/* roulang page: index */
:root{
  --ink:#101216;
  --ink-2:#2A2E36;
  --signal:#FF5A24;
  --signal-dark:#C93B0E;
  --signal-soft:rgba(255,90,36,.10);
  --pine:#1F5E52;
  --paper:#F7F6F1;
  --paper-2:#FAF9F5;
  --card:#FFFFFF;
  --line:#E5E2D9;
  --divider:#EFEDE7;
  --text:#171A1F;
  --text-2:#5B6068;
  --text-3:#8A9099;
  --light-text:#F4F3EF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(16,18,22,.05), 0 8px 24px -12px rgba(16,18,22,.10);
  --sh-hover:0 16px 40px -16px rgba(16,18,22,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --t:300ms;
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--signal)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.1em;padding-left:1.25em}
li{margin-bottom:.4em}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:4px}
::selection{background:var(--signal);color:#fff}

.num,.cd-num,.stat-num,time,.meta-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{max-width:1200px;padding-left:24px;padding-right:24px}
@media (max-width:767.98px){.container{padding-left:20px;padding-right:20px}}

/* ---------- 通用排版块 ---------- */
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--paper{background:var(--paper-2)}
.section--dark{background:var(--ink);color:var(--light-text)}
.section--dark h2,.section--dark h3{color:var(--light-text)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head .eyebrow{margin-bottom:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--signal);
  text-transform:none;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--signal);display:inline-block;border-radius:2px}
.sec-title{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700}
.sec-desc{margin-top:12px;color:var(--text-2);max-width:64ch;font-size:16px}
.lead{font-size:17px;color:var(--text-2);line-height:1.8}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;line-height:1;
  padding:0 22px;height:44px;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),
             border-color var(--t) var(--ease),transform var(--t) var(--ease),
             box-shadow var(--t) var(--ease);
  white-space:nowrap;
}
.btn-primary-c{background:var(--signal);color:#fff;border-color:var(--signal)}
.btn-primary-c:hover{background:var(--signal-dark);border-color:var(--signal-dark);color:#fff;transform:translateY(-1px)}
.btn-primary-c:active{transform:translateY(0)}
.btn-outline-c{background:transparent;color:var(--ink);border-color:rgba(16,18,22,.30)}
.btn-outline-c:hover{border-color:var(--ink);background:rgba(16,18,22,.04);color:var(--ink)}
.btn-dark-c{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-dark-c:hover{background:var(--ink-2);border-color:var(--ink-2);color:#fff;transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:var(--light-text);border-color:rgba(255,255,255,.34)}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.06);color:#fff}
.btn-sm{height:38px;font-size:14px;padding:0 16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

.txt-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--ink);position:relative}
.txt-link::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--signal);transition:width var(--t) var(--ease)}
.txt-link:hover::after{width:100%}
.txt-link i{transition:transform var(--t) var(--ease);font-size:12px}
.txt-link:hover i{transform:translateX(4px)}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  background:var(--signal-soft);color:var(--signal-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;padding:5px 12px;line-height:1.4}
.tag--pine{background:rgba(31,94,82,.10);color:var(--pine)}
.tag--line{background:transparent;border:1px solid var(--line);color:var(--text-2)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--pine);display:inline-block}
.dot--signal{background:var(--signal)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:rgba(247,246,241,.94);
  border-bottom:1px solid transparent;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(16,18,22,.02)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:var(--ink);letter-spacing:-.01em;flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{width:24px;height:24px;border-radius:7px;background:var(--ink);position:relative;flex:0 0 24px}
.brand-mark::before{content:"";position:absolute;inset:6px 6px auto auto;width:9px;height:9px;border-radius:2px;background:var(--signal)}
.brand-mark::after{content:"";position:absolute;left:6px;bottom:6px;width:9px;height:9px;border-radius:2px;border:1.5px solid rgba(244,243,239,.6)}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:12px}
.main-nav a{position:relative;font-size:14.5px;font-weight:500;color:var(--text-2);padding:6px 0}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--signal);transition:width var(--t) var(--ease)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{width:100%;background:var(--signal)}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.cmd-search{display:flex;align-items:center;gap:8px;width:256px;height:40px;padding:0 12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text-3);transition:border-color var(--t) var(--ease)}
.cmd-search:focus-within{border-color:var(--signal);box-shadow:0 0 0 2px rgba(255,90,36,.16)}
.cmd-search i{font-size:13px;color:var(--text-3)}
.cmd-search input{border:0;outline:none;background:transparent;font-size:14px;width:100%;color:var(--text)}
.cmd-search input::placeholder{color:var(--text-3)}
.kbd{font-size:11px;font-weight:600;color:var(--text-3);border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:var(--paper-2);white-space:nowrap}
.icon-btn{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);transition:all var(--t) var(--ease)}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.nav-cta{height:40px;padding:0 18px;font-size:14.5px}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center}
.offcanvas{background:var(--paper)}
.offcanvas-title{font-weight:700;font-size:16px}
.oc-nav{list-style:none;padding:0;margin:0}
.oc-nav li{border-bottom:1px solid var(--divider)}
.oc-nav a{display:block;padding:18px 4px;font-size:19px;font-weight:600;color:var(--ink)}
.oc-nav a.active{color:var(--signal)}
.oc-foot{position:absolute;left:0;right:0;bottom:0;padding:16px 24px 24px;border-top:1px solid var(--divider);background:var(--paper)}

@media (max-width:1199.98px){
  .cmd-search{width:210px}
  .main-nav{gap:24px}
}
@media (max-width:991.98px){
  .main-nav,.nav-tools .cmd-search,.nav-tools .icon-btn,.nav-tools .nav-cta{display:none}
  .burger{display:inline-flex}
  .nav-tools{margin-left:auto}
}

/* ---------- Hero ---------- */
.hero{position:relative;padding:84px 0 96px;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(255,90,36,.08), rgba(255,90,36,.02) 60%, transparent 70%);
  pointer-events:none;
}
.hero::before{
  content:"";position:absolute;left:-120px;top:-80px;width:520px;height:520px;pointer-events:none;
  background-image:linear-gradient(rgba(16,18,22,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,18,22,.045) 1px,transparent 1px);
  background-size:38px 38px;
  -webkit-mask-image:radial-gradient(circle at 40% 40%, #000, transparent 72%);
  mask-image:radial-gradient(circle at 40% 40%, #000, transparent 72%);
}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.1;letter-spacing:-.02em;margin:14px 0 0}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero-sub{margin-top:20px;font-size:17.5px;line-height:1.8;color:var(--text-2);max-width:56ch}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-trust{display:flex;gap:26px;margin-top:36px;flex-wrap:wrap;list-style:none;padding:0}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);font-weight:500}
.hero-trust i{color:var(--signal);font-size:13px}
.hero-visual{position:relative}
.visual-frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh);background:#fff;aspect-ratio:4/3;
}
.visual-frame img{width:100%;height:100%;object-fit:cover}
.visual-frame::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:34px 34px;pointer-events:none;
}
.visual-badge{
  position:absolute;left:18px;bottom:18px;background:rgba(16,18,22,.88);color:var(--light-text);
  border-radius:var(--r-card);padding:12px 16px;display:flex;align-items:center;gap:12px;backdrop-filter:none;
}
.visual-badge .num{font-size:20px;font-weight:700;color:var(--signal);line-height:1}
.visual-badge span{font-size:12.5px;color:rgba(244,243,239,.72);display:block;line-height:1.5}

@media (max-width:991.98px){
  .hero{padding:56px 0 64px}
  .hero-visual{margin-top:40px}
}

/* ---------- 编号长条列表 ---------- */
.step-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--divider)}
.step-item{display:flex;gap:20px;align-items:flex-start;padding:22px 8px;border-bottom:1px solid var(--divider);transition:background-color var(--t) var(--ease),transform var(--t) var(--ease)}
.step-item:hover{background:var(--paper-2);transform:translateX(4px)}
.step-num{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--signal-soft);color:var(--signal-dark);font-weight:700;font-size:15px;
}
.step-num--pine{background:rgba(31,94,82,.10);color:var(--pine)}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:4px}
.step-body p{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.7}

