/* roulang page: index */
/* ================= 设计令牌 ================= */
:root{
  --brand:#00D68F;
  --brand-2:#22E8A4;
  --brand-deep:#0A9E6C;
  --purple:#7B5CFF;
  --purple-soft:#A695FF;
  --yellow:#FFD24A;
  --coral:#FF5A6E;
  --bg:#0A0F0D;
  --panel:#121A16;
  --panel-2:#16211C;
  --light:#F4F7F5;
  --txt:#EAF3EE;
  --txt-2:#A8B8B0;
  --txt-3:#6F8078;
  --ink:#0A0F0D;
  --ink-2:#3E4F47;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 6px 20px rgba(0,0,0,.38);
  --sh-hover:0 12px 28px rgba(0,214,143,.16);
  --sh-light:0 8px 24px rgba(10,15,13,.10);
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1280px;

  --bs-primary:#00D68F;
  --bs-primary-rgb:0,214,143;
  --bs-body-bg:#0A0F0D;
  --bs-body-color:#EAF3EE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#00D68F;
  --bs-link-hover-color:#22E8A4;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}
@media (min-width:1600px){:root{--maxw:1320px}}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.78;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.3;color:var(--txt)}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:700}
h3{font-size:21px;font-weight:600;line-height:1.42}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ================= 容器 ================= */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
@media (max-width:1199.98px){.section{padding:80px 0}}
@media (max-width:991.98px){.section{padding:72px 0}.section-tight{padding:60px 0}}
@media (max-width:767.98px){.section{padding:56px 0}.section-tight{padding:48px 0}}

.dot-grid{background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);background-size:8px 8px}
.reveal{transition:opacity .5s ease-out,transform .5s ease-out}
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal,.js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ================= 区块标题 ================= */
.sec-head{max-width:760px}
.sec-head h2{position:relative;padding-left:15px}
.sec-head h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand)}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--txt-2);max-width:660px}
.sec-tag{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.1em;color:var(--brand);margin-bottom:12px;text-transform:uppercase}
.sec-tag::before{content:"";width:20px;height:2px;background:var(--brand)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
@media (max-width:767.98px){.sec-head-row{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:28px}}

/* ================= 按钮 ================= */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--brand);color:#04120C;font-size:15px;font-weight:700;
  border:1px solid transparent;transition:all .18s ease-out;
}
.btn-main:hover{background:var(--brand-2);color:#04120C;box-shadow:0 0 0 4px rgba(0,214,143,.16);transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid var(--line-2);background:transparent;color:var(--txt);
  font-size:15px;font-weight:600;transition:all .18s ease-out;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(0,214,143,.12)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);padding-bottom:2px;border-bottom:1px solid transparent}
.btn-text:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}
.btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid rgba(10,15,13,.18);background:transparent;color:var(--ink);font-size:14.5px;font-weight:600;transition:all .18s ease-out}
.btn-line:hover{border-color:var(--brand-deep);color:var(--brand-deep);background:rgba(10,158,108,.08)}

/* ================= 徽章 / 标签 ================= */
.badge-pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.badge-green{background:rgba(0,214,143,.12);color:var(--brand)}
.badge-purple{background:rgba(123,92,255,.16);color:var(--purple-soft)}
.badge-yellow{background:rgba(255,210,74,.14);color:var(--yellow)}
.badge-red{background:rgba(255,90,110,.14);color:var(--coral)}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(10,15,13,.88);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.site-header.is-solid{background:rgba(10,15,13,.98);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--txt)}
.brand:hover{color:var(--txt)}
.brand-mark{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#04120C;font-size:17px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:10.5px;letter-spacing:.16em;color:var(--txt-3)}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.main-nav .nav-link{
  position:relative;padding:9px 12px;border-radius:8px;
  font-size:14.5px;color:var(--txt-2);white-space:nowrap;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.main-nav .nav-link:hover{color:var(--txt);background:rgba(255,255,255,.045)}
.main-nav .nav-link.is-active{color:var(--brand)}
.main-nav .nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{position:absolute;left:12px;font-size:12.5px;color:var(--txt-3);pointer-events:none}
.nav-search input{
  width:196px;height:38px;padding:0 12px 0 34px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-btn);font-size:13.5px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search input::placeholder{color:var(--txt-3)}
.nav-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,214,143,.16);outline:none}
.tool-link{font-size:14px;color:var(--txt-2);padding:8px 4px}
.tool-link:hover{color:var(--brand)}
.btn-ghost-sm{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line-2);background:transparent;color:var(--txt);
  font-size:13.5px;font-weight:600;transition:all .18s ease-out;
}
.btn-ghost-sm:hover{border-color:var(--brand);color:var(--brand);background:rgba(0,214,143,.12)}
.btn-primary-sm{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--brand);color:#04120C;font-size:13.5px;font-weight:700;border:1px solid transparent;
  transition:all .18s ease-out;
}
.btn-primary-sm:hover{background:var(--brand-2);color:#04120C;box-shadow:0 0 0 4px rgba(0,214,143,.16)}
.nav-toggle{
  display:none;width:40px;height:40px;place-items:center;border-radius:var(--r-btn);
  border:1px solid var(--line-2);background:transparent;color:var(--txt);font-size:15px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
@media (max-width:1199.98px){
  .nav-search input{width:150px}
  .main-nav .nav-link{padding:9px 9px;font-size:14px}
}
@media (max-width:991.98px){
  .nav-search,.tool-link,.btn-ghost-sm{display:none}
  .nav-toggle{display:grid}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;margin-left:0;flex-direction:column;align-items:stretch;gap:2px;
    background:#0C1210;border-bottom:1px solid var(--line);padding:12px 16px 22px;
    max-height:calc(100vh - 72px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
    box-shadow:0 18px 34px rgba(0,0,0,.5);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .main-nav .nav-link{padding:14px 14px;font-size:15px;border-radius:10px}
  .main-nav .nav-link.is-active{background:rgba(0,214,143,.12)}
  .main-nav .nav-link.is-active::after{display:none}
}

/* ================= 首屏 Hero ================= */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 78px;
  background-image:linear-gradient(180deg,rgba(10,15,13,.86),rgba(10,15,13,.96)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:8px 8px;opacity:.7;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.22}
.hero h1 span{color:var(--brand)}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--txt-2);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.stat-chip{padding-right:26px;margin-right:26px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.stat-chip:last-child{border-right:0;padding-right:0;margin-right:0}
.stat-chip b{font-family:var(--mono);font-size:clamp(22px,2.4vw,28px);font-weight:800;color:var(--brand);line-height:1}
.stat-chip span{font-size:12.5px;color:var(--txt-3)}
.hero-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(0,214,143,.5),transparent)}
.phone-wrap{display:flex;justify-content:center}
.phone{
  position:relative;width:100%;max-width:296px;aspect-ratio:9/18.2;
  border-radius:28px;border:1px solid var(--line-2);
  box-shadow:0 20px 44px rgba(0,0,0,.55);
  overflow:hidden;background:#0F1613;
}
.phone::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,15,13,.6),rgba(10,15,13,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.phone-screen{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;padding:20px 18px 22px}
.phone-status{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;color:var(--txt-3);padding-bottom:12px;border-bottom:1px solid var(--line)}
.phone-label{margin-top:20px;font-size:11.5px;letter-spacing:.14em;color:var(--txt-3)}
.phone-title{margin-top:6px;font-size:16px;font-weight:700;color:var(--txt)}
.pbar{margin-top:16px}
.pbar-top{display:flex;justify-content:space-between;font-size:12px;color:var(--txt-2);margin-bottom:7px}
.pbar-top b{font-family:var(--mono);color:var(--brand);font-weight:700}
.pbar-track{height:6px;border-radius:6px;background:rgba(255,255,255,.08);overflow:hidden}
.pbar-fill{height:100%;border-radius:6px;background:var(--brand)}
.pbar-fill.alt{background:var(--purple)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:20px}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(0,214,143,.12);color:var(--brand);border:1px solid rgba(0,214,143,.28)}
.chip.violet{background:rgba(123,92,255,.16);color:var(--purple-soft);border-color:rgba(123,92,255,.32)}
@media (max-width:991.98px){
  .hero{padding:56px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .phone{max-width:270px}
}
@media (max-width:575.98px){
  .hero-sub{font-size:15.5px}
  .hero-stats{gap:18px}
  .stat-chip{padding-right:0;margin-right:0;border-right:0;width:calc(50% - 9px)}
}

/* ================= 价值主张指标条 ================= */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.metric{background:var(--bg);padding:34px 26px}
.metric b{display:block;font-family:var(--mono);font-size:clamp(28px,3.2vw,42px);font-weight:800;line-height:1;color:var(--brand);letter-spacing:-.02em}
.metric b em{font-family:inherit;font-style:normal;font-size:.5em;color:var(--txt-2);margin-left:4px;font-weight:700}
.metric strong{display:block;margin-top:14px;font-size:14.5px;font-weight:700;color:var(--txt)}
.metric p{margin-top:8px;font-size:13px;line-height:1.7;color:var(--txt-3)}
@media (max-width:991.98px){.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.metrics{grid-template-columns:1fr}.metric{padding:26px 22px}}

