/* roulang page: index */
:root{
  --brand-1:#FF6A2B;
  --brand-2:#E8327A;
  --brand-3:#7B3FE4;
  --brand-grad:linear-gradient(135deg,#FF6A2B 0%,#E8327A 52%,#7B3FE4 100%);
  --brand-grad-soft:linear-gradient(135deg,rgba(255,106,43,.16) 0%,rgba(232,50,122,.14) 52%,rgba(123,63,228,.16) 100%);
  --accent:#22D3B8;
  --bg:#0F0A16;
  --surface:#181022;
  --card:#211730;
  --card-hover:#2A1E3C;
  --line:rgba(255,255,255,.08);
  --line-brand:rgba(255,106,43,.35);
  --text:#F6F1FA;
  --text-2:#B9AECB;
  --text-3:#8B7FA0;
  --paper:#FBFAFC;
  --paper-text:#1D1526;
  --paper-2:#5B5268;
  --paper-line:#E8E4EF;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F43F5E;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;
  --pill:999px;
  --sh1:0 2px 10px rgba(0,0,0,.28);
  --sh2:0 14px 36px rgba(0,0,0,.38);
  --sh3:0 30px 70px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.06);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;
  --bs-body-bg:#0F0A16;
  --bs-body-color:#F6F1FA;
  --bs-primary:#FF6A2B;
  --bs-primary-rgb:255,106,43;
  --bs-link-color:#22D3B8;
  --bs-link-hover-color:#FF6A2B;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:16px;
  --bs-border-radius-lg:20px;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-focus-ring-color:rgba(255,106,43,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  scroll-padding-top:calc(var(--nav-h) + 16px);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--accent);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:var(--brand-1)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(255,106,43,.35);color:#fff}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1600px){.container-x{max-width:1320px}}
@media (max-width:767px){.container-x{padding:0 16px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(15,10,22,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-top{height:64px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:40px;height:40px;border-radius:13px;background:var(--brand-grad);display:grid;place-items:center;font-weight:900;font-size:15px;color:#fff;letter-spacing:-.02em;box-shadow:0 8px 22px rgba(232,50,122,.28)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.01em;white-space:nowrap}
.nav-search{flex:1 1 auto;max-width:420px;min-width:180px;position:relative}
.nav-search input{width:100%;height:44px;border-radius:var(--pill);background:var(--surface);border:1px solid var(--line);padding:0 52px 0 18px;color:var(--text);font-size:14px;transition:border-color var(--t),box-shadow var(--t)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:transparent;box-shadow:0 0 0 2px rgba(255,106,43,.55),0 0 0 5px rgba(123,63,228,.18)}
.nav-search button{position:absolute;right:5px;top:5px;width:34px;height:34px;border-radius:50%;border:0;background:var(--brand-grad);display:grid;place-items:center;cursor:pointer;transition:transform var(--t),filter var(--t)}
.nav-search button:hover{filter:brightness(1.08)}
.nav-search button:active{transform:scale(.94)}
.nav-search svg{width:16px;height:16px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.btn-brand{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:12px;border:0;background:var(--brand-grad);color:#fff;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 10px 26px rgba(232,50,122,.26);transition:transform var(--t),filter var(--t),box-shadow var(--t)}
.btn-brand:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 32px rgba(232,50,122,.34)}
.btn-brand:active{transform:scale(.98)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:12px;background:transparent;border:1px solid var(--line);color:var(--text-2);font-weight:600;font-size:15px;cursor:pointer;transition:border-color var(--t),color var(--t),transform var(--t)}
.btn-ghost:hover{border-color:var(--line-brand);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:transparent;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.nav-channels{height:52px;display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-channels::-webkit-scrollbar{display:none}
.channel-tab{flex:0 0 auto;display:inline-flex;align-items:center;min-height:36px;padding:0 18px;border-radius:var(--pill);border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;transition:all var(--t)}
.channel-tab:hover{color:#fff;border-color:var(--line-brand)}
.channel-tab.active{background:var(--brand-grad);border-color:transparent;color:#fff;box-shadow:0 8px 20px rgba(232,50,122,.28)}
.nav-mobile{display:none;border-top:1px solid var(--line);padding:12px 0 18px}
.nav-mobile.is-open{display:block}
.nav-mobile a{display:block;padding:12px 4px;color:var(--text-2);font-size:15px;border-bottom:1px solid var(--line)}
.nav-mobile a:last-child{border-bottom:0}
.nav-mobile a:hover{color:var(--brand-1)}

/* ============ Hero ============ */
.hero{position:relative;min-height:clamp(520px,76vh,720px);display:flex;align-items:center;overflow:hidden;background-color:#150E1F;background-image:linear-gradient(90deg,rgba(15,10,22,.94) 0%,rgba(15,10,22,.6) 45%,rgba(15,10,22,.15) 100%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(180deg,rgba(15,10,22,0),var(--bg));pointer-events:none}
.hero-inner{position:relative;z-index:2;max-width:620px;padding:96px 0 128px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;min-height:32px;padding:0 14px;border-radius:var(--pill);background:rgba(255,255,255,.06);border:1px solid var(--line);font-size:12.5px;color:var(--text-2);letter-spacing:.02em}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(34,211,184,.16);display:inline-block}
.hero h1{margin:20px 0 16px;font-size:clamp(30px,4.2vw,54px);font-weight:900;line-height:1.15;letter-spacing:-.01em}
.hero h1 .grad{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;line-height:1.7;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-thumbs{position:absolute;right:32px;bottom:96px;z-index:2;display:flex;flex-direction:column;gap:12px}
.hero-thumbs img{width:96px;height:132px;object-fit:cover;border-radius:14px;border:1px solid rgba(255,255,255,.12);box-shadow:var(--sh2);opacity:.9;transition:opacity 600ms ease,transform var(--t)}
.hero-thumbs img:hover{opacity:1;transform:translateY(-4px)}

/* ============ 数据徽章 ============ */
.stats-strip{margin-top:-56px;position:relative;z-index:3}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh2)}
.stat-cell{background:var(--surface);padding:24px 22px}
.stat-num{font-size:28px;font-weight:800;line-height:1.2;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stat-label{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--text-3);margin-top:4px}
.stat-label i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section.alt{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-title{font-size:clamp(22px,2.4vw,32px);font-weight:800;letter-spacing:-.01em;line-height:1.25}
.section-desc{margin-top:10px;font-size:15px;color:var(--text-2);max-width:720px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--text-2);white-space:nowrap}
.link-more svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--t)}
.link-more:hover{color:var(--brand-1)}
.link-more:hover svg{transform:translateX(8px)}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.pill{display:inline-flex;align-items:center;min-height:34px;padding:0 16px;border-radius:var(--pill);border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:13.5px;font-weight:600;cursor:pointer;transition:all var(--t)}
.pill:hover{color:#fff;border-color:var(--line-brand)}
.pill.active{background:var(--brand-grad);border-color:transparent;color:#fff}

