/* roulang page: index */
:root{
  --ink-900:#0F1512;
  --ink-700:#1C241E;
  --ink-500:#5A6259;
  --ink-300:#8A9187;
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#EFF1EC;
  --accent:#C6F24E;
  --accent-2:#FF6B4A;
  --line:#E2E5DC;
  --r-s:6px;
  --r-m:12px;
  --r-l:20px;
  --r-xl:28px;
  --sh-1:0 1px 2px rgba(15,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(15,21,18,.16);
  --sh-3:0 24px 48px -24px rgba(15,21,18,.28);
  --ez:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#0F1512;
  --bs-primary-rgb:15,21,18;
  --bs-body-bg:#F7F7F4;
  --bs-body-color:#1C241E;
  --bs-border-color:#E2E5DC;
  --bs-border-radius:12px;
  --bs-border-radius-lg:20px;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --bs-link-color:#0F1512;
  --bs-link-hover-color:#1C241E;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink-900);text-decoration:none;transition:color .15s var(--ez)}
a:hover{color:var(--ink-500)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
h1{font-size:clamp(2.2rem,5.2vw,4.2rem);font-weight:800;line-height:1.18;letter-spacing:-.01em;color:var(--ink-900)}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.28;color:var(--ink-900)}
h3{font-size:1.15rem;font-weight:650;line-height:1.4;color:var(--ink-900)}
p{color:var(--ink-700)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px}}
section{padding:96px 0}
@media (max-width:991px){section{padding:64px 0}}
@media (max-width:575px){section{padding:48px 0}}

/* ---------- 品牌行 ---------- */
.site-header{position:sticky;top:0;z-index:1000}
.brandbar{background:var(--ink-900);height:60px;transition:height .22s var(--ez),box-shadow .22s var(--ez)}
.brandbar.is-condensed{height:56px;box-shadow:var(--sh-2)}
.brandbar .inner{display:flex;align-items:center;gap:24px;height:100%}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.12rem;letter-spacing:.02em;white-space:nowrap}
.logo:hover{color:#fff}
.logo-mark{width:20px;height:20px;flex:0 0 20px;background:var(--accent);border-radius:5px;position:relative;transform:rotate(0deg)}
.logo-mark::after{content:"";position:absolute;inset:5px;background:var(--ink-900);border-radius:2px;clip-path:polygon(0 0,100% 0,100% 55%,55% 100%,0 100%)}
.searchbox{flex:1 1 auto;max-width:420px;position:relative}
.searchbox input{
  width:100%;height:38px;border-radius:var(--r-m);border:1px solid transparent;
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px 0 38px;font-size:.92rem;
  transition:border-color .15s var(--ez),background .15s var(--ez);
}
.searchbox input::placeholder{color:rgba(255,255,255,.5)}
.searchbox input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.12)}
.searchbox svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);opacity:.6}
.brand-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.link-quiet{color:rgba(255,255,255,.78);font-size:.92rem;position:relative}
.link-quiet:hover{color:#fff}
.link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .22s var(--ez)}
.link-quiet:hover::after{transform:scaleX(1)}

.channelbar{background:var(--paper);border-bottom:1px solid var(--line);height:52px;display:flex;align-items:center}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;width:100%;justify-content:center}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;display:inline-block;white-space:nowrap;padding:7px 14px;font-size:.94rem;
  color:var(--ink-500);border-radius:var(--r-m);transition:color .15s var(--ez),background .15s var(--ez);
}
.channel-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ez)}
.channel-nav a:hover{color:var(--ink-900)}
.channel-nav a:hover::after{transform:scaleX(1)}
.channel-nav a.active{background:var(--ink-900);color:var(--paper)}
.channel-nav a.active::after{display:none}
@media (max-width:991px){
  .channel-nav{justify-content:flex-start;padding:0 4px}
  .brand-actions .link-quiet{display:none}
  .searchbox{max-width:none}
}
@media (max-width:575px){
  .brandbar{height:56px}
  .searchbox{display:none}
  .logo{font-size:1rem}
  .btn-accent.btn-sm-hide{display:none}
}

/* ---------- 按钮 ---------- */
.btn-app{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);font-weight:650;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:background .15s var(--ez),transform .15s var(--ez),border-color .15s var(--ez),color .15s var(--ez);
}
.btn-app:active{transform:scale(.985)}
.btn-accent{background:var(--accent);color:var(--ink-900)}
.btn-accent:hover{background:#b8e63c;color:var(--ink-900)}
.btn-accent .arrow{transition:transform .15s var(--ez)}
.btn-accent:hover .arrow{transform:translateX(3px)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface-2);color:var(--ink-900)}
.btn-lg-app{height:52px;padding:0 28px;font-size:1rem}
.btn-dark-app{background:var(--ink-900);color:var(--paper)}
.btn-dark-app:hover{background:#222c25;color:var(--paper)}
.arrow{display:inline-block;width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg)}

