/* ==========================================================================
   V2Ray 下载站 — 全局样式
   风格定位：黑红对比、棱角切角、粗体大写标题的高对比游戏 UI 风（Persona 5 风格）
   ========================================================================== */

:root{
  --brand: #e2001a;
  --brand-dark: #a4000f;
  --brand-bright: #ff2438;
  --brand-light: rgba(226, 0, 26, .14);
  --accent: #ffffff;
  --ink: #f5f5f7;
  --ink-soft: #cfcfd6;
  --muted: #8c8c96;
  --line: #2a2a30;
  --line-soft: #1e1e23;
  --bg: #0a0a0c;
  --bg-soft: #131317;
  --bg-soft-2: #191920;
  --panel: #15151a;
  --danger: #ffb020;
  --radius: 4px;
  --radius-lg: 6px;
  --cut: 14px;
  --cut-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 10px 26px rgba(0, 0, 0, .5);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, .6);
  --glow: 0 10px 30px rgba(226, 0, 26, .35);
  --maxw: 1160px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink-soft);
  background:
    radial-gradient(circle at 18% 0%, rgba(226,0,26,.10), transparent 42%),
    var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: var(--brand-bright); text-decoration: none; }
a:hover{ color: #fff; }
ul, ol{ padding-left: 1.4em; }
code{
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: .1em .4em;
  font-size: .92em;
  color: var(--ink);
}
h1, h2, h3, h4{
  color: var(--ink); font-weight: 800; line-height: 1.25;
  letter-spacing: .01em;
  font-family: "Oswald", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}
.eyebrow{
  display: inline-flex; align-items: center; gap: 8px;
  font-family: "Oswald", sans-serif; font-weight: 700; font-size: 12.5px;
  letter-spacing: .18em; text-transform: uppercase; color: var(--brand-bright);
  margin: 0 0 10px;
}
.eyebrow::before{ content: ""; width: 18px; height: 2px; background: var(--brand-bright); display: inline-block; }

/* 细线分隔条：黑底上的一道微光红线，替代大色块横条 */
.section-divider{
  position: relative; height: 1px; overflow: hidden; background: var(--line-soft);
}
.section-divider::before{
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--brand-dark) 40%, var(--brand-bright) 50%, var(--brand-dark) 60%, transparent);
  opacity: .55;
}
.section-divider::after{
  content: ""; position: absolute; top: -1px; bottom: -1px; left: -25%; width: 22%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.65), transparent);
  animation: dividerSweep 6s ease-in-out infinite;
}
@keyframes dividerSweep{
  0%{ left: -25%; opacity: 0; }
  10%{ opacity: .8; }
  50%{ left: 60%; opacity: .8; }
  90%{ opacity: 0; }
  100%{ left: 125%; opacity: 0; }
}

/* ---------- 动效基础：滚动渐入 + 减弱动态偏好 ---------- */
.reveal{ opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view{ opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{ opacity: 1; transform: none; transition: none; }
  .section-divider::after,
  .hero::before,
  .btn-primary,
  .btn::after,
  .hero-particles span,
  .hero-text > *,
  .hero-art{ animation: none !important; }
}

/* ---------- 顶部导航 ---------- */
/* 注意：模糊背景放在 ::before 伪元素上，而不是直接放在 .navbar 上。
   直接在 .navbar 上使用 backdrop-filter/filter 会让它成为其内部
   position:fixed 子元素（移动端展开的 .nav-menu 全屏面板）的新包含块，
   导致该面板被限制在 .navbar 自身的 64px 高度内，只露出一条缝。 */
.navbar{
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 var(--brand-dark);
}
.navbar::before{
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(9, 9, 11, .94);
  backdrop-filter: saturate(140%) blur(8px);
}
.navbar-inner{
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav-menu-noscript{
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px; gap: 24px; flex-wrap: wrap;
}
.nav-menu-noscript a{
  font-size: 14.5px; font-weight: 700; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: .04em; font-family: "Oswald", sans-serif;
}
.nav-menu-noscript a:hover{ color: #fff; }
.brand{
  display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--ink);
  flex-shrink: 0; text-transform: uppercase; letter-spacing: .03em;
  font-family: "Oswald", sans-serif;
}
.brand-logo{ width: 30px; height: 30px; border-radius: 7px; }
.brand-short{ display: none; }
.navbar-right{ display: flex; align-items: center; gap: 22px; flex: 1; justify-content: flex-end; }
.nav-menu{ display: flex; align-items: center; gap: 30px; }
.nav-menu > a,
.nav-dropdown > a.has-sub{
  font-size: 14.5px; font-weight: 700; color: var(--ink-soft); padding: 8px 0; position: relative; white-space: nowrap;
  text-transform: uppercase; letter-spacing: .04em; font-family: "Oswald", sans-serif;
}
.nav-menu > a::after{
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px; background: var(--brand-bright);
  transition: right .18s ease;
}
.nav-menu > a:hover{ color: #fff; }
.nav-menu > a:hover::after{ right: 0; }
.nav-menu > a.active{ color: #fff; }
.nav-menu > a.active::after{ right: 0; background: var(--brand); }
.nav-dropdown{ position: relative; }
.nav-dropdown > a.has-sub::before{
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px; background: var(--brand-bright);
  transition: right .18s ease;
}
.nav-dropdown > a.has-sub:hover{ color: #fff; }
.nav-dropdown > a.has-sub:hover::before{ right: 0; }
.nav-dropdown > a.has-sub::after{ content: "▾"; font-size: 11px; margin-left: 4px; color: var(--muted); position: static; }
.dropdown-menu{
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  margin-top: 12px;
  background: var(--panel); border: 1px solid var(--line); border-top: 2px solid var(--brand);
  box-shadow: var(--shadow-lg); min-width: 220px; padding: 8px;
  opacity: 0; visibility: hidden; transition: opacity .15s, transform .15s;
  translate: 0 4px;
}
.dropdown-menu::before{
  /* 填补触发链接与菜单之间的间隙，避免鼠标下移时因悬停区域不连续而提前关闭菜单 */
  content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px;
}
.nav-dropdown:hover .dropdown-menu{ opacity: 1; visibility: visible; translate: 0 0; }
.dropdown-menu a{ display: block; padding: 10px 12px; border-radius: 2px; font-size: 13.5px; color: var(--ink-soft); font-weight: 600; text-transform: none; letter-spacing: 0; }
.dropdown-menu a:hover{ background: var(--brand-light); color: #fff; }