/* ---------- 版本节奏：封面区 ---------- */
.cover-card{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;display:block}
.cover-card .cover-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.cover-card img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.cover-card:hover img{transform:scale(1.02)}
.cover-card:hover{box-shadow:var(--sh-hover)}
.cover-tag{position:absolute;left:14px;top:14px;z-index:2;border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.06em;padding:5px 12px;line-height:1.4}
.cover-tag--fill{background:var(--signal);color:#fff}
.cover-tag--line{background:rgba(255,255,255,.92);border:1px solid var(--ink);color:var(--ink)}
.cover-time{position:absolute;right:14px;bottom:14px;z-index:2;background:rgba(16,18,22,.78);color:var(--light-text);font-size:12px;padding:5px 10px;border-radius:var(--r-pill);letter-spacing:.02em}
.cover-body{padding:18px 20px 20px}
.cover-body h3{font-size:17px;font-weight:600;line-height:1.5}
.cover-body p{margin:8px 0 0;font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 倒计时条 ---------- */
.countdown-bar{
  margin-top:24px;background:var(--ink);border-radius:var(--r-card);padding:22px 26px;
  display:flex;align-items:center;gap:28px;flex-wrap:wrap;
}
.cd-label .tag{margin-bottom:8px}
.cd-label strong{display:block;color:var(--light-text);font-size:16px;font-weight:600}
.cd-label span{font-size:13px;color:rgba(244,243,239,.6)}
.cd-timer{display:flex;align-items:flex-end;gap:10px;margin:0 auto;list-style:none;padding:0}
.cd-unit{text-align:center;min-width:56px}
.cd-num{display:block;font-size:clamp(26px,3.4vw,42px);font-weight:800;color:var(--signal);line-height:1;letter-spacing:-.02em}
.cd-num.is-sec{animation:breathe 1.6s var(--ease) infinite}
.cd-unit em{display:block;font-style:normal;font-size:12px;color:rgba(244,243,239,.55);margin-top:8px;letter-spacing:.06em}
.cd-sep{color:rgba(244,243,239,.25);font-size:24px;line-height:1;padding-bottom:22px}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.55}}

@media (max-width:767.98px){
  .countdown-bar{padding:18px 18px 22px;gap:16px}
  .cd-timer{width:100%;margin:0;justify-content:space-between;gap:4px}
  .cd-unit{min-width:0;flex:1}
  .cd-num{font-size:26px}
  .cd-sep{padding-bottom:18px;font-size:18px}
  .countdown-bar > .btn{width:100%}
}

/* ---------- 订阅表单 ---------- */
.subscribe{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px 32px;margin-top:24px}
.subscribe-row{display:flex;gap:32px;align-items:center;flex-wrap:wrap}
.subscribe-row > div:first-child{flex:1 1 320px}
.subscribe h3{font-size:19px;font-weight:700;margin-bottom:8px}
.subscribe p{margin:0;font-size:14.5px;color:var(--text-2)}
.inline-form{display:flex;gap:12px;flex:1 1 380px}
.form-control-c{
  height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--paper-2);
  padding:0 14px;font-size:15px;width:100%;outline:none;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.form-control-c::placeholder{color:var(--text-3)}
.form-control-c:focus{border-color:var(--signal);box-shadow:0 0 0 2px rgba(255,90,36,.18);background:#fff}
.form-control-c.is-error{border-color:var(--signal)}
.form-note{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12.5px;color:var(--text-3)}
.form-note input{width:15px;height:15px;accent-color:var(--signal)}
.form-error{display:none;color:var(--signal-dark);font-size:12.5px;margin-top:8px}
.form-error.show{display:block}
@media (max-width:575.98px){
  .subscribe{padding:22px 18px}
  .inline-form{flex-direction:column}
  .inline-form .btn{width:100%}
}

/* ---------- 历史版本横向滚动 ---------- */
.hscroll{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;mask-image:linear-gradient(90deg,#000 88%,transparent)}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.hscroll > *{flex:0 0 280px;scroll-snap-align:start}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:all var(--t) var(--ease)}
.mini-card:hover{border-color:rgba(16,18,22,.2);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.mini-card .thumb{aspect-ratio:16/9;background:var(--paper-2);overflow:hidden}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover}
.mini-card .mini-body{padding:14px 16px 16px}
.mini-card h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px}
.mini-meta{display:flex;gap:10px;font-size:12.5px;color:var(--text-3)}
.mini-card.is-disabled{opacity:.55;filter:grayscale(1);pointer-events:none}

/* ---------- CMS 列表卡片 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:991.98px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.post-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:all var(--t) var(--ease)}
.post-card:hover{border-color:rgba(16,18,22,.22);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.post-card:hover h3 a{border-bottom-color:var(--signal)}
.post-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#F1EFE8,#E8E5DC);display:flex;align-items:center;justify-content:center;color:var(--text-3)}
.post-thumb i{font-size:26px;opacity:.6}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17.5px;font-weight:700;line-height:1.5}
.post-body h3 a{color:var(--ink);border-bottom:1px solid transparent;transition:border-color var(--t) var(--ease)}
.post-body .excerpt{font-size:14px;color:var(--text-2);line-height:1.7;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);padding-top:6px}
.post-meta .arrow{margin-left:auto;color:var(--ink);font-size:12px;transition:transform var(--t) var(--ease)}
.post-card:hover .arrow{transform:translateX(4px)}
.empty-state{text-align:center;padding:64px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card)}
.empty-state i{font-size:28px;color:var(--text-3);display:block;margin-bottom:14px}
.empty-state p{color:var(--text-2);margin-bottom:12px}

/* ---------- 数据条 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat-item{padding:8px 4px}
.stat-num{font-size:clamp(30px,4vw,44px);font-weight:800;color:var(--ink);line-height:1;letter-spacing:-.02em}
.stat-num span{font-size:18px;font-weight:700;color:var(--signal);margin-left:2px}
.stat-item p{margin:12px 0 0;font-size:14.5px;color:var(--text-2);line-height:1.6}
.stat-item .stat-line{height:2px;width:36px;background:var(--signal);border-radius:2px;margin-top:16px}
@media (max-width:767.98px){.stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px}}

/* ---------- 图文交错 ---------- */
.split-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh);aspect-ratio:16/11}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-list{list-style:none;padding:0;margin:24px 0 0}
.split-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--divider);font-size:15px;color:var(--text-2)}
.split-list li i{color:var(--pine);font-size:13px;margin-top:6px}
.split-list li strong{color:var(--ink);font-weight:600}

/* ---------- 规格表 ---------- */
.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.spec-table thead th{background:var(--ink);color:var(--light-text);font-size:13.5px;font-weight:600;letter-spacing:.04em;text-align:left;padding:16px 20px}
.spec-table tbody td{padding:16px 20px;font-size:14.5px;color:var(--text-2);border-top:1px solid var(--divider);vertical-align:top}
.spec-table tbody tr:nth-child(even){background:var(--paper-2)}
.spec-table tbody td:first-child{color:var(--ink);font-weight:600;width:28%}
@media (max-width:767.98px){
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table thead{display:none}
  .spec-table tr{border-top:1px solid var(--divider);padding:6px 0}
  .spec-table tbody td{border:0;padding:8px 20px}
}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--divider)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;display:flex;align-items:center;gap:14px;
  padding:22px 24px;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;position:relative}
.faq-q::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:6px;background:var(--signal);border-radius:0 4px 4px 0;opacity:0;transition:opacity var(--t) var(--ease)}
.faq-q[aria-expanded="true"]::before{opacity:1}
.faq-q .faq-icon{margin-left:auto;color:var(--text-3);transition:transform var(--t) var(--ease);font-size:14px}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);color:var(--signal)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 360ms var(--ease)}
.faq-a-inner{padding:0 24px 20px 24px;font-size:15px;line-height:1.75;color:var(--text-2)}
.faq-q:hover{background:var(--paper-2)}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);color:var(--light-text);padding:80px 0;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,36,.16),transparent 68%)}
.cta-band .inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:12px}
.cta-band p{color:rgba(244,243,239,.72);margin:0;max-width:60ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(244,243,239,.72);padding:72px 0 0}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--light-text);font-weight:700;font-size:16.5px;margin-bottom:16px}
.footer-brand .brand-mark{background:#F4F3EF}
.footer-brand .brand-mark::before{background:var(--signal)}
.footer-brand .brand-mark::after{border-color:rgba(16,18,22,.4)}
.footer-desc{font-size:14px;line-height:1.75;max-width:34ch}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{width:36px;height:36px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.14);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(244,243,239,.7);font-size:13px}
.footer-social a:hover{border-color:var(--signal);color:var(--signal)}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(244,243,239,.5);font-weight:600;margin-bottom:18px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(244,243,239,.78)}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(244,243,239,.5)}
.footer-bottom a{color:rgba(244,243,239,.6)}
.footer-bottom a:hover{color:var(--signal)}
@media (max-width:991.98px){.footer-top{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:575.98px){.footer-top{grid-template-columns:1fr;padding-bottom:36px}.site-footer{padding-top:56px}}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.fade-up.in{opacity:1;transform:none}