/* ============ 横滑片库 ============ */
.rank-scroller{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;scrollbar-width:none;-ms-overflow-style:none}
.rank-scroller::-webkit-scrollbar{display:none}
.rank-card{flex:0 0 272px;scroll-snap-align:start;position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.rank-card:hover{transform:translateY(-6px);box-shadow:var(--sh3);border-color:var(--line-brand)}
.rank-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-grad-soft)}
.rank-cover img{width:100%;height:100%;object-fit:cover;transition:transform 600ms ease}
.rank-card:hover .rank-cover img{transform:scale(1.06)}
.rank-no{position:absolute;top:10px;left:12px;font-size:26px;font-weight:900;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.6);font-variant-numeric:tabular-nums}
.rank-body{padding:16px 18px 20px}
.rank-body h3{font-size:16px;font-weight:700;line-height:1.4}
.rank-body p{margin-top:6px;font-size:13px;color:var(--text-3);line-height:1.6}

/* ============ 编辑推荐 1 大 2 小 ============ */
.editor-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.feature-card{position:relative;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh2);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--sh3);border-color:var(--line-brand)}
.feature-card .fc-img{aspect-ratio:16/9;overflow:hidden}
.feature-card .fc-img img{width:100%;height:100%;object-fit:cover;transition:transform 600ms ease}
.feature-card:hover .fc-img img{transform:scale(1.06)}
.feature-card .fc-body{padding:26px 28px 30px}
.feature-card h3{font-size:20px;font-weight:800;line-height:1.35}
.feature-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;max-width:560px}
.editor-side{display:grid;gap:24px}
.mini-card{position:relative;display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px;box-shadow:var(--sh1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--sh3)}
.mini-card img{width:104px;height:104px;object-fit:cover;border-radius:var(--r-md);flex:0 0 auto}
.mini-card h3{font-size:16px;font-weight:700;line-height:1.4}
.mini-card p{margin-top:8px;font-size:13.5px;color:var(--text-3);line-height:1.65}

/* ============ 最新信息列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--sh3);border-color:var(--line-brand)}
.post-card.is-wide{grid-column:span 2;flex-direction:row}
.post-card.is-wide .post-cover{width:42%;flex:0 0 42%}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-grad-soft)}
.post-card.is-wide .post-cover{aspect-ratio:auto}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 600ms ease}
.post-card:hover .post-cover img{transform:scale(1.06)}
.post-cat{position:absolute;top:12px;left:12px;display:inline-flex;align-items:center;min-height:26px;padding:0 12px;border-radius:var(--pill);background:rgba(15,10,22,.72);border:1px solid var(--line-brand);color:#fff;font-size:12px;font-weight:600;backdrop-filter:blur(6px)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.post-body h3{font-size:17px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a{color:var(--text)}
.post-body h3 a:hover{color:var(--brand-1)}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.post-meta span.dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:inline-block}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:240px;gap:14px;text-align:center;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-lg);padding:40px 24px}
.empty-state .es-icon{width:52px;height:52px;border-radius:16px;background:var(--brand-grad-soft);border:1px solid var(--line);display:grid;place-items:center;font-size:22px;color:var(--brand-1)}
.empty-state p{color:var(--text-2);font-size:15px}
.load-more{margin-top:36px;display:flex;justify-content:center}