.nav-search{ position: relative; }
.nav-search input{
  width: 190px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 2px;
  font-size: 13.5px; background: var(--bg-soft); color: var(--ink);
  transition: width .2s, border-color .2s;
}
.nav-search input::placeholder{ color: var(--muted); }
.nav-search input:focus{ outline: none; width: 230px; border-color: var(--brand-bright); background: #000; }
.search-results{
  position: absolute; top: calc(100% + 8px); right: 0; width: 300px;
  background: var(--panel); border: 1px solid var(--line); border-top: 2px solid var(--brand);
  box-shadow: var(--shadow-lg); display: none; max-height: 320px; overflow: auto; z-index: 50;
}
.search-results a{ display: block; padding: 10px 14px; font-size: 13.5px; border-bottom: 1px solid var(--line-soft); color: var(--ink-soft); }
.search-results a:hover{ background: var(--brand-light); color: #fff; }
.search-empty{ padding: 14px; font-size: 13.5px; color: var(--muted); }

.lang-switch{ position: relative; }
.lang-btn{
  display: flex; align-items: center; gap: 6px; background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 2px; padding: 7px 12px; font-size: 13px; font-weight: 700; color: var(--ink-soft);
  cursor: pointer; text-transform: uppercase; letter-spacing: .03em;
}
.lang-btn:hover{ border-color: var(--brand-bright); color: #fff; }
.lang-caret{ font-size: 10px; color: var(--muted); }
.lang-btn-text-short{ display: none; }
.lang-menu{
  position: absolute; top: calc(100% + 8px); right: 0; background: var(--panel); border: 1px solid var(--line);
  border-top: 2px solid var(--brand); box-shadow: var(--shadow-lg); min-width: 160px; padding: 6px; display: none; z-index: 50;
}
.lang-menu a{ display: block; padding: 8px 12px; border-radius: 2px; font-size: 14px; color: var(--ink-soft); }
.lang-menu a:hover{ background: var(--brand-light); color: #fff; }
.lang-menu a.current{ color: var(--brand-bright); font-weight: 700; }
.lang-menu a.current::after{ content: "✓"; float: right; }
.lang-switch.open .lang-menu{ display: block; }
.mobile-search{ display: none; }
.nav-toggle{
  display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--ink);
  width: 44px; height: 44px; align-items: center; justify-content: center;
}

@media (max-width: 900px){
  .brand-full{ display: none; } .brand-short{ display: inline; }
  .nav-search{ display: none; }
  .nav-toggle{ display: flex; }
  .nav-menu{
    position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: var(--bg);
    flex-direction: column; align-items: stretch; gap: 0; padding: 16px 20px 20px;
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .18s, transform .18s;
    overflow-y: auto; border-top: 1px solid var(--line);
    -webkit-overflow-scrolling: touch;
  }
  .nav-menu.open{ transform: translateY(0); opacity: 1; visibility: visible; }
  .mobile-search{ display: block; position: relative; margin-bottom: 14px; }
  .mobile-search input{
    width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 2px;
    font-size: 16px; background: var(--bg-soft); color: var(--ink);
  }
  .mobile-search input::placeholder{ color: var(--muted); }
  .mobile-search input:focus{ outline: none; border-color: var(--brand-bright); background: #000; }
  .mobile-search .search-results{ position: static; width: 100%; margin-top: 8px; box-shadow: none; }
  .nav-menu > a{ padding: 15px 4px; border-bottom: 1px solid var(--line); min-height: 44px; display: flex; align-items: center; }
  .nav-dropdown{ border-bottom: 1px solid var(--line); }
  .nav-dropdown > a.has-sub{ padding: 15px 4px; min-height: 44px; display: flex; align-items: center; }
  .dropdown-menu{ position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; display: none; padding: 0 0 8px 12px; }
  .nav-dropdown.open .dropdown-menu{ display: block; }
  .dropdown-menu a{ padding: 12px; }
  .navbar-right{ gap: 10px; }
  .lang-btn-text{ display: none; }
  .lang-btn-text-short{ display: inline; }
}
body.nav-open{ overflow: hidden; }

