/* roulang page: index */
:root{
  --brand:#FF6B2C;
  --brand-dark:#E2561A;
  --brand-soft:#FFF1E8;
  --ink:#14172B;
  --ink-2:#2B2F45;
  --accent:#00C2A8;
  --star:#FFC53D;
  --body:#4A5068;
  --muted:#8A90A6;
  --bg:#FFFFFF;
  --bg-soft:#F5F7FB;
  --line:#E6E9F2;
  --dark-bg:#0F1224;
  --radius-card:16px;
  --radius-img:14px;
  --radius-input:10px;
  --radius-btn:12px;
  --shadow-card:0 2px 8px rgba(20,23,43,.05);
  --shadow-hover:0 10px 28px rgba(20,23,43,.10);
  --shadow-btn:0 8px 20px rgba(255,107,44,.28);
  --container:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--ink);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(255,107,44,.24);}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-on-dark{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);color:#fff;}
.btn-on-dark:hover{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-sm{min-height:38px;font-size:14px;padding:0 16px;}
.btn-lg{min-height:50px;font-size:16px;padding:0 26px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);background:#fff;transition:all var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);}

.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.link-more span{transition:transform var(--ease);}
.link-more:hover{color:var(--brand-dark);}
.link-more:hover span{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-dark);}
.badge-line{border:1px solid rgba(0,194,168,.45);color:#008E7C;background:rgba(0,194,168,.07);}
.badge-dark{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:#fff;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(20,23,43,.05);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px;}
.header-left{display:flex;align-items:center;gap:28px;flex:1 1 50%;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#FF9558 100%);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(255,107,44,.30);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16.5px;font-weight:800;color:var(--ink);letter-spacing:-0.01em;}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.02em;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:inline-block;padding:8px 12px;border-radius:9px;
  font-size:15px;color:var(--ink-2);font-weight:500;position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.main-nav a:hover{background:var(--bg-soft);color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-search{
  display:flex;align-items:center;gap:6px;
  height:40px;padding:0 6px 0 12px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:#fff;transition:border-color var(--ease),box-shadow var(--ease);
}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
.header-search input{
  border:0;outline:none;background:transparent;width:148px;font-size:14px;color:var(--ink);
}
.header-search input::placeholder{color:var(--muted);}
.header-search button{
  width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  color:var(--muted);transition:all var(--ease);
}
.header-search button:hover{color:var(--brand);background:var(--brand-soft);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:all var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:400;background:#fff;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 260ms ease;
  visibility:hidden;
}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);}
.drawer-body{padding:16px 20px;flex:1;overflow:auto;}
.drawer-body a{
  display:block;padding:14px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-body a.is-active{color:var(--brand);}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ---------- Hero ---------- */
.hero{padding:64px 0 76px;background:linear-gradient(180deg,#FFF9F5 0%,#FFFFFF 78%);position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.35;mask-image:linear-gradient(180deg,#000 0%,transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;}
.hero-copy{max-width:600px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-2);font-weight:600;
  box-shadow:var(--shadow-card);margin-bottom:22px;
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block;}
.hero h1{
  font-size:clamp(30px,4.6vw,50px);font-weight:800;line-height:1.18;letter-spacing:-.02em;color:var(--ink);
  margin-bottom:20px;
}
.hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:17px;line-height:1.7;color:var(--body);margin-bottom:28px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted);}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.hero-meta b{font-weight:600;color:var(--ink-2);font-variant-numeric:tabular-nums;}
.hero-visual{
  position:relative;border-radius:22px;overflow:hidden;min-height:440px;
  display:flex;align-items:center;justify-content:center;padding:36px;
  background:#0F1224;
  box-shadow:0 24px 60px rgba(20,23,43,.20);
}
.hero-visual .hero-back{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.72;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(15,18,36,.86) 0%,rgba(15,18,36,.34) 60%,rgba(255,107,44,.28) 100%);
}
.hero-device{
  position:relative;z-index:2;width:min(270px,72%);border-radius:28px;
  border:8px solid #1D2138;background:#1D2138;overflow:hidden;
  box-shadow:0 20px 44px rgba(0,0,0,.42);
}
.hero-device img{width:100%;height:400px;object-fit:cover;border-radius:20px;}
.hero-tag{
  position:absolute;z-index:3;left:22px;bottom:22px;
  background:rgba(255,255,255,.94);border-radius:12px;padding:10px 14px;
  font-size:13px;color:var(--ink);font-weight:600;box-shadow:0 10px 24px rgba(0,0,0,.22);
}
.hero-tag em{display:block;font-style:normal;font-size:12px;color:var(--muted);font-weight:500;}