/* ---------- 移动端底部 CTA ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;background:rgba(16,18,22,.96);
  padding:10px 16px;display:none;align-items:center;gap:12px;
  opacity:0;pointer-events:none;transform:translateY(8px);transition:all var(--t) var(--ease)}
.mobile-cta.show{opacity:1;pointer-events:auto;transform:none}
.mobile-cta span{color:rgba(244,243,239,.78);font-size:13px;flex:1}
@media (max-width:991.98px){.mobile-cta{display:flex}}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#101216;
  --ink-2:#2A2E36;
  --accent:#FF5A24;
  --accent-dark:#C93B0E;
  --accent-soft:rgba(255,90,36,.10);
  --green:#1F5E52;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --line:#E5E2D9;
  --divider:#EFEDE7;
  --text:#171A1F;
  --text-2:#5B6068;
  --text-3:#8A9099;
  --dark-text:#F4F3EF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,18,22,.05),0 8px 24px -12px rgba(16,18,22,.10);
  --shadow-md:0 16px 40px -16px rgba(16,18,22,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1035;
  background:rgba(247,246,241,.86);
  border-bottom:1px solid transparent;
  transition:background 300ms var(--ease),border-color 300ms var(--ease),box-shadow 300ms var(--ease);
}
.site-header.is-scrolled{
  background:var(--bg);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -18px rgba(16,18,22,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:24px;
  height:24px;
  border-radius:7px;
  background:var(--ink);
  position:relative;
  flex:0 0 24px;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:6px;
  top:6px;
  width:12px;
  height:12px;
  border-radius:3px;
  background:var(--accent);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:12px;
}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  transition:color 300ms var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 300ms var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.header-tools{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:250px;
  height:40px;
  padding:0 10px 0 12px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color 300ms var(--ease),box-shadow 300ms var(--ease);
}
.nav-search:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(255,90,36,.14);
}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  font-size:14px;
  color:var(--text);
  outline:none;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search .kbd{
  font-size:11px;
  line-height:1;
  padding:5px 7px;
  border-radius:var(--radius-pill);
  background:#F1EFE9;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:var(--card);
  color:var(--ink-2);
  transition:border-color 300ms var(--ease),color 300ms var(--ease),transform 300ms var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:var(--card);
  color:var(--ink);
  cursor:pointer;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background 300ms var(--ease),color 300ms var(--ease),border-color 300ms var(--ease),transform 300ms var(--ease),box-shadow 300ms var(--ease);
}
.btn-main{background:var(--accent);color:#fff}
.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(255,90,36,.9)}
.btn-main:active{transform:translateY(0)}
.btn-line{background:transparent;border-color:rgba(16,18,22,.28);color:var(--ink)}
.btn-line:hover{border-color:var(--ink);background:rgba(16,18,22,.04)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:26px 0 0}
.crumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.crumb li{display:inline-flex;align-items:center;gap:10px}
.crumb li+li::before{
  content:"/";
  color:var(--line);
}
.crumb a{color:var(--text-2);transition:color 300ms var(--ease)}
.crumb a:hover{color:var(--accent-dark)}
.crumb li[aria-current] span{color:var(--text);font-weight:600}

/* ============ 文章头区 ============ */
.article-hero{
  position:relative;
  padding:22px 0 30px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(247,246,241,.92) 0%,rgba(247,246,241,.97) 60%,var(--bg) 100%);
}
.article-head{position:relative;max-width:840px}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
}
.article-head h1{
  margin-top:18px;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
  color:var(--text);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:18px;
  font-size:14px;
  color:var(--text-3);
}
.article-meta .dot{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--line);
}
.article-meta time{font-variant-numeric:tabular-nums}

/* ============ 正文 ============ */
.article-section{padding:18px 0 80px}
.article-wrap{max-width:760px;margin:0 auto}
.article-body{
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  word-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:clamp(21px,2.2vw,26px);
  font-weight:700;
  line-height:1.3;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.16em;
  bottom:.16em;
  width:3px;
  border-radius:2px;
  background:var(--accent);
}
.article-body h3{
  margin:28px 0 12px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  margin:24px 0;
  padding:16px 20px;
  border-left:3px solid var(--accent);
  background:#FAF9F5;
  border-radius:0 var(--radius-img) var(--radius-img) 0;
}
.article-body table{
  width:100%;
  margin:24px 0;
  border-collapse:collapse;
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.article-body th{
  background:var(--ink);
  color:var(--dark-text);
  text-align:left;
  padding:12px 14px;
  font-weight:600;
}
.article-body td{
  padding:12px 14px;
  border:1px solid var(--line);
  color:var(--text-2);
}
.article-body tbody tr:nth-child(even){background:#FAF9F5}
.article-body img{
  margin:24px auto;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.article-body a{
  color:var(--accent-dark);
  border-bottom:1px solid rgba(255,90,36,.35);
  transition:border-color 300ms var(--ease);
}
.article-body a:hover{border-bottom-color:var(--accent-dark)}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:#F1EFE9;
  font-size:.9em;
}
.article-body pre{
  margin:24px 0;
  padding:18px 20px;
  border-radius:var(--radius-img);
  background:var(--ink);
  color:var(--dark-text);
  overflow:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body hr{
  margin:32px 0;
  border:0;
  border-top:1px solid var(--divider);
}
.empty-state{
  padding:64px 24px;
  text-align:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
}
.empty-state i{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  border-radius:var(--radius-pill);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:20px;
}
.empty-state p{margin:18px 0 20px;font-size:15px;color:var(--text-2)}

/* ============ 文末操作 ============ */
.post-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--divider);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  background:none;
  border:0;
  padding:8px 0;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  position:relative;
}
.link-more::after{
  content:"";
  position:absolute;
  left:0;
  bottom:4px;
  height:1px;
  width:100%;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 300ms var(--ease);
}
.link-more:hover::after{transform:scaleX(1)}
.link-more i{color:var(--accent);transition:transform 300ms var(--ease)}
.link-more:hover i{transform:translateY(-2px)}

/* ============ 板块通用 ============ */
.section{padding:80px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  line-height:1.24;
  color:var(--text);
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  position:relative;
  white-space:nowrap;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-3px;
  height:1px;
  width:100%;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 300ms var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link i{color:var(--accent);transition:transform 300ms var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ============ 相关推荐卡片 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card-link{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color 300ms var(--ease),box-shadow 300ms var(--ease),transform 300ms var(--ease);
}
.card-link:hover{
  border-color:rgba(16,18,22,.22);
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  background:#EFEDE7;
  overflow:hidden;
}
.card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 400ms var(--ease);
}
.card-link:hover .card-thumb img{transform:scale(1.03)}
.card-body{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:20px;
  flex:1;
}
.card-tag{
  align-self:flex-start;
  padding:4px 10px;
  border-radius:var(--radius-pill);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
}
.card-body h3{
  font-size:18px;
  font-weight:700;
  line-height:1.42;
  color:var(--text);
}
.card-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--divider);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.card-foot i{color:var(--accent);transition:transform 300ms var(--ease)}
.card-link:hover .card-foot i{transform:translateX(4px)}

/* ============ 编号长条 ============ */
.step-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.step-item{
  display:flex;
  gap:20px;
  align-items:flex-start;
  padding:22px 26px;
  border-bottom:1px solid var(--divider);
  transition:background 300ms var(--ease),transform 300ms var(--ease);
}
.step-item:last-child{border-bottom:0}
.step-item:hover{background:#FAF9F5;transform:translateX(4px)}
.step-no{
  flex:0 0 44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(31,94,82,.10);
  color:var(--green);
  font-weight:700;
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.step-item:nth-child(2n) .step-no{background:var(--accent-soft);color:var(--accent-dark)}
.step-text h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.step-text p{font-size:14px;color:var(--text-2);line-height:1.7}
.step-text a{color:var(--accent-dark);font-weight:600}

/* ============ 深色 CTA ============ */
.cta-band{
  background:var(--ink);
  color:var(--dark-text);
  padding:72px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  line-height:1.28;
  color:#fff;
}
.cta-inner p{
  margin-top:10px;
  font-size:15px;
  color:rgba(244,243,239,.72);
  max-width:560px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:var(--dark-text);
  padding:72px 0 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:#fff;
}
.footer-desc{
  margin-top:14px;
  font-size:14px;
  line-height:1.7;
  color:rgba(244,243,239,.66);
  max-width:300px;
}
.footer-social{
  display:flex;
  gap:10px;
  margin-top:20px;
}
.footer-social a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.16);
  color:rgba(244,243,239,.82);
  transition:color 300ms var(--ease),border-color 300ms var(--ease),transform 300ms var(--ease);
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:rgba(244,243,239,.6);
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{
  font-size:14px;
  color:rgba(244,243,239,.86);
  transition:color 300ms var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:rgba(244,243,239,.55);
  font-variant-numeric:tabular-nums;
}

