/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg:#070C14;
  --bg-2:#0C1420;
  --surface:#121C2C;
  --surface-2:#16233A;
  --line:rgba(124,168,255,.14);
  --line-strong:rgba(124,168,255,.28);
  --text:#E8EEF9;
  --text-2:#9AA9C2;
  --text-3:#66748D;
  --primary:#3D7BFF;
  --primary-soft:rgba(61,123,255,.16);
  --accent:#B8F24C;
  --accent-ink:#0A1008;
  --warn:#FFB03A;
  --danger:#FF6B6B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-full:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset,0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 20px 60px rgba(4,10,22,.6);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --container:1200px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.menu-open{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
::selection{background:rgba(61,123,255,.4);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;position:relative;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-index{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-3);
  display:block;
  margin-bottom:10px;
}
.section-title{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-desc{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:640px;
  margin-top:12px;
}
.section-link{
  font-size:14px;
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
  padding-bottom:2px;
  white-space:nowrap;
}
.section-link:hover{color:var(--text);border-color:var(--line-strong);}
.section-link svg{transition:transform 180ms var(--ease);}
.section-link:hover svg{transform:translateX(3px);}

/* ============ 波形装饰 ============ */
.wave-mark{display:block;width:88px;height:14px;margin-bottom:16px;opacity:.75;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-full);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease),filter 180ms var(--ease);
  cursor:pointer;
  white-space:nowrap;
}
.btn-accent{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:0 8px 26px rgba(184,242,76,.28);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 34px rgba(184,242,76,.42);}
.btn-accent:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(184,242,76,.2);}
.btn-outline{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:var(--text-2);
  padding:0 8px;
  height:44px;
  font-weight:600;
}
.btn-ghost svg{transition:transform 180ms var(--ease);}
.btn-ghost:hover{color:var(--text);}
.btn-ghost:hover svg{transform:translateX(3px);}
.btn-sm{height:40px;min-height:40px;font-size:14px;padding:0 18px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-sm);
  background:var(--primary-soft);
  color:#BBD2FF;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-accent{background:rgba(184,242,76,.14);color:var(--accent);}
.tag-mono{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-3);
  text-transform:uppercase;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-full);
  border:1px solid var(--line);
  background:rgba(18,28,44,.7);
  font-size:12px;
  color:var(--text-2);
  font-family:var(--mono);
  letter-spacing:.04em;
}

/* ============ Dock 导航 ============ */
.dock-wrap{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:100%;
  max-width:1080px;
  height:64px;
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 14px 0 18px;
  border-radius:var(--r-full);
  background:rgba(18,28,44,.62);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  transition:height 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .dock{background:#101a29;}
  .glass{background:#101a29;}
}
.dock.is-scrolled{
  height:56px;
  background:rgba(18,28,44,.82);
  border-color:rgba(255,255,255,.12);
  box-shadow:0 14px 40px rgba(4,10,22,.6);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#1B4BD6);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(61,123,255,.4);
  flex:0 0 auto;
}
.brand-mark svg{width:16px;height:16px;}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand-text span{color:var(--text-2);font-weight:500;}
.dock-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1 1 auto;
  min-width:0;
}
.dock-menu a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-full);
  font-size:14px;
  color:var(--text-2);
  position:relative;
  transition:color 180ms var(--ease),background 180ms var(--ease);
  white-space:nowrap;
}
.dock-menu a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.dock-menu a.active{
  color:var(--text);
  background:var(--primary-soft);
  font-weight:600;
}
.dock-menu a.active::after{
  content:"";
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:4px;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-full);
  border:1px solid transparent;
  color:var(--text-2);
  transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
}
.icon-btn:hover{color:var(--text);background:rgba(255,255,255,.06);border-color:var(--line);}
.burger{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-full);
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  color:var(--text);
}
.burger:hover{background:rgba(255,255,255,.06);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:152px 0 96px;
  background-image:linear-gradient(90deg,rgba(7,12,20,.98) 0%,rgba(7,12,20,.9) 44%,rgba(7,12,20,.42) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(124,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  left:-10%;bottom:-40%;
  width:60%;height:80%;
  background:radial-gradient(circle,rgba(61,123,255,.22),transparent 70%);
  filter:blur(30px);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-sub{
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:520px;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:38px;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid var(--line);
  padding-top:22px;
  max-width:560px;
}
.hero-stat{
  padding:0 24px;
  border-left:1px solid var(--line);
}
.hero-stat:first-child{padding-left:0;border-left:0;}
.hero-stat b{
  display:block;
  font-family:var(--mono);
  font-size:17px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.02em;
}
.hero-stat span{display:block;font-size:12px;color:var(--text-3);margin-top:2px;letter-spacing:.02em;}

.device-card{
  position:relative;
  border-radius:var(--r-lg);
  background:rgba(18,28,44,.62);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-2);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  padding:14px;
}
.device-card img{
  width:100%;
  height:auto;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  object-fit:cover;
}
.device-bar{
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 6px 12px;
}
.device-dot{width:8px;height:8px;border-radius:50%;background:#2A3A55;}
.device-dot:nth-child(1){background:#33445f;}
.device-bar .tag-mono{margin-left:auto;}
.live-pill{
  position:absolute;
  right:-6px;
  bottom:26px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 14px;
  border-radius:var(--r-full);
  background:rgba(12,20,32,.9);
  border:1px solid var(--line-strong);
  font-size:12px;
  color:var(--text-2);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.live-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 rgba(184,242,76,.6);
  animation:breath 2.4s infinite;
}
@keyframes breath{
  0%{box-shadow:0 0 0 0 rgba(184,242,76,.55);}
  70%{box-shadow:0 0 0 10px rgba(184,242,76,0);}
  100%{box-shadow:0 0 0 0 rgba(184,242,76,0);}
}