/* ============ 内容分区 ============ */
.stagger-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.stagger-grid > *:nth-child(2){margin-top:48px}
.stagger-grid > *:nth-child(4){margin-top:48px}
.block-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.block-card:hover{transform:translateY(-6px);border-color:var(--line-brand);box-shadow:var(--sh3)}
.block-card img{aspect-ratio:16/9;width:100%;object-fit:cover}
.block-card .bc-body{padding:22px 24px 26px}
.block-card h3{font-size:18px;font-weight:700}
.block-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.split-block{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-block .sb-list{margin-top:24px;display:grid;gap:14px}
.split-block .sb-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.split-block .sb-list li b{display:grid;place-items:center;flex:0 0 24px;width:24px;height:24px;border-radius:8px;background:var(--brand-grad-soft);border:1px solid var(--line);color:var(--accent);font-size:12px}
.sb-media{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh2)}
.sb-media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ============ CTA 带 ============ */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--brand-grad);padding:48px 52px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;box-shadow:0 30px 70px rgba(232,50,122,.28)}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px);background-size:14px 14px;opacity:.35;pointer-events:none}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:900;color:#fff;line-height:1.3}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.88);font-size:15px;line-height:1.75}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{flex:1 1 220px;height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.4);background:rgba(15,10,22,.28);color:#fff;padding:0 18px;font-size:15px}
.cta-form input::placeholder{color:rgba(255,255,255,.7)}
.cta-form input:focus{outline:none;box-shadow:0 0 0 3px rgba(255,255,255,.35)}
.cta-form button{min-height:48px;padding:0 26px;border-radius:12px;border:0;background:#160E22;color:#fff;font-weight:700;font-size:15px;cursor:pointer;transition:transform var(--t),filter var(--t)}
.cta-form button:hover{filter:brightness(1.12);transform:translateY(-1px)}
.cta-form button:active{transform:scale(.98)}
.cta-hint{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.8)}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden}
.accordion-button{background:transparent;color:var(--text);font-size:16px;font-weight:600;padding:18px 22px;box-shadow:none;border:0;width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;transition:background var(--t)}
.accordion-button:not(.collapsed){color:#fff;background:var(--brand-grad-soft)}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button::after{content:"";flex:0 0 12px;width:12px;height:12px;border-right:2px solid var(--brand-1);border-bottom:2px solid var(--brand-1);transform:rotate(45deg);background:transparent;transition:transform var(--t);margin:0}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--accent)}
.accordion-body{padding:6px 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--surface);padding-top:64px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--brand-grad);opacity:.6}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:38px;height:38px;font-size:14px}
.footer-brand strong{font-size:17px;font-weight:800}
.footer-brand span{display:block;font-size:11.5px;color:var(--text-3);font-weight:400}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--t),transform var(--t)}
.footer-links a:hover{color:var(--brand-1);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:10px;line-height:1.7}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--text-3)}
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;border:0;background:var(--brand-grad);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 14px 34px rgba(232,50,122,.4);opacity:0;visibility:hidden;transform:translateY(12px);transition:all var(--t);z-index:1050}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .editor-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  :root{--nav-h:104px}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .nav-search{max-width:none}
  .section{padding:72px 0}
  .post-card.is-wide{grid-column:span 1;flex-direction:column}
  .post-card.is-wide .post-cover{width:100%;flex:auto;aspect-ratio:16/9}
  .stagger-grid{grid-template-columns:1fr}
  .stagger-grid > *:nth-child(2),.stagger-grid > *:nth-child(4){margin-top:0}
  .split-block{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-thumbs{display:none}
  .hero-inner{padding:80px 0 112px}
}
@media (max-width:767px){
  .post-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stats-strip{margin-top:-40px}
  .section{padding:56px 0}
  .hero{background-image:linear-gradient(180deg,rgba(15,10,22,.94) 0%,rgba(15,10,22,.72) 55%,rgba(15,10,22,.4) 100%),url('/assets/images/backpic/back-1.png')}
  .hero-inner{padding:64px 0 96px}
  .hero-actions{width:100%}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{flex:1 1 auto}
  .section-head{flex-direction:column;align-items:flex-start}
  .cta-band{padding:32px 22px;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .brand-sub{display:none}
}
@media (max-width:575px){
  .post-grid{grid-template-columns:1fr}
  .mini-card{flex-direction:column}
  .mini-card img{width:100%;height:160px}
  .rank-card{flex:0 0 236px}
  .to-top{right:14px;bottom:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .rank-card:hover,.post-card:hover,.feature-card:hover,.mini-card:hover,.block-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand-1:#FF6A2B;--brand-2:#E8327A;--brand-3:#7B3FE4;
  --grad:linear-gradient(135deg,#FF6A2B 0%,#E8327A 52%,#7B3FE4 100%);
  --accent:#22D3B8;
  --bg:#0F0A16;--bg-2:#181022;--bg-3:#211730;--bg-4:#2A1E3C;
  --line:rgba(255,255,255,.08);--line-2:rgba(255,106,43,.35);
  --tx:#F6F1FA;--tx-2:#B9AECB;--tx-3:#8B7FA0;
  --paper:#FBFAFC;--paper-tx:#1D1526;--paper-2:#5B5268;--paper-line:#E8E4EF;
  --ok:#34D399;--warn:#FBBF24;--err:#F43F5E;
  --r-sm:10px;--r-md:16px;--r-lg:20px;--r-xl:28px;--pill:999px;
  --sh1:0 2px 10px rgba(0,0,0,.28);
  --sh2:0 14px 36px rgba(0,0,0,.38);
  --sh3:0 30px 70px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;
  --bs-body-bg:var(--bg);--bs-body-color:var(--tx);
  --bs-primary:var(--brand-2);--bs-primary-rgb:232,50,122;
  --bs-link-color:var(--accent);--bs-link-hover-color:#fff;
  --bs-border-color:var(--line);--bs-border-radius:.75rem;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-focus-ring-color:rgba(255,106,43,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:calc(var(--nav-h) + 16px);scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--tx);
  font-family:var(--bs-font-sans-serif);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.2;font-weight:800}
p{margin:0}
::selection{background:rgba(232,50,122,.35);color:#fff}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container-x{padding:0 24px}}
@media(min-width:1200px){.container-x{padding:0 32px;max-width:1240px}}
@media(min-width:1600px){.container-x{max-width:1320px}}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:12px;border:0;
  background:var(--grad);color:#fff;font-size:15px;font-weight:700;
  cursor:pointer;transition:filter 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
  box-shadow:0 8px 22px rgba(232,50,122,.28);
}
.btn-main:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff}
.btn-main:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:12px;
  background:transparent;border:1px solid var(--line);color:var(--tx-2);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:border-color 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease);
}
.btn-ghost:hover{border-color:var(--line-2);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--tx-2);font-size:14px;font-weight:600}
.link-arrow i{transition:transform 200ms var(--ease)}
.link-arrow:hover{color:var(--brand-1)}
.link-arrow:hover i{transform:translateX(8px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(15,10,22,.94);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-top{height:64px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:13px;letter-spacing:.5px;
  box-shadow:0 6px 18px rgba(123,63,228,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;font-weight:800;color:var(--tx)}
.brand-text em{font-style:normal;font-size:11px;color:var(--tx-3);white-space:nowrap}
.nav-search{position:relative;flex:1 1 auto;max-width:420px;display:none}
@media(min-width:992px){.nav-search{display:flex}}
.search-input{
  width:100%;height:44px;border-radius:var(--pill);
  background:var(--bg-3);border:1px solid var(--line);color:var(--tx);
  padding:0 52px 0 20px;font-size:14px;outline:none;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-input::placeholder{color:var(--tx-3)}
.search-input:focus{border-color:rgba(255,106,43,.6);box-shadow:0 0 0 3px rgba(255,106,43,.22)}
.search-btn{
  position:absolute;right:6px;top:6px;width:32px;height:32px;border-radius:50%;
  border:0;background:var(--grad);color:#fff;cursor:pointer;display:grid;place-items:center;font-size:13px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-actions .btn-ghost{display:none}
@media(min-width:992px){.nav-actions .btn-ghost{display:inline-flex}}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-3);color:var(--tx);font-size:16px;cursor:pointer;display:grid;place-items:center;
}
@media(min-width:992px){.menu-toggle{display:none}}
.nav-bottom{border-top:1px solid var(--line)}
.nav-channels{
  display:flex;align-items:center;gap:10px;height:52px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
}
.nav-channels::-webkit-scrollbar{display:none}
.channel-tab{
  flex:0 0 auto;display:inline-flex;align-items:center;min-height:40px;
  padding:0 16px;border-radius:var(--pill);font-size:14px;font-weight:600;
  color:var(--tx-2);border:1px solid var(--line);background:transparent;
  transition:all 200ms var(--ease);white-space:nowrap;
}
.channel-tab:hover{color:#fff;border-color:var(--line-2)}
.channel-tab.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(232,50,122,.3)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--bg-2);padding:12px 16px 18px}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:12px 4px;color:var(--tx-2);border-bottom:1px solid var(--line);font-size:15px}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a:hover{color:var(--brand-1)}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);padding:26px 0 10px}
.crumb a:hover{color:var(--brand-1)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .now{color:var(--tx-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-head{max-width:900px;padding:8px 0 4px}
.pill-cat{
  display:inline-flex;align-items:center;gap:8px;min-height:30px;padding:0 14px;border-radius:var(--pill);
  background:rgba(255,106,43,.12);border:1px solid var(--line-2);color:#FFB68C;font-size:12.5px;font-weight:700;
}
.article-title{
  font-size:clamp(30px,4.2vw,54px);font-weight:900;line-height:1.15;margin:18px 0 18px;
}
.article-lead{
  background:var(--bg-3);border:1px solid var(--line);border-left:3px solid var(--brand-2);
  border-radius:var(--r-md);padding:16px 20px;color:var(--tx-2);font-size:17px;line-height:1.7;max-width:780px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:12.5px;color:var(--tx-3);padding:18px 0 0}
.article-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;margin-right:6px;vertical-align:middle}
.article-meta time{font-variant-numeric:tabular-nums}
.article-cover{
  margin:28px 0 36px;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:var(--grad);position:relative;box-shadow:var(--sh2);
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.article-cover:hover img{transform:scale(1.06)}
.cover-cap{font-size:13px;color:var(--tx-3);text-align:center;margin:-24px 0 32px}

/* ---------- 正文纸面 ---------- */
.paper{
  max-width:780px;margin:0 auto;background:var(--paper);color:var(--paper-tx);
  border-radius:var(--r-xl);padding:48px 56px;box-shadow:var(--sh2);
}
.article-body{font-size:16px;line-height:1.9;color:var(--paper-tx);word-break:break-word}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  font-size:clamp(22px,2.4vw,32px);font-weight:800;color:#1D1526;
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:var(--grad)}
.article-body h3{font-size:19px;font-weight:700;color:#1D1526;margin:28px 0 12px}
.article-body img{border-radius:16px;margin:24px auto;max-width:100%;height:auto}
.article-body a{color:var(--brand-2);border-bottom:1px solid rgba(232,50,122,.28)}
.article-body a:hover{border-bottom-color:var(--brand-2)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.1em;line-height:1.85}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;background:#F2EEF8;border-left:4px solid var(--brand-2);
  border-radius:0 12px 12px 0;color:#3A3145;
}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;border-radius:12px;overflow:hidden}
.article-body th{background:#EFEAF7;color:#2A2136;font-weight:700;text-align:left;padding:12px 14px}
.article-body td{padding:12px 14px;border-top:1px solid var(--paper-line);color:var(--paper-2)}
.article-body tr:nth-child(even) td{background:#F7F5FB}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--paper-2);text-align:center;margin-top:10px}
.article-body code{background:#F0ECF6;border-radius:6px;padding:2px 6px;font-size:.92em;color:#7B3FE4}

