/* roulang page: index */
:root{
  --brand:#FF5C39;
  --brand-dark:#D93E1F;
  --brand-soft:rgba(255,92,57,.12);
  --ink:#232733;
  --lime:#C9F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E6E1D8;
  --text:#1A1C1F;
  --text-2:#5A6069;
  --text-3:#8E939C;
  --ok:#0FA37F;
  --warn:#E0483C;
  --r-card:16px;
  --r-btn:999px;
  --r-input:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(20,16,10,.05);
  --sh-2:0 10px 28px -12px rgba(20,16,10,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input{font:inherit}
:focus-visible{outline:3px solid rgba(255,92,57,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
@media (max-width:768px){.container{padding:0 20px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  padding:12px 26px;border:1.5px solid transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:#b8e238;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;border-color:rgba(35,39,51,.55);color:var(--ink)}
.btn-ghost:hover{background:var(--bg-2);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-block{width:100%}

/* ---------- 链接 ---------- */
.link-lime{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:2px;
  transition:border-color .18s,color .18s;
}
.link-lime:hover{border-color:var(--brand);color:var(--brand-dark)}
.link-plain{font-size:15px;font-weight:600;color:var(--brand-dark);transition:color .18s}
.link-plain:hover{color:var(--ink)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-block;font-size:12.5px;line-height:1.6;font-weight:600;
  padding:3px 10px;border-radius:var(--r-badge);
  background:var(--brand-soft);color:var(--brand-dark);
}
.badge-ink{background:rgba(35,39,51,.08);color:var(--ink)}
.badge-lime{background:var(--lime);color:var(--ink)}
.badge-soft{background:var(--bg-2);color:var(--text-2);font-weight:500}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,241,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(20,16,10,.45)}
.nav{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand__mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:13.5px;letter-spacing:.02em;
  box-shadow:0 6px 14px -8px rgba(255,92,57,.9);
}
.brand__name{font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.01em}
.nav__menu{display:flex;align-items:center;gap:26px;margin-left:10px}
.nav__link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .18s}
.nav__link::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);
  border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav__link:hover{color:var(--ink)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--ink);font-weight:700}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:8px 14px;min-width:230px;
  transition:border-color .18s,box-shadow .18s;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,92,57,.14)}
.nav-search input{border:0;outline:0;background:transparent;font-size:14px;width:100%;color:var(--text)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search svg{flex-shrink:0;color:var(--text-3)}
.nav-login{font-size:15px;color:var(--text-2);transition:color .18s}
.nav-login:hover{color:var(--brand-dark)}
.nav-burger{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:#fff;flex-direction:column;gap:4px;align-items:center;justify-content:center;
}
.nav-burger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-burger.is-open span:nth-child(2){opacity:0}
.nav-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{display:none;background:#fff;border-top:1px solid var(--line);padding:6px 20px 18px}
.mobile-drawer.is-open{display:block}
.mobile-link{display:block;padding:15px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--text-2)}
.mobile-link:last-child{border-bottom:0}
.mobile-link.is-active{color:var(--brand-dark);font-weight:700}
@media (max-width:1023px){
  .nav__menu,.nav-search,.nav-login{display:none}
  .nav-burger{display:flex}
  .nav{gap:12px}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important}
}
@media (max-width:520px){
  .brand__name{font-size:15px}
}

/* ---------- 区块通用 ---------- */
.section{padding:92px 0}
.section-tight{padding:64px 0}
@media (max-width:768px){
  .section{padding:58px 0}
  .section-tight{padding:44px 0}
}
.section-head{margin-bottom:40px;max-width:760px}
.section-eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-dark);margin-bottom:12px;
}
.section-title{
  position:relative;padding-left:16px;font-size:30px;line-height:1.3;font-weight:700;
}
.section-title::before{
  content:'';position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--brand);border-radius:2px;
}
.section-desc{margin-top:14px;font-size:15.5px;color:var(--text-2);padding-left:16px;max-width:720px}
@media (max-width:768px){
  .section-title{font-size:23px}
  .section-desc{font-size:15px}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 84px;background:linear-gradient(180deg,#FBF9F5 0%,var(--bg) 100%)}
.hero::before{
  content:'';position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,92,57,.14) 0%,rgba(255,92,57,0) 68%);
  pointer-events:none;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:7px 15px;margin-bottom:20px;box-shadow:var(--sh-1);
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:block}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;letter-spacing:-.02em;max-width:640px}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{
  margin-top:44px;display:flex;flex-wrap:wrap;gap:36px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{
  font-size:28px;font-weight:800;color:var(--ink);line-height:1.2;
  font-variant-numeric:tabular-nums;font-family:"SFMono-Regular",Consolas,monospace;
}
.hero-stats span{font-size:14px;color:var(--text-3)}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;background:var(--bg-2);
  aspect-ratio:16/12;box-shadow:var(--sh-2);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hero-visual:hover img{transform:scale(1.03)}
.hero-visual::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(35,39,51,.12) 0%,rgba(35,39,51,.42) 55%,rgba(35,39,51,.82) 100%);
}
.hero-visual__caption{position:absolute;left:24px;right:24px;bottom:22px;z-index:2;color:#fff}
.hero-visual__caption strong{display:block;font-size:17px;font-weight:700}
.hero-visual__caption span{display:block;font-size:13.5px;color:rgba(255,255,255,.78);margin-top:4px}
@media (max-width:1023px){
  .hero{padding:48px 0 60px}
  .hero h1{font-size:34px}
}
@media (max-width:640px){
  .hero h1{font-size:27px;line-height:1.35}
  .hero-sub{font-size:15.5px}
  .hero-stats{gap:24px}
  .hero-stats strong{font-size:24px}
}

