/* roulang page: index */
/* ============================================================
   俺要操 —— 视觉系统
   ============================================================ */
:root{
  --brand:#e5441f;
  --brand-600:#c2360f;
  --brand-700:#9d2a0a;
  --brand-soft:#fdeee9;
  --accent:#0f6b5c;
  --accent-soft:#e4f2ef;
  --ink:#12161d;
  --ink-2:#39414f;
  --muted:#6c7484;
  --bg:#f4f5f8;
  --surface:#ffffff;
  --line:#e4e7ee;
  --line-strong:#d2d8e2;
  --r-xs:6px;
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,29,.05),0 2px 8px rgba(18,22,29,.05);
  --sh-2:0 10px 28px rgba(18,22,29,.09);
  --sh-3:0 24px 56px rgba(18,22,29,.14);
  --sp-section:clamp(48px,7vw,96px);
  --max:1180px;
  --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid rgba(229,68,31,.42);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:clamp(32px,4vw,56px) 0}
.section--paper{background:var(--surface)}
.section--ink{background:linear-gradient(160deg,#161b24,#232c3a);color:#c9d1de}
.section--ink h2,.section--ink h3{color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand),#f0742f);
  color:#fff;display:grid;place-items:center;
  font-size:17px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(229,68,31,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px}
.brand-sub{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.16em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  display:block;padding:9px 15px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.is-active{background:var(--ink);color:#fff}
.nav-cta{
  margin-left:8px;padding:10px 20px;border-radius:var(--r-pill);
  background:var(--brand);color:#fff!important;font-size:14.5px;font-weight:700;
  box-shadow:0 8px 20px rgba(229,68,31,.26);
}
.nav-cta:hover{background:var(--brand-700)!important}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);color:var(--ink);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(229,68,31,.28)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(229,68,31,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-700);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-700);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.eyebrow--light{background:rgba(255,255,255,.14);color:#ffd9cd}
.tag{
  display:inline-block;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent);
  font-size:12.5px;font-weight:700;
}
.tag--gray{background:#eef0f5;color:var(--muted)}
.tag--warm{background:#fff3e6;color:#b4600f}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(115deg,rgba(14,18,26,.92) 0%,rgba(14,18,26,.74) 45%,rgba(229,68,31,.42) 100%),url("/assets/images/6c6c0a9a15467b10.jpg");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:auto -10% -60% auto;width:560px;height:560px;
  background:radial-gradient(circle,rgba(229,68,31,.45),transparent 66%);filter:blur(10px);
}
.hero-inner{position:relative;z-index:2;padding:clamp(64px,10vw,124px) 0 clamp(56px,8vw,104px);max-width:820px}
.hero h1{
  margin:22px 0 20px;
  font-size:clamp(30px,4.6vw,54px);
  line-height:1.22;font-weight:800;letter-spacing:-.02em;color:#fff;
}
.hero h1 em{font-style:normal;color:#ffb499}
.hero-lead{font-size:clamp(16px,1.5vw,18.5px);color:#dbe2ed;max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  margin-top:46px;padding-top:30px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-facts b{display:block;font-size:clamp(24px,3vw,34px);color:#fff;font-weight:800;letter-spacing:-.02em}
.hero-facts span{font-size:13.5px;color:#bcc6d6}

/* ---------- 标题组 ---------- */
.head{max-width:760px;margin-bottom:clamp(30px,4vw,52px)}
.head h2{
  margin:16px 0 14px;
  font-size:clamp(24px,3vw,36px);
  line-height:1.3;font-weight:800;letter-spacing:-.02em;color:var(--ink);
}
.head p{font-size:16.5px;color:var(--muted)}
.head--center{margin-left:auto;margin-right:auto;text-align:center}
.section--ink .head h2{color:#fff}
.section--ink .head p{color:#a9b4c6}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  position:relative;display:flex;flex-direction:column;
  padding:26px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#dfe4ee}
.card h3{margin-bottom:10px;font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.card p{font-size:15px;color:var(--muted)}
.card-num{
  display:grid;place-items:center;width:42px;height:42px;margin-bottom:18px;
  border-radius:13px;background:var(--brand-soft);color:var(--brand-700);
  font-weight:800;font-size:15px;
}
.card--ink{background:#1b2230;border-color:#2b3548;color:#b9c3d3}
.card--ink h3{color:#fff}
.card--ink p{color:#98a4b8}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;font-weight:700;color:var(--brand-600)}
.card-link::after{content:"→";transition:transform .2s ease}
.card:hover .card-link::after{transform:translateX(4px)}
.card-media{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.card-media:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-media img{width:100%;height:196px;object-fit:cover}
.card-media .body{padding:20px 22px 24px}
.card-media h3{font-size:17.5px;font-weight:800;color:var(--ink);margin:12px 0 8px}
.card-media p{font-size:14.5px;color:var(--muted)}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.cat-card{
  position:relative;display:block;overflow:hidden;border-radius:var(--r-lg);
  min-height:262px;color:#fff;box-shadow:var(--sh-2);
}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,16,23,.18),rgba(12,16,23,.9))}
.cat-card:hover img{transform:scale(1.06)}
.cat-card .inner{position:relative;z-index:2;display:flex;flex-direction:column;height:100%;min-height:262px;padding:24px}
.cat-card .inner .tag{align-self:flex-start}
.cat-card h3{margin-top:auto;font-size:21px;font-weight:800;color:#fff}
.cat-card p{margin-top:8px;font-size:14.5px;color:#d6dde8}
.cat-card .go{margin-top:16px;font-size:14px;font-weight:700;color:#ffb499}