/* ============ 行式入口卡 ============ */
.entry-list{display:grid;grid-template-columns:1fr;gap:12px;}
@media (min-width:1024px){
  .entry-list{grid-template-columns:1fr 1fr;}
}
.entry-row{
  display:grid;
  grid-template-columns:48px minmax(0,1fr) 170px auto;
  align-items:center;
  gap:18px;
  min-height:88px;
  padding:16px 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.entry-row:hover{
  background:var(--surface-2);
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:var(--shadow-1);
}
.entry-id{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--text-3);
  border-right:1px solid var(--line);
  padding-right:14px;
}
.entry-main h3{
  font-size:17px;
  font-weight:600;
  line-height:1.4;
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.entry-main h3 .ver{
  font-family:var(--mono);
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.04em;
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
}
.entry-main p{font-size:13px;color:var(--text-3);margin-top:4px;}
.entry-meta{display:grid;gap:6px;}
.entry-meta div{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;}
.entry-meta .meta-k{color:var(--text-3);}
.entry-meta .meta-v{font-family:var(--mono);font-size:12px;color:var(--text-2);letter-spacing:.03em;}

/* ============ 步骤条 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding-top:8px;
}
.steps::before{
  content:"";
  position:absolute;
  top:15px;left:8%;right:8%;
  height:1px;
  background:var(--line);
}
.step{position:relative;padding-top:44px;}
.step::before{
  content:"";
  position:absolute;
  top:8px;left:0;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--bg);
  border:1px solid var(--line-strong);
  transition:border-color 200ms var(--ease),background 200ms var(--ease),box-shadow 200ms var(--ease);
}
.step.is-done::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px rgba(184,242,76,.14);}
.step-num{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  display:block;
  margin-bottom:6px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step p{font-size:14px;line-height:1.7;color:var(--text-2);max-width:240px;}
.step-visual{
  margin-top:40px;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
}
.step-visual img{width:100%;height:auto;object-fit:cover;}

/* ============ 轮播 ============ */
.shots-head{display:flex;align-items:center;gap:10px;}
.carousel-ctrl{display:flex;gap:8px;}
.carousel-btn{
  width:44px;height:44px;
  border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(18,28,44,.72);
  border:1px solid rgba(255,255,255,.1);
  color:var(--text-2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.carousel-btn:hover{color:var(--text);border-color:var(--primary);background:var(--primary-soft);}
.track-wrap{overflow:visible;}
.track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  padding-bottom:8px;
}
.track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 auto;
  width:clamp(260px,32vw,400px);
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.shot:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.shot img{width:100%;height:210px;object-fit:cover;border-bottom:1px solid var(--line);}
.shot-body{padding:18px 20px 22px;}
.shot-body h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.shot-body p{font-size:14px;line-height:1.7;color:var(--text-2);}
.dots{display:flex;gap:8px;justify-content:center;margin-top:26px;}
.dots span{
  width:8px;height:8px;border-radius:var(--r-full);
  background:var(--line-strong);
  transition:width 220ms var(--ease),background 220ms var(--ease);
}
.dots span.on{width:24px;background:var(--accent);}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.req-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.req-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.req-head{
  padding:20px 22px 16px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.req-head h3{font-size:17px;font-weight:600;}
.req-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 22px;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.req-row:nth-child(odd){background:var(--surface-2);}
.req-row:last-child{border-bottom:0;}
.req-row .k{color:var(--text-3);}
.req-row .v{font-family:var(--mono);font-size:13px;color:var(--text);letter-spacing:.02em;text-align:right;}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
  display:flex;
  flex-direction:column;
  padding:22px;
  min-height:220px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.news-card .badge{align-self:flex-start;margin-bottom:14px;}
.news-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.news-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.news-meta time{font-family:var(--mono);letter-spacing:.03em;}
.news-meta .arrow{color:var(--text-2);transition:transform 180ms var(--ease),color 180ms var(--ease);}
.news-card:hover .news-meta .arrow{color:var(--accent);transform:translateX(3px);}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-md);
  padding:44px 24px;
  text-align:center;
  color:var(--text-2);
  font-size:15px;
  background:rgba(18,28,44,.4);
}
.empty-state .btn{margin-top:18px;}

/* ============ 骨架屏 ============ */
.skeleton{
  position:relative;
  overflow:hidden;
  background:var(--surface-2);
  border-radius:var(--r-sm);
  min-height:14px;
}
.skeleton::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.06),transparent);
  animation:sheen 1.4s infinite;
}
@keyframes sheen{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}

/* ============ 评价墙 ============ */
.voices{columns:2;column-gap:20px;}
.voice{
  break-inside:avoid;
  margin-bottom:20px;
  padding:22px;
  border-radius:var(--r-md);
  background:rgba(18,28,44,.62);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.voice:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),#1B4BD6);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;
  flex:0 0 auto;
}
.voice-name{font-size:14px;font-weight:600;}
.voice-tags{display:flex;align-items:center;gap:8px;margin-top:2px;}
.stars{color:var(--warn);font-size:12px;letter-spacing:.12em;}
.voice p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-list{max-width:820px;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:16px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--accent);background:rgba(184,242,76,.12);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows 260ms var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:720px;
  padding:0 4px 20px;
}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(61,123,255,.16),rgba(12,20,32,.4) 46%),var(--surface);
  border:1px solid var(--line-strong);
  padding:44px;
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr 200px;
  gap:40px;
  align-items:center;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(124,168,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.07) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(90deg,#000,transparent 70%);
  -webkit-mask-image:linear-gradient(90deg,#000,transparent 70%);
  pointer-events:none;
}
.cta-panel > *{position:relative;}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:12px;}
.cta-panel p{font-size:15px;line-height:1.8;color:var(--text-2);max-width:520px;margin-bottom:24px;}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;}
.qr-box{
  width:140px;height:140px;
  margin:0 auto;
  background:#fff;
  border-radius:var(--r-md);
  padding:10px;
  box-shadow:0 12px 34px rgba(0,0,0,.4);
}
.qr-box svg{width:100%;height:100%;display:block;}
.qr-note{
  text-align:center;
  font-size:12px;
  color:var(--text-3);
  margin-top:12px;
  font-family:var(--mono);
  letter-spacing:.04em;
}

/* ============ 表单 ============ */
.field{display:grid;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.input{
  height:48px;
  width:100%;
  padding:0 16px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--text);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.input::placeholder{color:var(--text-3);}
.input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px var(--primary-soft);
}
.field.has-error .input{border-color:var(--danger);}
.field-note{font-size:13px;color:var(--danger);}
.field.is-ok .input{border-color:var(--accent);}