/* ---------- Hero ---------- */
.hero{
  position: relative; overflow: hidden;
  background: #000;
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(circle at 82% 20%, rgba(226,0,26,.16), transparent 45%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.02) 0 2px, transparent 2px 26px);
}
.hero::before{
  content: "";
  position: absolute; top: -25%; right: -10%; width: 46%; height: 150%;
  background: radial-gradient(circle at 35% 35%, var(--brand-dark), transparent 68%);
  filter: blur(6px);
  opacity: .3; z-index: 0;
  animation: heroGlow 9s ease-in-out infinite;
}
@keyframes heroGlow{
  0%, 100%{ opacity: .22; transform: scale(1); }
  50%{ opacity: .38; transform: scale(1.06); }
}

/* 漂浮光粒子：营造氛围感，替代跑马灯 */
.hero-particles{ position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.hero-particles span{
  position: absolute; bottom: -10px; width: 3px; height: 3px; border-radius: 50%;
  background: var(--brand-bright); box-shadow: 0 0 8px 2px rgba(255, 36, 56, .55);
  opacity: 0; animation: particleRise linear infinite;
}
@keyframes particleRise{
  0%{ transform: translateY(0) scale(.6); opacity: 0; }
  12%{ opacity: .75; }
  85%{ opacity: .3; }
  100%{ transform: translateY(-320px) scale(1); opacity: 0; }
}
.hero-particles span:nth-child(1){ left: 6%;  width: 4px; height: 4px; animation-duration: 9s;  animation-delay: 0s; }
.hero-particles span:nth-child(2){ left: 16%; animation-duration: 7s;  animation-delay: 1.2s; }
.hero-particles span:nth-child(3){ left: 27%; width: 5px; height: 5px; animation-duration: 11s; animation-delay: 2.4s; }
.hero-particles span:nth-child(4){ left: 39%; animation-duration: 8s;  animation-delay: .6s; }
.hero-particles span:nth-child(5){ left: 51%; width: 4px; height: 4px; animation-duration: 10s; animation-delay: 3.5s; }
.hero-particles span:nth-child(6){ left: 62%; animation-duration: 7.5s; animation-delay: 1.8s; }
.hero-particles span:nth-child(7){ left: 71%; width: 5px; height: 5px; animation-duration: 9.5s; animation-delay: 4.2s; }
.hero-particles span:nth-child(8){ left: 81%; animation-duration: 8.5s; animation-delay: 2.9s; }
.hero-particles span:nth-child(9){ left: 90%; width: 4px; height: 4px; animation-duration: 10.5s; animation-delay: .3s; }
.hero-particles span:nth-child(10){ left: 96%; animation-duration: 7s;  animation-delay: 5s; }
.hero-inner{
  position: relative; z-index: 1;
  max-width: var(--maxw); margin: 0 auto; padding: 72px 24px 60px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center;
}
.hero-logo{ width: 56px; height: 56px; border-radius: 4px; margin-bottom: 18px; box-shadow: var(--glow); }

@keyframes heroRise{ from{ opacity: 0; transform: translateY(16px); } to{ opacity: 1; transform: translateY(0); } }
.hero-text > *{ animation: heroRise .7s ease both; }
.hero-text > .eyebrow{ animation-delay: .02s; }
.hero-text > h1{ animation-delay: .1s; }
.hero-text > .tagline{ animation-delay: .2s; }
.hero-text > .desc{ animation-delay: .3s; }
.hero-text > .hero-buttons{ animation-delay: .4s; }
.hero-text > .hero-version{ animation-delay: .5s; }
.hero-text h1{
  font-size: 46px; margin: 0 0 12px; letter-spacing: -.5px; text-transform: uppercase;
  font-style: italic; color: #fff;
  text-shadow: 3px 3px 0 var(--brand);
}
.hero-text .tagline{ font-size: 18px; color: #fff; font-weight: 700; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .03em; }
.hero-text .tagline::before{ content: "// "; color: var(--brand-bright); }
.hero-text .desc{ font-size: 15.5px; color: var(--ink-soft); margin: 0 0 28px; max-width: 520px; }
.hero-buttons{ display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.hero-version{ font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.hero-version::before{ content: "●"; color: var(--brand-bright); margin-right: 6px; font-size: 10px; vertical-align: 1px; }

.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 14px 28px; font-weight: 800; font-size: 14.5px;
  border: 1px solid transparent; cursor: pointer; transition: transform .12s, box-shadow .12s, background .12s, color .12s;
  text-transform: uppercase; letter-spacing: .04em; font-family: "Oswald", sans-serif;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  position: relative; overflow: hidden;
}
.btn::after{
  content: ""; position: absolute; top: 0; bottom: 0; left: -60%; width: 35%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,.35), transparent);
  animation: btnShine 4.5s ease-in-out infinite;
}
@keyframes btnShine{
  0%, 25%{ left: -60%; }
  55%, 100%{ left: 130%; }
}
.btn-primary{ background: var(--brand); color: #fff; box-shadow: var(--glow); animation: btnPulse 3.4s ease-in-out infinite; }
.btn-primary:hover{ background: var(--brand-bright); transform: translateY(-2px); color: #fff; animation-play-state: paused; }
@keyframes btnPulse{
  0%, 100%{ box-shadow: 0 8px 20px rgba(226,0,26,.28); }
  50%{ box-shadow: 0 10px 28px rgba(226,0,26,.5); }
}
.btn-secondary{ background: #000; color: #fff; border-color: var(--brand-bright); }
.btn-secondary:hover{ background: var(--brand-bright); color: #000; border-color: var(--brand-bright); }