/* ---------- 列表 ---------- */
.list-block{display:grid;gap:14px}
.list-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.list-item:hover{border-color:var(--brand);transform:translateX(4px)}
.list-item .idx{
  flex:0 0 34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--ink);color:#fff;font-weight:800;font-size:13.5px;
}
.list-item h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.list-item p{font-size:14.5px;color:var(--muted)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:st}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.step::before{
  counter-increment:st;content:"0" counter(st);
  display:block;margin-bottom:14px;
  font-size:26px;font-weight:800;color:var(--brand);letter-spacing:-.03em;
}
.step h3{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted)}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:2px;background:var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.stat{background:var(--surface);padding:30px 24px;text-align:center}
.stat b{display:block;font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--ink);letter-spacing:-.03em}
.stat b i{font-style:normal;color:var(--brand);font-size:.6em;margin-left:2px}
.stat span{font-size:14px;color:var(--muted)}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.split img{border-radius:var(--r-lg);box-shadow:var(--sh-2);width:100%;height:100%;max-height:440px;object-fit:cover}
.split h2{margin:16px 0 16px;font-size:clamp(23px,2.8vw,33px);font-weight:800;color:var(--ink);line-height:1.3;letter-spacing:-.02em}
.split p+p{margin-top:14px}
.check{display:grid;gap:12px;margin-top:24px}
.check li{position:relative;padding-left:30px;font-size:15.5px;color:var(--ink-2)}
.check li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:var(--accent-soft);border:2px solid var(--accent);
}

/* ---------- 对比块 ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.compare-col{padding:28px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface)}
.compare-col.is-good{border-color:#bfe0d8;background:linear-gradient(180deg,#f2fbf8,#fff)}
.compare-col h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:16px}
.compare-col li{padding:9px 0 9px 26px;position:relative;font-size:15px;border-bottom:1px dashed var(--line)}
.compare-col li:last-child{border-bottom:0}
.compare-col li::before{position:absolute;left:0;font-weight:800}
.compare-col.is-good li::before{content:"✓";color:var(--accent)}
.compare-col.is-bad li::before{content:"!";color:var(--brand)}

/* ---------- 学员反馈 ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.quote{
  display:flex;flex-direction:column;padding:26px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.quote p{font-size:15px;color:var(--ink-2)}
.quote .who{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.quote .av{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-700);font-weight:800;font-size:14px;
}
.quote .who b{display:block;font-size:14.5px;color:var(--ink)}
.quote .who span{font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq details{
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  padding:0 22px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:#f2c6b8;box-shadow:var(--sh-1)}
.faq summary{
  cursor:pointer;list-style:none;padding:19px 0;
  font-size:16.5px;font-weight:700;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;font-weight:700;color:var(--brand);line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 0 20px;font-size:15px;color:var(--muted)}

/* ---------- 转化区 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:clamp(34px,5vw,64px);
  background-image:linear-gradient(115deg,rgba(20,25,34,.94),rgba(229,68,31,.72)),url("/assets/images/2feb4a062cec129d.jpg");
  background-size:cover;background-position:center;color:#fff;
  display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);font-weight:800;color:#fff;line-height:1.3;letter-spacing:-.02em}
.cta-band p{margin-top:12px;color:#e2e7ef;max-width:560px}
.cta-band .acts{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#141a24;color:#94a0b3;padding:clamp(44px,6vw,72px) 0 26px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.site-footer a{color:#94a0b3;display:inline-block;padding:5px 0}
.site-footer a:hover{color:#fff}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#6f7c90}
.foot-about{max-width:330px;line-height:1.8}
.foot-meta{margin-top:8px;color:#66738a;font-size:13.5px}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid #232c39;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#6f7c90;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .g-4,.steps,.stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-3,.cat-grid,.quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .split img{max-height:360px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{grid-template-columns:1fr}
}
@media (max-width:768px){
  .nav-links{
    position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px 20px 20px;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:var(--r-sm)}
  .nav-cta{margin-left:0;text-align:center}
  .nav-toggle{display:grid}
  .hero-facts{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr}
  .list-item{padding:16px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .g-2,.g-3,.g-4,.steps,.stats,.cat-grid,.quotes,.hero-facts{grid-template-columns:1fr}
  .card,.step{padding:22px}
  .stat{padding:24px 18px}
  .foot-grid{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}
  .hero-actions .btn{width:auto}
  .brand-sub{display:none}
}