/* ============ 移动端抽屉 ============ */
.offcanvas.mobile-nav{
  background:var(--bg);
  width:320px;
  border:0;
}
.mobile-nav .offcanvas-header{
  padding:20px 22px;
  border-bottom:1px solid var(--line);
}
.mobile-nav .offcanvas-body{
  padding:12px 22px 0;
  display:flex;
  flex-direction:column;
}
.mobile-nav .m-nav-links{display:flex;flex-direction:column;gap:4px;padding:12px 0}
.mobile-nav .m-nav-links a{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  padding:14px 0;
  border-bottom:1px solid var(--divider);
}
.mobile-nav .m-nav-links a.active{color:var(--accent-dark)}
.mobile-nav .m-cta{
  margin-top:auto;
  padding:20px 0 24px;
}
.mobile-nav .m-cta .btn{width:100%}

/* ============ 入场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 600ms var(--ease),transform 600ms var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search{width:200px}
  .main-nav{gap:24px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1.2fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:64px;gap:16px}
  .brand{font-size:16px}
  .section{padding:64px 0}
  .article-section{padding:12px 0 64px}
  .cta-band{padding:56px 0}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:32px}
  .footer-desc{max-width:none}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section{padding:56px 0}
  .article-head h1{font-size:clamp(24px,6.4vw,32px)}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .step-item{padding:18px 18px;gap:14px}
  .link-more{margin-left:0;width:100%;justify-content:flex-start}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .article-body table{font-size:13px}
  .article-body th,.article-body td{padding:10px 12px}
}
@media (max-width:519px){
  .btn{width:100%}
  .btn.nav-cta{display:none}
  .post-actions .btn{width:100%}
  .article-meta{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none !important;
    transition:none !important;
  }
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
    --ink:#101216;
    --ink-2:#2A2E36;
    --orange:#FF5A24;
    --orange-dark:#C93B0E;
    --orange-soft:rgba(255,90,36,.10);
    --green:#1F5E52;
    --bg:#F7F6F1;
    --card:#FFFFFF;
    --line:#E5E2D9;
    --divider:#EFEDE7;
    --soft:#FAF9F5;
    --t1:#171A1F;
    --t2:#5B6068;
    --t3:#8A9099;
    --light-text:#F4F3EF;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --r-img:12px;
    --sh-1:0 1px 2px rgba(16,18,22,.05), 0 8px 24px -12px rgba(16,18,22,.10);
    --sh-2:0 16px 40px -16px rgba(16,18,22,.16);
    --ease:cubic-bezier(.22,1,.36,1);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--t1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
  button,input{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  ::selection{background:rgba(255,90,36,.18)}
  :focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
  @media (max-width:767px){.container{padding:0 20px}}

  /* ---------- 通用标题与板块 ---------- */
  .section{padding:104px 0}
  .section-tight{padding:72px 0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.06em;color:var(--orange);font-weight:600;
    text-transform:none;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);border-radius:2px}
  .h1{
    font-size:clamp(32px,5vw,58px);font-weight:800;letter-spacing:-.02em;line-height:1.08;color:var(--t1);
  }
  .h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.2;color:var(--t1);letter-spacing:-.01em}
  .h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--t1)}
  .lead{font-size:17px;color:var(--t2);line-height:1.75;max-width:62ch}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
  .section-head p{color:var(--t2);font-size:15px;margin-top:10px;max-width:64ch}

  /* ---------- 按钮 ---------- */
  .btn-main,.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease);
    border:1px solid transparent;white-space:nowrap;
  }
  .btn-main{background:var(--orange);color:#fff;border-color:var(--orange)}
  .btn-main:hover{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
  .btn-main:active{transform:translateY(0)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:rgba(16,18,22,.3)}
  .btn-ghost:hover{color:var(--ink);border-color:var(--ink);background:rgba(16,18,22,.04);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .btn-main[disabled],.btn-ghost[disabled]{opacity:.4;pointer-events:none}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--t1);
    background-image:linear-gradient(var(--orange),var(--orange));
    background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
    transition:background-size .3s var(--ease),color .3s var(--ease);
  }
  .link-arrow i{transition:transform .3s var(--ease)}
  .link-arrow:hover{color:var(--orange-dark);background-size:100% 1px}
  .link-arrow:hover i{transform:translateX(4px)}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:1040;
    background:rgba(247,246,241,.94);
    border-bottom:1px solid transparent;
    transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(16,18,22,.03)}
  .nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--t1);letter-spacing:-.01em;flex:0 0 auto}
  .brand:hover{color:var(--t1)}
  .brand-mark{
    width:24px;height:24px;border-radius:7px;flex:0 0 24px;
    background:linear-gradient(135deg,var(--orange) 0%,var(--orange) 48%,var(--ink) 48%,var(--ink) 100%);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);
  }
  .main-nav{display:flex;align-items:center;gap:32px;margin-left:8px}
  .main-nav a{
    position:relative;font-size:15px;color:var(--t2);padding:6px 0;font-weight:500;
    transition:color .3s var(--ease);
  }
  .main-nav a::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--orange);
    transition:width .3s var(--ease);
  }
  .main-nav a:hover{color:var(--t1)}
  .main-nav a:hover::after{width:100%}
  .main-nav a.active{color:var(--t1);font-weight:700}
  .main-nav a.active::after{width:100%;height:2px}
  .main-nav a.active::before{
    content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
    width:6px;height:6px;border-radius:50%;background:var(--orange);
  }
  .nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
  .command-search{
    display:flex;align-items:center;gap:10px;width:250px;height:40px;padding:0 12px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .command-search:hover{border-color:rgba(16,18,22,.28)}
  .command-search:focus-within{border-color:var(--orange);box-shadow:0 0 0 2px var(--orange-soft)}
  .command-search i{color:var(--t3);font-size:13px}
  .command-search input{border:0;outline:0;background:transparent;font-size:14px;color:var(--t1);width:100%;min-width:0}
  .command-search input::placeholder{color:var(--t3)}
  .kbd{
    flex:0 0 auto;font-size:11px;color:var(--t3);border:1px solid var(--line);
    border-radius:6px;padding:1px 6px;background:var(--soft);letter-spacing:.02em;
  }
  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
    color:var(--t2);background:#fff;transition:all .3s var(--ease);
  }
  .icon-btn:hover{color:var(--ink);border-color:rgba(16,18,22,.28)}
  .nav-cta{height:40px;padding:0 18px;font-size:14px}
  .nav-toggle{
    display:none;align-items:center;justify-content:center;width:44px;height:44px;
    border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);
  }
  .offcanvas{background:var(--bg)}
  .offcanvas .oc-nav a{
    display:block;font-size:20px;font-weight:600;color:var(--t1);padding:16px 0;
    border-bottom:1px solid var(--divider);
  }
  .offcanvas .oc-nav a.active{color:var(--orange)}
  .oc-cta{position:sticky;bottom:0;padding-top:16px;background:var(--bg)}
  .oc-cta .btn-main{width:100%}

  /* ---------- 面包屑 ---------- */
  .breadcrumb-bar{padding:20px 0 0}
  .crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--t3)}
  .crumbs a{color:var(--t2)}
  .crumbs a:hover{color:var(--orange-dark)}
  .crumbs span[aria-current]{color:var(--t1);font-weight:600}
  .crumbs i{font-size:10px;color:var(--t3)}

  /* ---------- Hero ---------- */
  .hero{padding:64px 0 88px;position:relative;overflow:hidden}
  .hero::after{
    content:"";position:absolute;right:-140px;bottom:-160px;width:520px;height:520px;
    background:radial-gradient(circle at center,rgba(255,90,36,.08) 0%,rgba(255,90,36,0) 68%);
    pointer-events:none;
  }
  .hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
  .hero h1{margin:18px 0 20px}
  .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
  .trust-row{display:flex;gap:26px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
  .trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t2)}
  .trust-item i{color:var(--green);font-size:13px}
  .hero-visual{position:relative}
  .visual-frame{
    position:relative;border-radius:var(--r-img);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--sh-1);aspect-ratio:16/11;background:#fff;
  }
  .visual-frame img{width:100%;height:100%;object-fit:cover}
  .visual-frame::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
    background-size:44px 44px;opacity:.35;pointer-events:none;
  }
  .visual-badge{
    position:absolute;left:20px;bottom:20px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);padding:14px 18px;box-shadow:var(--sh-1);
  }
  .visual-badge strong{display:block;font-size:20px;font-weight:800;letter-spacing:-.01em}
  .visual-badge span{font-size:12px;color:var(--t3);letter-spacing:.06em}