.hero-art{
  width: 100%; height: auto; filter: drop-shadow(0 20px 40px rgba(226,0,26,.35));
  animation: heroRise .8s ease .25s both, heroFloat 4.5s ease-in-out 1.1s infinite;
  -webkit-mask-image: radial-gradient(ellipse 62% 62% at 50% 46%, #000 22%, rgba(0,0,0,.5) 50%, transparent 82%);
  mask-image: radial-gradient(ellipse 62% 62% at 50% 46%, #000 22%, rgba(0,0,0,.5) 50%, transparent 82%);
}
@keyframes heroFloat{
  0%, 100%{ transform: translateY(0); }
  50%{ transform: translateY(-10px); }
}

/* ---------- 特性 ---------- */
.features{
  max-width: var(--maxw); margin: 0 auto; padding: 56px 24px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature{
  border: 1px solid var(--line); padding: 26px 24px 26px 26px;
  background: var(--panel); transition: box-shadow .2s, transform .2s, border-color .2s;
  border-left: 3px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.feature:hover{ box-shadow: var(--glow); transform: translateY(-3px); border-color: var(--brand-bright); border-left-color: var(--brand-bright); }
.feature .f-ico{
  width: 42px; height: 42px; background: var(--brand-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px; color: var(--brand-bright);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  font-size: 18px; transition: transform .3s ease;
}
.feature:hover .f-ico{ transform: scale(1.12) rotate(6deg); }
.feature h2{ font-size: 16.5px; margin: 0 0 8px; text-transform: uppercase; }
.feature p{ font-size: 14px; color: var(--muted); margin: 0; }

@media (max-width: 900px){
  .hero-inner{ grid-template-columns: 1fr; padding: 36px 20px 40px; gap: 6px; }
  .hero-art{ order: -1; max-width: 190px; margin: 0 auto 6px; }
  .features{ grid-template-columns: 1fr 1fr; padding: 40px 20px; }
}
@media (max-width: 560px){
  .hero-inner{ padding: 24px 20px 36px; }
  .hero-art{ max-width: 128px; margin: 0 auto 2px; }
  .hero-text .eyebrow{ margin-bottom: 8px; }
  .hero-text h1{ font-size: 29px; margin-bottom: 8px; }
  .hero-text .tagline{ font-size: 14.5px; margin-bottom: 10px; }
  .hero-text .desc{ font-size: 13.5px; margin-bottom: 16px; }
  .hero-buttons{ margin-bottom: 14px; }
  .hero-buttons .btn{ flex: 1; padding: 12px 16px; }
  .features{ grid-template-columns: 1fr; }
}

/* ---------- 内页页头（非首页的简介条，用于下载页等二级页面） ---------- */
.page-head{
  position: relative; overflow: hidden; background: #000; border-bottom: 1px solid var(--line);
  background-image: radial-gradient(circle at 85% 15%, rgba(226,0,26,.14), transparent 45%);
}
.page-head-inner{ max-width: var(--maxw); margin: 0 auto; padding: 48px 24px 40px; }
.page-head .eyebrow{ margin-bottom: 12px; }
.page-head h1{ font-size: 34px; margin: 0 0 10px; text-transform: uppercase; font-style: italic; color: #fff; text-shadow: 2px 2px 0 var(--brand); }
.page-head p{ font-size: 15px; color: var(--ink-soft); max-width: 640px; margin: 0 0 6px; }
.page-head .hero-version{ margin-top: 12px; display: block; }

.quick-download{ margin-top: 26px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.qd-btn{ padding: 13px 24px; gap: 12px; }
.qd-btn i{ font-size: 20px; }
.qd-btn-text{ display: flex; flex-direction: column; align-items: flex-start; text-align: left; text-transform: none; letter-spacing: 0; }
.qd-btn-text strong{ font-size: 14.5px; font-weight: 800; }
.qd-btn-text small{ font-size: 11.5px; font-weight: 600; opacity: .85; margin-top: 1px; }
.qd-switch{ display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.qd-switch-label{ margin-right: 2px; }
.qd-switch a{
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border: 1px solid var(--line);
  border-radius: 2px; color: var(--ink-soft); font-weight: 700; font-size: 12.5px;
}
.qd-switch a:hover{ border-color: var(--brand-bright); color: #fff; background: var(--brand-light); }
.qd-switch a.current{ border-color: var(--brand-bright); color: var(--brand-bright); background: var(--brand-light); }
.qd-switch a i{ font-size: 13px; color: var(--brand-bright); }
@media (max-width: 700px){
  .quick-download{ flex-direction: column; align-items: stretch; }
  .qd-btn{ width: 100%; justify-content: center; }
  .qd-switch{ justify-content: flex-start; }
}
.breadcrumb{
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--muted); text-transform: none; letter-spacing: 0;
  margin: 0 0 16px;
}
.breadcrumb a{ color: var(--muted); }
.breadcrumb a:hover{ color: #fff; }
.breadcrumb span{ color: var(--line); }
.breadcrumb strong{ color: var(--ink-soft); font-weight: 600; }