/* ---------- 标签 / 分享 ---------- */
.tag-row{max-width:780px;margin:26px auto 0;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag{
  display:inline-flex;align-items:center;min-height:34px;padding:0 14px;border-radius:var(--pill);
  background:var(--bg-3);border:1px solid var(--line);color:var(--tx-2);font-size:13px;
  transition:all 200ms var(--ease);
}
.tag:hover{color:#fff;border-color:var(--line-2)}
.share-inline{margin-left:auto;display:flex;gap:8px}
.share-inline button{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--bg-3);
  color:var(--tx-2);cursor:pointer;display:grid;place-items:center;transition:all 200ms var(--ease);
}
.share-inline button:hover{color:#fff;border-color:var(--line-2);transform:translateY(-2px)}

/* ---------- 上下篇 ---------- */
.adj-grid{max-width:780px;margin:36px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.adj-card{
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px 20px;transition:all 200ms var(--ease);box-shadow:var(--sh1);
}
.adj-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--sh3)}
.adj-label{font-size:12.5px;color:var(--tx-3);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.adj-title{font-size:16px;font-weight:700;color:var(--tx)}
.adj-card.next{text-align:right}
.adj-card.next .adj-label{justify-content:flex-end}

/* ---------- 板块标题 ---------- */
.section{padding:72px 0}
@media(min-width:992px){.section{padding:88px 0}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:800}
.sec-sub{color:var(--tx-3);font-size:14px;margin-top:8px}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);border:0;margin:0}

/* ---------- 相关推荐横条卡 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.mini-card{
  display:flex;gap:14px;background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:12px;transition:all 200ms var(--ease);box-shadow:var(--sh1);overflow:hidden;
}
.mini-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--sh3)}
.mini-thumb{flex:0 0 104px;aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--grad)}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.mini-card:hover .mini-thumb img{transform:scale(1.06)}
.mini-body{min-width:0}
.mini-cat{font-size:12px;color:var(--accent);font-weight:700;margin-bottom:4px}
.mini-title{font-size:15px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-desc{font-size:13px;color:var(--tx-3);line-height:1.6;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);padding:44px;background:var(--grad);box-shadow:var(--sh2)}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);background-size:14px 14px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr 1fr;gap:32px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.4vw,32px);color:#fff;font-weight:900}
.cta-inner p{color:rgba(255,255,255,.86);font-size:15px;margin-top:10px;max-width:44ch}
.cta-form{display:flex;gap:10px;background:rgba(15,10,22,.28);border:1px solid rgba(255,255,255,.24);border-radius:var(--r-md);padding:10px}
.cta-form input{
  flex:1;min-width:0;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:rgba(15,10,22,.35);color:#fff;padding:0 14px;font-size:14px;outline:none;
}
.cta-form input::placeholder{color:rgba(255,255,255,.62)}
.cta-form input:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.25)}
.cta-form button{
  min-height:44px;padding:0 20px;border-radius:10px;border:0;background:#0F0A16;color:#fff;
  font-weight:700;font-size:14px;cursor:pointer;transition:all 200ms var(--ease);white-space:nowrap;
}
.cta-form button:hover{filter:brightness(1.15);transform:translateY(-1px)}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;background:var(--bg-3);border:1px dashed var(--line);border-radius:var(--r-lg);padding:32px;
}
.empty-state i{font-size:30px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.empty-state p{color:var(--tx-2);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:24px;background:var(--bg-2);border-top:1px solid var(--line);position:relative}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{font-size:15px;color:var(--tx);display:flex;flex-direction:column;line-height:1.3}
.footer-brand strong span{font-size:11.5px;color:var(--tx-3);font-weight:400;margin-top:2px}
.footer-about{color:var(--tx-3);font-size:14px;line-height:1.85;max-width:38ch}
.footer-title{font-size:14px;font-weight:800;color:var(--tx);margin-bottom:16px}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--tx-3);font-size:14px;display:inline-block;transition:all 200ms var(--ease)}
.footer-links a:hover{color:var(--brand-1);transform:translateX(2px)}
.footer-contact li{color:var(--tx-3);font-size:13.5px;line-height:1.75}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding:18px 0 26px;border-top:1px solid var(--line);color:var(--tx-3);font-size:13px;
}
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;border:0;
  background:var(--grad);color:#fff;font-size:16px;cursor:pointer;display:grid;place-items:center;
  box-shadow:var(--sh2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all 240ms var(--ease);z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
  .paper{padding:36px 28px}
  .cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .article-title{font-size:clamp(28px,6vw,40px)}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .adj-grid{grid-template-columns:1fr}
  .adj-card.next{text-align:left}
  .adj-card.next .adj-label{justify-content:flex-start}
  .rel-grid{grid-template-columns:1fr}
  .article-lead{font-size:16px}
  .cta-band{padding:28px}
  .cta-form{flex-direction:column;background:transparent;border:0;padding:0}
}
@media(max-width:575px){
  .paper{padding:24px 18px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .brand-text em{display:none}
  .article-meta{gap:6px 14px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .mini-card:hover,.adj-card:hover,.btn-main:hover,.to-top{transform:none!important}
}

/* roulang page: category1 */
:root{
  --brand-1:#FF6A2B;
  --brand-2:#E8327A;
  --brand-3:#7B3FE4;
  --brand-grad:linear-gradient(135deg,#FF6A2B 0%,#E8327A 52%,#7B3FE4 100%);
  --accent:#22D3B8;
  --bg:#0F0A16;
  --surface:#181022;
  --card:#211730;
  --elev:#2A1E3C;
  --line:rgba(255,255,255,.08);
  --line-brand:rgba(255,106,43,.35);
  --text:#F6F1FA;
  --text-2:#B9AECB;
  --text-3:#8B7FA0;
  --paper:#FBFAFC;
  --paper-text:#1D1526;
  --paper-2:#5B5268;
  --paper-line:#E8E4EF;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F43F5E;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;
  --sh-1:0 2px 10px rgba(0,0,0,.28);
  --sh-2:0 14px 36px rgba(0,0,0,.38);
  --sh-3:0 30px 70px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;

  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-primary:#FF6A2B;
  --bs-primary-rgb:255,106,43;
  --bs-link-color:#FF8A55;
  --bs-link-hover-color:#22D3B8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:16px;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-focus-ring-color:rgba(255,106,43,.35);
  --bs-emphasis-color:var(--text);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px);-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
button,input{font-family:inherit}
h1,h2,h3,h4{letter-spacing:-.01em;font-variant-numeric:tabular-nums}
p{margin:0 0 18px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-2);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;z-index:2000}
.skip-link:focus{left:0}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1600px){.container-x{max-width:1320px}}
@media (max-width:991px){.container-x{padding:0 20px}}
@media (max-width:575px){.container-x{padding:0 16px}}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-paper{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:12px;
  font-size:14.5px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform 200ms var(--ease),filter 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
}
.btn-brand{background:var(--brand-grad);color:#fff;box-shadow:0 10px 26px rgba(232,50,122,.28)}
.btn-brand:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff}
.btn-brand:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--line-brand);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.btn-paper{background:var(--card);border-color:var(--line);color:var(--text)}
.btn-paper:hover{border-color:var(--line-brand);color:#fff;transform:translateY(-1px)}
.btn-link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--accent)}
.btn-link-arrow i{transition:transform 200ms var(--ease)}
.btn-link-arrow:hover i{transform:translateX(8px)}
.btn-brand:disabled,.btn-ghost:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(15,10,22,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand-grad);
  display:grid;place-items:center;color:#fff;font-size:13px;font-weight:900;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(232,50,122,.35);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;font-weight:800}
.brand-text small{font-size:11px;color:var(--text-3);white-space:nowrap}
@media (max-width:575px){.brand-text small{display:none}}