/* ================= 功能分组 ================= */
.feature-layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:40px;align-items:start}
.feature-tabs{display:flex;flex-direction:column;gap:8px;position:sticky;top:96px}
.feature-tab{
  text-align:left;padding:16px 18px;border-radius:12px;border:1px solid transparent;
  background:transparent;color:var(--txt-2);font-size:15px;font-weight:600;
  transition:all .18s ease-out;
}
.feature-tab small{display:block;margin-top:4px;font-size:12px;font-weight:400;color:var(--txt-3);letter-spacing:.02em}
.feature-tab:hover{background:var(--panel);color:var(--txt)}
.feature-tab.is-active{background:var(--panel);border-color:rgba(0,214,143,.4);color:var(--brand)}
.feature-tab.is-active small{color:var(--txt-2)}
.feature-panels{display:block}
.feature-block{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px;align-items:center;
  padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.feature-block[hidden]{display:none}
.feature-block.rev .feature-media{order:-1}
.feature-block h3{margin-bottom:12px}
.feature-block p{font-size:14.8px;color:var(--txt-2);line-height:1.8}
.dot-list{margin-top:18px}
.dot-list li{position:relative;padding-left:20px;margin-bottom:10px;font-size:14.3px;color:var(--txt-2)}
.dot-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.media-box{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:rgba(0,214,143,.08);border:1px solid var(--line)}
.media-box img{width:100%;height:100%;object-fit:cover}
@media (max-width:991.98px){
  .feature-layout{grid-template-columns:1fr;gap:24px}
  .feature-tabs{position:static;flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;margin:0 -24px;padding-left:24px;padding-right:24px}
  .feature-tab{flex:0 0 auto;padding:12px 16px}
  .feature-tab small{display:none}
  .feature-block{grid-template-columns:1fr;gap:22px;padding:22px}
  .feature-block.rev .feature-media{order:0}
}

/* ================= 使用场景 ================= */
.scene-rail{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:rgba(0,214,143,.4)}
.scene-card .media-box{border:0;border-radius:0;border-bottom:1px solid var(--line)}
.scene-body{padding:24px 22px 26px}
.scene-num{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;color:var(--brand)}
.scene-body h3{margin-top:10px;font-size:19px}
.scene-body p{margin-top:10px;font-size:14.3px;color:var(--txt-2);line-height:1.75}
@media (max-width:991.98px){
  .scene-rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;margin:0 -24px;padding:4px 24px 12px}
  .scene-card{flex:0 0 288px;scroll-snap-align:start}
}

/* ================= 用户案例（浅色区） ================= */
.section-light{background:var(--light);color:var(--ink)}
.section-light h2,.section-light h3{color:var(--ink)}
.section-light .sec-head p{color:#4A5A52}
.section-light .sec-tag{color:var(--brand-deep)}
.section-light .sec-tag::before{background:var(--brand-deep)}
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.case-card{
  background:#fff;border:1px solid rgba(10,15,13,.06);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--sh-light);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.case-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(10,15,13,.14)}
.case-card .big{font-family:var(--mono);font-size:40px;font-weight:800;line-height:1;color:var(--brand-deep);letter-spacing:-.02em}
.case-card .big span{font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;font-weight:600;color:#5C6B63;margin-left:6px;letter-spacing:0}
.case-card blockquote{margin:20px 0 0;padding:0;font-size:15.5px;line-height:1.8;color:#22302A}
.case-src{display:flex;align-items:center;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid rgba(10,15,13,.08);font-size:13px;color:#5C6B63}
.case-src img{width:32px;height:32px;border-radius:50%;object-fit:cover}
@media (max-width:991.98px){.case-grid{grid-template-columns:1fr;gap:18px}}

/* ================= 版本对比 ================= */
.plan-table{display:grid;grid-template-columns:minmax(0,2.2fr) repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--panel)}
.plan-cell{padding:17px 20px;border-bottom:1px solid var(--line);font-size:14.3px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--txt-2)}
.plan-cell.name{justify-content:flex-start;text-align:left;color:var(--txt);padding-left:26px}
.plan-table .plan-cell:nth-last-child(-n+4){border-bottom:0}
.plan-head .plan-cell{padding-top:26px;padding-bottom:20px;font-weight:700;color:var(--txt);font-size:15px;flex-direction:column;gap:8px}
.plan-mid{background:rgba(0,214,143,.05);border-left:1px solid rgba(0,214,143,.35);border-right:1px solid rgba(0,214,143,.35)}
.plan-mid-tip{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:var(--yellow);color:#241B00;font-size:11.5px;font-weight:700}
.plan-price{font-family:var(--mono);font-size:20px;font-weight:800;color:var(--brand)}
.plan-note{margin-top:16px;font-size:12.5px;color:var(--txt-3)}
@media (max-width:767.98px){
  .plan-table{grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr))}
  .plan-cell{padding:14px 8px;font-size:12.5px}
  .plan-cell.name{padding-left:14px;font-size:13px}
  .plan-head .plan-cell{font-size:13px;padding-top:20px}
}

/* ================= 最新信息（CMS） ================= */
.cms-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cms-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.cms-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:rgba(0,214,143,.4)}
.cms-card-link{display:flex;flex-direction:column;height:100%;padding:24px 24px 20px;color:inherit}
.cms-card-link:hover{color:inherit}
.cms-card h3{font-size:17.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-sum{margin-top:12px;font-size:14px;line-height:1.75;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px}
.cms-date{font-family:var(--mono);font-size:12.5px;color:var(--txt-3)}
.cms-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:18px;
  padding:56px 24px;border:1px dashed var(--line-2);border-radius:var(--r-card);
  background:var(--panel);text-align:center;
}
.cms-empty p{font-size:15px;color:var(--txt-2);margin:0}
@media (max-width:767.98px){.cms-grid{grid-template-columns:1fr}}

/* ================= FAQ ================= */
.faq{max-width:900px}
.faq .accordion-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden}
.faq .accordion-item:last-child{margin-bottom:0}
.faq .accordion-button{
  background:transparent;color:var(--txt);font-size:15.5px;font-weight:600;line-height:1.6;
  padding:20px 22px;box-shadow:none;display:flex;align-items:center;gap:16px;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:transparent}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid rgba(0,214,143,.5);outline-offset:-2px}
.faq .accordion-button::after{
  content:"+";flex:0 0 auto;display:grid;place-items:center;
  width:26px;height:26px;border-radius:999px;border:1px solid var(--line-2);
  font-size:15px;line-height:1;color:var(--txt-2);
  background-image:none;transform:none;margin-left:auto;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.faq .accordion-button:not(.collapsed)::after{content:"−";color:var(--brand);border-color:var(--brand)}
.faq .accordion-body{padding:0 22px 22px;font-size:14.5px;line-height:1.85;color:var(--txt-2)}

/* ================= 底部 CTA ================= */
.cta-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(10,15,13,.94),rgba(10,15,13,.72)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:72px 0;
}
.cta-inner{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px;align-items:center;position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,2.8vw,34px)}
.cta-copy p{margin-top:14px;font-size:15.5px;color:var(--txt-2);max-width:520px}
.cta-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center}
.cta-form input{
  height:48px;padding:0 16px;background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);border-radius:var(--r-btn);font-size:14.5px;width:100%;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
}
.cta-form input::placeholder{color:var(--txt-3)}
.cta-form input:focus{border-color:var(--brand);background:rgba(0,214,143,.06);box-shadow:0 0 0 4px rgba(0,214,143,.16);outline:none}
.form-note{grid-column:1/-1;font-size:12px;color:var(--txt-3);margin:0}
@media (max-width:991.98px){
  .cta-band{padding:56px 0}
  .cta-inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575.98px){
  .cta-form{grid-template-columns:1fr}
  .cta-form .btn-main{width:100%}
}

/* ================= 页脚 ================= */
.site-footer{background:#080C0A;border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,4.5fr) minmax(0,2.2fr) minmax(0,2.6fr) minmax(0,2.7fr);gap:40px}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:var(--txt-3);max-width:380px}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--txt);margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--txt-2)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--txt-3);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--txt-3);
}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){.site-footer{padding-top:52px}.footer-grid{grid-template-columns:1fr}}

/* ================= 移动端底部操作条 ================= */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;display:none;align-items:center;gap:10px;
  padding:10px 16px;background:rgba(10,15,13,.97);border-top:1px solid var(--line);
  transform:translateY(104%);transition:transform .24s ease-out;
}
.mobile-bar.is-show{transform:translateY(0)}
.mobile-bar .btn-main{flex:1 1 auto;height:44px}
.bar-icon{
  display:grid;place-items:center;width:44px;height:44px;flex:0 0 44px;border-radius:var(--r-btn);
  border:1px solid var(--line-2);background:transparent;color:var(--txt);font-size:15px;
}
.bar-icon:hover{border-color:var(--brand);color:var(--brand)}
@media (max-width:767.98px){.mobile-bar{display:flex}}