  /* ---------- 标签胶囊 ---------- */
  .chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
    background:#fff;font-size:13px;color:var(--t2);letter-spacing:.02em;
    transition:all .3s var(--ease);cursor:default;
  }
  .chip:hover{border-color:rgba(16,18,22,.28);color:var(--t1)}
  .chip.is-on{background:var(--orange-soft);border-color:rgba(255,90,36,.35);color:var(--orange-dark);font-weight:600}
  .tag{
    display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--r-pill);
    background:var(--orange-soft);color:var(--orange-dark);font-size:12px;font-weight:600;letter-spacing:.06em;
  }
  .tag-green{background:rgba(31,94,82,.1);color:var(--green)}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;padding-top:8px}
  .timeline::before{
    content:"";position:absolute;left:75px;top:16px;bottom:34px;width:1px;background:var(--line);
  }
  .tl-item{position:relative;display:grid;grid-template-columns:150px minmax(0,1fr);gap:24px;padding-bottom:26px}
  .tl-dot{
    position:absolute;left:70px;top:24px;width:11px;height:11px;border-radius:50%;
    background:#fff;border:2px solid var(--t3);
  }
  .tl-dot.is-current{background:var(--orange);border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,90,36,.14)}
  .tl-dot.is-done{background:var(--divider);border-color:var(--line)}
  .tl-meta{text-align:right;padding-right:30px;padding-top:14px}
  .tl-meta time{display:block;font-size:15px;font-weight:700;color:var(--t1);letter-spacing:.01em}
  .tl-meta span{display:block;font-size:12px;color:var(--t3);letter-spacing:.06em;margin-top:2px}
  .tl-card{
    display:grid;grid-template-columns:190px minmax(0,1fr);gap:22px;
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,18,22,.2)}
  .tl-thumb{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--soft)}
  .tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .tl-card:hover .tl-thumb img{transform:scale(1.02)}
  .tl-body .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
  .tl-body h3{margin-bottom:8px}
  .tl-body p{font-size:14px;color:var(--t2);line-height:1.7}
  .meta-list{display:flex;gap:20px;flex-wrap:wrap;margin-top:14px;padding-top:14px;border-top:1px solid var(--divider)}
  .meta-list li{font-size:13px;color:var(--t2)}
  .meta-list li b{color:var(--t1);font-weight:600}
  .tl-actions{display:flex;align-items:center;gap:18px;margin-top:16px;flex-wrap:wrap}

  /* ---------- 编号长条 ---------- */
  .step-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
  .step-item{
    display:grid;grid-template-columns:76px minmax(0,1fr);gap:22px;align-items:flex-start;
    padding:26px 28px;border-bottom:1px solid var(--divider);
    transition:background-color .3s var(--ease),transform .3s var(--ease);
  }
  .step-item:last-child{border-bottom:0}
  .step-item:hover{background:var(--soft);transform:translateX(4px)}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
    border-radius:12px;background:rgba(31,94,82,.1);color:var(--green);
    font-size:15px;font-weight:700;letter-spacing:.04em;
  }
  .step-item h3{margin-bottom:6px}
  .step-item p{font-size:14px;color:var(--t2)}

  /* ---------- 规格表 ---------- */
  .table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
  .spec-table{width:100%;border-collapse:collapse}
  .spec-table thead th{
    background:var(--ink);color:var(--light-text);font-size:13px;font-weight:600;
    letter-spacing:.06em;padding:16px 20px;text-align:left;white-space:nowrap;
  }
  .spec-table tbody td{padding:16px 20px;font-size:14px;color:var(--t2);border-top:1px solid var(--divider)}
  .spec-table tbody tr:nth-child(even){background:var(--soft)}
  .spec-table tbody td:first-child{color:var(--t1);font-weight:600}
  .spec-table tbody tr:hover{background:#f4f2ec}

  /* ---------- 数据条 ---------- */
  .stat-band{
    display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px 32px;
  }
  .stat-item strong{display:block;font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-.02em;color:var(--t1)}
  .stat-item strong em{font-style:normal;font-size:15px;font-weight:600;color:var(--t3);margin-left:4px}
  .stat-item span{display:block;font-size:13px;color:var(--t2);margin-top:6px}

  /* ---------- 订阅 ---------- */
  .notify-card{
    display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px 34px;
    box-shadow:var(--sh-1);
  }
  .notify-card h2{font-size:22px;font-weight:700;margin-bottom:8px}
  .notify-card p{font-size:14px;color:var(--t2)}
  .notify-form{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-start}
  .notify-form input[type="email"]{
    flex:1 1 240px;height:44px;padding:0 16px;border-radius:var(--r-btn);
    border:1px solid var(--line);background:#fff;font-size:15px;color:var(--t1);
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .notify-form input[type="email"]::placeholder{color:var(--t3)}
  .notify-form input[type="email"]:focus{outline:0;border-color:var(--orange);box-shadow:0 0 0 2px var(--orange-soft)}
  .notify-form.is-error input[type="email"]{border-color:var(--orange)}
  .form-foot{flex:1 1 100%;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .form-foot label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--t3)}
  .form-foot input[type="checkbox"]{width:15px;height:15px;accent-color:var(--orange)}
  .form-hint{font-size:12px;color:var(--t3)}
  .form-hint.is-error{color:var(--orange-dark)}

  /* ---------- FAQ ---------- */
  .faq-accordion{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
  .faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--divider);background:transparent}
  .faq-accordion .accordion-item:last-child{border-bottom:0}
  .faq-accordion .accordion-button{
    position:relative;background:transparent;box-shadow:none;border-radius:0;
    font-size:17px;font-weight:600;color:var(--t1);padding:22px 60px 22px 26px;
    transition:background-color .3s var(--ease),color .3s var(--ease);
  }
  .faq-accordion .accordion-button::after{display:none}
  .faq-accordion .accordion-button::before{
    content:"";position:absolute;left:0;top:50%;width:6px;height:26px;border-radius:3px;
    background:var(--orange);transform:translateY(-50%) scaleY(0);
    transform-origin:center;transition:transform .3s var(--ease);
  }
  .faq-accordion .accordion-button:not(.collapsed){background:#fff;color:var(--t1)}
  .faq-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(1)}
  .faq-accordion .accordion-button:hover{background:var(--soft)}
  .faq-sign{
    position:absolute;right:26px;top:50%;transform:translateY(-50%);
    width:16px;height:16px;pointer-events:none;
  }
  .faq-sign::before,.faq-sign::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);border-radius:2px;
    transform:translate(-50%,-50%);transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .faq-sign::before{width:14px;height:2px}
  .faq-sign::after{width:2px;height:14px}
  .accordion-button:not(.collapsed) .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-accordion .accordion-body{
    padding:2px 26px 24px 26px;font-size:15px;line-height:1.75;color:var(--t2);
  }

  /* ---------- CTA 带 ---------- */
  .cta-band{position:relative;background:var(--ink);color:var(--light-text);overflow:hidden;border-radius:0}
  .cta-band .bg{
    position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;background-position:center;opacity:.16;mix-blend-mode:luminosity;
  }
  .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;padding:72px 0;flex-wrap:wrap}
  .cta-inner h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:#fff;letter-spacing:-.01em}
  .cta-inner p{color:rgba(244,243,239,.72);font-size:15px;margin-top:12px;max-width:56ch}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:rgba(244,243,239,.72);padding:72px 0 32px;margin-top:0}
  .footer-top{display:grid;grid-template-columns:4fr 3fr 3fr 3fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px}
  .footer-desc{font-size:14px;margin-top:16px;max-width:30ch;line-height:1.7}
  .footer-social{display:flex;gap:10px;margin-top:22px}
  .footer-social a{
    display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
    border-radius:10px;border:1px solid rgba(255,255,255,.14);color:rgba(244,243,239,.8);
    transition:all .3s var(--ease);
  }
  .footer-social a:hover{color:var(--orange);border-color:rgba(255,90,36,.5)}
  .footer-col h4{font-size:13px;letter-spacing:.06em;color:rgba(244,243,239,.55);font-weight:600;margin-bottom:18px}
  .footer-col li{margin-bottom:12px}
  .footer-col a{font-size:14px;color:rgba(244,243,239,.78)}
  .footer-col a:hover{color:var(--orange)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
    font-size:13px;color:rgba(244,243,239,.55);
  }