/* ---------- 信任条 ---------- */
.trust-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:26px 0}
.trust-item{display:flex;align-items:center;gap:14px}
.trust-item__icon{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  background:var(--bg-2);color:var(--brand-dark);font-weight:800;font-size:15px;
}
.trust-item strong{display:block;font-size:15.5px;color:var(--ink);font-weight:700}
.trust-item span{display:block;font-size:13.5px;color:var(--text-2);line-height:1.6}
@media (max-width:768px){
  .trust-grid{grid-template-columns:1fr;gap:16px;padding:20px 0}
}

/* ---------- 功能分组卡片 ---------- */
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.feature-card:hover{border-color:rgba(255,92,57,.35);box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.feature-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.feature-card:hover .feature-card__media img{transform:scale(1.03)}
.feature-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.feature-num{
  font-family:"SFMono-Regular",Consolas,monospace;font-size:13px;font-weight:700;
  color:var(--brand-dark);letter-spacing:.06em;
}
.feature-title{font-size:21px;line-height:1.4;font-weight:700}
.feature-text{font-size:15px;color:var(--text-2);line-height:1.8}
.feature-card--lg .feature-card__body{padding:28px}
.feature-card--lg .feature-title{font-size:23px}
.feature-card--wide{flex-direction:row;align-items:stretch}
.feature-card--wide .feature-card__media{width:42%;aspect-ratio:auto;flex-shrink:0}
.feature-card--wide .feature-card__body{width:58%}
@media (max-width:767px){
  .feature-card--wide{flex-direction:column}
  .feature-card--wide .feature-card__media{width:100%;aspect-ratio:16/9}
  .feature-card--wide .feature-card__body{width:100%}
}