/* ============ 页脚 ============ */
.footer{
  position:relative;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  overflow:hidden;
}
.footer::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(124,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,#000,transparent 80%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 80%);
  pointer-events:none;
}
.footer-inner{position:relative;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer h4{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:16px;
  font-weight:600;
}
.footer .brand{margin-bottom:16px;}
.footer p.f-about{font-size:14px;line-height:1.85;color:var(--text-2);max-width:320px;}
.footer p.f-key{font-size:13px;line-height:1.8;color:var(--text-3);margin-top:14px;max-width:320px;}
.f-links{display:grid;gap:10px;}
.f-links a{font-size:14px;color:var(--text-2);display:inline-block;transition:color 180ms var(--ease),transform 180ms var(--ease);}
.f-links a:hover{color:var(--text);transform:translateX(2px);}
.f-plain{font-size:14px;color:var(--text-3);}
.footer-bottom{
  position:relative;
  margin-top:52px;
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);border-bottom:1px solid var(--line);}
.footer-bottom a:hover{color:var(--text);}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px;}
  .dock{max-width:100%;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .hero{padding:132px 0 76px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-sub{max-width:none;}
  .device-card{max-width:560px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .req-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;gap:28px 24px;}
  .steps::before{display:none;}
  .cta-panel{grid-template-columns:1fr;padding:36px;}
  .qr-side{display:flex;flex-direction:column;align-items:center;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .dock-wrap{top:10px;padding:0 10px;}
  .dock{height:58px;padding:0 10px 0 14px;gap:10px;}
  .dock.is-scrolled{height:54px;}
  .brand-text{font-size:14px;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .dock-menu{
    position:fixed;
    top:76px;
    left:10px;
    right:10px;
    display:block;
    padding:8px;
    border-radius:var(--r-lg);
    background:rgba(12,20,32,.98);
    border:1px solid rgba(255,255,255,.12);
    box-shadow:var(--shadow-2);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms var(--ease);
    max-height:calc(100vh - 100px);
    overflow-y:auto;
  }
  .dock-menu.is-open{opacity:1;transform:translateY(0);visibility:visible;}
  .dock-menu a{height:48px;width:100%;border-radius:var(--r-sm);border-bottom:1px solid var(--line);}
  .dock-menu a:last-child{border-bottom:0;}
  .dock-menu a.active::after{display:none;}
  .dock-menu a.active{background:var(--primary-soft);}
  .burger{display:inline-flex;}
  .dock-actions .btn-sm{display:none;}
  .hero{padding:118px 0 60px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{flex-direction:column;gap:14px;padding-top:20px;}
  .hero-stat{padding:0;border-left:0;display:flex;align-items:baseline;gap:10px;}
  .hero-stat b{font-size:15px;}
  .hero-stat span{margin-top:0;}
  .entry-row{grid-template-columns:1fr;gap:12px;padding:18px;min-height:0;}
  .entry-id{border-right:0;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:8px;width:100%;}
  .entry-row .btn{width:100%;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .step p{max-width:none;}
  .req-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .voices{columns:1;}
  .cta-btns .btn{width:100%;}
  .carousel-ctrl{display:none;}
  .shot{width:86%;}
  .footer-inner{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:420px){
  body{font-size:15px;}
  .hero h1{font-size:27px;}
  .section-title{font-size:21px;}
  .btn{font-size:14px;padding:0 18px;}
  .cta-panel{padding:26px 20px;}
}

/* roulang page: article */
:root{
  --bg:#070C14;
  --bg-2:#0C1420;
  --surface:#121C2C;
  --surface-2:#16233A;
  --line:rgba(124,168,255,.14);
  --line-strong:rgba(124,168,255,.28);
  --text:#E8EEF9;
  --text-2:#9AA9C2;
  --text-3:#66748D;
  --primary:#3D7BFF;
  --primary-soft:rgba(61,123,255,.16);
  --accent:#B8F24C;
  --accent-ink:#0A1008;
  --warn:#FFB03A;
  --danger:#FF6B6B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-full:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 20px 60px rgba(4,10,22,.6);
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono: "JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:180ms cubic-bezier(.2,.8,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Dock 导航 ---------- */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:90;padding:0 24px;pointer-events:none}
.dock{
  pointer-events:auto;
  max-width:1080px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 14px 0 18px;
  border-radius:var(--r-full);
  background:rgba(18,28,44,.62);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  transition:height var(--ease),background var(--ease),border-color var(--ease);
}
@supports not (backdrop-filter:blur(2px)){
  .dock{background:#121C2C}
}
.dock.is-stuck{height:56px;background:rgba(18,28,44,.86);border-color:rgba(255,255,255,.12)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#3D7BFF,#1B4BC0);
  box-shadow:0 6px 18px rgba(61,123,255,.35);
}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-text span{color:var(--text-2);font-weight:600}
.dock-menu{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1}
.dock-menu li{list-style:none}
.dock-menu a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:var(--r-full);font-size:14px;font-weight:600;color:var(--text-2);
  position:relative;transition:color var(--ease),background var(--ease);
}
.dock-menu a:hover{color:var(--text);background:rgba(124,168,255,.08)}
.dock-menu a.active{color:var(--text);background:var(--primary-soft)}
.dock-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  border-radius:2px;background:var(--accent);
}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:var(--r-full);border:1px solid transparent;
  background:transparent;color:var(--text-2);cursor:pointer;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.icon-btn:hover{color:var(--text);background:rgba(124,168,255,.1);border-color:var(--line)}
.burger{display:none;width:40px;height:40px;place-items:center;border-radius:var(--r-full);border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-full);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  min-width:44px;transition:transform var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease),opacity var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px}
.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 26px rgba(184,242,76,.28)}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 8px 34px rgba(184,242,76,.42)}
.btn-accent:active{transform:translateY(1px);box-shadow:0 2px 10px rgba(184,242,76,.2)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text-2);padding:0 8px;height:44px}
.btn-ghost .arrow{transition:transform var(--ease)}
.btn-ghost:hover{color:var(--text)}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- 通用排版 ---------- */
.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-2);border:1px solid var(--line);background:rgba(124,168,255,.06);
  padding:6px 12px;border-radius:var(--r-full);
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(184,242,76,.14)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:150px 0 56px;
  background:linear-gradient(180deg,rgba(7,12,20,.35),var(--bg) 82%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(124,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.crumbs a{color:var(--text-3);transition:color var(--ease)}
.crumbs a:hover{color:var(--text)}
.crumbs .sep{color:rgba(102,116,141,.6)}
.crumbs .current{color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  margin-top:22px;
  font-size:clamp(28px,3.9vw,48px);
  line-height:1.18;font-weight:800;letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{
  margin-top:22px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  color:var(--text-2);font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;
}
.meta-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:var(--r-full);
  background:rgba(18,28,44,.72);border:1px solid var(--line);
}
.meta-chip.cat{background:var(--primary-soft);border-color:rgba(61,123,255,.35);color:#CFE0FF}
.meta-sep{width:1px;height:16px;background:var(--line)}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 96px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:56px;justify-content:center;align-items:start;
}
.article-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 44px;
  box-shadow:var(--shadow-1);
}
.article-body{font-size:16px;line-height:1.8;color:var(--text);max-width:100%}
.article-body p{margin:0 0 16px;color:#D5DEED}
.article-body h2{
  font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;
  margin:40px 0 14px;padding-left:14px;position:relative;color:var(--text);
}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--accent)}
.article-body h3{font-size:19px;line-height:1.4;font-weight:600;margin:28px 0 12px;color:var(--text)}
.article-body h4{font-size:16.5px;font-weight:600;margin:22px 0 10px;color:var(--text)}
.article-body a{color:#8FB4FF;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;transition:color var(--ease)}
.article-body a:hover{color:var(--accent)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:2px}
.article-body ul li,.article-body ol li{position:relative;padding-left:20px;margin-bottom:10px;color:#D5DEED}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:.35em;
  font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.04em;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--surface-2);border-left:3px solid var(--primary);
  border-radius:0 var(--r-md) var(--r-md) 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:22px 0 8px}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{color:var(--text);background:var(--surface-2);font-weight:600}
.article-body td{color:var(--text-2)}
.article-body code{
  font-family:var(--mono);font-size:13px;background:var(--surface-2);
  padding:2px 6px;border-radius:6px;color:#B9D2FF;
}