/* roulang page: article */
:root{
  --brand:#00D68F;
  --brand-hi:#22E8A4;
  --violet:#7B5CFF;
  --yellow:#FFD24A;
  --danger:#FF5A6E;
  --bg:#0A0F0D;
  --panel:#121A16;
  --panel-2:#16201B;
  --light:#F4F7F5;
  --text:#EAF3EE;
  --muted:#A8B8B0;
  --dim:#6F8078;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 6px 20px rgba(0,0,0,.38);
  --shadow-hover:0 12px 28px rgba(0,214,143,.16);
  --shadow-light:0 8px 24px rgba(10,15,13,.10);
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-primary:var(--brand);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:var(--brand-hi);
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background-color:var(--bg);
  background-image:radial-gradient(rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:8px 8px;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-hi);}
ul,ol{padding-left:1.25em;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-0.01em;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
@media (min-width:1600px){.wrap{max-width:1320px;}}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn-primary,
.btn-primary-sm,
.btn-ghost-sm,
.btn-outline,
.btn-text,
.btn-icon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
  cursor:pointer;
  white-space:nowrap;
}
.btn-primary{
  padding:14px 26px;font-size:16px;
  background:var(--brand);color:#06231A;border-color:var(--brand);
}
.btn-primary:hover,.btn-primary:focus-visible{
  background:var(--brand-hi);border-color:var(--brand-hi);color:#06231A;
  box-shadow:0 0 0 4px rgba(0,214,143,.16);
}
.btn-primary-sm{
  padding:10px 18px;font-size:14px;
  background:var(--brand);color:#06231A;border-color:var(--brand);
}
.btn-primary-sm:hover,.btn-primary-sm:focus-visible{
  background:var(--brand-hi);border-color:var(--brand-hi);color:#06231A;
  box-shadow:0 0 0 4px rgba(0,214,143,.16);
}
.btn-ghost-sm{
  padding:10px 16px;font-size:14px;
  background:transparent;color:var(--text);border-color:var(--line-strong);
}
.btn-ghost-sm:hover,.btn-ghost-sm:focus-visible{
  background:rgba(0,214,143,.12);border-color:var(--brand);color:var(--brand);
}
.btn-outline{
  padding:13px 24px;font-size:15px;
  background:transparent;color:var(--brand);border-color:var(--brand);
}
.btn-outline:hover,.btn-outline:focus-visible{
  background:rgba(0,214,143,.12);color:var(--brand-hi);
  box-shadow:0 0 0 4px rgba(0,214,143,.12);
}
.btn-text{
  padding:6px 2px;font-size:15px;background:transparent;color:var(--brand);
  border:0;border-bottom:1px solid rgba(0,214,143,.5);border-radius:0;
}
.btn-text:hover,.btn-text:focus-visible{color:var(--brand-hi);border-bottom-color:var(--brand-hi);}
.btn-icon{
  width:46px;height:46px;background:var(--panel);color:var(--text);border-color:var(--line);
}
.btn-icon:hover{background:rgba(0,214,143,.12);border-color:var(--brand);color:var(--brand);}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1.5;
  background:rgba(0,214,143,.12);color:var(--brand);
}
.badge-soft.is-violet{background:rgba(123,92,255,.14);color:#B6A4FF;}
.badge-soft.is-yellow{background:rgba(255,210,74,.14);color:var(--yellow);}
.badge-soft.is-danger{background:rgba(255,90,110,.14);color:var(--danger);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,15,13,.78);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(10,15,13,.94);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#0FA877);
  color:#06231A;font-size:16px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:0;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--dim);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;}
.main-nav .nav-link{
  position:relative;
  padding:8px 12px;border-radius:8px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:color .18s ease;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.main-nav .nav-link:hover{color:var(--text);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.is-active{color:var(--brand);}
.main-nav .nav-link.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  position:relative;display:flex;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 12px;height:40px;width:198px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,214,143,.12);}
.nav-search i{color:var(--dim);font-size:13px;}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text);font-size:13.5px;padding:0 0 0 8px;
}
.nav-search input::placeholder{color:var(--dim);}
.tool-link{font-size:14px;color:var(--muted);}
.tool-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text);font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 页头 / 面包屑 ---------- */
.page-head{
  padding:36px 0 8px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(0,214,143,.06),transparent 70%),
    var(--bg);
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--dim);}
.crumb a{color:var(--dim);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:rgba(255,255,255,.22);}
.crumb .now{color:var(--brand);}
.article-head{padding:22px 0 30px;max-width:880px;}
.article-head .kicker{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.article-head h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;letter-spacing:-0.02em;line-height:1.22;
  margin-bottom:18px;
}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--muted);}
.meta-row .item{display:inline-flex;align-items:center;gap:7px;}
.meta-row .item i{color:var(--brand);font-size:12.5px;}
.meta-row time{font-family:var(--mono);}

/* ---------- 正文布局 ---------- */
.article-body{padding:56px 0 72px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,760px) 300px;
  gap:56px;
  justify-content:space-between;
  align-items:start;
}
.article-main{min-width:0;}
.entry-content{
  font-size:16px;line-height:1.9;color:var(--text);
  word-wrap:break-word;overflow-wrap:break-word;
}
.entry-content > *:first-child{margin-top:0;}
.entry-content p{margin:0 0 1.1em;color:#DCE7E1;}
.entry-content h2{
  position:relative;padding-left:16px;
  margin:2.1em 0 .85em;
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;
}
.entry-content h2::before{
  content:"";position:absolute;left:0;top:.2em;width:3px;height:1em;
  background:var(--brand);border-radius:2px;
}
.entry-content h3{
  position:relative;padding-left:15px;
  margin:1.8em 0 .7em;
  font-size:20px;font-weight:600;line-height:1.45;
}
.entry-content h3::before{
  content:"";position:absolute;left:0;top:.5em;width:7px;height:7px;
  background:var(--violet);border-radius:2px;
}
.entry-content h4{margin:1.4em 0 .6em;font-size:17px;font-weight:600;}
.entry-content ul,.entry-content ol{margin:0 0 1.2em;padding-left:1.35em;}
.entry-content li{margin-bottom:.5em;line-height:1.85;}
.entry-content li::marker{color:var(--brand);}
.entry-content a{color:var(--brand);border-bottom:1px solid rgba(0,214,143,.35);}
.entry-content a:hover{color:var(--brand-hi);border-bottom-color:var(--brand-hi);}
.entry-content strong{color:#FFFFFF;font-weight:700;}
.entry-content blockquote{
  margin:1.6em 0;padding:16px 22px;
  border-left:3px solid var(--brand);
  background:rgba(0,214,143,.06);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--muted);
}
.entry-content blockquote p:last-child{margin-bottom:0;}
.entry-content img{
  display:block;max-width:100%;height:auto;
  margin:1.7em auto;border-radius:var(--r-img);
  border:1px solid var(--line);
}
.entry-content figure{margin:1.7em 0;}
.entry-content figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--dim);
}
.entry-content table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  font-size:15px;border:1px solid var(--line);border-radius:var(--r-img);
  overflow:hidden;
}
.entry-content thead th{
  background:rgba(0,214,143,.10);color:var(--text);
  font-weight:600;text-align:left;
}
.entry-content th,.entry-content td{
  padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.entry-content tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.entry-content tbody tr:last-child td{border-bottom:0;}
.entry-content pre{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-img);
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;color:#CFE7DC;
}
.entry-content code{
  font-family:var(--mono);font-size:.92em;
  background:rgba(0,214,143,.10);color:var(--brand-hi);
  padding:2px 6px;border-radius:6px;
}
.entry-content pre code{background:transparent;color:inherit;padding:0;}
.entry-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:var(--panel);padding:52px 28px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--dim);margin-bottom:16px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;max-width:460px;margin:0 auto 22px;}

/* ---------- 正文底部操作 ---------- */
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
}
.post-nav-link{
  display:flex;flex-direction:column;gap:6px;
  padding:16px 18px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);color:var(--text);font-size:14.5px;line-height:1.5;
}
.post-nav-link:hover{border-color:rgba(0,214,143,.4);color:var(--text);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.post-nav-link span{font-size:12px;color:var(--dim);}
.post-nav-link.is-next{text-align:right;}
.back-row{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px;}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 20px 18px;box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:700;margin-bottom:14px;
}
.side-title i{color:var(--brand);font-size:13px;}
.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:7px 10px 7px 12px;border-left:2px solid var(--line);
  font-size:13.5px;color:var(--muted);line-height:1.5;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.03);}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(0,214,143,.08);}
.toc-list li.is-sub a{padding-left:24px;font-size:13px;}
.toc-empty{font-size:13.5px;color:var(--dim);line-height:1.7;}
.mini-list{display:flex;flex-direction:column;gap:14px;}
.mini-item{display:flex;gap:12px;align-items:flex-start;}
.mini-item img{
  width:64px;height:48px;object-fit:cover;border-radius:10px;
  border:1px solid var(--line);flex:0 0 auto;background:rgba(0,214,143,.08);
}
.mini-item .mini-txt{min-width:0;}
.mini-item h4{
  font-size:13.8px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:5px;
}
.mini-item h4 a{color:var(--text);}
.mini-item h4 a:hover{color:var(--brand);}
.mini-item time{font-size:12px;color:var(--dim);font-family:var(--mono);}
.side-cta{
  background:linear-gradient(150deg,rgba(123,92,255,.16),rgba(0,214,143,.10));
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;
}
.side-cta h3{font-size:16px;margin-bottom:8px;}
.side-cta p{font-size:13.5px;color:var(--muted);margin-bottom:16px;line-height:1.7;}
.side-cta .btn-primary{width:100%;padding:12px 18px;font-size:15px;}