/* ---------- 使用场景 ---------- */
.scene-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.scene-tab{
  border:1.5px solid var(--line);background:#fff;border-radius:var(--r-btn);
  padding:9px 22px;font-size:14.5px;color:var(--text-2);font-weight:600;
  transition:all .18s ease;
}
.scene-tab:hover{border-color:rgba(255,92,57,.5);color:var(--ink)}
.scene-tab.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.scene-panel{display:none}
.scene-panel.is-active{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.scene-panel__media{
  border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);
  aspect-ratio:16/11;box-shadow:var(--sh-1);
}
.scene-panel__media img{width:100%;height:100%;object-fit:cover}
.scene-panel h3{font-size:24px;line-height:1.4;margin-bottom:14px}
.scene-panel p{font-size:15.5px;color:var(--text-2);margin-bottom:18px}
.check-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:15px;color:var(--text)}
.check-list li::before{
  content:'✓';flex-shrink:0;width:20px;height:20px;border-radius:6px;margin-top:6px;
  background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:800;
  display:grid;place-items:center;line-height:1;
}
@media (max-width:768px){
  .scene-panel.is-active{grid-template-columns:1fr;gap:24px}
  .scene-panel h3{font-size:20px}
}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.case-hero{
  position:relative;border-radius:var(--r-card);overflow:hidden;min-height:340px;
  display:flex;align-items:flex-end;background:var(--ink);
}
.case-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.case-hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(35,39,51,.15) 0%,rgba(35,39,51,.78) 100%);
}
.case-hero__body{position:relative;z-index:2;padding:32px;color:#fff}
.case-hero__body blockquote{margin:14px 0 0;font-size:20px;line-height:1.6;font-weight:600;max-width:520px}
.case-hero__body small{display:block;margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.7)}
.case-side{display:flex;flex-direction:column;gap:24px}
.case-mini{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;flex:1;display:flex;flex-direction:column;gap:12px;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.case-mini:hover{border-color:rgba(255,92,57,.35);box-shadow:var(--sh-2);transform:translateY(-2px)}
.case-mini h3{font-size:17.5px;line-height:1.5}
.case-mini p{font-size:14.5px;color:var(--text-2)}
@media (max-width:900px){
  .case-grid{grid-template-columns:1fr}
  .case-hero{min-height:280px}
}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;display:flex;flex-direction:column;gap:18px;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.price-card:hover{border-color:rgba(255,92,57,.35);box-shadow:var(--sh-2);transform:translateY(-2px)}
.price-card--dark{background:var(--ink);border-color:var(--ink);color:#fff}
.price-card--dark:hover{transform:translateY(-4px)}
.price-card--dark h3,.price-card--dark .price-amount,.price-card--dark .price-name{color:#fff}
.price-card--dark .price-desc,.price-card--dark .price-cycle{color:rgba(255,255,255,.68)}
.price-card--dark .price-list li{color:rgba(255,255,255,.9)}
.price-card--dark .price-list li::before{background:rgba(201,242,77,.22);color:var(--lime)}
.price-flag{
  position:absolute;top:-12px;right:24px;background:var(--lime);color:var(--ink);
  font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:var(--r-badge);
}
.price-name{font-size:16px;font-weight:700;color:var(--ink)}
.price-desc{font-size:14px;color:var(--text-2);line-height:1.7}
.price-amount{
  font-family:"SFMono-Regular",Consolas,monospace;font-size:38px;font-weight:800;
  line-height:1.1;color:var(--ink);font-variant-numeric:tabular-nums;
}
.price-amount em{font-size:15px;font-style:normal;font-weight:600;margin-right:2px}
.price-cycle{font-size:13.5px;color:var(--text-3)}
.price-list{margin-top:4px;display:flex;flex-direction:column;gap:2px}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);padding:7px 0}
.price-list li::before{
  content:'✓';flex-shrink:0;width:18px;height:18px;border-radius:5px;margin-top:5px;
  background:var(--brand-soft);color:var(--brand-dark);font-size:11px;font-weight:800;
  display:grid;place-items:center;line-height:1;
}
.price-card .btn{margin-top:auto}
@media (max-width:1023px){
  .price-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.news-card:hover{border-color:rgba(255,92,57,.35);box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-card__cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-card__cover img{transform:scale(1.03)}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{font-size:17px;line-height:1.55;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__title a:hover{color:var(--brand-dark)}
.news-card__desc{
  font-size:14.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--text-3);
}
.news-card__meta a{color:var(--brand-dark);font-weight:600}
.news-card__meta a:hover{color:var(--ink)}
.news-empty{
  grid-column:1/-1;border:1.5px dashed var(--line);border-radius:var(--r-card);
  background:#fff;padding:48px 24px;text-align:center;color:var(--text-2);
}
.news-empty strong{display:block;font-size:17px;color:var(--ink);margin-bottom:8px}
.news-empty .btn{margin-top:20px}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .18s;
}
.faq-question:hover{color:var(--brand-dark)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;background:var(--bg-2);
  display:grid;place-items:center;font-size:16px;font-weight:700;color:var(--ink);
  transition:background .2s,color .2s,transform .2s;
}
.faq-item.is-open .faq-icon{background:var(--lime);color:var(--ink);transform:rotate(45deg)}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}
.faq-item.is-open .faq-panel{grid-template-rows:1fr}
.faq-panel__inner{overflow:hidden}
.faq-panel__inner p{padding:0 46px 22px 0;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;background:var(--ink);color:#fff;border-radius:20px;overflow:hidden;
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  min-height:200px;
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;pointer-events:none;
}
.cta-band__text{position:relative;z-index:2;max-width:620px}
.cta-band__text h2{color:#fff;font-size:28px;line-height:1.35}
.cta-band__text p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.75)}
.cta-band .btn{position:relative;z-index:2;flex-shrink:0}
@media (max-width:768px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 24px}
  .cta-band__text h2{font-size:22px}
  .cta-band .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.75);margin-top:92px;position:relative}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand__mark{box-shadow:none}
.footer-brand span{color:#fff;font-weight:800;font-size:17px}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color .18s,transform .18s;display:inline-block}
.footer-col a:hover{color:var(--lime);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.footer-beian{min-height:18px}
@media (max-width:900px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:560px){
  .footer-top{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
    --brand:#FF5C39;
    --brand-dark:#D93E1F;
    --ink:#232733;
    --ink-deep:#1A1C1F;
    --lime:#C9F24D;
    --lime-soft:#E4FB9B;
    --bg:#F7F5F1;
    --bg-2:#EFEBE4;
    --card:#FFFFFF;
    --line:#E6E1D8;
    --text:#1A1C1F;
    --text-2:#5A6069;
    --text-3:#8E939C;
    --ok:#0FA37F;
    --warn:#E0483C;
    --r-sm:6px;
    --r-md:12px;
    --r-lg:16px;
    --r-xl:20px;
    --pill:999px;
    --sh-1:0 1px 2px rgba(20,16,10,.05);
    --sh-2:0 10px 28px -12px rgba(20,16,10,.18);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(247,245,241,.9);
    -webkit-backdrop-filter:saturate(160%) blur(10px);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(20,16,10,.35)}
  .nav{display:flex;align-items:center;gap:28px;height:64px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand__mark{
    width:34px;height:34px;border-radius:10px;
    background:var(--brand);color:#fff;
    display:grid;place-items:center;
    font-weight:800;font-size:13px;letter-spacing:.6px;
    font-family:Inter,system-ui,sans-serif;
    box-shadow:0 6px 14px -8px rgba(255,92,57,.9);
  }
  .brand__name{font-size:17px;font-weight:800;color:var(--ink);white-space:nowrap;letter-spacing:.2px}
  .nav__menu{display:flex;align-items:center;gap:24px}
  .nav__link{
    position:relative;font-size:15px;color:var(--text-2);padding:4px 0;
    transition:color .18s var(--ease);
  }
  .nav__link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--lime);transform:scaleX(0);transform-origin:left;
    transition:transform .2s var(--ease);border-radius:2px;
  }
  .nav__link:hover{color:var(--ink)}
  .nav__link:hover::after{transform:scaleX(1)}
  .nav__link.is-active{color:var(--ink);font-weight:700}
  .nav__link.is-active::after{transform:scaleX(1);background:var(--brand)}
  .nav__right{margin-left:auto;display:flex;align-items:center;gap:14px}
  .nav-search{
    display:flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--line);border-radius:var(--pill);
    padding:7px 14px;width:236px;color:var(--text-3);
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,92,57,.16)}
  .nav-search input{
    border:0;outline:0;background:transparent;width:100%;font-size:13.5px;color:var(--text);
  }
  .nav-search input::placeholder{color:var(--text-3)}
  .nav-login{font-size:15px;color:var(--text-2);transition:color .18s var(--ease)}
  .nav-login:hover{color:var(--brand-dark)}
  .nav-burger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;place-items:center;gap:4px}
  .nav-burger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
  .nav-burger:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--pill);font-weight:700;font-size:15px;
    padding:12px 26px;border:1.5px solid transparent;cursor:pointer;
    transition:transform .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  }
  .btn:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -12px rgba(255,92,57,.95)}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
  .btn-outline:hover{background:var(--bg-2);transform:translateY(-1px)}
  .btn-lime{background:var(--lime);color:var(--ink)}
  .btn-lime:hover{background:var(--lime-soft);transform:translateY(-1px)}
  .btn-sm{padding:9px 18px;font-size:14px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:2px;transition:color .18s var(--ease)}
  .link-arrow:hover{color:var(--brand-dark);border-bottom-color:var(--brand)}