/* ---------- 步骤条 ---------- */
.steps{background:var(--ink);color:#fff;padding:34px 0;}
.steps-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  background:rgba(255,107,44,.16);border:1px solid rgba(255,107,44,.42);color:var(--brand);
  font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;
}
.step h3{color:#fff;font-size:16.5px;font-weight:700;margin-bottom:4px;}
.step p{color:rgba(255,255,255,.66);font-size:13.5px;line-height:1.7;margin:0;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-soft{background:var(--bg-soft);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;color:var(--ink);
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);
}
.section-head .lead{margin:10px 0 0;font-size:15px;color:var(--muted);padding-left:16px;max-width:640px;}

/* ---------- 价值区 ---------- */
.value-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.value-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.28;margin-bottom:16px;padding-left:16px;position:relative;}
.value-intro h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}
.value-intro p{font-size:15.5px;color:var(--body);margin-bottom:20px;}
.value-points{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.value-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  position:relative;overflow:hidden;
}
.value-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DCE1EE;}
.value-card:hover::before{transform:scaleX(1);}
.value-card.is-wide{grid-column:span 2;}
.value-card.is-feature{background:var(--brand-soft);border-color:#FFDCC6;}
.value-icon{
  width:44px;height:44px;border-radius:12px;background:var(--bg-soft);color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:19px;font-weight:800;
}
.value-card.is-feature .value-icon{background:#fff;color:var(--brand);}
.value-card h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.value-card p{font-size:14.5px;color:var(--body);margin:0;line-height:1.72;}

/* ---------- 截图轮播 ---------- */
.shots{position:relative;}
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 18px;scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease);
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.shot-card figure{margin:0;}
.shot-card img{width:100%;height:196px;object-fit:cover;}
.shot-body{padding:18px 20px 20px;}
.shot-body h3{font-size:16.5px;font-weight:700;margin-bottom:6px;}
.shot-body p{font-size:13.5px;color:var(--muted);margin:0;}
.carousel-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px;}
.carousel-dots{display:flex;align-items:center;gap:8px;}
.carousel-dots button{width:9px;height:9px;border-radius:999px;background:#D5DAE7;transition:all var(--ease);}
.carousel-dots button.is-active{background:var(--brand);width:26px;}
.carousel-arrows{display:flex;gap:10px;}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;}
.spec-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.28;margin-bottom:16px;padding-left:16px;position:relative;}
.spec-intro h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}
.spec-intro p{font-size:15.5px;color:var(--body);}
.spec-note{
  margin-top:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;font-size:13.5px;color:var(--muted);box-shadow:var(--shadow-card);
}
.spec-rows{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;box-shadow:var(--shadow-card);}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 24px;border-bottom:1px solid var(--line);transition:background-color var(--ease);
}
.spec-row:last-child{border-bottom:0;}
.spec-row:hover{background:var(--brand-soft);}
.spec-label{font-size:14.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.spec-value{font-size:14px;color:var(--body);text-align:right;}
.spec-value small{display:block;font-size:12.5px;color:var(--muted);}

/* ---------- 评价墙 ---------- */
.review-wall{columns:2;column-gap:24px;}
.review-card{
  break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;margin-bottom:24px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  background:var(--brand-soft);color:var(--brand-dark);font-weight:800;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.review-top strong{display:block;font-size:14.5px;color:var(--ink);font-weight:700;}
.review-stars{color:var(--star);font-size:13px;letter-spacing:2px;line-height:1;}
.review-card p{font-size:14.5px;line-height:1.78;margin:0 0 14px;color:var(--body);}
.review-tags{display:flex;flex-wrap:wrap;gap:8px;}
.review-more{text-align:center;margin-top:8px;}

/* ---------- 最新动态 ---------- */
.news-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:start;}
.news-feature{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease);
  position:relative;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-feature img{width:100%;height:250px;object-fit:cover;}
.news-feature-body{padding:24px;}
.news-feature-body h3{font-size:20px;font-weight:700;line-height:1.42;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature:hover h3{color:var(--brand);}
.news-feature-body p{font-size:14.5px;color:var(--body);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-list{display:grid;gap:14px;}
.news-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#DCE1EE;}
.news-item h3{
  font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item:hover h3{color:var(--brand);}
.news-item p{
  font-size:13.5px;color:var(--muted);margin:0 0 12px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--muted);}
.news-empty{
  background:var(--bg-soft);border:1px dashed var(--line);border-radius:var(--radius-card);
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;
}
.news-empty .empty-icon{
  width:52px;height:52px;border-radius:14px;border:1.5px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.news-empty p{color:var(--muted);font-size:14.5px;margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#DCE1EE;}
.faq-item.is-open{border-color:#FFD8C2;box-shadow:0 6px 20px rgba(255,107,44,.08);}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-question:hover{color:var(--brand);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform var(--ease),opacity var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 260ms ease;}
.faq-answer-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--body);}

