: rgba(120, 180, 255, 0.28);
  --text: #e8f1ff;
  --text-2: #a8bcd9;
  --text-3: #7288a8;
  --brand: #1e7be8;
  --brand-2: #29abe2;
  --cyan: #4fd1ff;
  --cyan-soft: #7fd8ff;
  --ok: #35d07f;
  --warn: #ffb020;
  --danger: #ff6b6b;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --max: 1200px;
  --r-lg: 18px;
  --r-md: 14px;
  --r-sm: 10px;
  --shadow-card: 0 24px 50px -26px rgba(10, 90, 180, 0.55);
}

/* ---------------- 2. 基础 ---------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(41, 171, 226, 0.12);
  border: 1px solid rgba(41, 171, 226, 0.22);
  color: var(--cyan-soft);
  white-space: nowrap;
}
::selection { background: rgba(41, 171, 226, 0.35); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #050b18; }
::-webkit-scrollbar-thumb { background: #16335c; border-radius: 8px; border: 2px solid #050b18; }
::-webkit-scrollbar-thumb:hover { background: #1f4a80; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 880px; }

/* 矢量图标统一描边 */
.ic {
  width: 18px; height: 18px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ---------------- 3. 背景层 ---------------- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: var(--bg); }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(120, 180, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 180, 255, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.g1 { width: 720px; height: 720px; top: -280px; left: -120px; background: radial-gradient(circle, rgba(30, 123, 232, 0.55), transparent 70%); animation: drift 18s ease-in-out infinite; }
.g2 { width: 620px; height: 620px; top: 160px; right: -200px; background: radial-gradient(circle, rgba(41, 171, 226, 0.38), transparent 70%); animation: drift 22s ease-in-out infinite reverse; }
.g3 { width: 900px; height: 900px; bottom: -420px; left: 22%; background: radial-gradient(circle, rgba(23, 78, 170, 0.35), transparent 70%); animation: drift 26s ease-in-out infinite; }
@keyframes drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(40px, 30px, 0) scale(1.06); }
}
#particles { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.6; }

.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 60;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
  box-shadow: 0 0 12px rgba(41, 171, 226, 0.8);
}

/* ---------------- 4. 导航 ---------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 11, 24, 0.86);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 26px; height: 74px; }
.nav.scrolled .nav-inner { height: 66px; transition: height 0.3s; }

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { width: 38px; height: 38px; object-fit: contain; filter: drop-shadow(0 0 12px rgba(41, 171, 226, 0.45)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 16.5px; letter-spacing: 0.01em; }
.brand-text small { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.22em; color: var(--text-3); }

.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; justify-content: center; }
.nav-links a {
  position: relative;
  padding: 8px 13px; border-radius: 8px;
  font-size: 14px; color: var(--text-2);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
.nav-links a.active { color: var(--cyan); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 1px;
  width: 16px; height: 2px; border-radius: 2px; margin-left: -8px;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
  box-shadow: 0 0 10px rgba(41, 171, 226, 0.9);
}
.nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--line-strong); background: rgba(255, 255, 255, 0.03);
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.nav-toggle span { display: block; width: 16px; height: 1.6px; background: var(--text-2); border-radius: 2px; transition: 0.25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

/* ---------------- 5. 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 18px; border-radius: var(--r-sm);
  font-size: 14px; font-weight: 600; font-family: inherit;
  cursor: pointer; border: 1px solid transparent; white-space: nowrap;
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s, background 0.22s, color 0.22s;
}
.btn-primary {
  background: linear-gradient(135deg, #1e7be8, #29abe2);
  color: #fff;
  box-shadow: 0 10px 26px -10px rgba(30, 123, 232, 0.85);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(41, 171, 226, 0.95); }
.btn-ghost {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
}
.btn-ghost:hover { border-color: rgba(90, 180, 255, 0.55); background: rgba(41, 171, 226, 0.1); transform: translateY(-2px); }
.btn-lg { height: 50px; padding: 0 26px; font-size: 15px; border-radius: 12px; }
.btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }

/* ---------------- 6. Hero ---------------- */
.hero { position: relative; padding: 148px 0 0; }
.hero-inner {
  display: grid; grid-template-columns: 1.02fr 0.98fr;
  gap: 56px; align-items: center;
}
.hero-copy { min-width: 0; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 15px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.035);
  font-size: 12.8px; color: var(--text-2);
  margin-bottom: 26px;
}
.hero-badge em { font-style: normal; color: var(--ok); font-size: 12px; }
.hero-badge .sep { width: 1px; height: 11px; background: var(--line-strong); }
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 4px rgba(53, 208, 127, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(53, 208, 127, 0.16); }
  50% { box-shadow: 0 0 0 8px rgba(53, 208, 127, 0.02); }
}
.hero-title {
  font-size: clamp(38px, 4.9vw, 58px);
  line-height: 1.16; letter-spacing: -0.025em; font-weight: 800;
  margin-bottom: 22px;
}
.grad {
  background: linear-gradient(100deg, #6fd3ff 0%, #2e8bf0 46%, #a5e5ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: var(--text-2); font-size: 16px; line-height: 1.92; max-width: 545px; }
.hero-sub b { color: var(--text); font-weight: 600; }
.hero-cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 24px; margin-top: 30px; flex-wrap: wrap; }
.hero-points li { display: flex; align-items: center; gap: 7px; font-size: 13.2px; color: var(--text-3); }
.hero-points .ic { width: 15px; height: 15px; color: var(--cyan); stroke-width: 2.2; }

/* Hero 右侧：客户端界面还原 */
.hero-visual { position: relative; }
.hero-visual::before {
  content: ""; position: absolute; inset: 8% -6% -8% -6%;
  background: radial-gradient(ellipse at 50% 45%, rgba(41, 171, 226, 0.3), transparent 68%);
  filter: blur(40px); z-index: -1;
}
.app-window {
  border: 1px solid var(--line-strong); border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(16, 34, 64, 0.94), rgba(8, 18, 36, 0.96));
  box-shadow: 0 44px 90px -40px rgba(0, 0, 0, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}
.aw-bar {
  display: flex; align-items: center; gap: 6px;
  height: 42px; padding: 0 14px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--line);
  font-size: 12.5px; color: var(--text-2);
}
.aw-dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.aw-dot.r { background: #ff5f57; } .aw-dot.y { background: #febc2e; } .aw-dot.g { background: #28c840; }
.aw-logo { width: 20px; height: 20px; object-fit: contain; margin-left: 8px; }
.aw-title { margin-left: 4px; font-weight: 600; font-size: 12.5px; }
.aw-flex { flex: 1; }
.aw-pill {
  font-family: var(--mono); font-size: 11px; color: var(--cyan-soft);
  border: 1px solid rgba(41, 171, 226, 0.28); border-radius: 999px;
  padding: 3px 10px; background: rgba(41, 171, 226, 0.1);
}
.aw-search {
  display: flex; align-items: center; gap: 10px;
  margin: 13px 14px 0; height: 40px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-3); font-size: 13px;
}
.aw-search .ic { width: 16px; height: 16px; }
.aw-search kbd {
  font-family: var(--mono); font-size: 10px; color: var(--text-3);
  border: 1px solid var(--line-strong); border-radius: 5px;
  padding: 2px 5px; background: rgba(255, 255, 255, 0.03);
}
.aw-tags { display: flex; gap: 8px; padding: 13px 14px 5px; flex-wrap: wrap; }
.tg {
  font-size: 12px; padding: 5px 13px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--text-2);
  background: rgba(255, 255, 255, 0.02);
}
.tg.on { background: linear-gradient(135deg, #1e7be8, #29abe2); color: #fff; border-color: transparent; }
.aw-list { padding: 9px; display: grid; gap: 2px; }
.aw-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--r-sm);
  transition: background 0.22s;
}
.aw-row:hover { background: rgba(80, 160, 255, 0.09); }
.aw-row.dim { opacity: 0.62; }
.fi {
  position: relative; width: 27px; height: 27px; border-radius: 7px; flex: none;
  display: grid; place-items: center;
}
.fi::after {
  content: ""; width: 11px; height: 1.6px; border-radius: 2px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 -4px 0 rgba(255, 255, 255, 0.55), 0 4px 0 rgba(255, 255, 255, 0.55);
}
.fi.d { background: linear-gradient(135deg, #2e8bf0, #4fd1ff); }
.fi.i { background: linear-gradient(135deg, #7c5cff, #b69bff); }
.fi.v { background: linear-gradient(135deg, #f2a33c, #ffd08a); }
.fi.p { background: linear-gradient(135deg, #22b573, #6fe0a8); }
.fi.c { background: linear-gradient(135deg, #5c7a9e, #93a9c4); }
.aw-meta { flex: 1; min-width: 0; }
.aw-meta b { display: block; font-size: 12.8px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.aw-meta small { display: block; font-size: 11.2px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tag-mini {
  font-size: 10.8px; padding: 3px 8px; border-radius: 6px; flex: none;
  background: rgba(41, 171, 226, 0.14); color: var(--cyan-soft);
  border: 1px solid rgba(41, 171, 226, 0.26);
}
.tag-mini.alt {
  background: rgba(150, 120, 255, 0.14); color: #c0aeff;
  border-color: rgba(150, 120, 255, 0.26);
}
.aw-foot {
  display: flex; gap: 20px; padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 11.5px; color: var(--text-3); flex-wrap: wrap;
}
.aw-foot b { font-family: var(--mono); color: var(--cyan); font-weight: 600; }