.nav-search{
  position:relative;display:flex;align-items:center;gap:6px;
  height:44px;flex:1 1 300px;max-width:420px;
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  padding:0 4px 0 16px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search:focus-within{border-color:var(--line-brand);box-shadow:0 0 0 3px rgba(255,106,43,.2)}
.nav-search input{flex:1;min-width:0;height:100%;background:none;border:0;outline:none;color:var(--text);font-size:14px}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  width:36px;height:36px;flex-shrink:0;border:0;border-radius:999px;
  background:var(--brand-grad);color:#fff;display:grid;place-items:center;font-size:13px;
  transition:filter 200ms var(--ease);
}
.nav-search button:hover{filter:brightness(1.08)}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--card);color:var(--text);display:grid;place-items:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--line-brand)}
@media (max-width:991px){.nav-search{display:none}}

.mobile-menu{background:var(--surface);border-top:1px solid var(--line)}
.mobile-menu-inner{display:flex;flex-direction:column;gap:4px;padding:12px 0 18px}
.mobile-menu-inner a{padding:12px;border-radius:12px;font-size:15px;color:var(--text-2)}
.mobile-menu-inner a:hover{background:var(--elev);color:#fff}
.mobile-menu-inner .btn-brand{margin-top:8px;color:#fff}

.nav-channels-row{border-top:1px solid var(--line);background:rgba(24,16,34,.62)}
.nav-channels-scroll{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav-channels-scroll::-webkit-scrollbar{display:none}
.nav-channels{display:flex;align-items:center;gap:10px;height:52px;min-width:max-content}
.channel-tab{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:transparent;
  color:var(--text-2);font-size:14px;white-space:nowrap;
  transition:all 200ms var(--ease);
}
.channel-tab:hover{color:#fff;border-color:var(--line-brand);transform:translateY(-1px)}
.channel-tab.active{background:var(--brand-grad);border-color:transparent;color:#fff;font-weight:700;box-shadow:0 6px 18px rgba(232,50,122,.3)}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav{padding:22px 0 6px}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--text-3)}
.crumb-list a{color:var(--text-3)}
.crumb-list a:hover{color:var(--brand-1)}
.crumb-sep{color:rgba(255,255,255,.2)}
.crumb-list [aria-current="page"]{color:var(--text-2)}

/* ---------- 横幅 ---------- */
.page-hero{padding:6px 0 0}
.page-hero-inner{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:clamp(34px,4.6vw,60px) clamp(22px,4vw,56px);
  min-height:clamp(240px,32vh,340px);
  display:flex;flex-direction:column;justify-content:center;
  border:1px solid var(--line);
  background-color:#1a1024;
  background-image:linear-gradient(100deg,rgba(15,10,22,.96) 0%,rgba(15,10,22,.74) 46%,rgba(123,63,228,.3) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:700;
  color:#fff;background:rgba(255,106,43,.18);border:1px solid var(--line-brand);margin-bottom:16px;
}
.hero-tag i{color:var(--accent);font-size:10px}
.page-hero h1{
  font-size:clamp(28px,3.8vw,46px);font-weight:900;line-height:1.16;
  margin:0 0 14px;max-width:760px;
}
.page-hero .hero-sub{font-size:17px;line-height:1.7;color:var(--text-2);max-width:620px;margin:0}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-pills span{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);background:rgba(33,23,48,.75);border:1px solid var(--line);
}
.hero-pills i{color:var(--accent);font-size:10px}

/* ---------- 区块 ---------- */
.section{padding:72px 0}
.section-tight{padding:56px 0 72px}
@media (max-width:991px){.section{padding:56px 0}.section-tight{padding:44px 0 56px}}
@media (max-width:575px){.section{padding:44px 0}.section-tight{padding:36px 0 44px}}

.lede{max-width:820px;font-size:17px;line-height:1.8;color:var(--text-2);margin:28px 0 0}

.sec-head{margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:800;line-height:1.3;margin:0 0 10px}
.sec-desc{color:var(--text-2);font-size:15.5px;margin:0;max-width:780px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-head-row .sec-head{margin-bottom:0}

.prose p{color:var(--text-2);font-size:16px;line-height:1.85;margin:0 0 18px;max-width:780px}
.prose p:last-child{margin-bottom:0}

/* ---------- 两栏布局 ---------- */
.layout-2col{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
@media (max-width:991px){.layout-2col{grid-template-columns:1fr;gap:32px}}

.anchor-side{position:sticky;top:calc(var(--nav-h) + 20px)}
.anchor-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;box-shadow:var(--sh-1)}
.anchor-title{font-size:12px;font-weight:800;color:var(--text-3);letter-spacing:.1em;margin-bottom:12px}
.anchor-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.anchor-list a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all 200ms var(--ease);
}
.anchor-list a:hover{background:var(--elev);color:#fff}
.anchor-list a.active{background:var(--elev);color:#fff;border-left-color:var(--brand-1)}
@media (max-width:991px){
  .anchor-side{position:static;top:auto}
  .anchor-card{padding:14px}
  .anchor-list{flex-direction:row;overflow-x:auto;gap:8px;scrollbar-width:none}
  .anchor-list::-webkit-scrollbar{display:none}
  .anchor-list li{flex-shrink:0}
  .anchor-list a{white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:999px;padding:9px 16px}
  .anchor-list a.active{background:var(--brand-grad);border-color:transparent;color:#fff}
}

.content-block + .content-block{margin-top:64px}
@media (max-width:575px){.content-block + .content-block{margin-top:48px}}

/* ---------- 要点列表 ---------- */
.point-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;list-style:none;margin:26px 0 0;padding:0}
@media (max-width:767px){.point-list{grid-template-columns:1fr}}
.point-list li{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:18px;transition:all 200ms var(--ease)}
.point-list li:hover{border-color:var(--line-brand);transform:translateY(-3px)}
.point-icon{
  width:36px;height:36px;flex-shrink:0;border-radius:11px;
  background:rgba(34,211,184,.12);color:var(--accent);
  display:grid;place-items:center;font-size:14px;
}
.point-list strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.point-list span{display:block;font-size:13.5px;line-height:1.7;color:var(--text-2)}

/* ---------- 内容卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:991px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.card-grid{grid-template-columns:1fr}}
.entry-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.entry-card:hover{transform:translateY(-6px);border-color:var(--line-brand);box-shadow:var(--sh-3)}
.entry-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--elev)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.entry-card:hover .entry-thumb img{transform:scale(1.06)}
.entry-tag{
  position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:#fff;background:rgba(15,10,22,.72);
  border:1px solid var(--line-brand);backdrop-filter:blur(6px);
}
.entry-body{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.entry-body h3{
  margin:0;font-size:17px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-body p{
  margin:0;font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--text-3);margin-top:auto;padding-top:10px;border-top:1px solid var(--line)}
.entry-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);align-self:center}