/* ---------- 下载 CTA 深色带 ---------- */
.download-band{background:var(--dark-bg);color:#fff;padding:80px 0;}
.download-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;}
.download-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px;}
.download-band p{color:rgba(255,255,255,.66);font-size:15px;margin:0 0 18px;max-width:560px;}
.download-meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:rgba(255,255,255,.55);}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;max-width:520px;}
.download-actions .btn{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);color:#fff;}
.download-actions .btn:hover{background:rgba(255,255,255,.2);color:#fff;}
.download-actions .btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.download-actions .btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.62);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.45);}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.55);margin:18px 0 0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.62);font-size:14px;}
.footer-col a:hover{color:var(--brand);}
.footer-note{font-size:13px;line-height:1.85;color:rgba(255,255,255,.5);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.42);flex-wrap:wrap;}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 28px;}
  .hero-inner{gap:32px;}
  .shot-card{flex:0 0 calc((100% - 20px)/2);}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .header-search{display:none;}
  .header-right .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .header-left{flex:1 1 auto;}
  .hero{padding:44px 0 60px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-copy{max-width:none;}
  .hero-visual{min-height:360px;padding:28px;}
  .hero-device img{height:320px;}
  .section{padding:64px 0;}
  .steps-inner{grid-template-columns:1fr;gap:18px;}
  .value-grid,.spec-grid{grid-template-columns:1fr;gap:28px;}
  .value-points{grid-template-columns:1fr 1fr;}
  .news-layout{grid-template-columns:1fr;}
  .review-wall{columns:2;column-gap:18px;}
  .download-inner{grid-template-columns:1fr;gap:24px;}
  .download-actions{justify-content:flex-start;max-width:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-visual{min-height:300px;padding:22px;}
  .hero-device{width:min(220px,74%);}
  .hero-device img{height:270px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .value-points{grid-template-columns:1fr;}
  .value-card.is-wide{grid-column:span 1;}
  .shots-track{gap:14px;}
  .shot-card{flex:0 0 86%;}
  .carousel-arrows{display:none;}
  .review-wall{columns:1;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:6px;padding:16px 18px;}
  .spec-value{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .faq-question{font-size:15.5px;padding:18px 18px;}
  .faq-answer-inner{padding:0 18px 18px;}
  .download-actions .btn{flex:1 1 46%;}
}
@media (max-width:420px){
  .hero-actions .btn{flex:1 1 100%;}
  .download-actions .btn{flex:1 1 100%;}
  .logo-text strong{font-size:15px;}
  .logo-text em{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .value-card:hover,.shot-card:hover,.news-item:hover,.review-card:hover,.news-feature:hover{transform:none;}
}

/* roulang page: article */
:root{
  --brand:#FF6B2C;
  --brand-dark:#E2561A;
  --brand-soft:#FFF1E8;
  --ink:#14172B;
  --ink-2:#2B2F45;
  --accent:#00C2A8;
  --star:#FFC53D;
  --body:#4A5068;
  --muted:#8A90A6;
  --bg:#FFFFFF;
  --bg-soft:#F5F7FB;
  --line:#E6E9F2;
  --dark-bg:#0F1224;
  --radius-card:16px;
  --radius-img:14px;
  --radius-input:10px;
  --radius-btn:12px;
  --shadow-card:0 2px 8px rgba(20,23,43,.05);
  --shadow-hover:0 10px 28px rgba(20,23,43,.10);
  --shadow-btn:0 8px 20px rgba(255,107,44,.28);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-2);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer}
::selection{background:var(--brand-soft);color:var(--brand-dark)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.container-narrow{width:100%;max-width:760px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border:1.5px solid transparent;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;
  text-decoration:none;white-space:nowrap;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:var(--brand-dark);color:#fff}
.btn-primary:active{box-shadow:0 3px 10px rgba(255,107,44,.24)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.10);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.20);color:#fff}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 标签 / 药丸 ---------- */
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;line-height:1;
  background:var(--brand-soft);color:var(--brand-dark);white-space:nowrap;
}
.pill-accent{background:rgba(0,194,168,.10);color:#008B7A;box-shadow:inset 0 0 0 1px rgba(0,194,168,.35)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:500;background:var(--bg-soft);color:var(--ink-2);
  box-shadow:inset 0 0 0 1px var(--line);transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--brand-soft);color:var(--brand-dark)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 12px rgba(20,23,43,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:66px}
.header-left{display:flex;align-items:center;gap:36px;min-width:0}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,#FF8A4C 0%,var(--brand) 100%);
  color:#fff;font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(255,107,44,.26);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo-text em{font-size:11px;font-style:normal;color:var(--muted);letter-spacing:.06em}

.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);text-decoration:none;
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.main-nav a:hover{color:var(--brand)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink);font-weight:700}
.main-nav a.is-active::after{transform:scaleX(1)}