.float-card {
  position: absolute; display: flex; align-items: center; gap: 10px;
  padding: 11px 15px; border-radius: 12px;
  background: rgba(9, 20, 40, 0.94);
  border: 1px solid var(--line-strong);
  box-shadow: 0 22px 44px -20px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  animation: floaty 6.5s ease-in-out infinite;
}
.float-card b { display: block; font-size: 12.5px; font-weight: 600; }
.float-card small { display: block; font-size: 11px; color: var(--text-3); }
.fc-dot {
  width: 9px; height: 9px; border-radius: 50%; flex: none;
  background: var(--ok); box-shadow: 0 0 0 4px rgba(53, 208, 127, 0.16);
}
.fc-dot.blue { background: var(--cyan); box-shadow: 0 0 0 4px rgba(79, 209, 255, 0.16); }
.fc1 { left: -30px; top: 33%; }
.fc2 { right: -24px; bottom: 17%; animation-delay: -3s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* 技术底座滚动条 */
.tech-strip {
  margin-top: 90px; padding: 16px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.tech-track { display: flex; align-items: center; gap: 30px; width: max-content; animation: marquee 46s linear infinite; }
.tech-track span {
  font-size: 13px; color: var(--text-3); letter-spacing: 0.06em;
  font-family: var(--mono); white-space: nowrap;
}
.tech-track i { width: 5px; height: 5px; border-radius: 50%; background: var(--brand-2); opacity: 0.65; flex: none; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------------- 7. 通用区块 ---------------- */
.sec { position: relative; padding: 108px 0; }
.sec-alt {
  background: linear-gradient(180deg, rgba(8, 20, 40, 0.62), rgba(6, 14, 30, 0.18));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.sec-head { max-width: 780px; margin-bottom: 52px; }
.sec-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em;
  color: #4fb6ff; text-transform: uppercase; margin-bottom: 16px;
}
.sec-label::before {
  content: ""; width: 26px; height: 1px;
  background: linear-gradient(90deg, transparent, #4fb6ff);
}
.sec-head h2 { font-size: clamp(26px, 3.3vw, 39px); line-height: 1.28; margin-bottom: 16px; }
.sec-head p { color: var(--text-2); font-size: 15.4px; line-height: 1.9; }