/* ---------- 通用区块 ---------- */
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;font-weight:700;letter-spacing:.14em;color:var(--ink-500);text-transform:uppercase;margin-bottom:14px}
.section-tag::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:2px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-lead{color:var(--ink-500);font-size:.98rem;max-width:640px;margin-top:10px}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ez),transform .32s var(--ez)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- Hero ---------- */
.hero{padding:64px 0 88px;position:relative;overflow:hidden}
.hero-visual{
  border-radius:var(--r-xl);background:var(--ink-900) center/cover no-repeat;
  min-height:420px;position:relative;overflow:hidden;box-shadow:var(--sh-3);
}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,21,18,.35),rgba(15,21,18,.75))}
.hero-visual .corner{position:absolute;top:22px;right:22px;width:64px;height:64px;border:2px solid rgba(255,255,255,.28);border-radius:14px;transform:rotate(12deg)}
.hero-visual .stack{position:absolute;left:24px;right:24px;bottom:24px;z-index:2;display:flex;gap:14px;align-items:flex-end}
.hero-thumb{width:44%;border-radius:var(--r-m);overflow:hidden;border:1px solid rgba(255,255,255,.18);aspect-ratio:16/10}
.hero-thumb img{width:100%;height:100%;object-fit:cover}
.hero-note{flex:1;color:rgba(255,255,255,.86);font-size:.85rem;line-height:1.7}
.hero h1{max-width:15em}
.hero-sub{margin-top:20px;font-size:1.05rem;color:var(--ink-500);max-width:34em}
.hero-stats{display:flex;gap:48px;margin:36px 0 32px;flex-wrap:wrap}
.hero-stat .num{font-size:2.6rem;font-weight:800;line-height:1;color:var(--ink-900)}
.hero-stat .lbl{margin-top:8px;font-size:.84rem;color:var(--ink-500)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:991px){
  .hero{padding:40px 0 56px}
  .hero-visual{min-height:300px;margin-top:36px}
  .hero-stats{gap:32px}
  .hero-stat .num{font-size:2.1rem}
}

/* ---------- 对比表 ---------- */
.compare-wrap{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);box-shadow:var(--sh-1)}
.table-scroll{overflow-x:auto}
table.plans{width:100%;border-collapse:collapse;min-width:860px}
table.plans th,table.plans td{padding:0 20px;height:56px;text-align:left;font-size:.94rem;border-bottom:1px solid var(--line)}
table.plans thead th{background:var(--ink-900);color:var(--paper);height:auto;padding:24px 20px;vertical-align:top;font-weight:600}
table.plans tbody tr:nth-child(even){background:rgba(239,241,236,.6)}
table.plans tbody tr:hover{background:var(--surface-2)}
table.plans tbody td:first-child,table.plans thead th:first-child{position:sticky;left:0;background:var(--surface);z-index:2;font-weight:600;color:var(--ink-900)}
table.plans tbody tr:nth-child(even) td:first-child{background:#FAFAF7}
table.plans thead th:first-child{background:var(--ink-900);color:var(--paper)}
.plan-name{font-size:1rem;display:block;color:#fff}
.plan-price{font-size:2.2rem;font-weight:800;line-height:1.1;margin-top:12px;display:block}
.plan-price small{font-size:.8rem;font-weight:500;opacity:.7;margin-left:4px}
.plan-desc{display:block;font-size:.8rem;color:rgba(255,255,255,.62);margin-top:8px;line-height:1.6}
th.is-reco{position:relative;box-shadow:inset 0 0 0 2px var(--accent-2)}
th.is-reco .flag{
  position:absolute;top:0;right:0;background:var(--accent-2);color:#fff;
  font-size:.7rem;letter-spacing:.08em;padding:3px 10px;border-bottom-left-radius:10px;font-weight:700;
}
th.is-reco .plan-price{color:var(--accent-2)}
.dot-yes{display:inline-flex;align-items:center;gap:8px;color:var(--ink-700)}
.dot-yes::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--accent);flex:0 0 9px}
.dot-no{color:var(--ink-300)}
.compare-foot{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 24px;flex-wrap:wrap;border-top:1px solid var(--line);background:var(--surface)}
.compare-foot span{font-size:.9rem;color:var(--ink-500)}
.swipe-hint{display:none;text-align:center;font-size:.8rem;color:var(--ink-300);padding-top:12px}
@media (max-width:768px){.swipe-hint{display:block}}