.search-box{position:relative}
.search-box input{
  width:216px;height:40px;padding:0 14px;border-radius:var(--radius-input);
  border:1px solid var(--line);background:var(--bg-soft);color:var(--ink);
  font-size:14px;outline:none;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box input::placeholder{color:var(--muted)}
.search-box input:focus{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;
  background:#fff;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:200;background:#fff;
  display:flex;flex-direction:column;padding:18px 20px 24px;
  transform:translateX(100%);visibility:hidden;
  transition:transform .28s ease,visibility .28s ease;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:22px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{padding:18px 0;flex:1 1 auto;overflow-y:auto}
.drawer-nav li+li{border-top:1px solid var(--line)}
.drawer-nav a{display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--ink);text-decoration:none}
.drawer-nav a:active{color:var(--brand)}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li + li::before{content:"/";color:#C9CEDC}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current span{
  color:var(--muted);max-width:360px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article-head{padding:26px 0 30px;border-bottom:1px solid var(--line)}
.article-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.article-title{
  font-size:clamp(26px,3.6vw,40px);font-weight:800;line-height:1.3;
  letter-spacing:-.02em;color:var(--ink);margin:0 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#D5DAE6}
.article-meta time{font-family:var(--mono);font-size:12.5px;letter-spacing:.02em}

/* ---------- 正文 ---------- */
.article-body{padding:40px 0 66px}
.rich-text{font-size:17px;line-height:1.9;color:var(--body);overflow-wrap:break-word}
.rich-text > *:first-child{margin-top:0}
.rich-text p{margin:0 0 1.15em}
.rich-text strong{color:var(--ink);font-weight:700}
.rich-text a{color:var(--brand-dark);text-decoration:underline;text-decoration-color:rgba(255,107,44,.35);text-underline-offset:3px}
.rich-text a:hover{color:var(--brand);text-decoration-color:var(--brand)}
.rich-text h2{
  position:relative;font-size:clamp(21px,2.4vw,24px);font-weight:700;line-height:1.42;
  color:var(--ink);margin:1.9em 0 .85em;padding-left:15px;
}
.rich-text h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:20px;
  border-radius:2px;background:var(--brand);
}
.rich-text h3{font-size:18px;font-weight:700;color:var(--ink);margin:1.6em 0 .7em;line-height:1.5}
.rich-text h4{font-size:16px;font-weight:700;color:var(--ink-2);margin:1.4em 0 .6em}
.rich-text ul,.rich-text ol{margin:0 0 1.2em}
.rich-text li{position:relative;padding-left:20px;margin-bottom:.55em}
.rich-text li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--brand);
}
.rich-text ol{counter-reset:li}
.rich-text ol li{counter-increment:li;padding-left:28px}
.rich-text ol li::before{
  content:counter(li);width:auto;height:auto;top:0;left:0;border-radius:0;
  background:none;color:var(--brand);font-weight:800;font-size:14px;
  font-family:var(--mono);line-height:2.1;
}
.rich-text blockquote{
  margin:1.5em 0;padding:16px 22px;border-left:3px solid var(--accent);
  background:var(--bg-soft);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.rich-text blockquote p:last-child{margin-bottom:0}
.rich-text img{width:100%;height:auto;border-radius:var(--radius-img);margin:1.5em 0 .75em}
.rich-text figure{margin:1.5em 0}
.rich-text figure img{margin:0 0 .75em}
.rich-text figcaption{font-size:13px;color:var(--muted);text-align:center;line-height:1.7}
.rich-text hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.rich-text code{
  font-family:var(--mono);font-size:.9em;background:var(--bg-soft);
  padding:2px 6px;border-radius:6px;color:var(--brand-dark);
}
.rich-text pre{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.4em 0;
}
.rich-text pre code{background:none;padding:0;color:var(--ink-2)}
.rich-text .table-wrap,.rich-text table{margin:1.5em 0}
.rich-text .table-wrap{border:1px solid var(--line);border-radius:12px;overflow-x:auto}
.rich-text table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.rich-text .table-wrap table{margin:0;border:0;border-radius:0}
.rich-text th{
  background:var(--ink);color:#fff;font-weight:600;text-align:left;
  padding:12px 16px;white-space:nowrap;
}
.rich-text td{padding:12px 16px;border-top:1px solid var(--line);color:var(--body)}

/* ---------- 空状态 ---------- */
.empty-state{
  min-height:220px;border-radius:var(--radius-card);background:var(--bg-soft);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:40px 24px;text-align:center;
}
.empty-state svg{width:44px;height:44px;stroke:var(--brand);fill:none;stroke-width:1.6}
.empty-state h2{font-size:19px;font-weight:700;color:var(--ink)}
.empty-state p{font-size:14.5px;color:var(--muted);max-width:420px}