/* roulang page: category1 */
:root{
 --brand:#e5441f;
 --brand-600:#c2360f;
 --brand-700:#9d2a0a;
 --brand-soft:#fdeee9;
 --accent:#0f6b5c;
 --accent-soft:#e4f2ef;
 --ink:#12161d;
 --ink-2:#39414f;
 --muted:#6c7484;
 --bg:#f4f5f8;
 --surface:#ffffff;
 --line:#e4e7ee;
 --line-strong:#d2d8e2;
 --r-xs:6px;
 --r-sm:10px;
 --r:14px;
 --r-lg:20px;
 --r-pill:999px;
 --sh-1:0 1px 2px rgba(18,22,29,.05),0 2px 8px rgba(18,22,29,.05);
 --sh-2:0 10px 28px rgba(18,22,29,.09);
 --sh-3:0 24px 56px rgba(18,22,29,.14);
 --sp-section:clamp(48px,7vw,96px);
 --max:1180px;
 --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:var(--ff);
 font-size:16px;
 line-height:1.75;
 color:var(--ink-2);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
 outline:3px solid rgba(229,68,31,.4);outline-offset:2px;border-radius:var(--r-xs);
}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:clamp(34px,4.5vw,60px) 0}
.section--paper{background:var(--surface)}
.section--ink{background:linear-gradient(160deg,#161b24,#232c3a);color:#c9d1de}
.section--ink h2,.section--ink h3{color:#fff}
.section--ink .section-desc{color:#a9b4c4}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,48px)}
.section-head h2{font-size:clamp(23px,3vw,34px);margin:16px 0 14px}
.section-desc{color:var(--muted);font-size:16.5px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
/* ---------- 导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
 width:38px;height:38px;flex:0 0 38px;border-radius:11px;
 background:linear-gradient(140deg,var(--brand),#f0742f);
 color:#fff;display:grid;place-items:center;
 font-size:17px;font-weight:800;letter-spacing:.02em;
 box-shadow:0 6px 16px rgba(229,68,31,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px}
.brand-sub{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.16em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{display:block;padding:9px 15px;border-radius:var(--r-pill);font-size:15px;font-weight:600;color:var(--ink-2)}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.is-active{background:var(--ink);color:#fff}
.nav-cta{
 margin-left:8px;padding:10px 20px;border-radius:var(--r-pill);
 background:var(--brand);color:#fff!important;font-size:14.5px;font-weight:700;
 box-shadow:0 8px 20px rgba(229,68,31,.26);
}
.nav-cta:hover{background:var(--brand-700)!important}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);color:var(--ink);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:13px 26px;border-radius:var(--r-pill);
 font-size:15.5px;font-weight:700;line-height:1;
 transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(229,68,31,.28)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(229,68,31,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-700);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
/* ---------- 徽章 / 标签 ---------- */
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:var(--r-pill);
 background:var(--brand-soft);color:var(--brand-700);
 font-size:13px;font-weight:700;letter-spacing:.04em;
}
.eyebrow--light{background:rgba(255,255,255,.14);color:#ffd9cd}
.tag{display:inline-block;padding:5px 12px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);font-size:12.5px;font-weight:700}
.tag--gray{background:#eef0f5;color:var(--muted)}
.tag--warm{background:#fff3e6;color:#b4600f}
/* ---------- 内页首屏 ---------- */
.page-hero{
 position:relative;overflow:hidden;color:#fff;
 background-image:linear-gradient(120deg,rgba(14,18,26,.93) 0%,rgba(14,18,26,.78) 48%,rgba(229,68,31,.4) 100%),url("/assets/images/4b9f11c70d461a38.jpg");
 background-size:cover;background-position:center;
}
.page-hero::after{
 content:"";position:absolute;right:-120px;bottom:-220px;width:520px;height:520px;
 background:radial-gradient(circle,rgba(229,68,31,.42),transparent 68%);
}
.page-hero .container{position:relative;z-index:2;padding-top:clamp(38px,6vw,66px);padding-bottom:clamp(40px,6vw,72px)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#a9b4c4;margin-bottom:22px}
.breadcrumb a{color:#dbe2ed}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{opacity:.65}
.page-hero h1{font-size:clamp(28px,4.2vw,46px);color:#fff;margin:18px 0 18px;letter-spacing:-.02em}
.page-hero h1 em{font-style:normal;color:#ffb499}
.page-hero-lead{font-size:clamp(15.5px,1.5vw,18px);color:#dbe2ed;max-width:720px}
.hero-facts{
 display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
 margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-facts b{display:block;font-size:clamp(22px,2.8vw,32px);color:#fff;font-weight:800;letter-spacing:-.02em}
.hero-facts span{font-size:13.5px;color:#a9b4c4}
/* ---------- 卡片 ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.card h3{font-size:18.5px;margin:14px 0 10px}
.card p{color:var(--muted);font-size:15px}
.card-num{
 display:grid;place-items:center;width:40px;height:40px;border-radius:12px;
 background:var(--brand-soft);color:var(--brand-700);font-weight:800;font-size:15px;
}
.card-icon{
 display:grid;place-items:center;width:44px;height:44px;border-radius:14px;
 background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:16px;
}
/* 模块卡（带图） */
.module{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 overflow:hidden;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease;
 display:flex;flex-direction:column;
}
.module:hover{transform:translateY(-5px);box-shadow:var(--sh-2)}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#e9ecf2}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.module:hover .thumb img{transform:scale(1.05)}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,22,29,0) 45%,rgba(18,22,29,.5))}
.thumb-index{
 position:absolute;left:14px;top:14px;z-index:2;
 padding:5px 12px;border-radius:var(--r-pill);
 background:rgba(255,255,255,.92);color:var(--ink);font-size:12.5px;font-weight:800;letter-spacing:.04em;
}
.module-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.module-body h3{font-size:18px}
.module-body p{color:var(--muted);font-size:14.8px;margin:0;flex:1}
.module-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
/* ---------- 步骤 ---------- */
.steps{counter-reset:step;display:grid;gap:16px}
.step{
 display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-1);
 transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:var(--brand);transform:translateX(4px)}
.step-no{
 font-size:22px;font-weight:800;color:var(--brand);
 border-right:1px solid var(--line);padding-right:16px;line-height:1.4;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px;margin:0}
/* ---------- 阶段卡 ---------- */
.phase{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
 transition:transform .22s ease,box-shadow .22s ease;
}
.phase:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.phase::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand)}
.phase:nth-child(2)::before{background:#f0742f}
.phase:nth-child(3)::before{background:var(--accent)}
.phase-days{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--brand-700)}
.phase h3{font-size:19px;margin:10px 0 12px}
.phase ul{display:grid;gap:9px;margin-top:14px}
.phase li{position:relative;padding-left:20px;font-size:14.8px;color:var(--ink-2)}
.phase li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.phase-check{margin-top:16px;padding:12px 14px;border-radius:var(--r);background:var(--bg);font-size:14.4px;color:var(--ink-2)}
/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.faq-q{
 width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:20px 24px;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
 transition:background .2s ease;
}
.faq-q:hover{background:var(--brand-soft);color:var(--brand-700)}
.faq-q .chev{
 flex:0 0 26px;width:26px;height:26px;border-radius:50%;
 background:var(--brand-soft);color:var(--brand-700);display:grid;place-items:center;font-size:14px;font-weight:800;
 transition:transform .25s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .chev{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{display:none;padding:0 24px 22px;color:var(--muted);font-size:15.2px;border-top:1px solid var(--line);padding-top:18px}