/* ---------- 目录 ---------- */
.toc{
  position:sticky;top:96px;
  background:rgba(18,28,44,.62);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-md);
  padding:20px 18px;
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
}
@supports not (backdrop-filter:blur(2px)){.toc{background:#121C2C}}
.toc h2{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--text-3);font-weight:600;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;font-size:14px;line-height:1.5;color:var(--text-2);
  padding:7px 0 7px 12px;border-left:2px solid transparent;
  transition:color var(--ease),border-color var(--ease);overflow:hidden;text-overflow:ellipsis;
}
.toc a:hover{color:var(--text)}
.toc a.is-current{color:var(--text);border-left-color:var(--accent)}
.toc a.lv3{padding-left:26px;font-size:13px;color:var(--text-3)}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 文章尾部 ---------- */
.article-foot{margin-top:36px;padding-top:28px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.article-foot .foot-note{font-size:13.5px;color:var(--text-3);max-width:420px}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head .hint{font-size:14px;color:var(--text-2)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.card-thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-sm);
  border:1px solid var(--line);margin-bottom:18px;
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);
  font-size:12px;letter-spacing:.04em;font-weight:600;
  background:var(--primary-soft);color:#CFE0FF;border:1px solid rgba(61,123,255,.3);
  align-self:flex-start;
}
.card h3{
  margin:14px 0 10px;font-size:18px;line-height:1.4;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card p{
  font-size:14.5px;line-height:1.65;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:18px;
}
.card .card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--text-3);
}
.card .card-foot .go{display:inline-flex;align-items:center;gap:6px;color:#9FC0FF;font-family:var(--font);font-size:13.5px;font-weight:600}
.card:hover .card-foot .go{color:var(--accent)}
.card .card-foot .go span{transition:transform var(--ease)}
.card:hover .card-foot .go span{transform:translateX(3px)}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(135deg,rgba(61,123,255,.16),rgba(12,20,32,.9) 60%),var(--surface);
  padding:44px;display:grid;grid-template-columns:minmax(0,1fr) 160px;gap:36px;align-items:center;
  box-shadow:var(--shadow-1);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(124,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.06) 1px,transparent 1px);
  background-size:48px 48px;opacity:.9;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:12px}
.cta-panel p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.qr-box{
  width:160px;height:160px;background:#fff;border-radius:var(--r-md);
  display:grid;place-items:center;padding:10px;box-shadow:var(--shadow-2);
}
.qr-box img{width:100%;height:100%;object-fit:cover;border-radius:8px}
.qr-box .qr-fallback{font-size:12px;color:#4A5568;text-align:center;line-height:1.5;font-family:var(--mono)}