/* 卡片 */
.card {
  position: relative; padding: 26px; border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(15, 32, 60, 0.62), rgba(9, 20, 40, 0.5));
  border: 1px solid var(--line);
  transition: transform 0.34s cubic-bezier(0.2, 0.7, 0.3, 1), border-color 0.34s, box-shadow 0.34s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 18%; right: 18%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(120, 200, 255, 0.5), transparent);
  opacity: 0; transition: opacity 0.34s;
}
.card:hover { transform: translateY(-5px); border-color: rgba(90, 180, 255, 0.42); box-shadow: var(--shadow-card); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 17.5px; margin-bottom: 10px; }
.card p { color: var(--text-2); font-size: 14px; line-height: 1.82; }
.card-ic {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 18px;
  display: grid; place-items: center; color: #6fd3ff;
  background: linear-gradient(135deg, rgba(41, 171, 226, 0.2), rgba(30, 123, 232, 0.06));
  border: 1px solid rgba(90, 180, 255, 0.26);
  box-shadow: inset 0 0 18px rgba(41, 171, 226, 0.12);
}
.card-ic .ic { width: 22px; height: 22px; }
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.ticks { margin-top: 16px; display: grid; gap: 9px; }
.ticks li { position: relative; padding-left: 17px; font-size: 13px; color: var(--text-3); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%;
  background: linear-gradient(135deg, #4fd1ff, #1e7be8);
  box-shadow: 0 0 8px rgba(79, 209, 255, 0.7);
}
.ticks.big li { font-size: 13.6px; color: var(--text-2); padding: 4px 0 4px 18px; }
.ticks.big li::before { top: 13px; }

/* ---------------- 8. 功能矩阵 ---------------- */
.matrix { display: grid; grid-template-columns: 1.06fr 1fr; gap: 20px; align-items: start; }
.matrix-main { min-width: 0; }
.card-lg { padding: 32px; }
.badge-solid {
  display: inline-block; font-size: 11.5px; letter-spacing: 0.05em;
  padding: 4px 11px; border-radius: 999px; font-weight: 600;
  background: linear-gradient(135deg, #1e7be8, #29abe2); color: #fff;
}
.mm-head h3 { font-size: 25px; margin: 14px 0 8px; }
.mm-head p { color: var(--text-2); font-size: 14px; }
.mm-list { margin-top: 22px; }
.mm-list li {
  display: grid; grid-template-columns: 148px 1fr; gap: 16px;
  padding: 12.5px 8px; border-bottom: 1px dashed var(--line);
  transition: background 0.25s, padding 0.25s;
}
.mm-list li:last-child { border-bottom: 0; }
.mm-list li:hover { background: rgba(80, 160, 255, 0.06); padding-left: 14px; border-radius: 8px; }
.mm-list b { font-size: 14px; font-weight: 600; }
.mm-list li:hover b { color: var(--cyan); }
.mm-list span { font-size: 13.2px; color: var(--text-3); }
.matrix-side { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card-sm { padding: 22px; }
.card-sm h3 { font-size: 15.5px; margin-bottom: 8px; }
.card-sm p { font-size: 13px; line-height: 1.78; }
.cs-ic {
  width: 38px; height: 38px; border-radius: 10px; margin-bottom: 14px;
  display: grid; place-items: center; color: #6fd3ff;
  background: linear-gradient(135deg, rgba(41, 171, 226, 0.18), rgba(30, 123, 232, 0.05));
  border: 1px solid rgba(90, 180, 255, 0.22);
}
.cs-ic .ic { width: 19px; height: 19px; }

/* ---------------- 9. 数据看板 ---------------- */
.stats { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.stat {
  text-align: center; padding: 28px 12px; border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(15, 32, 60, 0.58), rgba(9, 20, 40, 0.45));
  border: 1px solid var(--line);
  transition: border-color 0.3s, transform 0.3s;
}
.stat:hover { border-color: rgba(90, 180, 255, 0.42); transform: translateY(-4px); }
.stat .num {
  display: block; font-family: var(--mono); font-weight: 700;
  font-size: clamp(26px, 3vw, 38px); letter-spacing: -0.02em;
  background: linear-gradient(180deg, #c9ecff, #2e8bf0);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { display: block; margin-top: 9px; font-size: 13px; color: var(--text-3); }
.data-note { margin-top: 24px; display: flex; align-items: center; gap: 11px; font-size: 13px; color: var(--text-3); }
.sn-dot {
  width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--text-3);
  box-shadow: 0 0 0 4px rgba(114, 136, 168, 0.14);
}
.sn-dot.on { background: var(--ok); box-shadow: 0 0 0 4px rgba(53, 208, 127, 0.16); }
.sn-dot.off { background: var(--warn); box-shadow: 0 0 0 4px rgba(255, 176, 32, 0.16); }