.faq-item.is-open .faq-a{display:block}
/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,4vw,56px);align-items:center}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 20px;
 background:linear-gradient(180deg,rgba(18,22,29,0),rgba(18,22,29,.82));
 color:#fff;font-size:13.8px;
}
.check-list{display:grid;gap:14px;margin-top:22px}
.check-list li{
 display:grid;grid-template-columns:26px 1fr;gap:12px;align-items:start;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
 padding:15px 18px;font-size:15.2px;box-shadow:var(--sh-1);
}
.check-list b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:2px}
.check-list span{color:var(--muted);font-size:14.4px}
.check-mark{
 width:26px;height:26px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
 display:grid;place-items:center;font-size:13px;font-weight:800;
}
/* ---------- 指标 ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:8px}
.metric{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:28px 24px;box-shadow:var(--sh-1);text-align:center;
 transition:transform .22s ease,box-shadow .22s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.metric b{display:block;font-size:clamp(26px,3.4vw,38px);color:var(--brand);font-weight:800;letter-spacing:-.02em}
.metric span{display:block;margin-top:8px;font-size:14.4px;color:var(--muted)}
/* ---------- 文章列表 ---------- */
.post-list{display:grid;gap:16px}
.post{
 display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:22px 24px;box-shadow:var(--sh-1);
 transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.post:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--sh-2)}
.post h3{font-size:17.5px;margin:10px 0 8px}
.post p{color:var(--muted);font-size:14.8px;margin:0}
.post-side{font-size:13px;color:var(--muted);white-space:nowrap}
/* ---------- 收口 / 表单 ---------- */
.cta-band{
 background:linear-gradient(140deg,#161b24,#2a3342 60%,#3a2a26);
 border-radius:var(--r-lg);padding:clamp(30px,4.6vw,54px);
 color:#cdd5e0;box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);margin-bottom:14px}
.cta-band p{color:#a9b4c4;max-width:620px}
.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13.6px;font-weight:700;color:#dbe2ed}
.field input,.field select{
 width:100%;padding:13px 15px;border-radius:var(--r);
 border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);
 color:#fff;font-size:15px;font-family:var(--ff);
 transition:border-color .2s ease,background .2s ease;
}
.field input::placeholder{color:#8d97a7}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.12)}
.field select option{color:#12161d}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px}
.form-note{font-size:13.6px;color:#8d97a7}
/* ---------- 页脚 ---------- */
.site-footer{background:#10141b;color:#98a2b3;padding:clamp(48px,6vw,76px) 0 30px;margin-top:0}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#6c7484}
.site-footer .brand:hover .brand-name{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.foot-about{font-size:14.6px;line-height:1.8;margin:18px 0 12px;color:#8b95a5;max-width:360px}
.foot-meta{font-size:13.4px;color:#6c7484}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px;letter-spacing:.02em}
.site-footer ul{display:grid;gap:10px}
.site-footer ul a{color:#98a2b3;font-size:14.6px}
.site-footer ul a:hover{color:#fff}
.foot-bottom{
 display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
 margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
 font-size:13.4px;color:#6c7484;
}
/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .split{grid-template-columns:1fr}
 .split-media{order:-1}
 .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
 .form-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
 .nav-toggle{display:grid}
 .nav-links{
  position:absolute;top:72px;left:0;right:0;display:none;
  flex-direction:column;align-items:stretch;gap:4px;margin:0;
  background:#fff;border-bottom:1px solid var(--line);
  padding:14px 20px 20px;box-shadow:var(--sh-2);
 }
 .nav-links.is-open{display:flex}
 .nav-links a{padding:12px 14px;border-radius:var(--r)}
 .nav-cta{margin-left:0;margin-top:6px;text-align:center}
}
@media (max-width:768px){
 .hero-facts{grid-template-columns:1fr;gap:14px;text-align:left}
 .grid-3,.grid-2{grid-template-columns:1fr}
 .metrics{grid-template-columns:1fr}
 .step{grid-template-columns:1fr;gap:12px}
 .step-no{border-right:0;border-bottom:1px solid var(--line);padding:0 0 10px}
 .post{grid-template-columns:1fr}
 .post-side{white-space:normal}
 .form-grid{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:1fr}
 .foot-bottom{flex-direction:column}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .grid-4{grid-template-columns:1fr}
 .card,.module-body,.phase{padding-left:18px;padding-right:18px}
 .faq-q{padding:16px 18px;font-size:15.6px}
 .faq-a{padding:16px 18px 20px}
 .btn{width:100%}
 .form-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
 --brand:#e5441f;
 --brand-600:#c2360f;
 --brand-700:#9d2a0a;
 --brand-soft:#fdeee9;
 --accent:#0f6b5c;
 --accent-soft:#e4f2ef;
 --ink:#12161d;
 --ink-2:#39414f;
 --muted:#6c7484;
 --bg:#f4f5f8;
 --surface:#ffffff;
 --line:#e4e7ee;
 --line-strong:#d2d8e2;
 --r-xs:6px;
 --r-sm:10px;
 --r:14px;
 --r-lg:20px;
 --r-pill:999px;
 --sh-1:0 1px 2px rgba(18,22,29,.05),0 2px 8px rgba(18,22,29,.05);
 --sh-2:0 10px 28px rgba(18,22,29,.09);
 --sh-3:0 24px 56px rgba(18,22,29,.14);
 --sp-section:clamp(48px,7vw,96px);
 --max:1180px;
 --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:var(--ff);
 font-size:16px;
 line-height:1.75;
 color:var(--ink-2);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.32;letter-spacing:-.01em;font-weight:800}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background .2s ease,box-shadow .2s ease,transform .2s ease}
a:hover{color:var(--brand)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:3px solid rgba(229,68,31,.45);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.92);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;position:relative}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
 width:38px;height:38px;flex:0 0 38px;border-radius:11px;
 background:linear-gradient(140deg,var(--brand),#f0742f);
 color:#fff;display:grid;place-items:center;
 font-size:17px;font-weight:800;letter-spacing:.02em;
 box-shadow:0 6px 16px rgba(229,68,31,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px}
.brand-sub{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.16em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{display:block;padding:9px 15px;border-radius:var(--r-pill);font-size:15px;font-weight:600;color:var(--ink-2)}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.is-active{background:var(--ink);color:#fff}
.nav-cta{
 margin-left:8px;padding:10px 20px;border-radius:var(--r-pill);
 background:var(--brand);color:#fff!important;font-size:14.5px;font-weight:700;
 box-shadow:0 8px 20px rgba(229,68,31,.26);
}
.nav-cta:hover{background:var(--brand-700)!important;color:#fff!important}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);color:var(--ink);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:13px 26px;border-radius:var(--r-pill);
 font-size:15.5px;font-weight:700;line-height:1;
 transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(229,68,31,.28)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(229,68,31,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-700);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:var(--r-pill);
 background:var(--brand-soft);color:var(--brand-700);
 font-size:13px;font-weight:700;letter-spacing:.04em;
}
.eyebrow--light{background:rgba(255,255,255,.14);color:#ffd9cd}
.tag{display:inline-block;padding:5px 12px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);font-size:12.5px;font-weight:700}
.tag--gray{background:#eef0f5;color:var(--muted)}
.tag--warm{background:#fff3e6;color:#b4600f}