  /* ---------- article hero ---------- */
  .article-hero{
    background:linear-gradient(180deg,#EFEBE4 0%,#F7F5F1 100%);
    border-bottom:1px solid var(--line);
    padding:34px 0 46px;
  }
  .crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
  .crumbs a{transition:color .18s var(--ease)}
  .crumbs a:hover{color:var(--brand-dark)}
  .crumbs .sep{color:#C7C0B4}
  .crumbs .current{color:var(--ink);font-weight:700}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12.5px;font-weight:700;border-radius:var(--r-sm);
    padding:4px 10px;background:rgba(255,92,57,.12);color:var(--brand-dark);
  }
  .badge-ink{background:var(--ink);color:#fff}
  .badge-soft{background:var(--bg-2);color:var(--text-2)}
  .article-title{
    margin:18px 0 0;font-size:38px;line-height:1.32;font-weight:800;
    color:var(--ink-deep);letter-spacing:-.2px;max-width:880px;
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;font-size:13.5px;color:var(--text-3)}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7C0B4}
  .meta-strong{color:var(--text-2);font-weight:600}

  /* ---------- article body ---------- */
  .article-section{padding:52px 0 8px}
  .article-shell{max-width:880px;margin:0 auto}
  .article-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
    padding:44px 52px;box-shadow:var(--sh-1);
  }
  .article-content{font-size:16.5px;line-height:1.85;color:var(--text)}
  .article-content h2{
    position:relative;font-size:26px;line-height:1.35;font-weight:700;color:var(--ink-deep);
    margin:2em 0 .6em;padding-left:16px;
  }
  .article-content h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:3px;background:var(--brand)}
  .article-content h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink-deep);margin:1.6em 0 .5em}
  .article-content h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .4em}
  .article-content p{margin:0 0 16px}
  .article-content strong{color:var(--ink-deep);font-weight:700}
  .article-content a{color:var(--brand-dark);text-decoration:underline;text-decoration-color:rgba(255,92,57,.4);text-underline-offset:3px}
  .article-content a:hover{text-decoration-color:var(--brand-dark)}
  .article-content blockquote{
    margin:24px 0;padding:14px 22px;background:var(--bg-2);
    border-left:4px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;
    color:var(--text-2);
  }
  .article-content blockquote p:last-child{margin-bottom:0}
  .article-content ul,.article-content ol{margin:0 0 18px;padding-left:0;list-style:none}
  .article-content ul li,.article-content ol li{position:relative;padding-left:22px;margin:8px 0;line-height:1.8}
  .article-content ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand)}
  .article-content ol{counter-reset:alist}
  .article-content ol li{counter-increment:alist}
  .article-content ol li::before{
    content:counter(alist);position:absolute;left:0;top:.28em;
    width:16px;height:16px;border-radius:5px;background:var(--ink);color:#fff;
    font-size:11px;line-height:16px;text-align:center;font-weight:700;
  }
  .article-content img{border-radius:var(--r-md);margin:26px auto;width:100%;height:auto}
  .article-content figure{margin:26px 0}
  .article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
  .article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
  .article-content th{background:var(--bg-2);color:var(--ink-deep);font-weight:700;text-align:left}
  .article-content th,.article-content td{padding:11px 14px;border-bottom:1px solid var(--line)}
  .article-content tr:last-child td{border-bottom:0}
  .article-content hr{border:0;border-top:1px solid var(--line);margin:32px 0}

  .inline-cta{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
    background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:20px 24px;margin:34px 0 0;
  }
  .inline-cta p{margin:0;font-size:15px;font-weight:600;color:var(--ink)}
  .inline-cta span{display:block;font-size:13.5px;font-weight:400;color:var(--text-2);margin-top:2px}

  .empty-state{
    border:1.5px dashed #D6CFC2;border-radius:var(--r-lg);background:#FFFDFA;
    padding:52px 28px;text-align:center;
  }
  .empty-state .icon{
    width:52px;height:52px;border-radius:16px;background:rgba(255,92,57,.12);
    color:var(--brand-dark);display:grid;place-items:center;margin:0 auto 16px;
  }
  .empty-state h2{font-size:20px;font-weight:700;color:var(--ink-deep);margin:0 0 8px}
  .empty-state p{font-size:15px;color:var(--text-2);margin:0 0 20px}

  /* ---------- related ---------- */
  .section{padding:72px 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
  .section-kicker{font-size:13px;font-weight:800;letter-spacing:2px;color:var(--brand-dark);text-transform:uppercase;margin:0 0 8px}
  .section-title{margin:0;font-size:29px;line-height:1.3;font-weight:700;color:var(--ink-deep)}
  .section-sub{margin:10px 0 0;font-size:15px;color:var(--text-2);max-width:640px}

  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .card{
    display:flex;flex-direction:column;background:var(--card);
    border:1px solid var(--line);border-radius:var(--r-lg);
    overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,92,57,.3)}
  .card__cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
  .card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
  .card:hover .card__cover img{transform:scale(1.03)}
  .card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card__title{margin:0;font-size:17px;line-height:1.5;font-weight:700;color:var(--ink-deep)}
  .card__text{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.75}
  .card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);padding-top:6px}

  .back-bar{display:flex;justify-content:center;margin-top:34px}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    list-style:none;cursor:pointer;padding:22px 4px;
    font-size:17px;font-weight:600;color:var(--ink-deep);
    transition:color .18s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand-dark)}
  .faq-item summary:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:-2px;border-radius:8px}
  .faq-sign{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;
    background:var(--bg-2);color:var(--ink);display:grid;place-items:center;
    font-size:15px;font-weight:700;line-height:1;transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .faq-item[open] .faq-sign{background:var(--brand);color:#fff;transform:rotate(45deg)}
  .faq-body{padding:0 4px 24px;font-size:15.5px;color:var(--text-2);max-width:760px}