/* ---------- 文末 ---------- */
.article-foot{padding:0 0 8px}
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:22px 0;border-top:1px solid var(--line)}
.article-tags .label{font-size:13px;color:var(--muted);margin-right:2px}
.article-actions{display:flex;flex-wrap:wrap;gap:20px;padding:16px 0 0;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-dark);font-weight:600}
.text-link::after{content:"→";transition:transform .2s ease}
.text-link:hover{color:var(--brand)}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- 相关推荐 ---------- */
.related{padding:76px 0;background:var(--bg-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{
  position:relative;font-size:clamp(22px,2.8vw,28px);font-weight:700;
  color:var(--ink);line-height:1.3;padding-left:15px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:22px;
  border-radius:2px;background:var(--brand);
}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px;padding-left:15px}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;align-items:center;gap:18px;padding:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#FFD8C3;color:inherit}
.related-thumb{width:126px;height:92px;border-radius:12px;overflow:hidden;flex:0 0 auto;background:var(--bg-soft)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.related-card:hover .related-thumb img{transform:scale(1.04)}
.related-body{min-width:0}
.related-body h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px;transition:color .2s ease}
.related-card:hover .related-body h3{color:var(--brand)}
.related-body p{font-size:14px;line-height:1.7;color:var(--muted)}

/* ---------- 深色 CTA ---------- */
.cta-band{background:var(--dark-bg);padding:76px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-text{max-width:560px}
.cta-text h2{font-size:clamp(22px,2.9vw,30px);font-weight:700;color:#fff;line-height:1.32;margin-bottom:12px}
.cta-text p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.66)}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.cta-meta span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;color:rgba(255,255,255,.72);
  background:rgba(255,255,255,.08);box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.cta-buttons{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.68);padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.48)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li + li{margin-top:11px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col ul a:hover{color:var(--brand)}
.footer-note{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.52)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.68)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container,.container-narrow{padding:0 28px}
  .main-nav ul{gap:22px}
  .search-box input{width:180px}
  .footer-grid{gap:32px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-left{gap:20px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .related-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container,.container-narrow{padding:0 20px}
  .header-inner{min-height:58px}
  .header-right .btn{display:none}
  .article-head{padding:18px 0 24px}
  .article-body{padding:30px 0 52px}
  .rich-text{font-size:16.5px}
  .related{padding:56px 0}
  .cta-band{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-buttons{width:100%}
  .cta-buttons .btn{flex:1 1 100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{min-height:48px}
}
@media (max-width:520px){
  .related-card{flex-direction:column;align-items:flex-start}
  .related-thumb{width:100%;height:150px}
  .breadcrumb .current span{max-width:200px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category1 */
:root{
  --brand:#FF6B2C;
  --brand-dark:#E2561A;
  --brand-soft:#FFF1E8;
  --ink:#14172B;
  --ink-2:#2B2F45;
  --accent:#00C2A8;
  --star:#FFC53D;
  --body:#4A5068;
  --muted:#8A90A6;
  --bg:#FFFFFF;
  --bg-soft:#F5F7FB;
  --line:#E6E9F2;
  --dark-bg:#0F1224;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --sh-card:0 2px 8px rgba(20,23,43,.05);
  --sh-hover:0 10px 28px rgba(20,23,43,.10);
  --sh-btn:0 8px 20px rgba(255,107,44,.28);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
button,input{font:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(20,23,43,.05)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px}
.header-left{display:flex;align-items:center;gap:28px;min-width:0}
.header-right{display:flex;align-items:center;gap:12px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#FF9159);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(255,107,44,.3);
}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-text strong{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.08em}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;display:inline-block;
  padding:9px 12px;border-radius:10px;
  font-size:15px;color:var(--body);white-space:nowrap;
}
.main-nav a:hover{color:var(--brand);background:var(--brand-soft)}
.main-nav a.is-active{color:var(--ink);font-weight:700}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.search-box{
  display:flex;align-items:center;gap:6px;
  height:40px;padding:0 6px 0 12px;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box input{
  width:152px;height:38px;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--muted)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search-box button{
  height:28px;padding:0 12px;border:0;border-radius:8px;
  background:var(--ink);color:#fff;font-size:13px;font-weight:600;
  transition:background-color var(--ease);
}
.search-box button:hover{background:var(--ink-2)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform var(--ease),background-color var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform var(--ease),top var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
.mobile-drawer{
  position:fixed;left:0;right:0;top:66px;bottom:0;z-index:110;
  background:#fff;padding:24px 32px 36px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.drawer-link{
  display:block;padding:14px 4px;font-size:16px;color:var(--ink);font-weight:600;
  border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-cta{margin-top:20px}
.mobile-drawer .drawer-cta .btn{width:100%}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-btn)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,107,44,.24)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-ghost:active{transform:translateY(1px)}
.btn-dark{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24);color:#fff}
.btn-dark:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px)}
.btn-dark:active{transform:translateY(1px)}
.btn-link{color:var(--brand);font-weight:600;padding:0;min-height:auto;border:0;background:none}
.btn-link:hover{color:var(--brand-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;text-decoration-color:var(--brand-soft)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}