/* ---------- 空态 / 骨架 ---------- */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  padding:56px 32px;text-align:center;background:rgba(18,28,44,.5);
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.skeleton{background:var(--surface-2);border-radius:var(--r-sm);position:relative;overflow:hidden}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.06),transparent);
  animation:sweep 1.4s infinite;
}
@keyframes sweep{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,32,.4),var(--bg-2));
  padding:72px 0 0;
}
.footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(124,168,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(124,168,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(80% 60% at 50% 0%,#000,transparent 80%);
  -webkit-mask-image:radial-gradient(80% 60% at 50% 0%,#000,transparent 80%);
}
.footer .container{position:relative;z-index:1}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer h4{
  font-size:13px;letter-spacing:.08em;color:var(--text-3);
  font-weight:600;margin-bottom:16px;
}
.f-about{font-size:14px;line-height:1.75;color:var(--text-2);margin-top:16px;max-width:360px}
.f-key{font-size:13.5px;color:var(--text-3);margin-top:12px;max-width:360px}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{font-size:14px;color:var(--text-2);transition:color var(--ease),transform var(--ease)}
.f-links a:hover{color:var(--text);transform:translateX(2px)}
.f-plain{font-size:13.5px;color:var(--text-3)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);transition:color var(--ease)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 220px}
}
@media (max-width:1023px){
  .dock-wrap{padding:0 20px}
  .dock-menu{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(12,20,32,.96);
    border:1px solid var(--line);border-radius:var(--r-lg);
    padding:8px;box-shadow:var(--shadow-2);
    display:none;
  }
  .dock-menu.is-open{display:flex}
  .dock-menu a{height:48px;border-radius:var(--r-sm);font-size:15px}
  .dock-menu a.active::after{display:none}
  .dock-menu li + li{border-top:1px solid var(--line)}
  .burger{display:grid}
  .dock-actions .icon-btn{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .article-panel{padding:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
  .cta-panel{grid-template-columns:1fr;padding:36px}
  .qr-box{margin:0 auto}
  .article-hero{padding:132px 0 44px}
  .article-main{padding:44px 0 72px}
  .related{padding-bottom:72px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .dock-wrap{padding:0 12px;top:12px}
  .dock{height:56px;padding:0 10px 0 14px;gap:10px}
  .brand-text{font-size:15px}
  .dock-actions .btn-sm{height:34px;padding:0 14px;font-size:13px}
  .article-hero{padding:112px 0 36px}
  .article-title{font-size:clamp(24px,6.4vw,32px)}
  .article-panel{padding:24px 20px}
  .article-body{font-size:16px}
  .card-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer{padding-top:56px}
  .section-head{margin-bottom:22px}
  .cta-actions .btn{width:100%}
  .article-foot{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  body{font-size:15px}
  .article-body{font-size:16px}
  .brand-text span{display:none}
  .dock-actions .btn-sm{padding:0 12px}
  .cta-panel{padding:26px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg:#070C14;
  --bg-2:#0C1420;
  --surface:#121C2C;
  --surface-2:#16233A;
  --line:rgba(124,168,255,.14);
  --line-strong:rgba(124,168,255,.28);
  --text:#E8EEF9;
  --text-2:#9AA9C2;
  --text-3:#66748D;
  --primary:#3D7BFF;
  --primary-soft:rgba(61,123,255,.16);
  --accent:#B8F24C;
  --accent-ink:#0A1008;
  --warn:#FFB03A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-full:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 20px 60px rgba(4,10,22,.6);
  --ease:cubic-bezier(.2,.8,.2,1);
  --mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, "Segoe UI", sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;font-variant-numeric:tabular-nums;}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{
  position:fixed;
  top:16px;left:0;right:0;
  z-index:80;
  padding:0 16px;
  display:flex;
  justify-content:center;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  position:relative;
  width:100%;
  max-width:1080px;
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 16px 0 18px;
  border-radius:var(--r-full);
  background:rgba(18,28,44,.62);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-1);
  transition:height .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .dock{background:rgba(18,28,44,.97);}
}
.dock.is-scrolled{
  height:56px;
  background:rgba(18,28,44,.84);
  border-color:rgba(255,255,255,.14);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;
  border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#4A83FF,#2A5AD6);
  box-shadow:0 6px 18px rgba(61,123,255,.34);
  flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{
  font-size:15.5px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  line-height:1.1;
  white-space:nowrap;
}
.brand-text span{
  color:var(--text-2);
  font-weight:600;
  margin-left:3px;
}
.dock-menu{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1;}
.dock-menu li{display:block;}
.dock-menu a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-full);
  font-size:14.5px;
  font-weight:600;
  color:var(--text-2);
  transition:color .18s var(--ease), background .18s var(--ease);
  white-space:nowrap;
}
.dock-menu a:hover{color:var(--text);background:rgba(124,168,255,.09);}
.dock-menu a.active{color:var(--text);background:var(--primary-soft);}
.dock-menu a.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:5px;
  transform:translateX(-50%);
  width:16px;height:2px;
  border-radius:2px;
  background:var(--accent);
}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-full);
  color:var(--text-2);
  border:1px solid transparent;
  transition:color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.icon-btn:hover{color:var(--text);background:rgba(124,168,255,.1);border-color:var(--line);}
.burger{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border-radius:var(--r-full);
  color:var(--text);
  border:1px solid var(--line);
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--r-full);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease), filter .18s var(--ease);
}
.btn-accent{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:0 8px 26px rgba(184,242,76,.28);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 8px 34px rgba(184,242,76,.4);}
.btn-accent:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(184,242,76,.18);}
.btn-outline{
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--text);
}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  height:auto;
  padding:0;
  background:none;
  color:var(--text);
  font-weight:600;
}
.btn-ghost .arw{transition:transform .18s var(--ease);display:inline-block;}
.btn-ghost:hover{color:var(--accent);}
.btn-ghost:hover .arw{transform:translateX(3px);}
.btn-sm{height:40px;min-height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  overflow:hidden;
  background:var(--bg-2);
  padding:148px 0 76px;
}
.page-head::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(124,168,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,168,255,.06) 1px, transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,.95), transparent 82%);
  mask-image:linear-gradient(to bottom, rgba(0,0,0,.95), transparent 82%);
  pointer-events:none;
}
.page-head::after{
  content:"";
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  opacity:.16;
  pointer-events:none;
}
.page-head > .container{position:relative;z-index:2;}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:26px;
}
.crumb a{color:var(--text-3);transition:color .18s var(--ease);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(102,116,141,.6);}
.crumb .current{color:var(--text);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:var(--r-full);
  border:1px solid var(--line);
  background:rgba(61,123,255,.08);
  color:var(--text-2);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:20px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(184,242,76,.16);
}
.head-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:48px;
  align-items:end;
}
h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.head-grid .lead{
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-2);
  max-width:660px;
}
.head-side{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:22px;
  border-radius:var(--r-lg);
  background:rgba(18,28,44,.66);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.head-side .btn{width:100%;}
.head-note{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-3);
  text-align:center;
  margin-top:2px;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.8;}

/* ============ 主体两栏 ============ */
.body-section{padding-top:80px;}
.layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.toc{
  position:sticky;
  top:104px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--surface);
  padding:20px 18px;
  box-shadow:var(--shadow-1);
}
.toc-title{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  font-size:14px;
  color:var(--text-2);
  line-height:1.5;
  transition:color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.toc-list a:hover{color:var(--text);background:rgba(124,168,255,.07);}
.toc-list a.is-active{
  color:var(--text);
  border-left-color:var(--accent);
  background:rgba(61,123,255,.1);
  font-weight:600;
}
.toc-cta{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.toc-cta p{font-size:13.5px;color:var(--text-3);margin-bottom:10px;line-height:1.6;}
.toc-cta .btn{width:100%;}