/* ---------- 对比表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);box-shadow:var(--sh-1)}
table.cmp{width:100%;min-width:660px;border-collapse:collapse;font-size:14.5px}
.cmp thead th{
  background:var(--elev);color:var(--text);text-align:left;
  padding:15px 20px;font-size:13.5px;font-weight:800;letter-spacing:.02em;white-space:nowrap;
}
.cmp tbody td{padding:15px 20px;color:var(--text-2);border-top:1px solid var(--line);vertical-align:top}
.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.cmp tbody tr:hover{background:rgba(255,106,43,.07)}
.cmp td strong{color:var(--text);font-weight:700}
.table-note{margin-top:12px;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md) !important;margin-bottom:12px;overflow:hidden;
}
.faq-accordion .accordion-item:last-child{margin-bottom:0}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-radius:var(--r-md) !important;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){background:rgba(255,106,43,.08);color:#fff}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;width:26px;height:26px;flex-shrink:0;
  display:grid;place-items:center;font-size:19px;font-weight:700;color:var(--brand-1);
  transition:transform 200ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-accordion .accordion-body{color:var(--text-2);font-size:15px;line-height:1.85;padding:0 20px 20px}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-brand)}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (max-width:767px){.rel-grid{grid-template-columns:1fr}}
.rel-card{
  display:flex;align-items:center;gap:18px;padding:20px;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(140deg,var(--card) 0%,var(--elev) 100%);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--sh-2)}
.rel-card img{width:100px;height:76px;border-radius:12px;object-fit:cover;flex-shrink:0}
.rel-card h3{margin:0 0 6px;font-size:17px;font-weight:700}
.rel-card p{margin:0;font-size:13.5px;line-height:1.7;color:var(--text-2)}
.rel-card .rel-arrow{margin-left:auto;color:var(--brand-1);font-size:15px;flex-shrink:0;transition:transform 200ms var(--ease)}
.rel-card:hover .rel-arrow{transform:translateX(6px)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:clamp(30px,4vw,54px);
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px),var(--brand-grad);
  background-size:12px 12px,100% 100%;
  display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;
  box-shadow:var(--sh-3);
}
@media (max-width:991px){.cta-band{grid-template-columns:1fr;gap:24px}}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,32px);font-weight:800;margin:0 0 12px;line-height:1.3}
.cta-band p{color:rgba(255,255,255,.9);font-size:15.5px;line-height:1.75;margin:0;max-width:520px}
.cta-form{display:flex;gap:10px;padding:10px;border-radius:18px;background:rgba(15,10,22,.35);border:1px solid rgba(255,255,255,.2)}
@media (max-width:575px){.cta-form{flex-direction:column}}
.cta-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:12px;
  border:1px solid rgba(255,255,255,.2);background:rgba(15,10,22,.45);
  color:#fff;font-size:14.5px;outline:none;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.55)}
.cta-form input:focus{border-color:rgba(255,255,255,.6);box-shadow:0 0 0 3px rgba(255,255,255,.18)}
.cta-form button{
  height:48px;padding:0 26px;border:0;border-radius:12px;background:#fff;color:#1D1526;
  font-size:14.5px;font-weight:800;cursor:pointer;white-space:nowrap;
  transition:transform 200ms var(--ease),filter 200ms var(--ease);
}
.cta-form button:hover{filter:brightness(.96);transform:translateY(-1px)}
.cta-form button:active{transform:scale(.98)}
.form-note{display:none;margin:14px 0 0;padding-left:12px;border-left:3px solid transparent;font-size:13px;color:#fff;line-height:1.7}
.form-note.is-err{display:block;border-left-color:#F43F5E}
.form-note.is-ok{display:block;border-left-color:#34D399}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:80px;background:var(--surface);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--brand-grad)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 36px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:44px 0 30px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;gap:26px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{display:block;font-size:15px;font-weight:800;line-height:1.35}
.footer-brand strong span{display:block;font-size:11.5px;font-weight:400;color:var(--text-3);margin-top:3px}
.footer-about{margin:0;max-width:340px;font-size:13.5px;line-height:1.8;color:var(--text-2)}
.footer-title{font-size:13px;font-weight:800;color:var(--text-3);margin-bottom:14px;letter-spacing:.04em}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{display:inline-block;font-size:14px;color:var(--text-2);transition:color 200ms var(--ease),transform 200ms var(--ease)}
.footer-links a:hover{color:var(--brand-1);transform:translateX(2px)}
.footer-contact li{font-size:13.5px;line-height:1.8;color:var(--text-2)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:1040;
  width:48px;height:48px;border:0;border-radius:999px;
  background:var(--brand-grad);color:#fff;display:grid;place-items:center;
  font-size:16px;box-shadow:var(--sh-2);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{filter:brightness(1.06)}
@media (max-width:575px){.back-top{right:16px;bottom:18px;width:44px;height:44px}}

/* ---------- Bootstrap 组件覆盖 ---------- */
.btn{--bs-btn-border-radius:12px;--bs-btn-font-weight:700}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--line);--bs-accordion-color:var(--text)}
.form-control,.form-select{
  background:var(--card);border:1px solid var(--line);color:var(--text);
  border-radius:12px;min-height:46px;font-size:14.5px;
}
.form-control:focus,.form-select:focus{
  background:var(--elev);border-color:var(--line-brand);
  box-shadow:0 0 0 3px rgba(255,106,43,.28);color:var(--text);
}
.form-control::placeholder{color:var(--text-3)}
.badge{--bs-badge-border-radius:999px;font-weight:700}
.pagination{--bs-pagination-bg:var(--card);--bs-pagination-color:var(--text-2);--bs-pagination-border-color:var(--line);--bs-pagination-hover-bg:var(--elev);--bs-pagination-hover-color:#fff;--bs-pagination-active-bg:var(--brand-2);--bs-pagination-active-border-color:transparent}
.nav-tabs{--bs-nav-tabs-border-color:var(--line);--bs-nav-tabs-link-active-bg:var(--elev);--bs-nav-tabs-link-active-color:#fff}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .entry-card:hover,.point-list li:hover,.rel-card:hover{transform:none}
}

/* roulang page: category2 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand-1:#FF6A2B;
  --brand-2:#E8327A;
  --brand-3:#7B3FE4;
  --brand-grad:linear-gradient(135deg,#FF6A2B 0%,#E8327A 52%,#7B3FE4 100%);
  --accent:#22D3B8;

  --bg:#0F0A16;
  --surface:#181022;
  --card:#211730;
  --elevate:#2A1E3C;

  --line:rgba(255,255,255,.08);
  --line-brand:rgba(255,106,43,.35);

  --text:#F6F1FA;
  --text-2:#B9AECB;
  --text-3:#8B7FA0;

  --paper:#FBFAFC;
  --paper-text:#1D1526;
  --paper-2:#5B5268;
  --paper-line:#E8E4EF;

  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F43F5E;

  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;

  --sh-1:0 2px 10px rgba(0,0,0,.28);
  --sh-2:0 14px 36px rgba(0,0,0,.38);
  --sh-3:0 30px 70px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.06);