/* ---------- 相关推荐 ---------- */
.related-block{padding:0 0 84px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(23px,2.6vw,31px);font-weight:700;line-height:1.3;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:1em;
  background:var(--brand);border-radius:2px;
}
.section-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .more:hover{color:var(--brand-hi);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  height:100%;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(0,214,143,.4);}
.news-card .thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:rgba(0,214,143,.08);}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.news-card:hover .thumb img{transform:scale(1.04);}
.news-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;gap:10px;}
.news-card h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a{color:var(--text);}
.news-card h3 a:hover{color:var(--brand);}
.news-card p{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.news-card .foot time{font-size:12.5px;color:var(--dim);font-family:var(--mono);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background-color:#0C1210;
  background-image:linear-gradient(100deg,rgba(10,15,13,.94) 42%,rgba(10,15,13,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-inner{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:48px;align-items:center;
  padding:76px 0;
}
.cta-copy h2{font-size:clamp(24px,2.9vw,34px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.cta-copy p{color:var(--muted);font-size:15.5px;max-width:480px;margin-bottom:18px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;}
.cta-form{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);
}
.cta-form label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;}
.cta-form .field{
  display:flex;align-items:center;gap:10px;
  background:#0E1512;border:1px solid var(--line);border-radius:var(--r-btn);
  height:48px;padding:0 14px;margin-bottom:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form .field:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,214,143,.12);}
.cta-form .field i{color:var(--dim);font-size:13px;}
.cta-form input{
  flex:1;min-width:0;height:100%;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14.5px;
}
.cta-form input::placeholder{color:var(--dim);}
.cta-form .btn-primary{width:100%;}
.cta-form .privacy{font-size:12px;color:var(--dim);margin-top:12px;line-height:1.65;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#080C0A;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.footer-desc{font-size:13.8px;color:var(--muted);line-height:1.8;margin-top:16px;max-width:400px;}
.footer-col h3{font-size:14.5px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:13.8px;color:var(--muted);}
.footer-col ul a:hover{color:var(--brand);}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:10px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-top:22px;font-size:12.8px;color:var(--dim);
}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,15,13,.96);border-top:1px solid var(--line);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.mobile-bar.is-visible{opacity:1;pointer-events:auto;}
.mobile-bar .btn-primary{flex:1;padding:13px 18px;font-size:15px;}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-search{width:164px;}
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:40px;}
}
@media (max-width:991px){
  .nav-inner{gap:14px;}
  .main-nav{
    position:absolute;top:72px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:12px 24px 20px;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.is-open{display:flex;}
  .main-nav .nav-link{padding:12px 8px;font-size:15px;}
  .main-nav .nav-link::after{left:8px;right:8px;bottom:6px;}
  .nav-search,.tool-link,.btn-ghost-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;order:2;}
  .article-body{padding:40px 0 56px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;padding:60px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .wrap{padding:0 18px;}
  body{padding-bottom:72px;}
  .page-head{padding:24px 0 0;}
  .article-head{padding:18px 0 24px;}
  .article-head h1{font-size:clamp(24px,6.4vw,32px);}
  .entry-content{font-size:15.5px;line-height:1.85;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-link.is-next{text-align:left;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-bar{display:flex;}
  .article-body{padding:32px 0 44px;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .entry-content h2{font-size:20px;}
  .entry-content h3{font-size:17.5px;}
  .entry-content table{font-size:13.5px;}
  .entry-content th,.entry-content td{padding:9px 10px;}
  .btn-primary{padding:12px 20px;font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand:#00D68F;
  --brand-hover:#22E8A4;
  --brand-soft:rgba(0,214,143,.12);
  --purple:#7B5CFF;
  --purple-soft:rgba(123,92,255,.12);
  --accent:#FFD24A;
  --accent-soft:rgba(255,210,74,.12);
  --danger:#FF5A6E;
  --danger-soft:rgba(255,90,110,.12);
  --bg:#0A0F0D;
  --panel:#121A16;
  --panel-2:#18221D;
  --light:#F4F7F5;
  --text:#EAF3EE;
  --text-2:#A8B8B0;
  --text-3:#6F8078;
  --dark-ink:#0A0F0D;
  --dark-ink-2:#43524B;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --line-dark:rgba(10,15,13,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --shadow:0 6px 20px rgba(0,0,0,.38);
  --shadow-hover:0 12px 28px rgba(0,214,143,.16);
  --shadow-light:0 8px 24px rgba(10,15,13,.10);
  --sect:96px;
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-primary:#00D68F;
  --bs-body-bg:#0A0F0D;
  --bs-body-color:#EAF3EE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#00D68F;
  --bs-link-hover-color:#22E8A4;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}

*,*::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:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out;}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0 0 1.05em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:inherit;}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

.wrap{max-width:1280px;margin:0 auto;padding:0 24px;width:100%;}
@media (min-width:1600px){.wrap{max-width:1320px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out;
}
.site-header.is-solid{
  background:rgba(10,15,13,.94);
  border-bottom-color:var(--line);
}
.nav-inner{
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);
  color:#0A0F0D;font-size:17px;
  box-shadow:0 4px 14px rgba(0,214,143,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:24px;margin-left:6px;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--text-2);padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:0 12px;height:40px;width:198px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  flex:1;background:transparent;border:0;color:var(--text);
  font-size:14px;height:100%;min-width:0;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.tool-link{font-size:14px;color:var(--text-2);padding:6px 2px;}
.tool-link:hover{color:var(--brand);}
.btn-ghost-sm{
  display:inline-flex;align-items:center;
  height:40px;padding:0 16px;
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  font-size:14px;color:var(--text);
  transition:all .18s ease-out;
}
.btn-ghost-sm:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.btn-primary-sm{
  display:inline-flex;align-items:center;
  height:40px;padding:0 18px;
  background:var(--brand);color:#0A0F0D;
  border-radius:var(--r-btn);
  font-size:14px;font-weight:700;
  transition:all .18s ease-out;
}
.btn-primary-sm:hover{background:var(--brand-hover);color:#0A0F0D;box-shadow:0 0 0 4px var(--brand-soft);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-2);color:var(--text);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 通用按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;
  background:var(--brand);color:#0A0F0D;
  border:1px solid var(--brand);
  border-radius:var(--r-btn);
  font-size:16px;font-weight:700;
  transition:all .18s ease-out;
}
.btn-main:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#0A0F0D;box-shadow:0 0 0 4px var(--brand-soft);}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;
  background:transparent;color:var(--text);
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;
  transition:all .18s ease-out;
}
.btn-line:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid rgba(0,214,143,.45);
  padding-bottom:2px;
}
.btn-text:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover);}

/* ---------- 徽章 ---------- */
.badge-tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-brand{background:var(--brand-soft);color:var(--brand);}
.tag-purple{background:var(--purple-soft);color:#A995FF;}
.tag-accent{background:var(--accent-soft);color:var(--accent);}
.tag-danger{background:var(--danger-soft);color:var(--danger);}
.tag-plain{background:rgba(255,255,255,.06);color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:140px 0 84px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,13,.72) 0%,rgba(10,15,13,.86) 58%,rgba(10,15,13,.96) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:8px 8px;
  opacity:.5;
  aria-hidden:true;
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:rgba(255,255,255,.2);}
.crumb .now{color:var(--brand);}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;letter-spacing:-.02em;line-height:1.22;
  margin-bottom:20px;
}
.hero h1 .hl{color:var(--brand);}
.hero-sub{
  font-size:17px;color:var(--text-2);max-width:520px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:34px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  padding-top:26px;border-top:1px solid var(--line);
}
.stat-item .num{
  font-family:var(--mono);font-size:30px;font-weight:700;
  color:var(--brand);line-height:1.1;letter-spacing:.01em;
}
.stat-item .unit{font-size:13px;color:var(--text-3);margin-left:4px;}
.stat-item .label{font-size:13px;color:var(--text-2);margin-top:4px;}

.hero-side{position:relative;}
.device-card{
  position:relative;
  border-radius:22px;
  border:1px solid var(--line-2);
  background:var(--panel);
  padding:22px;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.device-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--purple));
}
.device-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.device-top .title{font-size:14px;font-weight:700;color:var(--text);}
.device-top .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.progress-row{margin-bottom:16px;}
.progress-row .meta{display:flex;justify-content:space-between;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.progress-row .meta b{font-family:var(--mono);color:var(--brand);font-weight:700;}
.bar{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:var(--brand);}
.bar i.purple{background:var(--purple);}
.device-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);}
.hero-sep{
  height:1px;margin-top:64px;
  background:linear-gradient(90deg,transparent,rgba(0,214,143,.45),transparent);
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sect) 0;}
.sect-head{max-width:760px;margin-bottom:40px;}
.sect-head h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;line-height:1.3;
  padding-left:16px;border-left:3px solid var(--brand);
  margin-bottom:14px;
}
.sect-head p{color:var(--text-2);font-size:16px;}