  /* ---------- cta band ---------- */
  .cta-band{
    position:relative;overflow:hidden;background:var(--ink);color:#fff;
    border-radius:var(--r-xl);padding:46px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    border:1px solid rgba(255,255,255,.12);
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
    background-size:18px 18px;opacity:.5;pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:1}
  .cta-band h2{margin:0 0 10px;font-size:27px;line-height:1.35;font-weight:700;color:#fff}
  .cta-band p{margin:0;font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:80px;border-top:1px solid rgba(255,255,255,.12)}
  .footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:60px 0 40px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16.5px;margin-bottom:14px}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0;max-width:330px}
  .footer-col h3{margin:0 0 16px;font-size:15px;font-weight:700;color:#fff}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
  .footer-col a:hover{color:var(--lime);transform:translateX(2px)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
  }
  .footer-beian{min-width:60px;height:14px;display:inline-block}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px}
    .nav__menu{
      display:none;position:fixed;left:0;right:0;top:64px;bottom:0;
      background:#fff;flex-direction:column;align-items:stretch;gap:0;
      padding:8px 24px;overflow-y:auto;
    }
    .nav__menu.is-open{display:flex}
    .nav__link{font-size:16px;padding:0 4px;height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
    .nav__link::after{display:none}
    .nav__link.is-active{color:var(--brand-dark)}
    .nav-search{display:none}
    .nav-burger{display:grid}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-top{grid-template-columns:1fr 1fr;gap:32px}
    .article-title{font-size:32px}
    .article-card{padding:34px 30px}
    .section{padding:56px 0}
  }
  @media (max-width:767px){
    .brand__name{font-size:15.5px}
    .nav-login{display:none}
    .article-hero{padding:24px 0 34px}
    .article-title{font-size:26px}
    .article-card{padding:26px 20px;border-radius:var(--r-lg)}
    .article-content{font-size:16px}
    .article-content h2{font-size:22px}
    .article-content h3{font-size:18px}
    .article-content table{display:block;overflow-x:auto;white-space:nowrap}
    .section-title{font-size:23px}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .inline-cta{flex-direction:column;align-items:flex-start}
    .footer-top{grid-template-columns:1fr;padding:44px 0 30px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (max-width:520px){
    .container{padding:0 18px}
    .card-grid{grid-template-columns:1fr}
  }

/* roulang page: category1 */
:root{
  --brand:#FF5C39;
  --brand-dark:#D93E1F;
  --brand-soft:rgba(255,92,57,.12);
  --ink:#232733;
  --ink-deep:#1A1C1F;
  --lime:#C9F24D;
  --bg:#F7F5F1;
  --bg-alt:#EFEBE4;
  --card:#FFFFFF;
  --line:#E6E1D8;
  --text:#1A1C1F;
  --text-2:#5A6069;
  --text-3:#8E939C;
  --success:#0FA37F;
  --warn:#E0483C;
  --r-pill:999px;
  --r-card:16px;
  --r-input:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(20,16,10,.05);
  --sh-2:0 10px 28px -12px rgba(20,16,10,.18);
  --dur:.2s;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
svg{flex:none;}

body .container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

.h1{font-size:clamp(30px,3.6vw,48px);line-height:1.24;font-weight:800;letter-spacing:-.5px;color:var(--ink-deep);}
.h2{font-size:clamp(24px,2.4vw,31px);line-height:1.32;font-weight:700;color:var(--ink-deep);}
.h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink-deep);}

.section{padding:88px 0;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--ink);color:#fff;}

.section-head{max-width:760px;margin-bottom:40px;}
.section-head__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;}
.section-head__bar{display:inline-block;width:3px;height:16px;background:var(--brand);border-radius:2px;}
.section-head__title{margin-top:12px;}
.section-sub{margin-top:12px;color:var(--text-2);font-size:16px;max-width:720px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,241,.9);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) ease-out;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(20,16,10,.45);}
.nav{
  max-width:1200px;margin:0 auto;padding:0 40px;height:64px;
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand__mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand__name{font-size:16px;font-weight:700;color:var(--ink-deep);white-space:nowrap;}
.nav__menu{display:flex;align-items:center;gap:26px;}
.nav__link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;transition:color var(--dur) ease-out;}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) ease-out;
}
.nav__link:hover{color:var(--ink);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--ink-deep);font-weight:700;}
.nav__link.is-active::after{transform:scaleX(1);}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:8px 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-pill);color:var(--text-3);
  transition:border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.nav-search input{border:0;outline:none;background:transparent;width:180px;font-size:14px;color:var(--text);}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,92,57,.16);}
.nav-login{font-size:15px;color:var(--text-2);transition:color var(--dur) ease-out;}
.nav-login:hover{color:var(--ink);}
.nav-burger{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-burger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--dur) ease-out,opacity var(--dur) ease-out;}
.nav-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger.is-open span:nth-child(2){opacity:0;}
.nav-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-drawer{
  display:none;position:fixed;left:0;right:0;top:64px;bottom:0;background:#fff;z-index:55;
  padding:8px 20px 40px;overflow-y:auto;
}
.nav-drawer.is-open{display:block;}
.nav-drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink);
}
.nav-drawer__link.is-active{color:var(--brand);font-weight:700;}
.nav-drawer__cta{margin-top:24px;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;font-size:15px;line-height:1;
  transition:transform var(--dur) ease-out,background-color var(--dur) ease-out,box-shadow var(--dur) ease-out,color var(--dur) ease-out,border-color var(--dur) ease-out;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;padding:14px 28px;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:var(--brand-dark);}
.btn-lime{background:var(--lime);color:var(--ink);padding:12px 24px;}
.btn-lime:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink);padding:12.5px 26px;background:transparent;}
.btn-ghost:hover{background:var(--bg-alt);}
.btn-ghost--light{border-color:rgba(255,255,255,.34);color:#fff;}
.btn-ghost--light:hover{background:rgba(255,255,255,.1);}
.btn:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:2px;transition:gap var(--dur) ease-out;}
.link-arrow:hover{gap:10px;}
.link-arrow--light{color:#fff;border-bottom-color:var(--lime);}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-badge);}
.badge--brand{background:var(--brand-soft);color:var(--brand-dark);}
.badge--neutral{background:var(--bg-alt);color:var(--text-2);}
.badge--lime{background:var(--lime);color:var(--ink);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:24px 0 0;}
.breadcrumb a{color:var(--text-3);transition:color var(--dur) ease-out;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb__current{color:var(--ink);font-weight:700;}