/* ---------- 板块骨架 ---------- */
.section{padding:var(--sp-section) 0}
.section--tight{padding:clamp(32px,4vw,56px) 0}
.section--paper{background:var(--surface)}
.section-head{max-width:780px;margin-bottom:clamp(26px,3.4vw,42px)}
.section-head h2{font-size:clamp(23px,2.8vw,34px);margin:14px 0 12px}
.section-head p{color:var(--muted);font-size:16.5px;margin:0}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-line{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 内页 Banner ---------- */
.page-hero{
 position:relative;overflow:hidden;color:#fff;
 background-image:linear-gradient(115deg,rgba(14,18,26,.94) 0%,rgba(14,18,26,.76) 48%,rgba(157,42,10,.62) 100%),url("/assets/images/4b9f11c70d461a38.jpg");
 background-size:cover;background-position:center;
}
.page-hero::after{
 content:"";position:absolute;right:-12%;bottom:-58%;width:520px;height:520px;
 background:radial-gradient(circle,rgba(229,68,31,.4),transparent 66%);
 filter:blur(8px);pointer-events:none;
}
.page-hero__inner{position:relative;z-index:2;padding:clamp(52px,8vw,98px) 0 clamp(46px,6vw,84px);max-width:790px}
.page-hero h1{color:#fff;font-size:clamp(28px,4vw,46px);margin:18px 0 16px}
.page-hero p{color:#dbe2ed;font-size:clamp(15.5px,1.4vw,18px);max-width:660px;margin:0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#b9c3d2}
.breadcrumb a{color:#e7ecf4;font-weight:600}
.breadcrumb a:hover{color:#ffb499}
.breadcrumb span.sep{opacity:.6}