/* ---------- 筛选 chips ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:0 0 30px;
}
.chip{
  display:inline-flex;align-items:center;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-2);
  background:transparent;color:var(--text-2);
  font-size:14px;
  transition:all .18s ease-out;
}
.chip:hover{border-color:var(--brand);color:var(--brand);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#0A0F0D;font-weight:700;}

/* ---------- 两列大卡 ---------- */
.card-big{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  height:100%;
}
.card-big:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(0,214,143,.4);}
.card-big .media{position:relative;min-height:240px;background:#0E1512;}
.card-big .media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.card-big .media .badge-tag{position:absolute;left:14px;top:14px;}
.card-big .body{padding:26px 26px 24px;display:flex;flex-direction:column;}
.card-big h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.4;}
.card-big p{font-size:14px;color:var(--text-2);margin-bottom:18px;}
.card-big .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.card-big .meta .date{font-family:var(--mono);}
.card-big .meta .go{color:var(--brand);font-weight:600;}

/* ---------- 浅色区块：版本通道对比 ---------- */
.band-light{
  background:var(--light);
  color:var(--dark-ink);
  padding:var(--sect) 0;
}
.band-light .sect-head h2{color:var(--dark-ink);}
.band-light .sect-head p{color:var(--dark-ink-2);}
.compare-scroll{overflow-x:auto;padding-bottom:6px;}
.compare{
  min-width:760px;
  border:1px solid var(--line-dark);
  border-radius:var(--r-card);
  background:#fff;
  box-shadow:var(--shadow-light);
  overflow:hidden;
}
.compare-row{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr 1fr;
  border-bottom:1px solid var(--line-dark);
}
.compare-row:last-child{border-bottom:0;}
.compare-row.head{
  background:#E9EFEB;
  font-weight:700;
}
.compare-cell{
  padding:18px 20px;
  font-size:14px;color:var(--dark-ink-2);
  border-right:1px solid var(--line-dark);
}
.compare-cell:last-child{border-right:0;}
.compare-row.head .compare-cell{color:var(--dark-ink);font-size:15px;}
.compare-cell.label{color:var(--dark-ink);font-weight:600;background:rgba(10,15,13,.02);}
.compare-cell.is-rec{
  position:relative;
  background:rgba(0,214,143,.08);
  border:1px solid rgba(0,214,143,.55);
  border-top:0;border-bottom:0;
  color:var(--dark-ink);font-weight:700;
}
.compare-cell .mark{font-family:var(--mono);color:#0F7A55;font-weight:700;}
.compare-cell .off{color:#98A69F;}
.rec-flag{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#3A2C00;
  font-size:11px;font-weight:700;
  padding:2px 10px;border-radius:0 0 8px 8px;
}
.compare-note{font-size:12px;color:var(--dark-ink-2);margin-top:16px;}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.step:hover{transform:translateY(-3px);border-color:rgba(0,214,143,.4);box-shadow:var(--shadow-hover);}
.step .no{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand);
  border:1px solid rgba(0,214,143,.4);border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:28px;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14px;color:var(--text-2);}

/* ---------- 7/5 不对称保障区 ---------- */
.split{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start;}
.split h2{
  font-size:clamp(24px,2.8vw,34px);
  padding-left:16px;border-left:3px solid var(--brand);
  margin-bottom:24px;
}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:14px;
  font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:10px;height:10px;border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 0 4px var(--brand-soft);
}
.check-list li b{color:var(--text);font-weight:600;}
.side-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow);
}
.side-panel h3{font-size:17px;margin-bottom:18px;}
.side-panel .row-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--text-2);
}
.side-panel .row-item:last-of-type{border-bottom:0;}
.side-panel .row-item span{font-family:var(--mono);color:var(--brand);font-weight:700;}
.side-panel .note{font-size:12px;color:var(--text-3);margin-top:16px;}

/* ---------- FAQ ---------- */
.acc{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-head{
  width:100%;background:transparent;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;
  color:var(--text);font-size:15px;font-weight:600;
  transition:color .18s ease-out;
}
.acc-head:hover{color:var(--brand);}
.acc-icon{
  position:relative;flex:0 0 26px;width:26px;height:26px;
  border:1px solid var(--line-2);border-radius:50%;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;background:var(--text-2);
  transition:transform .22s ease-out,background .18s ease-out;
}
.acc-icon::before{left:7px;right:7px;top:12px;height:1.5px;}
.acc-icon::after{top:7px;bottom:7px;left:12px;width:1.5px;}
.acc-item.is-open .acc-icon{border-color:var(--brand);background:var(--brand-soft);}
.acc-item.is-open .acc-icon::before{background:var(--brand);}
.acc-item.is-open .acc-icon::after{transform:scaleY(0);background:var(--brand);}
.acc-body{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
  background:var(--panel);
  border-radius:0 0 var(--r-card) var(--r-card);
}
.acc-body p{
  padding:18px 22px;font-size:14px;color:var(--text-2);margin:0;
}

/* ---------- 底部 CTA ---------- */
.cta{
  position:relative;
  padding:82px 0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,15,13,.94) 0%,rgba(10,15,13,.78) 60%,rgba(10,15,13,.9) 100%);
}
.cta .wrap{position:relative;z-index:2;}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.cta h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px;}
.cta p{color:var(--text-2);font-size:15px;max-width:460px;}
.cta-form{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow);
}
.cta-form label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field{
  display:flex;gap:12px;flex-wrap:wrap;
}
.field input{
  flex:1 1 200px;min-width:0;
  height:50px;padding:0 16px;
  background:#0E1512;color:var(--text);
  border:1px solid var(--line-2);border-radius:var(--r-input);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.privacy{font-size:12px;color:var(--text-3);margin-top:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#080C0A;
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-desc{font-size:14px;color:var(--text-3);margin-top:18px;max-width:330px;}
.footer-col h3{
  font-size:15px;color:var(--text);margin-bottom:18px;font-weight:700;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-col p{font-size:13px;color:var(--text-3);margin-bottom:12px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:22px 0;font-size:13px;color:var(--text-3);
}

/* ---------- 移动端底栏 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1100;
  display:none;align-items:center;gap:12px;
  padding:10px 16px 14px;
  background:rgba(10,15,13,.96);
  border-top:1px solid var(--line);
  transform:translateY(100%);opacity:0;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.mobile-bar.is-show{transform:none;opacity:1;}
.mobile-bar .btn-main{flex:1;height:46px;font-size:15px;}
.mobile-bar .icon-btn{
  width:46px;height:46px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);color:var(--text);background:transparent;
}
.mobile-bar .icon-btn:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-search{width:160px;}
  .main-nav{gap:16px;}
  .nav-link{font-size:14px;}
  .hero-grid{gap:40px;}
  .split{gap:40px;}
}
@media (max-width:991px){
  :root{--sect:72px;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#0A0F0D;
    border-bottom:1px solid var(--line);
    padding:6px 24px 20px;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .22s ease-out,opacity .22s ease-out;
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.is-open{transform:none;opacity:1;pointer-events:auto;}
  .nav-link{padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;}
  .nav-link::after{display:none;}
  .nav-search{display:none;}
  .tool-link,.btn-ghost-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:118px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .split{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .card-big{grid-template-columns:1fr;}
  .card-big .media{min-height:200px;position:relative;}
  .card-big .media img{position:relative;height:210px;}
}
@media (max-width:767px){
  :root{--sect:56px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:16px;}
  .hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:12px;}
  .btn-main,.btn-line{height:46px;padding:0 20px;font-size:15px;}
  .hero-stats{gap:24px;}
  .stat-item .num{font-size:24px;}
  .sect-head{margin-bottom:28px;}
  .steps{grid-template-columns:1fr;}
  .mobile-bar{display:flex;}
  .site-footer{padding-bottom:76px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-form{padding:20px;}
  .acc-head{font-size:14px;padding:18px 0;}
}
@media (max-width:520px){
  .wrap{padding:0 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-stats{gap:18px 22px;}
  .compare-cell{padding:14px 14px;font-size:13px;}
}

/* roulang page: category2 */
:root{
  --ink:#0A0F0D;
  --panel:#121A16;
  --panel-soft:#16211C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF3EE;
  --muted:#A8B8B0;
  --dim:#6F8078;
  --main:#00D68F;
  --main-light:#22E8A4;
  --purple:#7B5CFF;
  --yellow:#FFD24A;
  --coral:#FF5A6E;
  --light:#F4F7F5;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 6px 20px rgba(0,0,0,.38);
  --sh-hover:0 12px 28px rgba(0,214,143,.16);
  --sh-light:0 8px 24px rgba(10,15,13,.10);
  --sec:96px;
  --bs-body-bg:var(--ink);
  --bs-body-color:var(--text);
  --bs-primary:#00D68F;
  --bs-primary-rgb:0,214,143;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#00D68F;
  --bs-link-hover-color:#22E8A4;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--main);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--main-light)}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--main);outline-offset:3px}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1600px){.wrap{max-width:1320px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  height:72px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out;
}
.site-header.is-stuck{
  background:rgba(10,15,13,.94);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(0,214,143,.22),rgba(123,92,255,.22));
  border:1px solid rgba(0,214,143,.4);
  color:var(--main);font-size:16px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--main);transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--main);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  position:relative;display:flex;align-items:center;
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:0 12px;height:38px;width:212px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search i{color:var(--dim);font-size:13px;margin-right:8px}
.nav-search input{
  background:transparent;border:0;outline:none;color:var(--text);
  font-size:13.5px;width:100%;height:100%;
}
.nav-search input::placeholder{color:var(--dim)}
.nav-search:focus-within{border-color:var(--main);box-shadow:0 0 0 4px rgba(0,214,143,.16)}
.tool-link{font-size:14px;color:var(--muted);padding:6px 4px}
.tool-link:hover{color:var(--text)}
.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;font-size:13.5px;font-weight:600;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);
  color:var(--text);background:transparent;
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-ghost-sm:hover{background:rgba(0,214,143,.12);border-color:rgba(0,214,143,.5);color:var(--main-light)}
.btn-primary-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;font-size:13.5px;font-weight:700;
  border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--main);color:#04231A;
  transition:background .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn-primary-sm:hover{background:var(--main-light);color:#04231A;box-shadow:0 0 0 4px rgba(0,214,143,.16)}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:var(--r-btn);
  background:var(--panel);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(0,214,143,.5);color:var(--main)}