  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;

  /* Bootstrap 变量覆盖 */
  --bs-body-bg:#0F0A16;
  --bs-body-color:#F6F1FA;
  --bs-primary:#FF6A2B;
  --bs-primary-rgb:255,106,43;
  --bs-link-color:#B9AECB;
  --bs-link-hover-color:#FF6A2B;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:16px;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-focus-ring-color:rgba(255,106,43,.4);
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ============ 2. reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  scroll-padding-top:calc(var(--nav-h) + 24px);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:8px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 3. 容器 ============ */
.container-x{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:768px){.container-x{padding-left:24px;padding-right:24px;}}
@media (min-width:1200px){.container-x{padding-left:32px;padding-right:32px;}}
@media (min-width:1600px){.container-x{max-width:1320px;}}

section{position:relative;}
.sec{padding:88px 0;}
.sec-tight{padding:64px 0;}
@media (max-width:991px){.sec{padding:72px 0;}.sec-tight{padding:52px 0;}}
@media (max-width:575px){.sec{padding:56px 0;}.sec-tight{padding:44px 0;}}

/* ============ 4. 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(15,10,22,.9);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(0,0,0,.45);background:rgba(15,10,22,.97);}
.nav-top-inner{display:flex;align-items:center;gap:16px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--brand-grad);
  display:grid;place-items:center;
  font-size:14px;font-weight:900;color:#fff;letter-spacing:.03em;
  box-shadow:0 8px 20px rgba(232,50,122,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:800;color:var(--text);white-space:nowrap;}
.brand-text small{font-size:11.5px;color:var(--text-3);white-space:nowrap;}

.nav-search{
  flex:1 1 auto;
  max-width:420px;
  min-width:180px;
  height:44px;
  display:flex;align-items:center;gap:6px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:999px;
  padding:0 5px 0 18px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{
  border-color:transparent;
  box-shadow:0 0 0 2px rgba(255,106,43,.55),0 0 0 4px rgba(123,63,228,.28);
}
.nav-search input{
  flex:1 1 auto;min-width:0;
  background:none;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:34px;height:34px;flex:0 0 auto;
  border:0;border-radius:50%;
  background:var(--brand-grad);
  color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.nav-search button:hover{filter:brightness(1.08);}
.nav-search button:active{transform:scale(.96);}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--card);
  cursor:pointer;
  padding:0;
  place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:3px auto;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.nav-channels-wrap{position:relative;border-top:1px solid var(--line);}
.nav-channels{
  display:flex;align-items:center;gap:10px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-channels::-webkit-scrollbar{display:none;}
.channel-tab{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  min-height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14px;font-weight:600;
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.channel-tab:hover{color:#fff;border-color:var(--line-brand);background:rgba(255,106,43,.08);}
.channel-tab.active{
  background:var(--brand-grad);
  color:#fff;
  border-color:transparent;
  box-shadow:0 8px 22px rgba(232,50,122,.32);
}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--surface);
  padding:14px 0 18px;
}
.mobile-panel.open{display:block;}
.mobile-panel .container-x{display:flex;flex-direction:column;gap:10px;}
.mobile-panel .channel-tab{justify-content:center;height:46px;border-radius:12px;}

@media (max-width:991px){
  .nav-search{max-width:none;height:42px;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:grid;}
  .nav-channels{
    mask-image:linear-gradient(90deg,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
  }
}
@media (max-width:767px){
  .brand-text small{display:none;}
  .nav-search{display:none;}
  .nav-actions .btn-brand{padding:0 14px;font-size:13.5px;}
}
@media (max-width:400px){
  .brand-text strong{font-size:14px;}
}

/* ============ 5. 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:15px;font-weight:700;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.btn-x:active{transform:scale(.98);}
.btn-brand{background:var(--brand-grad);color:#fff;box-shadow:0 10px 26px rgba(232,50,122,.32);}
.btn-brand:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2);}
.btn-ghost:hover{border-color:var(--line-brand);color:#fff;transform:translateY(-1px);}
.btn-dark{background:rgba(15,10,22,.72);color:#fff;border-color:rgba(255,255,255,.3);}
.btn-dark:hover{background:rgba(15,10,22,.9);transform:translateY(-1px);color:#fff;}
.btn-x[disabled],.btn-x.disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:14px;font-weight:600;min-height:44px;}
.link-arrow i{transition:transform .2s var(--ease);font-style:normal;}
.link-arrow:hover{color:var(--brand-1);}
.link-arrow:hover i{transform:translateX(8px);}

/* ============ 6. 组件 ============ */
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:12.5px;font-weight:600;
  line-height:1.6;
}
.pill-brand{border-color:var(--line-brand);color:#FFD9C6;background:rgba(255,106,43,.12);}
.pill-accent{border-color:rgba(34,211,184,.3);color:#9DF3E4;background:rgba(34,211,184,.1);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(34,211,184,.18);flex:0 0 auto;}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;}

.badge-num{
  display:flex;flex-direction:column;gap:2px;
  padding:14px 18px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--sh-1);
}
.badge-num b{
  font-size:26px;font-weight:800;line-height:1.1;
  background:var(--brand-grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.badge-num span{font-size:12px;color:var(--text-3);}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:22px 0 0;
  font-size:12.5px;
  color:var(--text-3);
}
.crumbs a:hover{color:var(--brand-1);}
.crumbs .sep{color:var(--text-3);opacity:.6;}
.crumbs [aria-current]{color:var(--text-2);}

.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:14px;
}
.sec-title{font-size:clamp(22px,2.4vw,32px);font-weight:800;line-height:1.3;margin-bottom:14px;}
.sec-desc{font-size:16px;color:var(--text-2);line-height:1.8;max-width:780px;}

/* ============ 7. 页面区块 ============ */
.page-intro{
  padding:48px 0 56px;
  text-align:center;
  background:
    radial-gradient(900px 420px at 50% -12%, rgba(123,63,228,.3), transparent 72%),
    radial-gradient(700px 320px at 8% 10%, rgba(255,106,43,.14), transparent 70%);
  border-bottom:1px solid var(--line);
}
.page-intro h1{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:900;
  line-height:1.22;
  max-width:900px;
  margin:18px auto 16px;
}
.page-intro h1 em{
  font-style:normal;
  background:var(--brand-grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.page-intro .lead{
  font-size:17px;
  color:var(--text-2);
  max-width:720px;
  margin:0 auto 22px;
  line-height:1.8;
}
.intro-pills{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.intro-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  max-width:900px;
  margin:0 auto;
}
@media (max-width:767px){
  .intro-stats{grid-template-columns:repeat(2,minmax(0,1fr));max-width:520px;}
}