/* ---------- 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.filter-chip{
 padding:8px 16px;border-radius:var(--r-pill);
 background:var(--surface);border:1px solid var(--line-strong);
 font-size:14px;font-weight:600;color:var(--ink-2);
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-700)}
.filter-chip.is-on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.s-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.s-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.s-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#e9ecf2}
.s-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.s-card:hover .s-card__media img{transform:scale(1.05)}
.s-card__badge{position:absolute;top:12px;left:12px}
.s-card__body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.s-card__body h3{font-size:17.5px}
.s-card__body p{font-size:14.5px;color:var(--muted);margin:0}
.s-card__meta{margin-top:auto;display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line)}

/* ---------- 四步演练 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
 position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 22px 24px;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step__no{
 display:grid;place-items:center;width:42px;height:42px;border-radius:13px;
 background:var(--brand-soft);color:var(--brand-700);font-weight:800;font-size:16px;
 margin-bottom:16px;
}
.step h3{font-size:17.5px;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- 失误对照 ---------- */
.pitfall-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.pitfall{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:22px 22px 14px;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.pitfall:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.pitfall h3{font-size:16.5px;margin-bottom:16px}
.pitfall-row{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.65;padding:11px 13px;border-radius:var(--r-sm);margin-bottom:10px}
.pitfall-row b{flex:0 0 auto;font-weight:800}
.pitfall-row--bad{background:#fdeee9;color:#8f2c0c}
.pitfall-row--good{background:var(--accent-soft);color:#0b4a41}