/* ---------- Buttons ---------- */
.btn-main,.btn-line,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;font-size:15px;font-weight:700;
  border-radius:var(--r-btn);cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.btn-main{background:var(--main);color:#04231A;border:1px solid transparent}
.btn-main:hover{background:var(--main-light);color:#04231A;box-shadow:0 0 0 4px rgba(0,214,143,.16);transform:translateY(-2px)}
.btn-line{background:transparent;color:var(--text);border:1px solid var(--line-strong)}
.btn-line:hover{background:rgba(0,214,143,.12);border-color:rgba(0,214,143,.55);color:var(--main-light)}
.btn-text{
  height:48px;padding:0 4px;background:none;border:0;color:var(--main);
  border-bottom:1px solid rgba(0,214,143,.5);border-radius:0;
}
.btn-text:hover{color:var(--main-light);border-bottom-color:var(--main-light)}

/* ---------- Badges / chips ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.5;
  background:rgba(0,214,143,.12);color:var(--main);
}
.badge-soft.purple{background:rgba(123,92,255,.14);color:#B9A8FF}
.badge-soft.yellow{background:rgba(255,210,74,.14);color:var(--yellow)}
.badge-soft.coral{background:rgba(255,90,110,.14);color:#FF8E9B}

/* ---------- Hero ---------- */
.hero-cat{position:relative;overflow:hidden;padding:104px 0 88px}
.hero-cat .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.52}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,15,13,.95) 0%,rgba(10,15,13,.82) 52%,rgba(10,15,13,.6) 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.breadcrumb-bar{font-size:13px;color:var(--dim);margin-bottom:20px;display:flex;gap:8px;align-items:center}
.breadcrumb-bar a{color:var(--dim)}
.breadcrumb-bar a:hover{color:var(--main)}
.breadcrumb-bar span.sep{color:rgba(255,255,255,.24)}
.breadcrumb-bar .cur{color:var(--main)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);letter-spacing:.06em;
  border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.eyebrow i{color:var(--main);font-size:11px}
.hero-cat h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;margin-bottom:18px;
}
.hero-cat h1 em{font-style:normal;color:var(--main)}
.lead{font-size:16.5px;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;border-top:1px solid var(--line);padding-top:24px}
.hero-stats div{min-width:96px}
.hero-stats b{
  display:block;font-family:"DIN Alternate",ui-monospace,SFMono-Regular,monospace;
  font-size:28px;font-weight:700;color:var(--main);line-height:1.2;
}
.hero-stats b.yellow{color:var(--yellow)}
.hero-stats b.purple{color:#B9A8FF}
.hero-stats span{font-size:13px;color:var(--dim)}

/* device panel */
.device{
  background:linear-gradient(180deg,rgba(18,26,22,.96),rgba(10,15,13,.96));
  border:1px solid var(--line);border-radius:20px;
  padding:22px;box-shadow:var(--sh-card);position:relative;
  max-width:380px;margin-left:auto;
}
.device::before{
  content:"";position:absolute;inset:5px;border-radius:16px;
  border:1px solid rgba(255,255,255,.05);pointer-events:none;
}
.device-top{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:18px}
.device-top .dot{width:8px;height:8px;border-radius:50%;background:var(--main);box-shadow:0 0 0 4px rgba(0,214,143,.16)}
.device-row{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px}
.device-row span{font-size:13.5px;color:var(--muted)}
.device-row b{font-family:"DIN Alternate",ui-monospace,SFMono-Regular,monospace;font-size:18px;color:var(--text)}
.bar{height:6px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden;margin-bottom:20px}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--main),var(--main-light))}
.bar i.purple{background:linear-gradient(90deg,var(--purple),#A18CFF)}
.w92{width:92%}.w78{width:78%}.w62{width:62%}.w45{width:45%}
.device-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}

/* ---------- Section base ---------- */
.section{padding:var(--sec) 0}
.section-head{margin-bottom:38px}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3;
  padding-left:16px;position:relative;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:2px;background:var(--main);
}
.section-head p{color:var(--muted);max-width:720px;font-size:15.5px}
.section-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(0,214,143,.5),transparent);border:0;margin:0}

/* ---------- Adapt board (chips + 3 col cards) ---------- */
.board{display:grid;grid-template-columns:250px 1fr;gap:34px;align-items:start}
.filter-col{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:20px;position:sticky;top:92px}
.filter-col h3{font-size:15px;font-weight:600;color:var(--muted);margin-bottom:14px;letter-spacing:.04em}
.chip-list{display:flex;flex-direction:column;gap:8px;margin-bottom:22px}
.chip{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;font-size:14px;color:var(--muted);
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  cursor:pointer;text-align:left;width:100%;
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.chip:hover{background:rgba(255,255,255,.04);color:var(--text)}
.chip.is-on{background:rgba(0,214,143,.12);border-color:rgba(0,214,143,.5);color:var(--main);font-weight:600}
.chip b{font-family:"DIN Alternate",ui-monospace,monospace;font-size:12.5px;color:var(--dim)}
.chip.is-on b{color:var(--main)}
.filter-note{font-size:12.5px;color:var(--dim);line-height:1.7;border-top:1px solid var(--line);padding-top:14px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mini-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:rgba(0,214,143,.4)}
.mini-cover{aspect-ratio:16/9;overflow:hidden;background:rgba(0,214,143,.08)}
.mini-cover img{width:100%;height:100%;object-fit:cover}
.mini-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-body h3{font-size:17px;font-weight:600;line-height:1.45}
.mini-body p{font-size:13.8px;color:var(--muted);line-height:1.7}
.mini-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:12px;border-top:1px solid var(--line);
}
.mini-foot time{font-family:"DIN Alternate",ui-monospace,monospace;font-size:12.5px;color:var(--dim)}
.mini-foot a{font-size:13.5px;font-weight:600}
.pager{display:flex;gap:8px;justify-content:center;margin-top:36px}
.pager a,.pager span.pg{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  font-size:13.5px;font-family:"DIN Alternate",ui-monospace,monospace;
  border:1px solid var(--line);border-radius:8px;color:var(--muted);
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.pager a:hover{border-color:rgba(0,214,143,.5);color:var(--main)}
.pager .is-cur{background:var(--main);border-color:var(--main);color:#04231A;font-weight:700}
.pager .is-off{opacity:.35;pointer-events:none}

/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  padding:26px 22px;position:relative;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.step:hover{transform:translateY(-3px);border-color:rgba(123,92,255,.45);box-shadow:0 12px 28px rgba(123,92,255,.14)}
.step b{
  display:block;font-family:"DIN Alternate",ui-monospace,monospace;
  font-size:26px;font-weight:700;color:rgba(0,214,143,.65);margin-bottom:14px;letter-spacing:.04em;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted);line-height:1.72}

/* ---------- Tier table ---------- */
.tier-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);overflow:hidden}
.tier-row{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;align-items:center;border-top:1px solid var(--line)}
.tier-row:first-child{border-top:0}
.tier-row.head{background:rgba(255,255,255,.03)}
.tier-row.head div{font-size:14px;font-weight:700;color:var(--text);padding:18px 20px}
.tier-row.head div:not(:first-child){text-align:center}
.tier-cell{padding:16px 20px;font-size:14px;color:var(--muted)}
.tier-cell.name{color:var(--text);font-weight:600}
.tier-cell.val{
  text-align:center;font-family:"DIN Alternate",ui-monospace,monospace;
  font-size:15px;color:var(--text);
}
.tier-col-rec{position:relative}
.tier-row.head .tier-col-rec{color:var(--main)}
.tier-row.head .tier-col-rec::before{
  content:"推荐";
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--yellow);color:#2A1E00;font-size:11px;font-weight:800;
  padding:2px 10px;border-radius:999px;font-family:"PingFang SC","Microsoft YaHei",sans-serif;
  letter-spacing:.04em;white-space:nowrap;
}
.tier-row.body-row .tier-col-rec{background:rgba(0,214,143,.06);box-shadow:inset 1px 0 0 rgba(0,214,143,.35),inset -1px 0 0 rgba(0,214,143,.35)}
.tier-note{font-size:12.5px;color:var(--dim);padding:16px 20px 20px;border-top:1px solid var(--line)}