.article-meta{
  display: flex; align-items: center; gap: 10px; margin: 2px 0 14px;
  font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em;
}
.article-meta .tag{ background: var(--brand-light); color: var(--brand-bright); padding: 2px 10px; font-weight: 800; }
@media (max-width: 560px){ .page-head h1{ font-size: 26px; } }

/* ---------- 资讯列表 ---------- */
.blog-filter{ display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0 8px; }
.blog-filter a{
  display: inline-flex; align-items: center; padding: 8px 16px; border: 1px solid var(--line); background: var(--panel);
  color: var(--ink-soft); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.blog-filter a:hover, .blog-filter a.active{ color: #fff; border-color: var(--brand-bright); background: var(--brand-light); }
.blog-list{ display: flex; flex-direction: column; gap: 16px; margin: 20px 0 8px; }
.blog-row{
  display: flex; gap: 20px; align-items: center; border: 1px solid var(--line); background: var(--panel);
  padding: 20px 22px; transition: box-shadow .15s, transform .15s, border-color .15s;
  border-left: 3px solid transparent;
}
.blog-row:hover{ box-shadow: var(--glow); transform: translateY(-2px); border-color: var(--brand-bright); border-left-color: var(--brand-bright); }
.blog-row .thumb{
  width: 52px; height: 52px; flex-shrink: 0; border-radius: 2px; background: linear-gradient(135deg, var(--brand-dark), #000);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; border: 1px solid var(--line);
}
.blog-row .body{ flex: 1; min-width: 0; }
.blog-row .meta{ font-size: 12px; color: var(--muted); display: flex; gap: 8px; margin-bottom: 6px; text-transform: uppercase; letter-spacing: .02em; align-items: center; }
.blog-row .meta .tag{ background: var(--brand-light); color: var(--brand-bright); padding: 1px 9px; font-weight: 800; }
.blog-row h3{ font-size: 16.5px; margin: 0 0 6px !important; color: var(--ink); text-transform: none !important; }
.blog-row p{ font-size: 14px !important; color: var(--muted); margin: 0 !important; }
@media (max-width: 600px){ .blog-row{ flex-direction: column; align-items: flex-start; } }

/* ---------- 文章正文末尾的行动引导 ---------- */
.article-cta{
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  border: 1px solid var(--line); border-left: 3px solid var(--brand-bright); background: var(--panel);
  padding: 20px 22px; margin: 32px 0 8px;
}
.article-cta p{ margin: 0 !important; font-size: 14.5px !important; color: var(--ink-soft); }
.article-cta strong{ color: var(--ink); display: block; margin-bottom: 4px; font-size: 15px; }

/* ---------- 文章末尾的相关阅读 ---------- */
.related-articles{ margin: 28px 0 8px; padding-top: 20px; border-top: 1px solid var(--line); }
.related-articles h3{ font-size: 15px; margin: 0 0 12px; color: var(--ink); text-transform: uppercase; letter-spacing: .03em; }
.related-articles ul{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.related-articles a{ font-size: 14.5px; color: var(--ink-soft); }
.related-articles a:hover{ color: var(--brand-bright); }

/* ---------- 右下角引导下载浮窗 ---------- */
.float-download{
  position: fixed; right: 24px; bottom: 24px; z-index: 200; width: 264px;
  background: var(--panel); border: 1px solid var(--line); border-top: 2px solid var(--brand);
  box-shadow: var(--shadow-lg); padding: 18px 18px 16px; animation: floatIn .5s ease .3s both;
}
.float-download.hidden{ display: none; }
@keyframes floatIn{ from{ opacity: 0; transform: translateY(16px); } to{ opacity: 1; transform: translateY(0); } }
.float-download-close{
  position: absolute; top: 2px; right: 4px; background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 20px; line-height: 1;
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
}
.float-download-close:hover{ color: #fff; }
.float-download-body{ display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; }
.float-download-body i{ color: var(--brand-bright); font-size: 20px; margin-top: 2px; flex-shrink: 0; }
.float-download-body strong{ display: block; color: var(--ink); font-size: 14px; margin-bottom: 3px; }
.float-download-body span{ font-size: 12.5px; color: var(--muted); }
.float-download .btn{ width: 100%; padding: 11px; font-size: 13px; }
@media (max-width: 640px){
  .float-download{ left: 16px; right: 16px; width: auto; bottom: 16px; }
}
@media (prefers-reduced-motion: reduce){
  .float-download{ animation: none; }
}

/* ---------- 主体布局 ---------- */
.layout{ max-width: var(--maxw); margin: 0 auto; padding: 8px 24px 72px; display: grid; grid-template-columns: 1fr 260px; gap: 48px; }
.layout.bordered{ border-top: 1px solid var(--line); padding-top: 48px; }
.content h2{ font-size: 27px; margin: 48px 0 16px; scroll-margin-top: 84px; text-transform: uppercase; }
.content h2:first-child{ margin-top: 0; }
.content h3{ font-size: 19px; margin: 32px 0 12px; display: flex; align-items: center; gap: 10px; scroll-margin-top: 84px; }
.content p{ font-size: 15.5px; margin: 0 0 16px; }
.content li{ font-size: 15.5px; margin-bottom: 6px; }
.h-icon{ width: 22px; height: 22px; }