  /* ---------- 入场动效 ---------- */
  .fade-up{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .fade-up.in{opacity:1;transform:none}
  .pulse{animation:pulse 1.6s ease-in-out infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    .fade-up{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1199px){
    .hero-grid{grid-template-columns:6fr 5fr;gap:40px}
    .main-nav{gap:24px}
    .command-search{width:210px}
    .footer-top{grid-template-columns:2fr 1fr 1fr 1fr}
  }
  @media (max-width:991px){
    .section{padding:84px 0}
    .section-tight{padding:64px 0}
    .main-nav,.command-search,.nav-right .icon-btn{display:none}
    .nav-toggle{display:inline-flex}
    .hero{padding:44px 0 72px}
    .hero-grid{grid-template-columns:1fr;gap:40px}
    .hero-visual{order:2}
    .notify-card{grid-template-columns:1fr;gap:22px}
    .footer-top{grid-template-columns:1fr 1fr;gap:32px}
    .cta-inner{padding:60px 0}
  }
  @media (max-width:767px){
    .section{padding:60px 0}
    .timeline::before{display:none}
    .tl-item{grid-template-columns:1fr;gap:12px;padding-bottom:20px}
    .tl-dot{display:none}
    .tl-meta{text-align:left;padding:0}
    .tl-meta time{font-size:13px;color:var(--t2);letter-spacing:.04em}
    .tl-card{grid-template-columns:1fr;gap:16px;padding:16px}
    .step-item{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:22px 20px}
    .stat-band{grid-template-columns:1fr 1fr;gap:26px;padding:28px 22px}
    .spec-table thead{display:none}
    .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
    .spec-table tbody tr{border-top:1px solid var(--line);padding:8px 0}
    .spec-table tbody tr:first-child{border-top:0}
    .spec-table tbody td{border:0;padding:8px 20px;display:flex;justify-content:space-between;gap:16px}
    .spec-table tbody td::before{content:attr(data-label);color:var(--t3);font-size:13px;font-weight:600;letter-spacing:.04em}
    .spec-table tbody td:first-child{color:var(--t1)}
    .faq-accordion .accordion-button{font-size:16px;padding:20px 52px 20px 22px}
    .faq-accordion .accordion-body{padding:2px 22px 20px 22px}
    .footer-top{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (max-width:575px){
    .hero-actions .btn-main,.hero-actions .btn-ghost,.notify-form .btn-main{width:100%}
    .notify-form input[type="email"]{flex:1 1 100%}
    .stat-band{grid-template-columns:1fr}
    .trust-row{gap:16px;flex-direction:column}
  }

/* roulang page: category2 */
:root{
  --ink:#101216;
  --ink-soft:#2A2E36;
  --accent:#FF5A24;
  --accent-dark:#C93B0E;
  --accent-soft:rgba(255,90,36,.10);
  --green:#1F5E52;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --line:#E5E2D9;
  --divider:#EFEDE7;
  --text:#171A1F;
  --text-2:#5B6068;
  --text-3:#8A9099;
  --on-dark:#F4F3EF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,18,22,.05), 0 8px 24px -12px rgba(16,18,22,.10);
  --shadow-hover:0 16px 40px -16px rgba(16,18,22,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:72px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease),border-color .3s var(--ease);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ---------- 通用按钮 ---------- */
.btn-own{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-solid{background:var(--accent);color:#fff;box-shadow:0 8px 20px -12px rgba(255,90,36,.85);}
.btn-solid:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:rgba(16,18,22,.30);color:var(--ink);}
.btn-outline:hover{background:rgba(16,18,22,.04);border-color:var(--ink);color:var(--ink);}
.btn-text{height:auto;padding:0;color:var(--ink);font-weight:600;}
.btn-text i{transition:transform .3s var(--ease);}
.btn-text:hover i{transform:translateX(4px);}
.btn-text:hover{box-shadow:inset 0 -1px 0 0 var(--accent);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-dark);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.tag-green{background:rgba(31,94,82,.10);color:var(--green);}
.tag-plain{background:#fff;border:1px solid var(--line);color:var(--text-2);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,241,.94);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{background:#FFFFFF;border-bottom-color:var(--line);}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:24px;height:24px;border-radius:7px;flex:0 0 auto;
  background:var(--ink);position:relative;overflow:hidden;
}
.brand-mark::before{content:"";position:absolute;inset:5px;border-radius:3px;background:var(--accent);}
.brand-mark::after{content:"";position:absolute;right:2px;bottom:2px;width:8px;height:8px;border-radius:50%;background:var(--green);}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:12px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--ink);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:250px;height:40px;padding:0 12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-3);font-size:14px;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.command-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(255,90,36,.18);}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  padding:1px 6px;border-radius:6px;border:1px solid var(--line);
  background:#FAF9F5;font-size:11px;color:var(--text-3);letter-spacing:.04em;
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-soft);
  transition:border-color .3s var(--ease),color .3s var(--ease),background-color .3s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);}
.btn-nav{height:40px;padding:0 18px;}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;cursor:pointer;
}
/* 移动端抽屉 */
.offcanvas.own-drawer{background:var(--ink);color:var(--on-dark);width:320px;}
.own-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 22px;border-bottom:1px solid rgba(255,255,255,.10);
}
.own-drawer .drawer-head .brand-text{color:var(--on-dark);font-weight:700;}
.own-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.7;}
.own-drawer .drawer-body{padding:18px 22px 24px;display:flex;flex-direction:column;gap:4px;}
.own-drawer .drawer-body a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 2px;font-size:18px;font-weight:600;color:var(--on-dark);
  border-bottom:1px solid rgba(255,255,255,.10);
}
.own-drawer .drawer-body a:hover{color:var(--accent);}
.own-drawer .drawer-body a.active{color:var(--accent);}
.own-drawer .drawer-foot{padding:20px 22px 28px;border-top:1px solid rgba(255,255,255,.10);margin-top:auto;}
.own-drawer .drawer-foot .btn-own{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:22px 0 0;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:var(--text-3);opacity:.7;}
.crumbs .current{color:var(--text);font-weight:600;}

/* ---------- 页面首屏 ---------- */
.page-hero{padding:48px 0 0;}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--accent-dark);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.page-hero h1{
  font-size:clamp(32px,4.2vw,52px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
  margin-bottom:20px;
}
.page-hero .lead{font-size:17px;line-height:1.8;color:var(--text-2);max-width:34em;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;}
.hero-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/10;background:#EDEBE4;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(16,18,22,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(16,18,22,.05) 1px,transparent 1px);
  background-size:40px 40px;pointer-events:none;
}
.hero-media .media-badge{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;background:rgba(16,18,22,.86);color:var(--on-dark);
  font-size:12px;letter-spacing:.06em;font-weight:600;
}
.hero-media .media-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);}

/* ---------- 板块 ---------- */
.section{padding:104px 0 0;}
.section-head{max-width:46em;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.22;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;margin-bottom:0;}
.section-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.section-head.split p{max-width:34em;}

/* ---------- 环境档位卡片 ---------- */
.env-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.env-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.env-card:hover{border-color:rgba(16,18,22,.22);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.env-card .env-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent-dark);font-size:18px;margin-bottom:18px;
}
.env-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.env-card p{color:var(--text-2);font-size:15px;margin-bottom:16px;}
.env-card ul{display:flex;flex-direction:column;gap:9px;}
.env-card li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);}
.env-card li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;
  background:var(--green);opacity:.85;
}

/* ---------- 规格对照表 ---------- */
.table-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.spec-table{width:100%;border-collapse:collapse;font-size:15px;}
.spec-table thead th{
  background:var(--ink);color:var(--on-dark);text-align:left;
  padding:16px 20px;font-size:13px;font-weight:600;letter-spacing:.06em;white-space:nowrap;
}
.spec-table tbody td{
  padding:16px 20px;border-top:1px solid var(--divider);color:var(--text-2);vertical-align:top;
}
.spec-table tbody tr:nth-child(even){background:#FAF9F5;}
.spec-table tbody tr:hover{background:#F4F2EB;}
.spec-table td.item{color:var(--text);font-weight:600;white-space:nowrap;}
.spec-table td strong{color:var(--ink);font-weight:600;}
.table-note{padding:16px 20px;font-size:13px;color:var(--text-3);border-top:1px solid var(--divider);background:#fff;}