.prose{max-width:760px;}
.prose-block + .prose-block{margin-top:52px;padding-top:52px;border-top:1px solid var(--line);}
.prose h2{
  position:relative;
  font-size:clamp(21px,2.3vw,27px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  padding-left:16px;
  margin-bottom:18px;
}
.prose h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  border-radius:3px;
  background:var(--accent);
}
.h2-num{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--primary);
  display:inline-block;
  margin-right:10px;
  padding:2px 8px;
  border-radius:var(--r-sm);
  background:var(--primary-soft);
  vertical-align:2px;
}
.prose h3{
  font-size:18px;
  line-height:1.4;
  font-weight:600;
  margin:28px 0 10px;
  color:var(--text);
}
.prose p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:16px;
}
.prose p strong{color:var(--text);font-weight:600;}
.prose ul{margin:0 0 18px;padding-left:0;}
.prose ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text-2);
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
  opacity:.85;
}
.prose a.inline{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.prose a.inline:hover{color:var(--accent);}
.prose figure{margin:26px 0 8px;}
.prose figure img{
  width:100%;
  height:auto;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--surface-2);
  aspect-ratio:16/9;
  object-fit:cover;
}
.prose figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
  line-height:1.6;
}
.note-card{
  border-radius:var(--r-md);
  background:var(--surface-2);
  border-left:3px solid var(--primary);
  padding:16px 18px;
  margin:22px 0;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.note-card b{color:var(--text);}

/* ============ 关键要点卡组 ============ */
.points-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.point-card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--r-md);
  background:var(--surface);
  border:1px solid var(--line);
  transition:transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.point-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-1);
}
.point-card .num{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--primary);
  display:block;
  margin-bottom:12px;
}
.point-card h3{
  font-size:18px;
  font-weight:600;
  line-height:1.4;
  margin-bottom:10px;
}
.point-card p{
  font-size:14.8px;
  line-height:1.75;
  color:var(--text-2);
}
.point-card .tagline{
  display:inline-block;
  margin-top:14px;
  padding:4px 10px;
  border-radius:var(--r-sm);
  background:var(--primary-soft);
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:#9CB9FF;
}

/* ============ FAQ ============ */
.faq-list{max-width:820px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:18px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);
  transition:transform .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon{
  transform:rotate(180deg);
  border-color:var(--accent);
  color:var(--accent);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a-inner{
  max-width:720px;
  padding:0 4px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 尾部 CTA ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-2);
  padding:52px 48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 190px;
  gap:44px;
  align-items:center;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(124,168,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,168,255,.06) 1px, transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 20% 30%, rgba(0,0,0,.9), transparent 72%);
  mask-image:radial-gradient(circle at 20% 30%, rgba(0,0,0,.9), transparent 72%);
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:2;}
.cta-panel h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.25;
  font-weight:700;
  margin-bottom:14px;
}
.cta-panel p{
  font-size:15.5px;
  line-height:1.8;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:26px;
}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;}
.qr-col{display:flex;flex-direction:column;align-items:center;gap:12px;}
.qr-box{
  width:140px;height:140px;
  border-radius:var(--r-md);
  background:#FFFFFF;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(0,0,0,.4);
}
.qr-box svg{width:84px;height:84px;color:#0A1008;}
.qr-col .qr-note{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:var(--text-3);
  text-align:center;
}

/* ============ 页脚 ============ */
.footer{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:72px 0 0;
  margin-top:24px;
}
.footer::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(124,168,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,168,255,.06) 1px, transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(to top, rgba(0,0,0,.9), transparent 76%);
  mask-image:linear-gradient(to top, rgba(0,0,0,.9), transparent 76%);
  pointer-events:none;
}
.footer .container{position:relative;z-index:2;}
.footer-inner{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:52px;
}
.footer h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--text);
  margin-bottom:18px;
}
.f-about{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  margin:18px 0 12px;
  max-width:340px;
}
.f-key{
  font-size:13px;
  line-height:1.7;
  color:var(--text-3);
  max-width:340px;
}
.f-links{display:flex;flex-direction:column;gap:12px;}
.f-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s var(--ease), transform .18s var(--ease);
  width:fit-content;
}
.f-links a:hover{color:var(--text);transform:translateX(2px);}
.f-plain{
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.7;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  align-items:center;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .head-grid{grid-template-columns:minmax(0,1fr);gap:32px;align-items:start;}
  .head-side{max-width:420px;}
  .layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .toc{position:static;top:auto;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:6px;}
  .toc-list a{
    border-left:0;
    border:1px solid var(--line);
    border-radius:var(--r-full);
    padding:7px 14px;
    font-size:13.5px;
  }
  .toc-list a.is-active{border-color:var(--accent);background:rgba(184,242,76,.08);}
  .toc-cta{display:flex;align-items:center;gap:14px;justify-content:space-between;flex-wrap:wrap;}
  .toc-cta p{margin-bottom:0;}
  .toc-cta .btn{width:auto;}
  .cta-panel{grid-template-columns:minmax(0,1fr);padding:40px 32px;gap:32px;}
  .qr-col{align-items:flex-start;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:860px){
  .dock-menu{
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:8px;
    border-radius:var(--r-lg);
    background:rgba(10,17,28,.97);
    border:1px solid var(--line);
    box-shadow:var(--shadow-2);
    display:none;
  }
  .dock-menu.is-open{display:flex;}
  .dock-menu a{
    height:48px;
    border-radius:12px;
    padding:0 16px;
    font-size:15px;
    width:100%;
  }
  .dock-menu a.active::after{display:none;}
  .burger{display:inline-flex;}
  .icon-btn{display:none;}
  .dock{gap:10px;}
  .dock-actions{margin-left:auto;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  html{scroll-padding-top:96px;}
  .page-head{padding:118px 0 56px;}
  .section{padding:56px 0;}
  .body-section{padding-top:52px;}
  h1{font-size:clamp(26px,7vw,34px);line-height:1.2;}
  .head-grid .lead{font-size:15.5px;}
  .points-grid{grid-template-columns:minmax(0,1fr);}
  .prose-block + .prose-block{margin-top:40px;padding-top:40px;}
  .prose p{font-size:15.5px;}
  .prose ul li{font-size:15px;}
  .cta-panel{padding:32px 22px;}
  .cta-btns .btn{width:100%;}
  .qr-col{align-items:center;width:100%;}
  .footer{padding-top:56px;}
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .brand-text{font-size:14.5px;}
}
@media (max-width:420px){
  h1{font-size:26px;}
  .section-head h2{font-size:21px;}
  .btn{width:100%;}
  .dock-actions .btn{width:auto;padding:0 14px;font-size:13.5px;height:36px;min-height:36px;}
  .brand-text span{display:none;}
  .head-side{padding:18px;}
  .faq-q{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg:#070C14;
  --bg-2:#0C1420;
  --surface:#121C2C;
  --surface-2:#16233A;
  --line:rgba(124,168,255,.14);
  --line-strong:rgba(124,168,255,.28);
  --text:#E8EEF9;
  --text-2:#9AA9C2;
  --text-3:#66748D;
  --primary:#3D7BFF;
  --primary-soft:rgba(61,123,255,.16);
  --accent:#B8F24C;
  --accent-ink:#0A1008;
  --warn:#FFB03A;
  --danger:#FF6B6B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-full:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 20px 60px rgba(4,10,22,.6);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ease:180ms cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-top:96px;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,textarea{font-family:inherit;font-size:inherit;}
::selection{background:rgba(61,123,255,.35);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