.tip, .warning{
  padding: 16px 18px; margin: 18px 0; font-size: 14.5px;
  border: 1px solid; border-left-width: 4px; display: flex; flex-direction: column; gap: 4px;
  background: var(--panel);
}
.tip{ border-color: var(--line); border-left-color: var(--brand-bright); }
.tip strong{ color: var(--brand-bright); text-transform: uppercase; letter-spacing: .03em; font-size: 12.5px; }
.warning{ border-color: var(--line); border-left-color: var(--danger); }
.warning strong{ color: var(--danger); text-transform: uppercase; letter-spacing: .03em; font-size: 12.5px; }

.float-illustration{
  float: right; width: 220px; margin: 0 0 16px 24px; border: 1px solid var(--line);
}
@media (max-width: 700px){ .float-illustration{ float: none; width: 100%; margin: 0 0 16px; } }

/* ---------- 区块标题 ---------- */
.section-head{ display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin: 48px 0 16px; scroll-margin-top: 84px; }
.section-head h2{ margin: 0; padding-bottom: 10px; position: relative; flex: 1; min-width: 0; }
.section-head h2::after{
  content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--brand-bright), var(--brand-dark));
  transition: width .7s cubic-bezier(.22, .8, .2, 1);
}
.section-head h2.in-view::after{ width: 58px; }
.section-head .more{ font-size: 13px; font-weight: 800; white-space: nowrap; flex-shrink: 0; text-transform: uppercase; letter-spacing: .03em; color: var(--brand-bright); }
.section-head .more:hover{ color: #fff; }
.section-sub{ font-size: 14.5px; color: var(--muted); margin: -8px 0 20px; }
@media (max-width: 640px){
  .section-head{ flex-direction: column; align-items: flex-start; gap: 6px; }
  .section-head h2{ width: 100%; }
  .section-head .more{ white-space: normal; }
}

/* 平台选择卡片 */
.os-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 20px 0; }
.os-card{
  border: 1px solid var(--line); padding: 24px 16px; text-align: center;
  background: var(--panel); transition: box-shadow .15s, transform .15s, border-color .15s; display: flex; flex-direction: column; align-items: center;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.os-card:hover{ box-shadow: var(--glow); transform: translateY(-4px); border-color: var(--brand-bright); }
.os-ico{ display: block; font-size: 38px; line-height: 1; margin-bottom: 12px; color: #fff; transition: transform .3s ease; }
.os-card:hover .os-ico{ transform: scale(1.15) rotate(-5deg); color: var(--brand-bright); }
.os-card h3{ font-size: 15.5px; margin: 0 0 4px; text-transform: uppercase; }
.os-card .client{ font-size: 12.5px; color: var(--muted); margin-bottom: 8px; min-height: 32px; }
.os-card .ver{ font-size: 12px; color: var(--brand-bright); font-weight: 800; background: var(--brand-light); padding: 3px 10px; margin-bottom: 10px; letter-spacing: .02em; }
.os-card .go{ font-size: 13px; font-weight: 700; color: var(--brand-bright); }
.os-card .dl-btn{
  display: block; width: 100%; background: var(--brand); color: #fff; font-size: 13px; font-weight: 800;
  padding: 10px 8px; margin-top: auto; transition: background .12s; text-transform: uppercase; letter-spacing: .03em;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.os-card .dl-btn:hover{ background: var(--brand-bright); color: #fff; }
.os-card .more-variants{ width: 100%; margin-top: 10px; font-size: 12.5px; }
.os-card .more-variants summary{
  cursor: pointer; color: var(--muted); font-weight: 700; list-style: none; text-align: center; text-transform: uppercase; letter-spacing: .03em; font-size: 11.5px;
}
.os-card .more-variants summary::-webkit-details-marker{ display: none; }
.os-card .more-variants summary:hover{ color: var(--brand-bright); }
.os-card .more-variants[open] summary{ color: var(--brand-bright); }
.os-card .more-variants a{ display: block; text-align: left; padding: 7px 4px; color: var(--ink-soft); border-top: 1px dashed var(--line); font-size: 12.5px; }
.os-card .more-variants a:hover{ color: var(--brand-bright); background: var(--brand-light); }
@media (max-width: 900px){ .os-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px){ .os-grid{ grid-template-columns: 1fr; } }

/* ---------- 教程页：平台快速切换 + 编号步骤列表 ---------- */
.platform-tabs{ display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0 8px; }
.platform-tabs a{
  display: flex; align-items: center; gap: 8px; padding: 10px 18px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink-soft);
  font-size: 13.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: border-color .15s, color .15s, background .15s;
}
.platform-tabs a i{ color: var(--brand-bright); }
.platform-tabs a:hover{ color: #fff; border-color: var(--brand-bright); background: var(--brand-light); }

.tutorial-block{ margin-bottom: 44px; padding-bottom: 8px; scroll-margin-top: 84px; }
.tutorial-steps{ list-style: none; padding: 0; margin: 16px 0 28px; counter-reset: step; }
.tutorial-steps > li{
  position: relative; padding: 0 0 26px 30px; margin-left: 17px; border-left: 2px solid var(--line);
}
.tutorial-steps > li:last-child{ border-left-color: transparent; padding-bottom: 0; }
.tutorial-steps > li::before{
  counter-increment: step; content: counter(step);
  position: absolute; left: -17px; top: 0; width: 34px; height: 34px;
  background: var(--brand); color: #fff; font-weight: 800; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}
.tutorial-steps > li h3{ margin-top: 0 !important; }
.tutorial-steps > li h3 i{ color: var(--brand-bright); }
.tutorial-steps > li p:last-child{ margin-bottom: 0 !important; }
.tutorial-steps > li img{ margin: 10px 0 4px; border: 1px solid var(--line); max-width: 420px; }