/* ---------------- 10. 公告 / 社区 ---------------- */
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.news-col { min-width: 0; }
.col-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.col-head h2 { font-size: 22px; }
.link-more { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--cyan-soft); transition: gap 0.22s; }
.link-more:hover { gap: 10px; }
.link-more .ic { width: 15px; height: 15px; }
.notice-list, .thread-list { display: grid; gap: 12px; }
.notice-item, .thread-item {
  padding: 18px 20px; border-radius: var(--r-md);
  background: rgba(12, 26, 50, 0.55);
  border: 1px solid var(--line);
  transition: transform 0.26s, border-color 0.26s, background 0.26s;
}
.notice-item:hover, .thread-item:hover {
  transform: translateX(5px); border-color: rgba(90, 180, 255, 0.4); background: rgba(16, 34, 64, 0.7);
}
.ni-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ni-time { font-family: var(--mono); font-size: 11.5px; color: var(--text-3); }
.chip {
  font-size: 11.5px; padding: 3px 9px; border-radius: 6px; font-weight: 600;
  border: 1px solid transparent;
}
.chip.info { background: rgba(41, 171, 226, 0.14); color: var(--cyan-soft); border-color: rgba(41, 171, 226, 0.26); }
.chip.success { background: rgba(53, 208, 127, 0.13); color: #6fe0a8; border-color: rgba(53, 208, 127, 0.26); }
.chip.warning { background: rgba(255, 176, 32, 0.13); color: #ffcb6b; border-color: rgba(255, 176, 32, 0.26); }
.chip.danger { background: rgba(255, 107, 107, 0.13); color: #ff9b9b; border-color: rgba(255, 107, 107, 0.26); }
.chip.top { background: rgba(150, 120, 255, 0.15); color: #c0aeff; border-color: rgba(150, 120, 255, 0.28); }
.notice-item h3 { font-size: 15px; margin: 9px 0 7px; line-height: 1.55; }
.notice-item p {
  font-size: 13px; color: var(--text-3); line-height: 1.78;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.thread-item .ti-title { font-size: 14.6px; font-weight: 600; line-height: 1.6; margin-bottom: 9px; }
.thread-item .ti-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--text-3); flex-wrap: wrap; }
.thread-item .ti-meta b { font-family: var(--mono); color: var(--cyan-soft); font-weight: 600; }
.avatar {
  width: 22px; height: 22px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-size: 11px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #1e7be8, #4fd1ff);
}
.empty { padding: 30px 20px; text-align: center; color: var(--text-3); font-size: 13.5px; border: 1px dashed var(--line-strong); border-radius: var(--r-md); }
.skel {
  height: 82px; border-radius: var(--r-md);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
  background-size: 200% 100%;
  animation: shimmer 1.5s linear infinite;
}
.skel.tall { height: 170px; }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ---------------- 11. 下载中心 ---------------- */
.dl-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; align-items: start; }
.dl-main { display: grid; grid-template-columns: 1fr 196px; gap: 30px; }
.dl-ver { display: flex; align-items: center; gap: 12px; }
.dl-ver b { font-family: var(--mono); font-size: 15px; color: var(--cyan-soft); }
.dl-main h3 { font-size: 24px; margin: 15px 0 11px; }
.dl-main > .dl-left > p { color: var(--text-2); font-size: 14px; line-height: 1.85; }
.dl-meta { display: flex; gap: 30px; margin: 24px 0; flex-wrap: wrap; }
.dl-meta small { display: block; font-size: 11.5px; color: var(--text-3); margin-bottom: 3px; }
.dl-meta b { font-size: 13.5px; font-weight: 600; }
.dl-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.dl-qr { text-align: center; }
.qr-box {
  aspect-ratio: 1 / 1; border-radius: var(--r-md);
  border: 1px dashed var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  display: grid; place-items: center; gap: 8px; align-content: center;
  padding: 16px;
}
.qr-box img { width: 82px; margin: 0 auto; filter: drop-shadow(0 0 16px rgba(41, 171, 226, 0.5)); }
.qr-box span { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.3em; color: var(--text-3); }
.dl-qr > small { display: block; margin-top: 14px; font-size: 12px; color: var(--text-3); line-height: 1.75; }
.dl-side { display: grid; gap: 16px; }
.side-title { font-size: 15px; margin-bottom: 16px; }
.res-list { display: grid; gap: 10px; }
.res-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: var(--r-sm);
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.24s, background 0.24s, transform 0.24s;
}
.res-item:hover { border-color: rgba(90, 180, 255, 0.45); background: rgba(41, 171, 226, 0.08); transform: translateX(4px); }
.ri-ic {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  display: grid; place-items: center; color: #6fd3ff;
  background: rgba(41, 171, 226, 0.12); border: 1px solid rgba(41, 171, 226, 0.24);
}
.ri-ic .ic { width: 16px; height: 16px; }
.res-item b { display: block; font-size: 13.4px; font-weight: 600; }
.res-item small { display: block; font-size: 11.4px; color: var(--text-3); }