/* ---------- 步骤长条 ---------- */
.step-list{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.step-item{
  display:flex;gap:22px;align-items:flex-start;padding:24px 26px;
  border-bottom:1px solid var(--divider);
  transition:background-color .3s var(--ease),transform .3s var(--ease);
}
.step-item:last-child{border-bottom:0;}
.step-item:hover{background:#FAF9F5;transform:translateX(4px);}
.num-block{
  flex:0 0 auto;width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,94,82,.10);color:var(--green);
  font-weight:700;font-size:16px;letter-spacing:.02em;
}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.step-item p{color:var(--text-2);font-size:15px;margin-bottom:0;}

/* ---------- 非对等图文分栏 ---------- */
.split-7-5{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:start;}
.diff-list{display:flex;flex-direction:column;gap:18px;}
.diff-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.diff-item:hover{border-color:rgba(16,18,22,.22);box-shadow:var(--shadow);}
.diff-item h3{font-size:17px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.diff-item h3 i{color:var(--accent);font-size:14px;}
.diff-item p{color:var(--text-2);font-size:15px;margin-bottom:0;}
.side-media{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.side-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.side-media .side-body{padding:22px 24px;}
.side-media h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.side-media p{color:var(--text-2);font-size:14px;margin-bottom:0;}

/* ---------- 自检清单 ---------- */
.check-panel{
  background:var(--ink);border-radius:var(--r-card);padding:40px;
  color:var(--on-dark);
}
.check-panel h2{color:var(--on-dark);font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.check-panel .sub{color:rgba(244,243,239,.68);font-size:15px;margin-bottom:26px;}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 32px;}
.check-grid li{
  display:flex;align-items:flex-start;gap:12px;font-size:15px;
  padding:12px 0;border-bottom:1px solid rgba(255,255,255,.10);color:rgba(244,243,239,.9);
}
.check-grid li i{color:var(--accent);margin-top:5px;font-size:13px;}
.check-grid li span.num{color:var(--accent);font-weight:700;min-width:26px;}

/* ---------- 提醒气泡 ---------- */
.note-bubble{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(255,90,36,.08);border:1px solid rgba(255,90,36,.20);
  border-radius:12px;padding:18px 22px;margin-top:28px;
}
.note-bubble i{color:var(--accent-dark);font-size:16px;margin-top:4px;}
.note-bubble p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin-top:104px;background:var(--ink);border-radius:var(--r-card);
  padding:52px 48px;display:flex;flex-wrap:wrap;gap:26px;
  align-items:center;justify-content:space-between;
}
.cta-band h2{color:var(--on-dark);font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-band p{color:rgba(244,243,239,.68);font-size:15px;margin-bottom:0;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-outline{border-color:rgba(244,243,239,.35);color:var(--on-dark);}
.cta-band .btn-outline:hover{background:rgba(244,243,239,.08);border-color:var(--on-dark);color:var(--on-dark);}

/* ---------- 相关入口 ---------- */
.rel-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.rel-item{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.rel-item:hover{border-color:rgba(16,18,22,.22);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.rel-item h3{font-size:18px;font-weight:600;margin-bottom:8px;transition:box-shadow .3s var(--ease);}
.rel-item:hover h3{box-shadow:inset 0 -1px 0 0 var(--accent);}
.rel-item p{color:var(--text-2);font-size:14px;margin-bottom:14px;}
.rel-item .go{font-size:14px;font-weight:600;color:var(--accent-dark);display:inline-flex;align-items:center;gap:8px;}
.rel-item .go i{transition:transform .3s var(--ease);}
.rel-item:hover .go i{transform:translateX(4px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark);margin-top:110px;padding:72px 0 0;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-mark::before{background:var(--on-dark);}
.footer-brand .brand-mark::after{background:var(--green);}
.footer-desc{color:rgba(244,243,239,.66);font-size:14px;max-width:22em;margin-bottom:20px;}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;
  color:rgba(244,243,239,.82);transition:border-color .3s var(--ease),color .3s var(--ease),background-color .3s var(--ease);
}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,90,36,.08);}
.footer-col h4{font-size:13px;letter-spacing:.10em;color:rgba(244,243,239,.62);font-weight:600;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(244,243,239,.86);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(244,243,239,.56);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .command-search{width:200px;}
  .main-nav{gap:24px;}
  .hero-grid{gap:40px;}
  .split-7-5{grid-template-columns:7fr 5fr;gap:36px;}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .hamburger{display:inline-flex;}
  .nav-wrap{gap:14px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding-top:36px;}
  .eyebrow{margin-bottom:14px;}
  .page-hero .lead{font-size:16px;}
  .section{padding-top:76px;}
  .env-grid{grid-template-columns:1fr;}
  .split-7-5{grid-template-columns:1fr;gap:28px;}
  .check-grid{grid-template-columns:1fr;}
  .check-panel{padding:30px 24px;}
  .cta-band{margin-top:76px;padding:36px 28px;flex-direction:column;align-items:flex-start;}
  .rel-list{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:34px;}
  .site-footer{margin-top:80px;padding-top:56px;}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px;}
  .page-hero h1{font-size:clamp(28px,7vw,36px);}
  .section{padding-top:60px;}
  .env-card{padding:24px 20px;}
  .step-item{padding:20px;gap:16px;}
  .step-item:hover{transform:none;}
  .spec-table thead{display:none;}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%;}
  .spec-table tr{
    border:1px solid var(--line);border-radius:var(--r-card);
    margin:14px;padding:8px 0;background:#fff;
  }
  .spec-table tr:nth-child(even){background:#fff;}
  .spec-table td{
    display:flex;justify-content:space-between;gap:18px;
    border-top:0;padding:10px 16px;font-size:14px;text-align:right;
  }
  .spec-table td::before{
    content:attr(data-label);color:var(--text-3);font-weight:600;font-size:13px;text-align:left;flex:0 0 auto;
  }
  .spec-table td.item{
    font-size:16px;text-align:left;border-bottom:1px solid var(--divider);padding-bottom:12px;margin-bottom:6px;
  }
  .spec-table td.item::before{display:none;}
  .table-note{border-top:0;padding-top:4px;}
  .cta-band .btn-own{width:100%;}
  .footer-top{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575.98px){
  .hero-actions .btn-own{width:100%;}
  .hero-media{aspect-ratio:4/3;}
  .hero-facts{gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#101216;
  --ink-2:#2A2E36;
  --orange:#FF5A24;
  --orange-dark:#C93B0E;
  --orange-soft:rgba(255,90,36,.10);
  --green:#1F5E52;
  --green-soft:rgba(31,94,82,.10);
  --bg:#F7F6F1;
  --bg-soft:#FAF9F5;
  --card:#FFFFFF;
  --line:#E5E2D9;
  --line-soft:#EFEDE7;
  --text:#171A1F;
  --text-2:#5B6068;
  --text-3:#8A9099;
  --on-dark:#F4F3EF;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,18,22,.05),0 8px 24px -12px rgba(16,18,22,.10);
  --shadow-2:0 16px 40px -16px rgba(16,18,22,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.num,.step-num,.stat-value,time,table{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:0;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-rl-primary{background:var(--orange);color:#fff}
.btn-rl-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(255,90,36,.65)}
.btn-rl-primary:active{transform:translateY(0)}
.btn-rl-ghost{background:transparent;color:var(--text);border:1px solid rgba(16,18,22,.3)}
.btn-rl-ghost:hover{border-color:var(--ink);background:rgba(16,18,22,.04);transform:translateY(-1px)}
.btn-rl-dark{background:var(--ink);color:var(--on-dark)}
.btn-rl-dark:hover{background:#000;color:#fff;transform:translateY(-1px)}
.btn-rl-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--text);position:relative}
.link-arrow::after{content:"";position:absolute;left:0;right:20px;bottom:-3px;height:1px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.link-arrow:hover{color:var(--orange)}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow i{transition:transform .3s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--orange-soft);color:var(--orange-dark);font-size:12px;font-weight:600;letter-spacing:.06em}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(247,246,241,.94);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{position:relative;width:24px;height:24px;border-radius:7px;background:var(--ink);flex:0 0 24px}
.brand-mark::after{content:"";position:absolute;top:7px;right:7px;width:10px;height:10px;border-radius:3px;background:var(--orange)}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:6px}
.main-nav a{position:relative;padding:8px 0;font-size:15px;color:var(--text-2);white-space:nowrap}
.main-nav a::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:1px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--text);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.nav-search{position:relative;margin-left:auto;width:250px;flex:0 0 auto}
.nav-search input{
  width:100%;height:40px;padding:0 52px 0 38px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
  font-size:14px;outline:none;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,90,36,.14)}
.nav-search .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--text-3)}
.nav-search kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  padding:2px 7px;border:1px solid var(--line);border-radius:6px;
  background:var(--bg-soft);font-size:11px;color:var(--text-3);font-family:inherit;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--text-2);
  transition:border-color .3s var(--ease),color .3s var(--ease),background .3s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);background:var(--bg-soft)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.burger{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);cursor:pointer;
}
.burger:hover{border-color:var(--ink)}