/* ============ badge ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 10px;
  border-radius:999px;font-size:12.5px;font-weight:600;line-height:1;
  background:var(--brand-soft);color:var(--brand);
}
.badge-outline{background:transparent;border:1px solid rgba(0,194,168,.5);color:#0A9E8B}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ============ breadcrumb ============ */
.breadcrumb{padding:24px 0 0;font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";color:var(--line)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--muted)}

/* ============ hero ============ */
.cat-hero{padding:34px 0 76px;background:linear-gradient(180deg,var(--bg-soft) 0%,rgba(245,247,251,0) 100%)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--brand)}
.cat-title{
  margin:16px 0 18px;
  font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
}
.cat-sub{font-size:17px;line-height:1.7;color:var(--body);max-width:540px;margin-bottom:28px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex-shrink:0}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;
  min-height:400px;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  box-shadow:0 18px 44px rgba(20,23,43,.14);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(15,18,36,.42) 0%,rgba(15,18,36,.08) 55%,rgba(255,107,44,.18) 100%);
}
.device-frame{
  position:absolute;right:22px;bottom:22px;width:74%;z-index:2;
  background:#fff;border-radius:14px;overflow:hidden;
  box-shadow:0 18px 36px rgba(15,18,36,.32);
}
.device-bar{display:flex;align-items:center;gap:6px;padding:9px 12px;background:#F2F4FA;border-bottom:1px solid var(--line)}
.device-bar i{width:9px;height:9px;border-radius:50%;background:#D6DAE8;display:block}
.device-bar i:first-child{background:var(--brand)}
.device-bar span{margin-left:8px;font-size:11.5px;color:var(--muted);letter-spacing:.02em}
.device-frame img{width:100%;height:210px}
.hero-caption{
  position:absolute;left:24px;top:24px;z-index:2;
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;
  text-shadow:0 2px 10px rgba(15,18,36,.5);
}

/* ============ sections ============ */
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.section-head{max-width:700px;margin-bottom:44px}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:22px;border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--body)}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ============ bento ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.b-card{
  position:relative;grid-column:span 6;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease);
}
.b-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(255,107,44,0));
  opacity:0;transition:opacity var(--ease);
}
.b-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.b-card:hover::before{opacity:1}
.b-card.wide{grid-column:span 7}
.b-card.narrow{grid-column:span 5}
.b-card.accent{background:var(--brand-soft);border-color:rgba(255,107,44,.18)}
.b-card.accent .b-icon{background:#fff;color:var(--brand)}
.b-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.b-card p{font-size:15px;line-height:1.75;color:var(--body)}
.b-icon{
  width:46px;height:46px;border-radius:13px;margin-bottom:18px;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:18px;font-weight:800;
}
.b-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,107,44,.28)}
.step-num{
  font-size:30px;font-weight:800;color:var(--brand);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.step h3{font-size:18px;margin:16px 0 8px}
.step p{font-size:15px;color:var(--body)}

/* ============ strip cards ============ */
.strip-list{display:grid;gap:24px}
.strip{
  display:grid;grid-template-columns:1fr 1fr;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.strip:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.strip-media{position:relative;min-height:280px;overflow:hidden;background:var(--bg-soft)}
.strip-media img{width:100%;height:100%;transition:transform 400ms ease}
.strip:hover .strip-media img{transform:scale(1.03)}
.strip-body{padding:36px 38px;display:flex;flex-direction:column;justify-content:center}
.strip-body h3{font-size:21px;margin-bottom:12px}
.strip-body p{font-size:15.5px;color:var(--body);margin-bottom:16px}
.strip.reverse .strip-media{order:2}
.strip.reverse .strip-body{order:1}
.tick-list{display:grid;gap:10px;margin-top:4px}
.tick-list li{display:flex;gap:10px;font-size:15px;color:var(--body)}
.tick-list li::before{
  content:"";width:8px;height:8px;margin-top:9px;flex-shrink:0;
  border-radius:2px;background:var(--brand);
}

/* ============ compare ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-card);
}
.compare-card.is-primary{border-color:rgba(255,107,44,.3);background:linear-gradient(180deg,var(--brand-soft) 0%,#fff 60%)}
.compare-card h3{display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:18px}
.compare-card h3 .badge{height:24px}
.compare-list{display:grid;gap:14px}
.compare-list li{display:grid;grid-template-columns:80px 1fr;gap:14px;font-size:15px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.compare-list strong{color:var(--ink);font-weight:600}

/* ============ faq ============ */
.faq-list{display:grid;gap:14px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(255,107,44,.3)}
.faq-item.open{box-shadow:var(--sh-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;border:0;background:none;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;border-radius:50%;
  background:var(--brand-soft);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform var(--ease),opacity var(--ease);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15.5px;line-height:1.85;color:var(--body)}