/* ---------------- 12. 时间线 ---------------- */
.timeline { position: relative; padding-left: 32px; display: grid; gap: 20px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 1px;
  background: linear-gradient(180deg, rgba(79, 209, 255, 0.8), rgba(41, 171, 226, 0.12));
}
.timeline li {
  position: relative; padding: 24px 28px; border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(15, 32, 60, 0.6), rgba(9, 20, 40, 0.48));
  border: 1px solid var(--line);
  transition: border-color 0.3s, transform 0.3s;
}
.timeline li:hover { border-color: rgba(90, 180, 255, 0.42); transform: translateX(5px); }
.timeline li::before {
  content: ""; position: absolute; left: -32px; top: 30px;
  width: 15px; height: 15px; border-radius: 50%;
  background: linear-gradient(135deg, #4fd1ff, #1e7be8);
  border: 3px solid #050b18;
  box-shadow: 0 0 0 1px rgba(79, 209, 255, 0.5), 0 0 16px rgba(79, 209, 255, 0.55);
}
.tl-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.tl-ver { font-family: var(--mono); font-size: 18.5px; font-weight: 700; color: var(--text); }
.tl-date { font-family: var(--mono); font-size: 12px; color: var(--text-3); }
.tl-body { display: grid; gap: 8px; }
.tl-body li { position: relative; padding-left: 16px; font-size: 13.6px; color: var(--text-2); line-height: 1.78; }
.tl-body li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px; border-radius: 50%; background: rgba(120, 200, 255, 0.6);
}

/* ---------------- 13. FAQ ---------------- */
.faq-list { display: grid; gap: 12px; }
.faq-item {
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: rgba(12, 26, 50, 0.5); overflow: hidden;
  transition: border-color 0.28s, background 0.28s;
}
.faq-item.open { border-color: rgba(90, 180, 255, 0.4); background: rgba(16, 34, 64, 0.62); }
.faq-q {
  width: 100%; display: flex; align-items: center; gap: 16px;
  padding: 19px 22px; cursor: pointer; text-align: left;
  background: none; border: 0; color: var(--text);
  font-family: inherit; font-size: 15.4px; font-weight: 600; line-height: 1.6;
}
.fq-ic {
  position: relative; width: 24px; height: 24px; border-radius: 50%; flex: none;
  border: 1px solid rgba(90, 180, 255, 0.34);
  background: rgba(41, 171, 226, 0.1);
  transition: transform 0.3s, background 0.3s;
}
.fq-ic::before, .fq-ic::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  background: var(--cyan-soft); border-radius: 2px; transform: translate(-50%, -50%);
}
.fq-ic::before { width: 10px; height: 1.6px; }
.fq-ic::after { width: 1.6px; height: 10px; transition: opacity 0.3s; }
.faq-item.open .fq-ic { transform: rotate(180deg); background: rgba(41, 171, 226, 0.22); }
.faq-item.open .fq-ic::after { opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.38s cubic-bezier(0.3, 0.7, 0.3, 1); }
.faq-item.open .faq-a { max-height: 460px; }
.faq-a p { padding: 0 22px 22px 62px; color: var(--text-2); font-size: 14px; line-height: 1.88; }