/* ---------- Hero ---------- */
.cat-hero{padding:32px 0 72px;}
.cat-hero__grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;}
.cat-hero__title{margin-top:18px;}
.cat-hero__lead{margin-top:16px;font-size:17px;color:var(--text-2);max-width:520px;}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cat-hero__media{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-2);}
.cat-hero__media img{width:100%;height:340px;object-fit:cover;}
.cat-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(35,39,51,.05) 0%,rgba(35,39,51,.42) 100%);
}
.cat-hero__media-tag{
  position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.stat-row{display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.stat{min-width:96px;}
.stat__num{display:block;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:26px;font-weight:700;color:var(--ink-deep);line-height:1.2;}
.stat__label{display:block;font-size:13.5px;color:var(--text-3);margin-top:4px;}

/* ---------- 要点横带 ---------- */
.quick-strip{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.quick-strip__inner{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:26px 0;}
.quick-item{display:flex;align-items:center;gap:12px;}
.quick-item__icon{
  width:38px;height:38px;border-radius:12px;background:#fff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;border:1px solid var(--line);
}
.quick-item__text{font-size:15px;font-weight:600;color:var(--ink);}

/* ---------- 锚点目录 + 图文分组 ---------- */
.layout-anchor{display:grid;grid-template-columns:248px minmax(0,1fr);gap:56px;align-items:start;}
.anchor-card{
  position:sticky;top:96px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
}
.anchor-card__title{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em;}
.anchor-list{margin-top:14px;display:flex;flex-direction:column;gap:4px;}
.anchor-list a{
  display:block;padding:10px 12px;border-radius:10px;font-size:15px;color:var(--text-2);
  border-left:2px solid transparent;transition:background-color var(--dur) ease-out,color var(--dur) ease-out,border-color var(--dur) ease-out;
}
.anchor-list a:hover{background:var(--bg-alt);color:var(--ink);}
.anchor-list a.is-current{background:var(--bg-alt);color:var(--ink-deep);font-weight:700;border-left-color:var(--brand);}
.anchor-card__btn{width:100%;margin-top:18px;}

.group-block{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--line);}
.group-block:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0;}
.group-index{
  display:inline-block;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin-bottom:10px;
}
.group-block__text{max-width:760px;margin-top:14px;color:var(--text-2);}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;max-width:760px;}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15.5px;color:var(--text);}
.check-list .tick{
  width:20px;height:20px;border-radius:6px;background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;flex:none;margin-top:5px;
}
.group-media{margin-top:26px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}
.group-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease-out;}
.group-media:hover img{transform:scale(1.03);}

/* ---------- 场景切换 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.tab{
  padding:9px 20px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:14.5px;color:var(--text-2);transition:all var(--dur) ease-out;
}
.tab:hover{border-color:var(--brand);color:var(--brand-dark);}
.tab.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600;}
.tab:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px;}
.scene-panel{display:none;}
.scene-panel.is-active{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center;}
.scene-panel__media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;}
.scene-panel__media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.scene-panel__desc{margin-top:14px;color:var(--text-2);max-width:620px;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,92,57,.3);}
.step__num{
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:13px;font-weight:700;
  color:var(--brand);letter-spacing:.06em;
}
.step__title{margin-top:10px;font-size:18px;font-weight:600;color:var(--ink-deep);}
.step__text{margin-top:8px;font-size:14.5px;color:var(--text-2);}

/* ---------- 卡片网格（辅助信息） ---------- */
.info-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;}
.info-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(255,92,57,.3);}
.info-card--wide{padding:28px;}
.info-card__text{margin-top:10px;font-size:15px;color:var(--text-2);}
.info-card__link{margin-top:16px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink-deep);
  transition:color var(--dur) ease-out;
}
.faq-q:hover{color:var(--brand-dark);}
.faq-q:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px;}
.faq-icon{position:relative;width:18px;height:18px;flex:none;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .22s ease-out,opacity .22s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item.is-open .faq-icon::before{background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a p{padding:0 0 22px;font-size:15.5px;color:var(--text-2);max-width:760px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--ink);color:#fff;border-radius:20px;overflow:hidden;
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;
  background-image:radial-gradient(rgba(201,242,77,.35) 1.4px,transparent 1.4px);
  background-size:14px 14px;opacity:.55;pointer-events:none;
}
.cta-band__title{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.32;}
.cta-band__text{margin-top:12px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:560px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}
.back-home{display:flex;justify-content:center;margin-top:40px;}