/* ---------- 图文分栏 / 核对清单 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(24px,4vw,54px);align-items:center}
.split__media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background:#e9ecf2}
.split__media img{width:100%;height:100%;object-fit:cover}
.split__media figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 18px;color:#fff;font-size:13.5px;
 background:linear-gradient(180deg,rgba(14,18,26,0),rgba(14,18,26,.82));
}
.check-list{display:grid;gap:12px;margin-top:24px}
.check-item{
 display:flex;gap:12px;align-items:flex-start;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
 padding:14px 16px;box-shadow:var(--sh-1);
 transition:border-color .2s ease,transform .2s ease;
}
.check-item:hover{border-color:var(--brand);transform:translateX(3px)}
.check-dot{
 flex:0 0 26px;width:26px;height:26px;border-radius:9px;
 background:var(--accent-soft);color:var(--accent);
 display:grid;place-items:center;font-size:13px;font-weight:800;margin-top:2px;
}
.check-item strong{display:block;color:var(--ink);font-size:15.5px;font-weight:700}
.check-item span.note{font-size:13.5px;color:var(--muted)}

/* ---------- 难度分级 ---------- */
.level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.level{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease;
}
.level:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.level h3{font-size:19px;margin-bottom:8px}
.level-bar{height:6px;border-radius:var(--r-pill);background:var(--line);overflow:hidden;margin:16px 0 18px}
.level-bar span{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand),#f0742f)}
.level ul{display:grid;gap:10px}
.level li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2)}
.level li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ---------- 反馈 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.voice{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;
}
.voice p{font-size:15px;color:var(--ink-2);margin:0}
.voice__who{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--brand-soft);color:var(--brand-700);display:grid;place-items:center;font-weight:800;font-size:16px}
.voice__who b{display:block;color:var(--ink);font-size:15px}
.voice__who em{font-style:normal;font-size:13px;color:var(--muted)}

/* ---------- 频道矩阵 ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.matrix-card{
 display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;color:var(--ink);box-shadow:var(--sh-1);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.matrix-card:hover{color:var(--ink);transform:translateY(-5px);box-shadow:var(--sh-2);border-color:var(--brand)}
.matrix-card h3{font-size:18px;margin:12px 0 10px}
.matrix-card p{font-size:14.5px;color:var(--muted);margin:0 0 16px}
.matrix-card .go{font-size:14px;font-weight:700;color:var(--brand-600)}
.matrix-card:hover .go{color:var(--brand)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:900px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-1);overflow:hidden}
.faq details[open]{border-color:var(--line-strong);box-shadow:var(--sh-2)}
.faq summary{
 cursor:pointer;padding:18px 22px;font-weight:700;color:var(--ink);font-size:16.5px;
 list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;color:var(--brand);font-weight:800;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .faq-a{padding:0 22px 20px;font-size:15px;color:var(--ink-2)}
.faq .faq-a p:last-child{margin-bottom:0}

/* ---------- 转化区 ---------- */
.cta-band{
 position:relative;overflow:hidden;border-radius:calc(var(--r-lg) + 6px);
 padding:clamp(34px,5vw,62px);color:#fff;
 background-image:linear-gradient(120deg,rgba(14,18,26,.95) 0%,rgba(157,42,10,.84) 100%),url("/assets/images/049e897c6346f77a.webp");
 background-size:cover;background-position:center;
 box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,36px);margin:16px 0 14px}
.cta-band p{color:#e6ebf3;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cta-points span{
 padding:7px 14px;border-radius:var(--r-pill);
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:13.5px;color:#fff;font-weight:600;
}

/* ---------- 页脚 ---------- */
.site-footer{background:#12161d;color:#a9b3c3;padding:clamp(46px,6vw,76px) 0 26px}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-sub{color:#7d8798}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-grid ul{display:grid;gap:10px}
.foot-grid a{color:#a9b3c3;font-size:14.5px}
.foot-grid a:hover{color:#fff}
.foot-about{font-size:14.5px;color:#98a2b3;margin:18px 0 10px;max-width:400px}
.foot-meta{font-size:13px;color:#7d8798;margin:0}
.foot-bottom{
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 font-size:13px;color:#7d8798;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:768px){
 .nav-toggle{display:grid}
 .nav-links{
  position:absolute;top:calc(100% + 1px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;
  background:#fff;border-bottom:1px solid var(--line);
  padding:14px 20px 20px;display:none;box-shadow:var(--sh-2);
 }
 .nav-links.is-open{display:flex}
 .nav-links a{padding:12px 14px;border-radius:var(--r-sm);font-size:15.5px}
 .nav-cta{margin-left:0;text-align:center}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .pitfall-grid{grid-template-columns:1fr}
 .level-grid,.voice-grid,.matrix-grid{grid-template-columns:1fr}
 .split{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:1fr 1fr}
 .page-hero__inner{padding-top:44px}
}
@media (max-width:520px){
 .card-grid{grid-template-columns:1fr}
 .steps{grid-template-columns:1fr}
 .foot-grid{grid-template-columns:1fr}
 .brand-sub{display:none}
 .btn{width:100%}
 .cta-actions{flex-direction:column}
 .container{padding:0 16px}
 h1{letter-spacing:-.02em}
}