/* ============ cta band ============ */
.cta-band{background:var(--dark-bg);color:#fff;padding:76px 0}
.cta-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin-bottom:18px}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px}
.cta-meta span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid rgba(255,255,255,.16);border-radius:999px;
  font-size:12.5px;color:rgba(255,255,255,.72);
}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.dl-buttons .btn{min-width:132px}

/* ============ footer ============ */
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.7);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.55)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--brand)}

/* ============ responsive ============ */
@media (max-width:1199px){
  .container{padding:0 28px}
  .hero-grid{gap:40px}
  .search-box input{width:118px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:62px}
  .mobile-drawer{top:62px}
  .section{padding:64px 0}
  .cat-hero{padding:24px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{min-height:320px}
  .b-card,.b-card.wide,.b-card.narrow{grid-column:span 12}
  .steps{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .dl-buttons{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .cat-title{font-size:clamp(28px,7vw,34px)}
  .cat-sub{font-size:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:30px}
  .section-head--split{flex-direction:column;align-items:flex-start}
  .steps{grid-template-columns:1fr}
  .strip{grid-template-columns:1fr}
  .strip.reverse .strip-media{order:1}
  .strip.reverse .strip-body{order:2}
  .strip-media{min-height:210px}
  .strip-body{padding:26px 22px}
  .device-frame{position:relative;right:auto;bottom:auto;width:calc(100% - 32px);margin:120px 16px 16px}
  .device-frame img{height:170px}
  .hero-caption{left:18px;top:18px;font-size:14px}
  .hero-visual{min-height:0;padding-bottom:4px}
  .compare-list li{grid-template-columns:1fr;gap:4px}
  .dl-buttons .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:420px){
  .btn{width:100%}
  .btn-row{gap:10px}
  .mobile-drawer{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#FF6B2C;
  --brand-dark:#E2561A;
  --brand-soft:#FFF1E8;
  --ink:#14172B;
  --ink-2:#2B2F45;
  --accent:#00C2A8;
  --star:#FFC53D;
  --body:#4A5068;
  --muted:#8A90A6;
  --bg:#FFFFFF;
  --bg-soft:#F5F7FB;
  --line:#E6E9F2;
  --dark-bg:#0F1224;
  --radius-card:16px;
  --radius-img:14px;
  --radius-input:10px;
  --radius-btn:12px;
  --shadow-card:0 2px 8px rgba(20,23,43,.05);
  --shadow-hover:0 10px 28px rgba(20,23,43,.10);
  --shadow-btn:0 8px 20px rgba(255,107,44,.28);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0;}
.container{
  width:100%;max-width:var(--container);margin:0 auto;
  padding-left:32px;padding-right:32px;
}

/* ============ 按钮系统 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn:active{transform:translateY(1px);box-shadow:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.30);color:#fff;}
.btn-dark:hover{background:rgba(255,255,255,.18);color:#fff;}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
}
.btn-link::after{content:"→";transition:transform .2s ease;}
.btn-link:hover{color:var(--brand-dark);}
.btn-link:hover::after{transform:translateX(3px);}

/* ============ 标签 / 徽章 ============ */
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge-outline{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid rgba(0,194,168,.45);color:#018b79;background:rgba(0,194,168,.07);
}
.dot-accent{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--accent);margin-right:8px;vertical-align:middle;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(20,23,43,.05);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:66px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),#ff9152);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(255,107,44,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.12;}
.logo-text strong{font-size:16px;color:var(--ink);font-weight:800;letter-spacing:-.2px;}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.6px;}
.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--ink-2);font-weight:500;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;
  height:2px;background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-side{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box{position:relative;}
.search-box input{
  height:40px;width:196px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-input);
  background:#fff;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:150;
  background:rgba(15,18,36,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,340px);
  background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .26s ease;
  box-shadow:-10px 0 30px rgba(20,23,43,.16);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:18px;line-height:1;cursor:pointer;
}
.drawer-nav{padding:14px 20px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1;}
.drawer-nav a{
  padding:13px 12px;border-radius:12px;font-size:15.5px;color:var(--ink-2);font-weight:500;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.drawer-foot{padding:16px 20px 22px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;min-height:48px;}

/* ============ 板块通用 ============ */
.section{padding:84px 0;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,3.2vw,34px);
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;
  width:4px;height:22px;border-radius:3px;background:var(--brand);
}
.section-head p{margin-top:14px;color:var(--body);font-size:16px;}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  background:
    radial-gradient(circle at 88% 12%,rgba(0,194,168,.10),transparent 46%),
    radial-gradient(circle at 6% 90%,rgba(255,107,44,.09),transparent 44%),
    var(--bg-soft);
}
.cat-hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:52px;align-items:center;
}
.cat-hero h1{
  font-size:clamp(28px,3.9vw,42px);
  font-weight:800;letter-spacing:-.02em;line-height:1.2;
  margin:18px 0 16px;
}
.cat-hero .lead{
  font-size:17px;color:var(--ink-2);max-width:520px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.hero-meta b{color:var(--ink-2);font-weight:600;}
.cat-hero-visual{position:relative;}
.cat-hero-visual .visual-frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-hover);
}
.cat-hero-visual img{width:100%;height:328px;object-fit:cover;border-radius:var(--radius-card);}
.visual-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(15,18,36,.82);color:#fff;
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;
}