/* ---------- 深色说明条 ---------- */
.dark-note{background:var(--ink);color:#fff;border-radius:20px;padding:40px 44px;display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.dark-note__item{border-left:2px solid rgba(255,255,255,.14);padding-left:20px;}
.dark-note__item h3{margin:0 0 8px;font-size:18px;font-weight:600;}
.dark-note__item p{color:rgba(255,255,255,.7);font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.12);margin-top:88px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;}
.footer-desc{margin-top:16px;font-size:14.5px;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color var(--dur) ease-out,transform var(--dur) ease-out;display:inline-block;}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 32px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-beian{min-height:16px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  body .container{padding:0 32px;}
  .nav{padding:0 32px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  body .container{padding:0 24px;}
  .nav{padding:0 24px;height:60px;}
  .nav__menu,.nav-search,.nav-login{display:none;}
  .nav-burger{display:flex;}
  .nav-drawer{top:60px;}
  .cat-hero{padding:20px 0 56px;}
  .cat-hero__grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero__media img{height:260px;}
  .cat-hero__lead{max-width:none;}
  .quick-strip__inner{grid-template-columns:1fr;gap:16px;padding:22px 0;}
  .layout-anchor{grid-template-columns:1fr;gap:32px;}
  .anchor-card{position:static;}
  .anchor-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-list a{border-left:0;border-bottom:2px solid transparent;border-radius:8px;}
  .anchor-list a.is-current{border-left:0;border-bottom-color:var(--brand);}
  .scene-panel.is-active{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:20px;}
  .info-grid{grid-template-columns:1fr 1fr;}
  .info-card--wide{grid-column:1 / -1;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .dark-note{grid-template-columns:1fr;padding:32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media (max-width:639px){
  body{font-size:15.5px;}
  body .container{padding:0 20px;}
  .nav{padding:0 20px;}
  .brand__name{font-size:15px;}
  .section{padding:56px 0;}
  .cat-hero__title{font-size:29px;}
  .cat-hero__media img{height:210px;}
  .stat-row{gap:24px;}
  .steps{grid-template-columns:1fr;}
  .info-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;}
  .cta-band__actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --brand:#FF5C39;
  --brand-dark:#D93E1F;
  --ink:#232733;
  --lime:#C9F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E6E1D8;
  --text:#1A1C1F;
  --muted:#5A6069;
  --faint:#8E939C;
  --ok:#0FA37F;
  --warn:#E0483C;
  --r-card:16px;
  --r-input:12px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,16,10,.05);
  --sh-2:0 10px 28px -12px rgba(20,16,10,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
::selection{background:rgba(255,92,57,.2);}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(255,92,57,.35);
  border-radius:8px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,241,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(20,16,10,.4);}

.nav{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  letter-spacing:.2px;
  color:var(--ink);
  flex:none;
}
.brand__mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:800;
  letter-spacing:.5px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.brand__name{white-space:nowrap;}

.nav__menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:10px;
}
.nav__link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--muted);
  border-radius:8px;
  transition:color .18s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  background:var(--lime);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav__link:hover{color:var(--ink);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--ink);font-weight:700;}
.nav__link.is-active::after{background:var(--ink);transform:scaleX(1);}

.nav__right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:238px;
  padding:7px 14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--faint);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-search input{
  width:100%;
  border:0;
  background:transparent;
  font-size:13px;
  color:var(--text);
}
.nav-search input::placeholder{color:var(--faint);}
.nav-search input:focus{outline:none;box-shadow:none;}
.nav-search:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(255,92,57,.15);
}
.nav-login{
  font-size:14px;
  color:var(--ink);
  padding:8px 4px;
  transition:color .18s var(--ease);
}
.nav-login:hover{color:var(--brand);}

.nav-burger{
  display:none;
  width:40px;
  height:40px;
  border-radius:10px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  border:1px solid var(--line);
  background:var(--card);
}
.nav-burger span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-burger.is-open span:nth-child(2){opacity:0;}
.nav-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:var(--brand-dark);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--bg-2);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{background:#bde83b;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-lime:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

.link-more{
  display:inline-block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid var(--lime);
  padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.link-more:hover{color:var(--brand);border-color:var(--brand);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section--tight{padding:56px 0 0;}
.section--alt{background:var(--bg-2);}
.sec-head{margin-bottom:40px;max-width:780px;}
.sec-kicker{
  display:inline-block;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--brand);
  margin-bottom:10px;
}
.sec-title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:30px;
  font-weight:700;
  line-height:1.3;
  color:var(--ink);
  letter-spacing:-.3px;
}
.sec-title::before{
  content:"";
  flex:none;
  width:4px;
  height:26px;
  border-radius:2px;
  background:var(--brand);
}
.sec-desc{
  margin-top:14px;
  font-size:16px;
  color:var(--muted);
  max-width:720px;
}

/* ============ 面包屑与首屏 ============ */
.page-head{padding:44px 0 0;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--faint);
  margin-bottom:22px;
}
.crumb a{transition:color .18s var(--ease);}
.crumb a:hover{color:var(--brand);}
.crumb strong{color:var(--ink);font-weight:700;}

.head-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:44px;
  align-items:center;
}
.head-title{
  font-size:clamp(28px,4.1vw,48px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.8px;
  color:var(--ink);
}
.head-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--muted);
  max-width:520px;
}
.head-actions{
  margin-top:30px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.head-media{
  position:relative;
  height:250px;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--bg-2);
}
.head-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.head-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(247,245,241,.10) 0%,rgba(35,39,51,.34) 100%);
}
.head-tag{
  position:absolute;
  left:20px;
  bottom:20px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,.92);
  color:var(--ink);
  font-size:13px;
  font-weight:600;
}
.head-tag i{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--ok);
  display:block;
}