/* ---------- container ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- dock nav ---------- */
.dock-wrap{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:100;
  display:flex;
  justify-content:center;
  padding:0 24px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:100%;
  max-width:1080px;
  height:64px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 12px 0 18px;
  border-radius:var(--r-full);
  background:rgba(18,28,44,.62);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-1);
  transition:height var(--ease),background-color var(--ease),border-color var(--ease);
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .dock{background:rgba(18,28,44,.96);}
}
.dock.is-scrolled{
  height:56px;
  background:rgba(18,28,44,.86);
  border-color:rgba(124,168,255,.22);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(150deg,#3D7BFF,#2450B8);
  box-shadow:0 6px 18px rgba(61,123,255,.35);
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand-text span{
  color:var(--text-2);
  font-weight:500;
  margin-left:2px;
}
.dock-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:16px;
  flex:1;
}
.dock-menu a{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 14px;
  border-radius:var(--r-full);
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  position:relative;
}
.dock-menu a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.dock-menu a.active{
  color:var(--text);
  background:var(--primary-soft);
  font-weight:600;
}
.dock-menu a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.dock-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.icon-btn{
  width:38px;
  height:38px;
  border-radius:var(--r-full);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all var(--ease);
}
.icon-btn:hover{
  color:var(--text);
  background:var(--surface-2);
  border-color:var(--line);
}
.burger{
  display:none;
  width:38px;
  height:38px;
  border-radius:var(--r-full);
  align-items:center;
  justify-content:center;
  color:var(--text);
  border:1px solid var(--line);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-full);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  min-width:44px;
  border:1px solid transparent;
  transition:transform var(--ease),background-color var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn-accent{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:0 8px 26px rgba(184,242,76,.28);
}
.btn-accent:hover{
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 10px 34px rgba(184,242,76,.36);
}
.btn-accent:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(184,242,76,.2);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:var(--primary-soft);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  padding:8px 0;
  min-height:44px;
}
.btn-text svg{transition:transform var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  background:var(--bg-2);
  border-bottom:1px solid var(--line);
  padding:56px 0 52px;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(124,168,255,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(124,168,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(120% 100% at 20% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 100% at 20% 0%,#000 20%,transparent 78%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:1;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--text-2);}
.crumb span.sep{color:var(--text-3);}
.crumb .cur{color:var(--text);}
.head-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:end;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--r-full);
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(184,242,76,.16);
}
h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:16px;
}
h1 em{
  font-style:normal;
  color:var(--accent);
}
.head-lede{
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  max-width:640px;
}
.head-cta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.head-side{
  display:flex;
  gap:12px;
  align-items:center;
  padding-bottom:6px;
}
.meta-chip{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  padding:14px 18px;
  min-width:132px;
}
.meta-chip .k{
  display:block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:6px;
}
.meta-chip .v{
  display:block;
  font-family:var(--mono);
  font-size:16px;
  font-weight:600;
  color:var(--text);
}

/* ---------- sections ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{margin-bottom:8px;}
.section-head p{
  font-size:15px;
  color:var(--text-2);
  max-width:560px;
}
h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
h3{font-size:20px;line-height:1.35;font-weight:600;}
h4{font-size:17px;line-height:1.4;font-weight:600;}
.idx{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--primary);
  display:inline-block;
  margin-right:10px;
  vertical-align:middle;
}

/* ---------- intro cards (3 horizontal) ---------- */
.card-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.info-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.info-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-1);
}
.info-card .num{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:var(--r-full);
  align-self:flex-start;
}
.info-card h3{font-size:18px;}
.info-card p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.info-card .arrow{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  min-height:44px;
}
.info-card .arrow svg{transition:transform var(--ease);}
.info-card:hover .arrow svg{transform:translateX(3px);}

/* ---------- long article (single column) ---------- */
.longform{
  max-width:820px;
  margin:0 auto;
}
.long-block{
  padding:36px 0;
  border-top:1px solid var(--line);
}
.long-block:first-of-type{border-top:none;padding-top:0;}
.long-block h2{
  font-size:clamp(20px,2.2vw,26px);
  margin-bottom:18px;
  display:flex;
  align-items:baseline;
  gap:12px;
}
.long-block h2::before{
  content:"";
  flex:0 0 3px;
  align-self:stretch;
  min-height:22px;
  border-radius:3px;
  background:var(--accent);
}
.long-block p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:16px;
}
.long-block p:last-child{margin-bottom:0;}
.long-block strong{color:var(--text);font-weight:600;}
.figure{
  margin:26px 0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--surface);
}
.figure img{
  width:100%;
  height:auto;
  object-fit:cover;
}
.figure figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  padding:12px 16px;
  border-top:1px solid var(--line);
}
.spec-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  margin:22px 0;
}
.spec-item{
  background:var(--surface);
  padding:16px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.spec-item:nth-child(4n+3),.spec-item:nth-child(4n+4){background:var(--surface-2);}
.spec-item .k{font-size:14px;color:var(--text-2);}
.spec-item .v{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--text);
}
.tip-line{
  display:flex;
  gap:12px;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:var(--surface-2);
  border-left:3px solid var(--primary);
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin:22px 0;
}
.tip-line b{color:var(--text);font-weight:600;}