/* 步骤条 */
.steps{position:relative;max-width:1000px;margin:0 auto;padding:8px 0 0;}
.steps::before{
  content:"";position:absolute;left:50%;top:8px;bottom:24px;width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(255,106,43,.6),rgba(232,50,122,.5),rgba(123,63,228,.5));
}
.step{position:relative;width:calc(50% - 46px);margin-bottom:26px;opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.step.is-in{opacity:1;transform:none;}
.step:nth-child(odd){margin-left:0;text-align:right;}
.step:nth-child(even){margin-left:calc(50% + 46px);}
.step-num{
  position:absolute;top:20px;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand-grad);
  color:#fff;font-size:17px;font-weight:800;
  display:grid;place-items:center;
  box-shadow:0 12px 26px rgba(232,50,122,.34);
}
.step:nth-child(odd) .step-num{right:-68px;}
.step:nth-child(even) .step-num{left:-68px;}
.step-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px 22px;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--sh-3);border-color:var(--line-brand);}
.step-card h3{font-size:17.5px;font-weight:700;margin-bottom:8px;line-height:1.4;}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:10px;}
.step-meta{display:inline-flex;flex-wrap:wrap;gap:8px;justify-content:inherit;}
.step:nth-child(even) .step-meta{justify-content:flex-start;}
@media (max-width:767px){
  .steps::before{left:21px;transform:none;}
  .step,.step:nth-child(odd),.step:nth-child(even){
    width:100%;margin-left:0;padding-left:64px;text-align:left;
  }
  .step:nth-child(odd) .step-num,.step:nth-child(even) .step-num{left:0;right:auto;}
  .step-meta{justify-content:flex-start;}
}

/* 图文交替 */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.media-row + .media-row{margin-top:64px;}
.media-row.reverse .media-figure{order:2;}
.media-figure{
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  aspect-ratio:16/10;
  background:var(--brand-grad);
}
.media-figure img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.media-row:hover .media-figure img{transform:scale(1.06);}
.media-body h2{font-size:clamp(21px,2.2vw,28px);font-weight:800;margin-bottom:16px;line-height:1.35;}
.media-body p{font-size:15.5px;color:var(--text-2);line-height:1.85;margin-bottom:18px;max-width:560px;}
.tick-list{display:flex;flex-direction:column;gap:12px;max-width:560px;}
.tick-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.tick-list li::before{
  content:"";flex:0 0 auto;
  width:18px;height:18px;margin-top:5px;
  border-radius:6px;
  background:var(--brand-grad);
  box-shadow:0 4px 12px rgba(232,50,122,.3);
}
.tick-list li b{color:var(--text);font-weight:700;}
@media (max-width:991px){
  .media-row{grid-template-columns:1fr;gap:26px;}
  .media-row.reverse .media-figure{order:0;}
  .media-row + .media-row{margin-top:48px;}
}

/* 要点马赛克卡 */
.key-mosaic{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  grid-template-rows:auto auto;
  gap:18px;
}
.key-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.key-card:hover{transform:translateY(-6px);box-shadow:var(--sh-3);border-color:var(--line-brand);}
.key-card h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.4;}
.key-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.key-card-lg{grid-row:span 2;padding:0;overflow:hidden;display:flex;flex-direction:column;}
.key-card-lg .key-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-grad);}
.key-card-lg .key-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.key-card-lg:hover .key-media img{transform:scale(1.06);}
.key-card-lg .key-body{padding:22px 24px 26px;}
.key-card-wide{grid-column:span 2;}
.key-flat{background:var(--surface);}
@media (max-width:991px){
  .key-mosaic{grid-template-columns:1fr;grid-template-rows:none;}
  .key-card-lg{grid-row:auto;}
  .key-card-wide{grid-column:auto;}
}

/* 高亮引用带 */
.quote-band{
  position:relative;
  border-radius:var(--r-xl);
  border:1px solid var(--line-brand);
  background:linear-gradient(120deg,rgba(255,106,43,.14),rgba(232,50,122,.12) 50%,rgba(123,63,228,.18));
  padding:38px 44px 34px;
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.quote-band::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:4px;border-radius:0 4px 4px 0;
  background:var(--brand-grad);
}
.quote-band blockquote{margin:0;font-size:clamp(16px,1.7vw,20px);line-height:1.75;font-weight:600;color:var(--text);max-width:860px;}
.quote-band cite{display:block;margin-top:14px;font-style:normal;font-size:13px;color:var(--text-3);}
@media (max-width:575px){.quote-band{padding:28px 24px 26px;}}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq .accordion-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq .accordion-item:hover{border-color:var(--line-brand);}
.faq .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;font-weight:600;
  padding:18px 22px;
  box-shadow:none !important;
  border:0;
  line-height:1.6;
}
.faq .accordion-button:not(.collapsed){background:rgba(255,106,43,.08);color:#fff;}
.faq .accordion-button::after{
  content:"＋";
  background-image:none !important;
  width:auto;height:auto;
  font-size:19px;font-weight:400;
  color:var(--text-2);
  margin-left:auto;padding-left:16px;
  transform:none;
  transition:transform .2s var(--ease),color .2s var(--ease);
  display:flex;align-items:center;
}
.faq .accordion-button:not(.collapsed)::after{content:"－";transform:rotate(180deg);color:var(--brand-1);}
.faq .accordion-button:focus{outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.28) !important;}
.faq .accordion-body{padding:2px 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq .accordion-collapse{border:0;}

/* CTA 带 */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--brand-grad);
  padding:48px;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:6px 6px;
  opacity:.5;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.cta-inner h2{font-size:clamp(21px,2.4vw,30px);font-weight:900;color:#fff;margin-bottom:12px;line-height:1.3;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.9);max-width:520px;line-height:1.8;}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;}
.cta-form input{
  flex:1 1 240px;min-width:0;
  height:48px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.42);
  background:rgba(15,10,22,.32);
  color:#fff;
  padding:0 16px;
  outline:none;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.68);}
.cta-form input:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.28);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px;}
.cta-tip{margin-top:14px;font-size:13px;color:#fff;opacity:0;transition:opacity .25s var(--ease);}
.cta-tip.show{opacity:1;}
@media (max-width:991px){
  .cta-inner{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:34px 24px;}
}

/* 相关分类跳转 */
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:900px;margin:0 auto;}
.related-card{
  display:flex;flex-direction:column;gap:10px;
  padding:24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--sh-3);border-color:var(--line-brand);}
.related-card h3{font-size:17.5px;font-weight:700;}
.related-card p{font-size:14px;color:var(--text-2);line-height:1.7;}
@media (max-width:767px){.related-grid{grid-template-columns:1fr;}}

/* ============ 8. 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:80px;
  padding:56px 0 24px;
  background:var(--surface);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--brand-grad);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{display:flex;flex-direction:column;font-size:15.5px;font-weight:800;line-height:1.3;}
.footer-brand strong span{font-size:11.5px;font-weight:500;color:var(--text-3);margin-top:3px;}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.footer-title{font-size:14px;font-weight:800;color:var(--text);margin-bottom:14px;letter-spacing:.02em;}
.footer-links li,.footer-contact li{margin-bottom:10px;}
.footer-links a,.footer-contact li{
  font-size:14px;color:var(--text-2);line-height:1.7;display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--brand-1);transform:translateX(2px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);
}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;}.footer-bottom{flex-direction:column;}}

/* 返回顶部 */
.to-top{
  position:fixed;right:20px;bottom:24px;
  width:48px;height:48px;border-radius:50%;
  border:0;background:var(--brand-grad);color:#fff;
  display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),filter .2s var(--ease);
  z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{filter:brightness(1.08);}
.to-top:active{transform:scale(.96);}

/* ============ 9. 动效降级 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .step{opacity:1;transform:none;}
  .step-card:hover,.key-card:hover,.related-card:hover{transform:none;}
  html{scroll-behavior:auto;}
}