/* ---------- 下载页：按平台展示的客户端详情 ---------- */
.dl-block{ margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--line-soft); scroll-margin-top: 84px; }
.dl-block:last-of-type{ border-bottom: none; margin-bottom: 8px; }
.dl-head{ display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.dl-os-ico{ font-size: 34px; color: var(--brand-bright); width: 52px; text-align: center; flex-shrink: 0; }
.dl-head h2{ margin: 0 0 4px !important; font-size: 22px !important; }
.dl-head .dl-sub{ margin: 0 !important; font-size: 13.5px !important; color: var(--muted); }

.dl-client{
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  border: 1px solid var(--line); background: var(--panel); padding: 22px 24px; margin-bottom: 14px;
  border-left: 3px solid var(--brand-bright); transition: border-color .15s, box-shadow .15s;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.dl-client:hover{ box-shadow: var(--glow); }
.dl-client-alt{ border-left-color: var(--line); }
.dl-client-info{ flex: 1; min-width: 220px; }
.dl-client-info h3{ margin: 0 0 6px !important; font-size: 17px !important; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; text-transform: none !important; }
.dl-client-info p{ font-size: 14px !important; color: var(--muted); margin: 0 0 10px !important; }
.ver-badge{ font-size: 12px; font-weight: 800; color: var(--brand-bright); background: var(--brand-light); padding: 2px 10px; letter-spacing: .02em; }
.dl-recommend{ font-size: 11px; font-weight: 800; color: #000; background: var(--brand-bright); padding: 2px 8px; text-transform: uppercase; letter-spacing: .03em; }
.dl-meta{ list-style: none; padding: 0 !important; margin: 0 !important; display: flex; gap: 18px; flex-wrap: wrap; }
.dl-meta li{ font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; margin: 0 !important; }
.dl-meta i{ color: var(--brand-bright); }
.dl-btn-lg{ flex-shrink: 0; white-space: nowrap; }
.dl-actions{ display: flex; flex-direction: column; align-items: flex-end; gap: 8px; flex-shrink: 0; }
.dl-variants{ display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.dl-variants-label{ margin-right: 2px; }
.dl-variants a{ color: var(--ink-soft); font-weight: 700; padding: 3px 9px; border: 1px solid var(--line); border-radius: 2px; white-space: nowrap; }
.dl-variants a:hover{ border-color: var(--brand-bright); color: var(--brand-bright); }
@media (max-width: 600px){
  .dl-client{ flex-direction: column; align-items: stretch; }
  .dl-btn-lg{ width: 100%; }
  .dl-actions{ width: 100%; align-items: stretch; }
  .dl-variants{ justify-content: center; }
}

/* 三步流程 */
.steps-flow{ display: flex; align-items: stretch; gap: 12px; margin: 22px 0; flex-wrap: wrap; }
.step-box{
  flex: 1; min-width: 150px; border: 1px solid var(--line); padding: 20px 18px;
  background: var(--panel); border-top: 2px solid var(--line); transition: border-color .2s, box-shadow .2s;
}
.step-box:hover{ border-top-color: var(--brand-bright); box-shadow: var(--glow); }
.step-box .num{
  width: 30px; height: 30px; background: var(--brand); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center; margin-bottom: 12px; font-size: 14px;
  transform: rotate(45deg);
}
.step-box .num span{ transform: rotate(-45deg); display: block; }
.step-box .t{ font-weight: 800; color: var(--ink); font-size: 15px; margin-bottom: 6px; text-transform: uppercase; }
.step-box .d{ font-size: 13.5px; color: var(--muted); }
.step-arrow{ display: flex; align-items: center; color: var(--brand-bright); font-size: 22px; font-weight: 900; }
@media (max-width: 700px){ .steps-flow{ flex-direction: column; } .step-arrow{ display: none; } }

.client-intro{ display: flex; align-items: center; gap: 14px; background: var(--panel); border: 1px solid var(--line); padding: 14px 16px; margin-bottom: 14px; }
.client-intro img{ width: 44px; height: 44px; flex-shrink: 0; }
.client-intro .t{ font-weight: 800; color: var(--ink); font-size: 15px; }
.client-intro .d{ font-size: 13.5px; color: var(--muted); margin-top: 2px; }

/* ---------- 教程入口卡片 ---------- */
.guide-cards{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 8px 0 8px; }
.guide-card{
  display: block; border: 1px solid var(--line); padding: 22px 20px;
  background: var(--panel); transition: box-shadow .15s, transform .15s, border-color .15s;
  border-left: 3px solid transparent;
}
.guide-card:hover{ box-shadow: var(--glow); transform: translateY(-3px); border-color: var(--brand-bright); border-left-color: var(--brand-bright); }
.guide-card .g-ico{
  width: 38px; height: 38px; background: var(--brand-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 12px; color: var(--brand-bright);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  font-size: 16px; transition: transform .3s ease;
}
.guide-card:hover .g-ico{ transform: scale(1.12) rotate(-6deg); }
.guide-card h3{ font-size: 15.5px; margin: 0 0 6px; color: var(--ink); text-transform: uppercase; }
.guide-card p{ font-size: 13.5px; color: var(--muted); margin: 0; }
@media (max-width: 700px){ .guide-cards{ grid-template-columns: 1fr; } }