/* ============ 核心要点 Bento ============ */
.bento{display:grid;grid-template-columns:1.12fr .88fr;gap:22px;}
.bento-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.bento-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  border-radius:var(--radius-card) var(--radius-card) 0 0;
  background:linear-gradient(90deg,var(--brand),rgba(255,107,44,0));
  opacity:0;transition:opacity .2s ease;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.bento-card:hover::before{opacity:1;}
.bento-card.is-featured{background:var(--brand-soft);border-color:rgba(255,107,44,.22);}
.bento-span{grid-column:1 / -1;}
.bento-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:20px;font-weight:800;
  margin-bottom:16px;
}
.bento-card.is-featured .bento-icon{background:#fff;}
.bento-card h3{font-size:19px;margin-bottom:10px;}
.bento-card p{font-size:15px;color:var(--body);margin:0;}
.bento-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.bento-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--body);}
.bento-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}

/* ============ 大图 + 两列信息块 ============ */
.showcase-figure{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  margin-bottom:30px;
}
.showcase-figure img{width:100%;height:360px;object-fit:cover;transition:transform .3s ease;}
.showcase-figure:hover img{transform:scale(1.03);}
.showcase-caption{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;margin-top:14px;font-size:13.5px;color:var(--muted);
}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.info-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.info-block:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.info-block h3{font-size:18px;margin-bottom:12px;}
.info-block p{font-size:15px;margin:0 0 14px;}
.info-block .meta-row{
  display:flex;justify-content:space-between;gap:12px;
  padding:10px 0;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.info-block .meta-row b{color:var(--ink-2);font-weight:600;}

/* ============ 安装步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-num{
  font-family:var(--mono);font-size:26px;font-weight:800;
  color:var(--brand);letter-spacing:-.5px;line-height:1;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;margin:0;}

/* ============ 设备适配行式规格 ============ */
.spec-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:start;}
.spec-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 24px;box-shadow:var(--shadow-card);
}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 8px;border-bottom:1px solid var(--line);
  border-radius:10px;transition:background-color .2s ease;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:hover{background:var(--brand-soft);}
.spec-label{display:flex;align-items:center;font-size:15px;color:var(--ink);font-weight:600;}
.spec-value{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--body);text-align:right;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(255,107,44,.35);}
.faq-item.is-open{border-color:rgba(255,107,44,.45);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15px;line-height:1.8;color:var(--body);}

/* ============ CTA 深色带 ============ */
.cta-band{
  background:var(--dark-bg);color:#fff;
  padding:88px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin-top:14px;max-width:560px;}
.cta-version{
  display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:22px;
  font-size:13px;color:rgba(255,255,255,.58);
}
.cta-version b{color:rgba(255,255,255,.88);font-weight:600;font-family:var(--mono);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-actions .btn{min-width:132px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark-bg);color:rgba(255,255,255,.72);
  padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.2px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.70);}
.footer-col a:hover{color:var(--brand);}
.footer-note{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.56);margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding-top:24px;font-size:13px;color:rgba(255,255,255,.50);
}
.footer-bottom a{color:rgba(255,255,255,.68);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding-left:28px;padding-right:28px;}
  .section{padding:72px 0;}
  .cat-hero-grid{gap:40px;}
  .cat-hero-visual img{height:296px;}
  .search-box input{width:168px;}
  .main-nav ul{gap:20px;}
}
@media (max-width:991px){
  .main-nav,.search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{min-height:60px;}
  .section{padding:64px 0;}
  .cat-hero{padding:44px 0 52px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero-visual img{height:280px;}
  .bento{grid-template-columns:1fr;}
  .two-col{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .spec-grid{grid-template-columns:1fr;gap:32px;}
  .showcase-figure img{height:300px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:48px 0;}
  .logo-text strong{font-size:15px;}
  .cat-hero h1{font-size:clamp(26px,7vw,32px);}
  .cat-hero .lead{font-size:16px;}
  .cat-hero-visual img{height:230px;}
  .hero-actions .btn{flex:1 1 100%;min-height:48px;}
  .steps{grid-template-columns:1fr;}
  .showcase-figure img{height:220px;}
  .spec-list{padding:4px 16px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:6px;padding:16px 6px;}
  .spec-value{text-align:left;}
  .cta-band{padding:60px 0;}
  .cta-actions .btn{flex:1 1 calc(50% - 6px);min-width:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:420px){
  .cta-actions .btn{flex:1 1 100%;}
  .hero-meta{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}