/* ---------- Proof (light) ---------- */
.proof{background:var(--light);color:#0A0F0D;padding:var(--sec) 0}
.proof .section-head h2{color:#0A0F0D}
.proof .section-head h2::before{background:#00A86F}
.proof .section-head p{color:#4A5A52}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.proof-item{
  background:#FFFFFF;border-radius:var(--r-card);padding:30px 26px;
  box-shadow:var(--sh-light);border:1px solid rgba(10,15,13,.06);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.proof-item:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(10,15,13,.14)}
.proof-item b{
  display:block;font-family:"DIN Alternate",ui-monospace,SFMono-Regular,monospace;
  font-size:40px;font-weight:700;color:#00A86F;line-height:1.15;margin-bottom:10px;
}
.proof-item blockquote{margin:0 0 16px;font-size:15.5px;line-height:1.78;color:#22302A}
.proof-item .src{font-size:12.5px;color:#6C7C74;display:flex;align-items:center;gap:8px}
.proof-item .src i{color:#00A86F}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-border-width:0;
  --bs-accordion-btn-color:var(--text);--bs-accordion-btn-bg:transparent;
  --bs-accordion-active-color:var(--main);--bs-accordion-active-bg:transparent;
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-body-padding-y:0;--bs-accordion-body-padding-x:0;
  --bs-accordion-btn-padding-y:18px;--bs-accordion-btn-padding-x:20px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease-out;
}
.faq-item:hover{border-color:rgba(0,214,143,.32)}
.accordion-button{
  font-size:15.5px;font-weight:600;line-height:1.6;
  color:var(--text);background:transparent;box-shadow:none;
  padding-right:64px;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border:1px solid var(--line-strong);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:400;color:var(--muted);line-height:1;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.accordion-button:not(.collapsed){color:var(--main)}
.accordion-button:not(.collapsed)::before{content:"−";color:var(--main);border-color:rgba(0,214,143,.5)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-body{padding:0 20px 20px;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:76px 0;background:var(--panel-soft);
}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,15,13,.94),rgba(10,15,13,.72))}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.cta-grid h2{font-size:clamp(23px,2.6vw,32px);font-weight:700;line-height:1.32;margin-bottom:14px}
.cta-grid p{color:var(--muted);font-size:15px;max-width:520px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 200px;height:48px;padding:0 16px;font-size:14.5px;
  background:rgba(10,15,13,.72);border:1px solid var(--line-strong);
  border-radius:var(--r-btn);color:var(--text);outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.cta-form input::placeholder{color:var(--dim)}
.cta-form input:focus{border-color:var(--main);box-shadow:0 0 0 4px rgba(0,214,143,.16)}
.cta-privacy{font-size:12px;color:var(--dim);margin-top:12px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);border-top:1px solid var(--line);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:38px}
.footer-desc{font-size:13.8px;color:var(--muted);line-height:1.8;margin-top:16px;max-width:330px}
.footer-col h3{font-size:14.5px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:13.8px;color:var(--muted)}
.footer-col ul a:hover{color:var(--main)}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:var(--dim);
}

/* ---------- Mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  display:none;align-items:center;gap:12px;
  padding:10px 16px 14px;
  background:rgba(10,15,13,.96);border-top:1px solid var(--line);
  transform:translateY(110%);opacity:0;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.mobile-bar.is-show{transform:translateY(0);opacity:1}
.mobile-bar .btn-primary-sm{flex:1;height:44px;font-size:15px}
.bar-icon{
  width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--panel);border:1px solid var(--line-strong);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.bar-icon:hover{border-color:rgba(0,214,143,.5);color:var(--main)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .nav-search{width:170px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  :root{--sec:72px}
  .site-header.is-stuck{background:rgba(10,15,13,.97)}
  .nav-search{display:none}
  .tool-link{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;top:72px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
    padding:12px;display:none;box-shadow:var(--sh-card);margin-left:0;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;font-size:15px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:rgba(0,214,143,.1)}
  .hero-cat{padding:72px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .device{margin-left:0;max-width:100%}
  .board{grid-template-columns:1fr;gap:26px}
  .filter-col{position:static}
  .chip-list{flex-direction:row;flex-wrap:wrap}
  .chip{width:auto;padding:8px 14px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .proof-grid{grid-template-columns:1fr;gap:20px}
  .tier-row{grid-template-columns:1.2fr 1fr 1fr 1fr}
  .tier-cell,.tier-row.head div{padding:14px 12px;font-size:13.5px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .wrap{padding:0 18px}
  .brand-text em{display:none}
  .btn-ghost-sm{display:none}
  .mobile-bar{display:flex}
  body{padding-bottom:74px}
  .card-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .hero-stats{gap:22px}
  .hero-stats b{font-size:23px}
  .hero-actions .btn-main,.hero-actions .btn-line{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .tier-row{grid-template-columns:1fr 1fr}
  .tier-cell.name{grid-column:1 / -1;background:rgba(255,255,255,.03)}
  .tier-row.head .tier-cell.name{background:transparent}
  .tier-row.head div:first-child{grid-column:1 / -1}
  .tier-row.head div:not(:first-child){text-align:left}
  .tier-row.head .tier-col-rec::before{top:-10px;left:auto;right:10px;transform:none}
  .tier-cell.val{text-align:left}
}
@media (max-width:520px){
  .hero-cat h1{font-size:27px}
  .section-head h2{font-size:22px;padding-left:12px}
  .device{padding:16px}
  .btn-main,.btn-line{height:46px;padding:0 18px;font-size:14.5px}
  .pager a,.pager span.pg{width:32px;height:32px;font-size:12.5px}
  .proof-item b{font-size:32px}
  .cta-form input{flex:1 1 100%}
  .cta-form .btn-main{width:100%}
}

/* roulang page: category3 */
:root{
  --c-bg:#0A0F0D;
  --c-panel:#121A16;
  --c-panel-2:#18221D;
  --c-light:#F4F7F5;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#00D68F;
  --c-primary-soft:rgba(0,214,143,.12);
  --c-primary-hi:#22E8A4;
  --c-violet:#7B5CFF;
  --c-violet-soft:rgba(123,92,255,.14);
  --c-yellow:#FFD24A;
  --c-yellow-soft:rgba(255,210,74,.14);
  --c-coral:#FF5A6E;
  --c-text:#EAF3EE;
  --c-text-2:#A8B8B0;
  --c-text-3:#6F8078;
  --c-ink:#0A0F0D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 6px 20px rgba(0,0,0,.38);
  --sh-card-hover:0 12px 28px rgba(0,214,143,.16);
  --sh-light:0 8px 24px rgba(10,15,13,.10);
  --sp-section:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-primary:#00D68F;
  --bs-body-bg:#0A0F0D;
  --bs-body-color:#EAF3EE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:10px;
  --bs-link-color:#00D68F;
  --bs-link-hover-color:#22E8A4;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
a:hover{color:var(--c-primary-hi);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 1.05em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
@media (min-width:1600px){.wrap{max-width:1320px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .22s ease-out,border-color .22s ease-out;
}
.site-header.is-scrolled{
  background:rgba(10,15,13,.92);
  border-bottom-color:var(--c-line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#00A86F);
  color:#05170F;font-size:16px;
  box-shadow:0 4px 14px rgba(0,214,143,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  padding:8px 12px;font-size:14.5px;color:var(--c-text-2);
  border-radius:8px;
}
.nav-link:hover{color:var(--c-text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-btn);padding:0 12px;height:38px;width:216px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search i{color:var(--c-text-3);font-size:13px;}
.nav-search input{
  background:transparent;border:0;color:var(--c-text);width:100%;height:100%;
  font-size:13.5px;outline:none;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft);}
.tool-link{font-size:14px;color:var(--c-text-2);}
.tool-link:hover{color:var(--c-primary);}
.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--c-line-strong);color:var(--c-text);
  font-size:14px;background:transparent;
}
.btn-ghost-sm:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.btn-primary-sm{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#05170F;font-weight:700;font-size:14px;
  border:1px solid transparent;
}
.btn-primary-sm:hover{
  background:var(--c-primary-hi);color:#05170F;
  box-shadow:0 0 0 4px var(--c-primary-soft);
}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:var(--r-btn);
  background:var(--c-panel);border:1px solid var(--c-line);color:var(--c-text);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--c-line);background:rgba(18,26,22,.42);}
.crumbs{display:flex;align-items:center;gap:8px;padding:12px 0;font-size:13px;color:var(--c-text-3);}
.crumbs a{color:var(--c-text-3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span.sep{color:var(--c-text-3);opacity:.6;}
.crumbs .current{color:var(--c-primary);}