/* ---------- 首页 FAQ 手风琴 ---------- */
.faq-list{ display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.faq-item{ border: 1px solid var(--line); background: var(--panel); border-left: 3px solid var(--line); transition: border-color .15s; }
.faq-item[open]{ border-left-color: var(--brand-bright); }
.faq-item summary{
  cursor: pointer; list-style: none; padding: 15px 44px 15px 18px; font-size: 15px; font-weight: 700;
  color: var(--ink); position: relative;
}
.faq-item summary::-webkit-details-marker{ display: none; }
.faq-item summary::after{
  content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  font-size: 20px; font-weight: 400; color: var(--brand-bright); transition: transform .15s;
}
.faq-item[open] summary::after{ content: "–"; }
.faq-item p{ margin: 0; padding: 0 18px 16px; font-size: 14.5px; color: var(--muted); }
.faq-item .tutorial-steps{ padding: 0 18px 16px; margin: 0; }
.faq-item .tutorial-steps > li{ padding-bottom: 16px; }
.faq-item .tutorial-steps > li h3{ font-size: 14.5px !important; color: var(--ink); }
.faq-item .tutorial-steps > li p{ padding: 0 !important; font-size: 14px; }

/* ---------- 首页资讯卡片 ---------- */
.blog-teaser{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 8px 0 8px; }
.blog-card{ display: block; border: 1px solid var(--line); overflow: hidden; background: var(--panel); transition: box-shadow .15s, transform .15s, border-color .15s; }
.blog-card:hover{ box-shadow: var(--glow); transform: translateY(-3px); border-color: var(--brand-bright); }
.blog-card .thumb{
  height: 96px; background: linear-gradient(135deg, var(--brand-dark), #000);
  display: flex; align-items: center; justify-content: center; color: #fff; border-bottom: 1px solid var(--line);
  font-size: 26px;
}
.blog-card .body{ padding: 16px 18px; }
.blog-card .meta{ font-size: 12px; color: var(--muted); display: flex; gap: 8px; margin-bottom: 8px; text-transform: uppercase; letter-spacing: .02em; }
.blog-card .tag{ background: var(--brand-light); color: var(--brand-bright); padding: 1px 9px; font-weight: 800; }
.blog-card h3{ font-size: 15px; margin: 0 0 6px; color: var(--ink); line-height: 1.45; text-transform: none; }
.blog-card p{ font-size: 13px; color: var(--muted); margin: 0; }
@media (max-width: 900px){ .blog-teaser{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .blog-teaser{ grid-template-columns: 1fr; } }

/* ---------- 免责声明小卡片 ---------- */
.disclaimer-box{ font-size: 12.5px; color: var(--muted); }
.disclaimer-box p{ margin: 0 0 8px; }
.disclaimer-box p:last-child{ margin-bottom: 0; }

/* ---------- 侧边栏 ---------- */
.sidebar{ display: flex; flex-direction: column; gap: 20px; position: sticky; top: 84px; align-self: start; }
.sidebar-box{ border: 1px solid var(--line); padding: 20px; background: var(--panel); border-top: 2px solid var(--brand-dark); }
.sidebar-box h3{ font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 14px; font-family: "Oswald", sans-serif; }
.toc ul{ list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 2px; }
.toc a{ display: block; font-size: 14px; color: var(--ink-soft); padding: 6px 0; border-left: 2px solid transparent; padding-left: 10px; }
.toc a:hover{ color: #fff; border-left-color: var(--brand-bright); }
.toc .toc-l3 a{ padding-left: 22px; font-size: 13.5px; color: var(--muted); }
@media (max-width: 980px){ .layout{ grid-template-columns: 1fr; } .sidebar{ display: none; } }

/* ---------- 页脚 ---------- */
footer{ background: #000; color: var(--ink-soft); margin-top: 40px; border-top: 1px solid var(--line); box-shadow: 0 -1px 0 var(--brand-dark); }
.footer-inner{ max-width: var(--maxw); margin: 0 auto; padding: 56px 24px 28px; }
.footer-grid{ display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 40px; }
.footer-brand .brand{ color: #fff; margin-bottom: 12px; }
.footer-brand p{ font-size: 13.5px; color: var(--muted); max-width: 280px; }
footer h4{ color: #fff; font-size: 13px; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .06em; font-family: "Oswald", sans-serif; }
footer ul{ list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
footer a{ color: var(--muted); font-size: 13.5px; }
footer a:hover{ color: var(--brand-bright); }
footer a.current{ color: var(--brand-bright); font-weight: 700; }
.footer-bottom{ border-top: 1px solid var(--line); padding-top: 20px; font-size: 12.5px; color: #5c5c66; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }
@media (max-width: 980px){ .footer-grid{ grid-template-columns: 1.4fr 1fr 1fr; } }
@media (max-width: 800px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px){ .footer-grid{ grid-template-columns: 1fr; } }