/* 提示横带 */
.tipband{
  margin-top:48px;
  background:var(--bg-2);
  border-radius:var(--r-card);
  padding:22px 28px;
  display:flex;
  flex-wrap:wrap;
  gap:16px 40px;
}
.tipband__item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  color:var(--ink);
  font-weight:600;
}
.tipband__dot{
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--card);
  color:var(--brand-dark);
  display:grid;
  place-items:center;
  font-size:12px;
  font-weight:800;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ============ 内容卡网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(255,92,57,.32);
  box-shadow:var(--sh-2);
}
.card__thumb{
  border-radius:var(--r-input);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--bg-2);
  margin-bottom:20px;
}
.card__thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .25s var(--ease);
}
.card:hover .card__thumb img{transform:scale(1.03);}
.card__icon{
  width:40px;
  height:40px;
  border-radius:10px;
  background:rgba(255,92,57,.12);
  color:var(--brand-dark);
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:800;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  margin-bottom:14px;
}
.card h3{
  font-size:20px;
  font-weight:600;
  line-height:1.4;
  color:var(--ink);
  margin-bottom:10px;
}
.card p{
  font-size:15px;
  color:var(--muted);
  margin-bottom:16px;
}

/* ============ 对比表 ============ */
.table-wrap{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow-x:auto;
  box-shadow:var(--sh-1);
}
table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
}
th,td{
  padding:16px 20px;
  text-align:left;
  font-size:14.5px;
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
thead th{
  background:var(--bg-2);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  white-space:nowrap;
}
tbody th{
  font-weight:600;
  color:var(--ink);
  background:#FBF9F6;
  white-space:nowrap;
}
td{color:var(--muted);}
tbody tr:last-child th,
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover td{background:#FDFBF8;}
.badge{
  display:inline-block;
  padding:3px 10px;
  border-radius:var(--r-badge);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.badge-brand{background:rgba(255,92,57,.12);color:var(--brand-dark);}
.badge-ok{background:rgba(15,163,127,.12);color:#0B7A5F;}
.badge-soft{background:var(--bg-2);color:var(--muted);}
.table-note{
  margin-top:16px;
  font-size:13.5px;
  color:var(--faint);
}

/* ============ 流程分栏 ============ */
.split{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:44px;
  align-items:start;
}
.split__media{
  border-radius:20px;
  overflow:hidden;
  background:var(--bg-2);
  box-shadow:var(--sh-1);
  position:sticky;
  top:96px;
}
.split__media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.step-row{
  display:flex;
  gap:18px;
  padding:20px 0;
  border-bottom:1px dashed var(--line);
}
.step-row:last-child{border-bottom:0;}
.step-badge{
  flex:none;
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--bg-2);
  color:var(--brand-dark);
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:800;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.step-row h3{
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.step-row p{
  font-size:15px;
  color:var(--muted);
}

/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--line);
  max-width:920px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:24px 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  position:relative;
  flex:none;
  width:20px;
  height:20px;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-sign::before{left:0;right:0;top:9px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s var(--ease);
}
.faq-a p{
  padding:0 44px 24px 4px;
  font-size:15.5px;
  color:var(--muted);
  max-width:760px;
}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);
  background-image:radial-gradient(rgba(255,255,255,.075) 1px,transparent 1px);
  background-size:18px 18px;
  border-radius:20px;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-band h2{
  font-size:28px;
  font-weight:700;
  line-height:1.35;
  color:#fff;
  letter-spacing:-.3px;
}
.cta-band p{
  margin-top:12px;
  font-size:15px;
  color:rgba(255,255,255,.7);
  max-width:520px;
}
.cta-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  flex:none;
}
.cta-band .btn-ghost{
  border-color:rgba(255,255,255,.5);
  color:#fff;
}
.cta-band .btn-ghost:hover{
  background:rgba(255,255,255,.12);
}
.back-home{
  margin-top:32px;
  text-align:center;
  font-size:14px;
  color:var(--faint);
}
.back-home a{
  color:var(--ink);
  font-weight:600;
  border-bottom:2px solid var(--lime);
  padding-bottom:1px;
  transition:color .18s var(--ease);
}
.back-home a:hover{color:var(--brand);border-color:var(--brand);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:#fff;
  margin-top:96px;
  padding:64px 0 26px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-desc{
  font-size:14.5px;
  color:rgba(255,255,255,.68);
  max-width:340px;
}
.footer-col h3{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  display:inline-block;
  font-size:14.5px;
  color:rgba(255,255,255,.7);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{
  color:var(--lime);
  transform:translateX(2px);
}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-beian{min-height:1px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 28px;}
  .nav{height:56px;padding:0 20px;gap:12px;}
  .brand{font-size:15px;}
  .brand__mark{width:30px;height:30px;border-radius:9px;font-size:12px;}
  .nav__menu{
    position:fixed;
    left:0;
    right:0;
    top:56px;
    bottom:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px 20px 24px;
    background:#fff;
    border-top:1px solid var(--line);
    overflow-y:auto;
  }
  .nav__menu.is-open{display:flex;}
  .nav__link{
    height:52px;
    display:flex;
    align-items:center;
    padding:0 4px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    font-size:16px;
  }
  .nav__link::after{display:none;}
  .nav-search{display:none;}
  .nav-login{display:none;}
  .nav-burger{display:flex;}
  .head-grid{grid-template-columns:1fr;gap:32px;}
  .head-media{height:220px;order:-1;}
  .head-sub{max-width:none;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split__media{position:static;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 32px;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .head-title{letter-spacing:-.4px;}
  .sec-title{font-size:24px;gap:10px;}
  .sec-title::before{height:20px;width:3px;}
  .card{padding:20px;}
  .card-grid{gap:20px;}
  .tipband{padding:18px 20px;gap:14px 24px;}
  .cta-band{padding:36px 22px;border-radius:16px;}
  .cta-band h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .faq-q{font-size:16px;padding:20px 2px;}
  .faq-a p{padding:0 30px 20px 2px;}
  .site-footer{padding:52px 0 22px;margin-top:72px;}
  th,td{padding:14px 16px;}
}

@media (max-width:639px){
  .section{padding:56px 0;}
  .head-media{height:190px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .head-actions .btn{flex:1 1 100%;}
}