/* ---------- hero banner (通栏分类说明) ---------- */
.hero-banner{
  position:relative;
  padding:76px 0 68px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.hero-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,15,13,.94) 0%,rgba(10,15,13,.80) 48%,rgba(10,15,13,.62) 100%);
}
.hero-banner::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:14px 14px;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(0,214,143,.24);
}
.hero-banner h1{
  margin:22px 0 16px;
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;letter-spacing:-.02em;line-height:1.22;
}
.hero-banner h1 .hl{color:var(--c-primary);}
.hero-lead{
  font-size:17px;color:var(--c-text-2);max-width:720px;margin-bottom:14px;
}
.hero-note{
  font-size:14px;color:var(--c-text-3);max-width:760px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#05170F;font-weight:700;font-size:15.5px;
  border:1px solid transparent;transition:all .18s ease-out;
}
.btn-solid:hover{background:var(--c-primary-hi);color:#05170F;box-shadow:0 0 0 4px var(--c-primary-soft);transform:translateY(-2px);}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid var(--c-line-strong);color:var(--c-text);font-size:15px;font-weight:600;
  background:transparent;transition:all .18s ease-out;
}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-text);font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(234,243,238,.35);padding-bottom:2px;
}
.link-underline:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(18,26,22,.6);
}
.chip.is-on{border-color:rgba(0,214,143,.42);color:var(--c-primary);background:var(--c-primary-soft);}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:36px;}
.sec-title{
  position:relative;font-size:clamp(24px,2.8vw,34px);font-weight:700;
  padding-left:16px;line-height:1.3;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:var(--c-primary);
}
.sec-sub{margin-top:14px;color:var(--c-text-2);font-size:15.5px;}

/* ---------- 指标条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
}
.stat-item{background:var(--c-panel);padding:26px 22px;}
.stat-num{font-family:var(--font-num);font-size:clamp(24px,2.6vw,34px);font-weight:700;color:var(--c-primary);line-height:1.1;}
.stat-num small{font-size:13px;color:var(--c-text-2);font-family:var(--font-cn);margin-left:4px;font-weight:500;}
.stat-label{margin-top:8px;font-size:14px;color:var(--c-text);font-weight:600;}
.stat-desc{margin-top:6px;font-size:13px;color:var(--c-text-3);line-height:1.6;}

/* ---------- 宽卡列表 ---------- */
.guide-list{display:flex;flex-direction:column;gap:22px;}
.guide-card{
  display:grid;grid-template-columns:320px 1fr;gap:0;
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.guide-card:hover{transform:translateY(-3px);box-shadow:var(--sh-card-hover);border-color:rgba(0,214,143,.4);}
.guide-media{position:relative;background:rgba(0,214,143,.08);overflow:hidden;}
.guide-media img{width:100%;height:100%;object-fit:cover;min-height:210px;border-radius:0;}
.guide-media .tag-float{
  position:absolute;left:14px;top:14px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(10,15,13,.78);color:var(--c-primary);
  border:1px solid rgba(0,214,143,.4);letter-spacing:.02em;
}
.guide-body{padding:26px 28px;display:flex;flex-direction:column;}
.guide-title{font-size:21px;font-weight:700;line-height:1.4;}
.guide-title a{color:var(--c-text);}
.guide-title a:hover{color:var(--c-primary);}
.guide-desc{margin-top:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.75;}
.guide-points{margin-top:14px;display:flex;flex-direction:column;gap:7px;}
.guide-points li{position:relative;padding-left:18px;font-size:13.5px;color:var(--c-text-3);}
.guide-points li::before{
  content:"";position:absolute;left:2px;top:.66em;width:6px;height:6px;border-radius:2px;
  background:var(--c-primary);transform:rotate(45deg);
}
.guide-foot{
  margin-top:auto;padding-top:18px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--c-line);
}
.guide-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-green{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-violet{background:var(--c-violet-soft);color:#B7A4FF;}
.badge-yellow{background:var(--c-yellow-soft);color:var(--c-yellow);}
.badge-coral{background:rgba(255,90,110,.14);color:#FF8B99;}
.meta-date{font-family:var(--font-num);font-size:13px;color:var(--c-text-3);}
.guide-go{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-primary);
}
.guide-go i{font-size:12px;transition:transform .18s ease-out;}
.guide-go:hover i{transform:translateX(3px);}

/* ---------- 步骤流程 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step-card{
  position:relative;background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 22px 24px;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(0,214,143,.4);box-shadow:var(--sh-card-hover);}
.step-index{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--c-primary);
}
.step-card h3{margin-top:12px;font-size:18px;font-weight:600;}
.step-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;margin-bottom:0;}

/* ---------- 浅色提示块 ---------- */
.light-band{background:var(--c-light);color:var(--c-ink);border-radius:var(--r-card);padding:48px 44px;box-shadow:var(--sh-light);}
.light-band h2{font-size:clamp(22px,2.4vw,30px);color:var(--c-ink);}
.light-band .light-sub{color:#4A5A52;margin-top:14px;font-size:15.5px;}
.light-points{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:30px;}
.light-points h3{font-size:17px;color:var(--c-ink);margin-bottom:8px;}
.light-points p{font-size:14px;color:#4A5A52;line-height:1.72;margin:0;}
.light-points .pt-num{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:#00A86F;letter-spacing:.1em;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.accordion-item{
  background:var(--c-panel);border:1px solid var(--c-line) !important;
  border-radius:var(--r-card) !important;margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:var(--c-panel);color:var(--c-text);font-size:15.5px;font-weight:600;
  padding:20px 24px;box-shadow:none !important;
}
.accordion-button:not(.collapsed){background:rgba(0,214,143,.06);color:var(--c-primary);}
.accordion-button::after{
  background-image:none;content:"+";
  font-family:var(--font-num);font-size:19px;font-weight:500;color:var(--c-text-2);
  width:26px;height:26px;border:1px solid var(--c-line-strong);border-radius:50%;
  display:grid;place-items:center;line-height:1;margin-left:auto;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.accordion-button:not(.collapsed)::after{content:"–";color:var(--c-primary);border-color:rgba(0,214,143,.5);}
.accordion-button:focus{outline:2px solid var(--c-primary);outline-offset:-2px;}
.accordion-body{padding:4px 24px 22px;color:var(--c-text-2);font-size:14.5px;line-height:1.82;background:var(--c-panel);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:76px 0;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(10,15,13,.88);}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-inner h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;}
.cta-inner .cta-p{margin-top:14px;color:var(--c-text-2);font-size:15.5px;max-width:480px;}
.cta-form{
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);
}
.cta-form label{display:block;font-size:13.5px;color:var(--c-text-2);margin-bottom:8px;}
.field-row{display:flex;gap:12px;}
.form-control{
  flex:1;height:48px;background:#0E1512;border:1px solid var(--c-line);
  border-radius:var(--r-btn);color:var(--c-text);font-size:14.5px;padding:0 16px;
}
.form-control::placeholder{color:var(--c-text-3);}
.form-control:focus{
  background:#0E1512;border-color:var(--c-primary);color:var(--c-text);
  box-shadow:0 0 0 4px var(--c-primary-soft);outline:none;
}
.form-hint{margin-top:14px;font-size:12px;color:var(--c-text-3);line-height:1.6;}
.form-err{margin-top:10px;font-size:13px;color:var(--c-coral);display:none;}
.form-err.is-show{display:block;}

/* ---------- footer ---------- */
.site-footer{background:#070B09;border-top:1px solid var(--c-line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-desc{margin-top:16px;font-size:13.5px;color:var(--c-text-3);line-height:1.78;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;letter-spacing:.03em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--c-text-3);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:13px;color:var(--c-text-3);line-height:1.78;margin-bottom:10px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-text-3);
}

/* ---------- mobile action bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,15,13,.96);border-top:1px solid var(--c-line);
  transform:translateY(100%);opacity:0;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.mobile-bar.is-show{transform:translateY(0);opacity:1;}
.mobile-bar .btn-solid{flex:1;height:44px;justify-content:center;font-size:15px;}
.mobile-bar .bar-search{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line-strong);
  background:var(--c-panel);color:var(--c-text);display:grid;place-items:center;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-search{width:170px;}
  .main-nav{gap:2px;}
  .nav-link{padding:8px 9px;font-size:14px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  :root{--sp-section:72px;}
  .nav-search{display:none;}
  .tool-link{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .main-nav{
    position:absolute;left:16px;right:16px;top:72px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--c-panel);border:1px solid var(--c-line);
    border-radius:var(--r-card);padding:12px;
    box-shadow:0 18px 40px rgba(0,0,0,.5);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--c-primary-soft);}
  .guide-card{grid-template-columns:260px 1fr;}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .light-points{grid-template-columns:1fr;gap:22px;}
  .cta-inner{grid-template-columns:1fr;gap:30px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767.98px){
  :root{--sp-section:56px;}
  .brand-text em{display:none;}
  .nav-inner{height:64px;gap:12px;}
  .main-nav{top:64px;}
  .mobile-bar{display:flex;}
  .hero-banner{padding:52px 0 48px;}
  .hero-lead{font-size:15.5px;}
  .guide-card{grid-template-columns:1fr;}
  .guide-media img{min-height:180px;max-height:210px;}
  .guide-body{padding:22px 20px;}
  .guide-foot{flex-direction:column;align-items:flex-start;gap:12px;}
  .steps-grid{grid-template-columns:1fr;}
  .light-band{padding:34px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{padding-bottom:88px;}
  .cta-band{padding:56px 0;}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px;}
  .stat-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions{gap:10px;}
  .btn-solid,.btn-outline{width:100%;justify-content:center;}
  .field-row{flex-direction:column;}
  .accordion-button{font-size:14.5px;padding:16px 18px;}
  .accordion-body{padding:2px 18px 18px;}
}