/* roulang page: category3 */
:root{
 --brand:#e5441f;
 --brand-600:#c2360f;
 --brand-700:#9d2a0a;
 --brand-soft:#fdeee9;
 --accent:#0f6b5c;
 --accent-soft:#e4f2ef;
 --ink:#12161d;
 --ink-2:#39414f;
 --muted:#6c7484;
 --bg:#f4f5f8;
 --surface:#ffffff;
 --line:#e4e7ee;
 --line-strong:#d2d8e2;
 --r-xs:6px;
 --r-sm:10px;
 --r:14px;
 --r-lg:20px;
 --r-pill:999px;
 --sh-1:0 1px 2px rgba(18,22,29,.05),0 2px 8px rgba(18,22,29,.05);
 --sh-2:0 10px 28px rgba(18,22,29,.09);
 --sh-3:0 24px 56px rgba(18,22,29,.14);
 --sp-section:clamp(48px,7vw,96px);
 --max:1180px;
 --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:var(--ff);
 font-size:16px;
 line-height:1.75;
 color:var(--ink-2);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.015em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(229,68,31,.42);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:var(--sp-section) 0}
.section--tight{padding:clamp(32px,4vw,56px) 0}
.section--paper{background:var(--surface)}
.section--ink{background:linear-gradient(160deg,#161b24,#232c3a);color:#c9d1de}
.section--ink h2,.section--ink h3{color:#fff}
/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.92);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
 width:38px;height:38px;flex:0 0 38px;border-radius:11px;
 background:linear-gradient(140deg,var(--brand),#f0742f);
 color:#fff;display:grid;place-items:center;
 font-size:17px;font-weight:800;letter-spacing:.02em;
 box-shadow:0 6px 16px rgba(229,68,31,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px}
.brand-sub{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.16em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
 display:block;padding:9px 15px;border-radius:var(--r-pill);
 font-size:15px;font-weight:600;color:var(--ink-2);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.is-active{background:var(--ink);color:#fff}
.nav-cta{
 margin-left:8px;padding:10px 20px;border-radius:var(--r-pill);
 background:var(--brand);color:#fff!important;font-size:14.5px;font-weight:700;
 box-shadow:0 8px 20px rgba(229,68,31,.26);
}
.nav-cta:hover{background:var(--brand-700)!important}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);color:var(--ink);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;gap:8px;
 padding:13px 26px;border-radius:var(--r-pill);
 font-size:15.5px;font-weight:700;line-height:1;
 transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(229,68,31,.28)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(229,68,31,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(229,68,31,.26)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-700);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-sm{padding:10px 18px;font-size:14px}
/* ---------- 徽章 / 标签 ---------- */
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:var(--r-pill);
 background:var(--brand-soft);color:var(--brand-700);
 font-size:13px;font-weight:700;letter-spacing:.04em;
}
.eyebrow--light{background:rgba(255,255,255,.14);color:#ffd9cd}
.tag{
 display:inline-block;padding:5px 12px;border-radius:var(--r-pill);
 background:var(--accent-soft);color:var(--accent);
 font-size:12.5px;font-weight:700;
}
.tag--gray{background:#eef0f5;color:var(--muted)}
.tag--warm{background:#fff3e6;color:#b4600f}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
/* ---------- 内页 Banner ---------- */
.page-hero{
 position:relative;overflow:hidden;color:#fff;
 background-image:linear-gradient(115deg,rgba(12,16,23,.93) 0%,rgba(12,16,23,.76) 48%,rgba(229,68,31,.42) 100%),url("/assets/images/2feb4a062cec129d.jpg");
 background-size:cover;background-position:center;
}
.page-hero::after{
 content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;
 background:radial-gradient(circle,rgba(229,68,31,.42),transparent 66%);
 pointer-events:none;
}
.page-hero .ph-inner{position:relative;z-index:2;padding:clamp(46px,7vw,84px) 0 clamp(40px,6vw,72px);max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#b9c2d0;margin-bottom:18px}
.breadcrumb a{color:#e6ebf3}
.breadcrumb a:hover{color:#ffb499}
.breadcrumb span.sep{opacity:.5}
.page-hero h1{
 color:#fff;font-size:clamp(27px,4vw,46px);line-height:1.24;margin-bottom:16px;letter-spacing:-.02em;
}
.page-hero h1 em{font-style:normal;color:#ffb499}
.page-hero p.lead{color:#dbe2ed;font-size:clamp(15.5px,1.4vw,17.5px);max-width:700px}
.hero-stats{
 display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
 margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats b{display:block;font-size:clamp(22px,2.6vw,30px);color:#fff;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.hero-stats span{font-size:13px;color:#b9c2d0}
/* ---------- 板块标题 ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(28px,3.4vw,46px)}
.sec-head h2{font-size:clamp(23px,2.7vw,34px);margin:14px 0 12px}
.sec-head p{color:var(--muted);font-size:16px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head--center .eyebrow{margin:0 auto}
/* ---------- 网格 ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* ---------- 卡片 ---------- */
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.card h3{font-size:18px;margin:14px 0 8px}
.card p{color:var(--muted);font-size:14.8px}
.card-ico{
 width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand-700);font-weight:800;font-size:17px;
}
.card-ico--accent{background:var(--accent-soft);color:var(--accent)}
.card-num{
 font-size:12.5px;font-weight:800;color:var(--brand);letter-spacing:.14em;
}
.card-list{margin-top:14px;display:grid;gap:8px}
.card-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2)}
.card-list li::before{
 content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:50%;
 background:var(--brand);opacity:.85;
}
/* ---------- 图文卡片 ---------- */
.media-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 overflow:hidden;box-shadow:var(--sh-1);height:100%;
 transition:transform .2s ease,box-shadow .2s ease;
 display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.media-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dfe3ea}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.media-card:hover .thumb img{transform:scale(1.05)}
.media-card .thumb::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(12,16,23,0) 45%,rgba(12,16,23,.5));
}
.media-card .thumb .tag{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.92);color:var(--brand-700)}
.media-card .body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.media-card .body h3{font-size:18px;margin-bottom:10px}
.media-card .body p{color:var(--muted);font-size:14.8px}
.media-card .body .tag-row{margin-top:16px}
/* ---------- 两栏内容 ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}
.panel{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:28px;box-shadow:var(--sh-1);
}
.panel--brand{background:var(--brand-soft);border-color:#f7d3c8;box-shadow:none}
.panel h3{font-size:19px;margin-bottom:14px}
.panel p{font-size:14.8px;color:var(--ink-2)}
/* ---------- 清单 ---------- */
.check-list{display:grid;gap:14px}
.check-list li{
 display:flex;gap:14px;align-items:flex-start;
 padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);
 background:var(--surface);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.check-list li:hover{border-color:#f0c6b9;box-shadow:var(--sh-1);transform:translateX(3px)}
.check-list .idx{
 flex:0 0 30px;width:30px;height:30px;border-radius:9px;
 background:var(--ink);color:#fff;display:grid;place-items:center;
 font-size:13.5px;font-weight:800;
}
.check-list b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:3px}
.check-list span{display:block;color:var(--muted);font-size:14.2px}
/* ---------- 规格对照 ---------- */
.spec-grid{display:grid;gap:18px}
.spec-row{
 display:grid;grid-template-columns:.9fr 1.1fr 1fr;gap:18px;
 padding:20px 22px;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--r);box-shadow:var(--sh-1);
 transition:border-color .2s ease,box-shadow .2s ease;
}
.spec-row:hover{border-color:var(--line-strong);box-shadow:var(--sh-2)}
.spec-row .spec-key{font-weight:800;color:var(--ink);font-size:15.5px}
.spec-row .spec-key small{display:block;font-weight:600;color:var(--muted);font-size:12.5px;letter-spacing:.04em;margin-top:4px}
.spec-row .spec-val{font-size:14.6px;color:var(--ink-2)}
.spec-row .spec-note{font-size:14px;color:var(--muted)}
/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;gap:20px;padding-left:26px}
.timeline::before{
 content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
 background:linear-gradient(180deg,var(--brand),rgba(229,68,31,.15));
 border-radius:2px;
}
.timeline li{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;box-shadow:var(--sh-1)}
.timeline li::before{
 content:"";position:absolute;left:-25px;top:24px;width:14px;height:14px;border-radius:50%;
 background:#fff;border:3px solid var(--brand);
}
.timeline b{display:block;color:var(--ink);font-size:16px;margin-bottom:6px}
.timeline p{color:var(--muted);font-size:14.5px}
.timeline .when{
 display:inline-block;margin-bottom:8px;font-size:12.5px;font-weight:700;
 color:var(--brand-700);background:var(--brand-soft);border-radius:var(--r-pill);padding:3px 11px;
}
/* ---------- 防护提示 ---------- */
.safety-card{
 background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);
 border-radius:var(--r);padding:22px 24px;box-shadow:var(--sh-1);height:100%;
 transition:box-shadow .2s ease,transform .2s ease;
}
.safety-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.safety-card h3{font-size:16.5px;margin-bottom:8px}
.safety-card p{color:var(--muted);font-size:14.4px}
/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px}
.faq details{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
 padding:0;box-shadow:var(--sh-1);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:#f0c6b9;box-shadow:var(--sh-2)}
.faq summary{
 list-style:none;cursor:pointer;padding:19px 56px 19px 22px;position:relative;
 font-weight:700;color:var(--ink);font-size:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
 content:"";position:absolute;right:22px;top:26px;width:10px;height:10px;
 border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
 transform:rotate(45deg);transition:transform .25s ease;
}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq summary:hover{color:var(--brand-700)}
.faq .faq-body{padding:0 22px 22px;color:var(--muted);font-size:14.8px}
/* ---------- 转化区 ---------- */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--r-lg);
 background-image:linear-gradient(120deg,rgba(14,18,26,.94),rgba(14,18,26,.72) 55%,rgba(229,68,31,.5)),url("/assets/images/e108b799387d568e.webp");
 background-size:cover;background-position:center;
 color:#fff;padding:clamp(34px,5vw,60px);
 box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.cta-band p{color:#dbe2ed;max-width:660px;font-size:16px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
/* ---------- 页脚 ---------- */
.site-footer{background:#111620;color:#9aa4b6;padding:clamp(46px,6vw,72px) 0 26px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-sub{color:#7b869a}
.foot-about{margin:18px 0 12px;font-size:14.4px;line-height:1.8;color:#9aa4b6}
.foot-meta{font-size:13px;color:#6f7a8d}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.site-footer ul{display:grid;gap:10px}
.site-footer ul a{color:#9aa4b6;font-size:14.4px}
.site-footer ul a:hover{color:#ffb499}
.foot-bottom{
 margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
 font-size:13px;color:#6f7a8d;
}
/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .split{grid-template-columns:1fr;gap:26px}
 .spec-row{grid-template-columns:1fr 1fr;gap:14px}
 .spec-row .spec-note{grid-column:1/-1}
 .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
 .nav-wrap{gap:14px;height:66px}
 .nav-toggle{display:grid}
 .nav-links{
  position:absolute;left:12px;right:12px;top:70px;
  flex-direction:column;align-items:stretch;gap:4px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:12px;box-shadow:var(--sh-2);
  display:none;
 }
 .nav-links.is-open{display:flex}
 .nav-links a{padding:12px 14px;border-radius:var(--r-sm)}
 .nav-cta{margin-left:0;text-align:center;justify-content:center}
 .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
 .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .spec-row{grid-template-columns:1fr;gap:8px}
 .card{padding:22px}
 .panel{padding:22px}
 .foot-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
 .hero-stats{grid-template-columns:1fr}
 .page-hero h1{font-size:26px}
 .btn{width:100%;justify-content:center}
 .cta-band .cta-actions{flex-direction:column}
 .faq summary{font-size:15px;padding-right:48px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}