/* ---------------- 14. CTA ---------------- */
.cta-band {
  padding: 76px 0;
  background: linear-gradient(115deg, rgba(23, 92, 194, 0.34), rgba(9, 20, 40, 0.15) 55%, rgba(41, 171, 226, 0.22));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(23px, 2.7vw, 33px); margin-bottom: 12px; }
.cta-inner p { color: var(--text-2); font-size: 15px; }

/* ---------------- 15. 页脚 ---------------- */
.footer { padding: 64px 0 28px; background: rgba(4, 9, 20, 0.92); border-top: 1px solid var(--line); }
.foot-top {
  display: grid; grid-template-columns: 1fr 1.6fr; gap: 60px;
  padding-bottom: 44px; border-bottom: 1px solid var(--line);
}
.foot-logo-card {
  display: inline-block; padding: 16px 20px; border-radius: 12px;
  background: #fff; box-shadow: 0 18px 40px -22px rgba(0, 0, 0, 0.9);
}
.foot-logo-card img { width: 208px; }
.foot-brand p { margin-top: 20px; color: var(--text-3); font-size: 13.4px; line-height: 1.9; }
.foot-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.foot-cols h4 { font-size: 14px; margin-bottom: 14px; color: var(--text); }
.foot-cols a { display: block; padding: 6px 0; font-size: 13.4px; color: var(--text-3); transition: color 0.22s, padding-left 0.22s; }
.foot-cols a:hover { color: var(--cyan-soft); padding-left: 5px; }
.foot-bottom {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding-top: 24px; font-size: 12.5px; color: var(--text-3);
}
.foot-sep { width: 1px; height: 12px; background: var(--line-strong); }
.foot-flex { flex: 1; }

/* ---------------- 16. 回到顶部 ---------------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 40;
  width: 46px; height: 46px; border-radius: 13px; cursor: pointer;
  display: grid; place-items: center; color: var(--text-2);
  background: rgba(12, 28, 54, 0.92); border: 1px solid var(--line-strong);
  backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none; transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s, border-color 0.3s, color 0.3s;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { border-color: rgba(90, 180, 255, 0.55); color: var(--cyan); }

/* ---------------- 17. 滚动动效 ---------------- */
[data-reveal] {
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.72s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.72s cubic-bezier(0.2, 0.7, 0.3, 1);
  will-change: opacity, transform;
}
[data-reveal].in { opacity: 1; transform: none; }

/* ---------------- 18. 响应式 ---------------- */
@media (max-width: 1080px) {
  .hero { padding-top: 122px; }
  .hero-inner { grid-template-columns: 1fr; gap: 54px; }
  .hero-sub { max-width: 100%; }
  .matrix { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: 1fr; gap: 40px; }
  .dl-grid { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr; gap: 40px; }
  .fc1 { left: -14px; }
  .fc2 { right: -10px; }
}
@media (max-width: 860px) {
  .nav-links {
    position: fixed; top: 66px; left: 0; right: 0;
    display: none; flex-direction: column; align-items: stretch; gap: 2px;
    padding: 14px 20px 20px;
    background: rgba(5, 11, 24, 0.98);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 10px; font-size: 15px; }
  .nav-links a.active::after { left: 10px; margin-left: 0; }
  .nav-toggle { display: flex; }
  #navPlatform { display: none; }
}
@media (max-width: 760px) {
  .sec { padding: 74px 0; }
  .wrap { padding: 0 18px; }
  .grid-3 { grid-template-columns: 1fr; }
  .matrix-side { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .dl-main { grid-template-columns: 1fr; }
  .dl-qr { display: none; }
  .mm-list li { grid-template-columns: 1fr; gap: 3px; }
  .float-card { display: none; }
  .hero-cta .btn { flex: 1; }
  .tech-strip { margin-top: 60px; }
  .sec-head { margin-bottom: 36px; }
  .faq-a p { padding-left: 22px; }
  .foot-cols { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .foot-logo-card img { width: 168px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .card-lg { padding: 24px; }
  .timeline { padding-left: 26px; }
  .timeline li { padding: 20px; }
  .timeline li::before { left: -26px; }
}

/* ---------------- 19. 无障碍 / 降低动效 ---------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
  #particles { display: none; }
}