/* ---------- qa list ---------- */
.qa-list{
  border-top:1px solid var(--line);
}
.qa-item{
  padding:26px 0;
  border-bottom:1px solid var(--line);
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:10px;
}
.qa-item h3{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.qa-item h3 .qmark{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--primary);
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  padding:2px 8px;
  flex-shrink:0;
  margin-top:2px;
}
.qa-item p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  padding-left:46px;
}

/* ---------- CTA panel ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--bg-2);
  padding:48px;
  box-shadow:var(--shadow-1);
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(124,168,255,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(124,168,255,.07) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(90% 90% at 80% 10%,#000 10%,transparent 75%);
  -webkit-mask-image:radial-gradient(90% 90% at 80% 10%,#000 10%,transparent 75%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:40px;
  align-items:center;
}
.cta-inner h2{margin-bottom:10px;}
.cta-inner p{
  font-size:15px;
  color:var(--text-2);
  max-width:520px;
}
.cta-btns{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.qr-box{
  width:140px;
  background:#fff;
  border-radius:var(--r-md);
  padding:10px;
  box-shadow:var(--shadow-2);
}
.qr-box img{
  width:120px;
  height:120px;
  border-radius:6px;
  object-fit:cover;
}
.qr-box span{
  display:block;
  text-align:center;
  font-size:11px;
  color:#3a465c;
  margin-top:6px;
  letter-spacing:.02em;
}

/* ---------- entry buttons row ---------- */
.entry-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:24px;
}
.entry-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:16px 20px;
  min-height:64px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  font-size:15px;
  font-weight:600;
  color:var(--text);
  transition:all var(--ease);
}
.entry-link span.small{
  display:block;
  font-size:12px;
  font-weight:500;
  color:var(--text-3);
  font-family:var(--mono);
  letter-spacing:.03em;
  margin-top:2px;
}
.entry-link svg{color:var(--primary);flex-shrink:0;transition:transform var(--ease);}
.entry-link:hover{
  border-color:var(--line-strong);
  background:var(--surface-2);
  transform:translateY(-2px);
}
.entry-link:hover svg{transform:translateX(3px);}

/* ---------- footer ---------- */
.footer{
  margin-top:32px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;
  overflow:hidden;
}
.footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(124,168,255,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(124,168,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(to bottom,#000,transparent 70%);
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 70%);
  pointer-events:none;
}
.footer .container{position:relative;z-index:1;}
.footer-inner{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer h4{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-2);
  font-weight:600;
  margin-bottom:16px;
  font-family:var(--mono);
}
.f-about,.f-key{
  font-size:14px;
  line-height:1.8;
  color:var(--text-3);
  margin-top:16px;
  max-width:320px;
}
.f-key{color:var(--text-2);}
.f-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.f-links a{
  font-size:14px;
  color:var(--text-2);
  align-self:flex-start;
  transition:color var(--ease),transform var(--ease);
}
.f-links a:hover{color:var(--text);transform:translateX(2px);}
.f-plain{
  font-size:14px;
  color:var(--text-3);
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--text);}

/* ---------- states ---------- */
.skeleton{
  background:var(--surface-2);
  border-radius:var(--r-md);
  position:relative;
  overflow:hidden;
  height:120px;
}
.skeleton::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.06),transparent);
  transform:translateX(-100%);
  animation:shimmer 1.6s infinite;
}
@keyframes shimmer{to{transform:translateX(100%);}}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-md);
  padding:32px;
  text-align:center;
  color:var(--text-3);
  font-size:14px;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding-left:32px;padding-right:32px;}
}
@media (max-width:1023px){
  body{padding-top:88px;}
  .dock-menu{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px;
    background:rgba(12,20,32,.97);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-2);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  .dock-menu.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .dock-menu a{
    height:48px;
    padding:0 14px;
    border-radius:var(--r-sm);
    border-bottom:1px solid var(--line);
  }
  .dock-menu li:last-child a{border-bottom:none;}
  .dock-menu a.active::after{display:none;}
  .burger{display:inline-flex;}
  .icon-btn{display:none;}
  .head-grid{grid-template-columns:minmax(0,1fr);align-items:start;}
  .head-side{padding-bottom:0;}
  .card-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .qr-box{margin:0 auto;}
  .entry-row{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .cta-panel{padding:36px;}
}
@media (max-width:767px){
  body{padding-top:80px;font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .dock-wrap{padding:0 16px;top:12px;}
  .dock{height:56px;padding:0 8px 0 14px;}
  .brand-text{font-size:13px;}
  .brand-mark{width:28px;height:28px;border-radius:9px;}
  .brand-mark svg{width:16px;height:16px;}
  .page-head{padding:36px 0 40px;}
  .h1,h1{font-size:clamp(26px,7vw,34px);}
  .head-cta .btn{width:100%;}
  .card-row{grid-template-columns:1fr;}
  .spec-grid{grid-template-columns:1fr;}
  .spec-item:nth-child(4n+3),.spec-item:nth-child(4n+4){background:var(--surface);}
  .spec-item:nth-child(even){background:var(--surface-2);}
  .qa-item p{padding-left:0;}
  .cta-panel{padding:28px 20px;}
  .cta-btns .btn{width:100%;}
  .footer-inner{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .head-side{flex-wrap:wrap;gap:10px;}
  .meta-chip{flex:1 1 140px;min-width:0;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .long-block{padding:28px 0;}
}
@media (max-width:420px){
  h1{font-size:26px;}
  h2{font-size:21px;}
  .btn{font-size:14px;padding:0 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}