/* ---------- 抽屉 ---------- */
.rl-drawer{width:320px;max-width:88vw;background:var(--bg);border-left:1px solid var(--line)}
.rl-drawer .offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line-soft)}
.rl-drawer .drawer-title{font-size:16px;font-weight:700}
.rl-drawer .offcanvas-body{padding:24px 22px}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{padding:14px 4px;font-size:18px;font-weight:600;color:var(--text-2);border-bottom:1px solid var(--line-soft)}
.drawer-nav a.active{color:var(--orange-dark)}
.drawer-footer{padding:16px 22px 24px;border-top:1px solid var(--line-soft)}
.btn-close{--bs-btn-close-focus-shadow:none;opacity:.6}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:20px 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb-list a{color:var(--text-2)}
.breadcrumb-list a:hover{color:var(--orange-dark)}
.breadcrumb-list span.sep{color:var(--line)}
.breadcrumb-list .current{color:var(--text-3)}

/* ---------- 首屏 ---------- */
.page-hero{padding:44px 0 72px;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,36,.08),rgba(255,90,36,0) 68%);pointer-events:none;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--orange-dark);
  background:var(--orange-soft);border-radius:var(--r-pill);padding:6px 14px;
}
.page-hero h1{
  font-size:clamp(32px,4.4vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.1;
  margin-bottom:20px;max-width:16em;
}
.page-hero .lead{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;padding-top:22px;border-top:1px solid var(--line)}
.hero-meta .meta-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2)}
.hero-meta .meta-item i{color:var(--green);font-size:13px}
.hero-figure{
  position:relative;margin:0;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  background:linear-gradient(to top,rgba(16,18,22,.72),rgba(16,18,22,0));
  color:#fff;font-size:13px;letter-spacing:.02em;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:1030;
  background:var(--bg);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
.anchor-scroll{display:flex;gap:30px;overflow-x:auto;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-link{position:relative;flex:0 0 auto;padding:16px 0;font-size:15px;color:var(--text-2);white-space:nowrap;transition:color .3s var(--ease)}
.anchor-link::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.anchor-link:hover{color:var(--text)}
.anchor-link.active{color:var(--text);font-weight:600}
.anchor-link.active::after{transform:scaleX(1)}

/* ---------- 通用板块 ---------- */
.sec{padding:104px 0}
.sec-tight{padding:80px 0}
.sec-head{margin-bottom:36px;max-width:44em}
.sec-head .kicker{display:block;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--orange-dark);margin-bottom:12px}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:14px}
.sec-head p{color:var(--text-2);font-size:16px}

/* ---------- 三步排查 ---------- */
.step-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.step-item{display:flex;gap:22px;padding:26px 28px;border-bottom:1px solid var(--line-soft);transition:background .3s var(--ease),transform .3s var(--ease)}
.step-item:last-child{border-bottom:0}
.step-item:hover{background:var(--bg-soft);transform:translateX(4px)}
.step-num{
  flex:0 0 52px;width:52px;height:52px;border-radius:12px;
  background:var(--green-soft);color:var(--green);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-item p{font-size:14.5px;color:var(--text-2)}
.step-visual{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-1);aspect-ratio:4/5;
}
.step-visual img{width:100%;height:100%;object-fit:cover}
.step-visual-cap{font-size:13px;color:var(--text-3);margin-top:12px}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:64px}
.faq-group:last-of-type{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.faq-group-head .ico{
  width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;font-size:15px;flex:0 0 40px;
}
.faq-group-head h2{font-size:clamp(21px,2.4vw,27px);font-weight:700}
.faq-group-head .count{margin-left:auto;font-size:13px;color:var(--text-3);letter-spacing:.04em}
.faq-shell{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:0 22px;box-shadow:var(--shadow-1)}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-soft)}
.accordion-item:last-child{border-bottom:0}
.accordion-header{position:relative}
.accordion-button{
  position:relative;
  background:transparent;color:var(--text);
  font-size:16.5px;font-weight:600;line-height:1.5;text-align:left;
  padding:22px 44px 22px 20px;border-radius:0;box-shadow:none;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:6px;height:26px;border-radius:3px;background:var(--orange);transform-origin:center;
  transition:transform .3s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--text);background:transparent;box-shadow:none}
.accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(1)}
.accordion-button::after{
  content:"+";background-image:none !important;width:auto;height:auto;
  font-size:20px;line-height:1;color:var(--text-3);
  display:flex;align-items:center;justify-content:center;
  transition:transform .3s var(--ease),color .3s var(--ease);
  transform:none;
}
.accordion-button:not(.collapsed)::after{content:"−";color:var(--orange);transform:rotate(90deg)}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button:focus-visible{outline:2px solid var(--orange);outline-offset:-2px}
.accordion-body{padding:0 44px 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- 联系与相关 ---------- */
.contact-card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 30px;height:100%;
}
.contact-card h3{font-size:22px;margin-bottom:14px}
.contact-card p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.contact-list{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.contact-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.contact-list i{color:var(--orange);font-size:13px;width:16px}
.rel-list{display:flex;flex-direction:column;gap:16px}
.rel-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.rel-item:hover{border-color:rgba(16,18,22,.2);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.rel-item .rel-tag{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--orange-dark);background:var(--orange-soft);border-radius:var(--r-pill);padding:4px 10px;display:inline-block;margin-bottom:12px}
.rel-item h3{font-size:17px;font-weight:600;margin-bottom:8px;line-height:1.5}
.rel-item p{font-size:14px;color:var(--text-2)}
.rel-item .rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13.5px;color:var(--text-3)}
.rel-item:hover .rel-more{color:var(--orange-dark)}
.rel-item .rel-more i{transition:transform .3s var(--ease)}
.rel-item:hover .rel-more i{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:var(--on-dark);padding:72px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{font-size:clamp(23px,2.8vw,32px);color:var(--on-dark);margin-bottom:10px}
.cta-band p{color:rgba(244,243,239,.72);font-size:15px;max-width:34em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark);padding:72px 0 0}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.10)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--orange)}
.footer-brand .brand-mark::after{background:var(--ink)}
.footer-desc{font-size:14px;color:rgba(244,243,239,.68);max-width:22em;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-btn);
  color:rgba(244,243,239,.8);font-size:14px;
  transition:border-color .3s var(--ease),color .3s var(--ease),background .3s var(--ease);
}
.footer-social a:hover{border-color:var(--orange);color:var(--orange);background:rgba(255,90,36,.08)}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;color:rgba(244,243,239,.55);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(244,243,239,.86);text-decoration:none}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:24px 0 32px;font-size:13px;color:rgba(244,243,239,.55);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-search{display:none}
  .main-nav{gap:22px}
  .sec{padding:88px 0}
  .sec-tight{padding:72px 0}
}
@media (max-width:991.98px){
  :root{--header-h:64px}
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-actions{margin-left:auto}
  .burger{display:inline-flex}
  .page-hero{padding:32px 0 56px}
  .page-hero h1{max-width:none}
  .hero-figure{aspect-ratio:16/10;margin-top:8px}
  .sec{padding:72px 0}
  .sec-tight{padding:60px 0}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:60px 0}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  body{font-size:15.5px}
  .page-hero h1{font-size:clamp(30px,7vw,38px)}
  .page-hero .lead{font-size:16px}
  .hero-actions .btn-rl{flex:1 1 auto}
  .hero-meta{gap:16px}
  .step-item{flex-direction:row;padding:22px 20px;gap:16px}
  .step-visual{aspect-ratio:16/10;margin-top:26px}
  .faq-shell{padding:0 14px}
  .accordion-button{font-size:15.5px;padding:18px 38px 18px 16px}
  .accordion-body{padding:0 20px 18px 16px}
  .contact-card{padding:26px 22px}
  .footer-top{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-rl{width:100%}
  .contact-card .btn-rl{width:100%}
  .anchor-scroll{gap:22px}
  .anchor-link{font-size:14px}
  .faq-group-head .count{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}