/* ---------- 等级卡 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.tier-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:26px;
  box-shadow:var(--sh-1);transition:transform .22s var(--ez),box-shadow .22s var(--ez);position:relative;overflow:hidden;
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.tier-card .bar{position:absolute;top:0;left:0;right:0;height:4px;background:var(--accent)}
.tier-card.t1{margin-top:0}
.tier-card.t2{margin-top:16px}
.tier-card.t3{margin-top:32px}
.tier-card.t4{margin-top:16px}
.tier-card .lv{font-size:.78rem;letter-spacing:.1em;color:var(--ink-300);font-weight:700}
.tier-card h3{margin-top:10px}
.tier-card .punch{font-size:.88rem;color:var(--ink-500);margin-top:8px;min-height:2.6em}
.tier-card ul{list-style:none;padding:0;margin:18px 0 0}
.tier-card li{position:relative;padding-left:18px;font-size:.9rem;color:var(--ink-700);line-height:1.9}
.tier-card li::before{content:"";position:absolute;left:0;top:.82em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.tier-card.t3 .bar{background:var(--accent-2)}
.tier-card.t3 .lv{color:var(--accent-2)}
@media (max-width:991px){
  .tier-grid{grid-template-columns:repeat(2,1fr)}
  .tier-card.t2,.tier-card.t3,.tier-card.t4{margin-top:0}
}
@media (max-width:575px){.tier-grid{grid-template-columns:1fr}}

/* ---------- 专属内容 ---------- */
.exclusive{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:stretch}
.ex-cover{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--surface)}
.ex-cover img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .32s var(--ez)}
.ex-cover:hover img{transform:scale(1.03)}
.ex-badge{
  position:absolute;top:16px;right:16px;background:var(--ink-900);color:var(--paper);
  font-size:.75rem;padding:6px 12px;border-radius:var(--r-s);letter-spacing:.06em;font-weight:600;
}
.ex-caption{padding:20px 24px 24px;background:var(--surface)}
.ex-caption h3{font-size:1.2rem}
.ex-caption p{font-size:.9rem;color:var(--ink-500);margin-top:8px}
.ex-list{display:flex;flex-direction:column;gap:16px}
.ex-item{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:18px 20px;box-shadow:var(--sh-1);transition:transform .22s var(--ez),box-shadow .22s var(--ez);
}
.ex-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.ex-item h3{font-size:1rem;margin-top:8px}
.ex-item .meta{font-size:.8rem;color:var(--ink-300);margin-top:10px}
@media (max-width:991px){.exclusive{grid-template-columns:1fr}}

/* ---------- 资讯卡 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ez),box-shadow .22s var(--ez);height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.news-card .cover{overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ez)}
.news-card:hover .cover img{transform:scale(1.03)}
.news-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-card h3{margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .sum{margin-top:10px;font-size:.9rem;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-card .meta{margin-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--ink-300)}
.badge-soft{display:inline-block;font-size:.75rem;letter-spacing:.06em;background:var(--surface-2);color:var(--ink-700);border-radius:var(--r-s);padding:3px 10px;font-weight:600}
.badge-line{display:inline-block;font-size:.75rem;letter-spacing:.06em;color:var(--accent-2);border:1px solid var(--accent-2);border-radius:var(--r-s);padding:2px 9px;font-weight:600;background:rgba(255,107,74,.08)}
.empty-state{text-align:center;padding:64px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l)}
.empty-state .ring{width:56px;height:56px;border:2px solid var(--line);border-radius:50%;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;color:var(--ink-300)}
.empty-state p{color:var(--ink-500);margin-bottom:20px}
@media (max-width:991px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.news-grid{grid-template-columns:1fr}}

/* ---------- 证据条 ---------- */
.proof{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.proof-item{border-left:3px solid var(--accent);padding-left:20px}
.proof-item .num{font-size:2.4rem;font-weight:800;line-height:1;color:var(--ink-900)}
.proof-item .txt{margin-top:10px;font-size:.9rem;color:var(--ink-500)}
@media (max-width:768px){.proof-grid{grid-template-columns:1fr;gap:24px}}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start}
.faq-list{display:flex;flex-direction:column}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 40px 20px 0;font-size:1.05rem;font-weight:600;
  color:var(--ink-900);position:relative;transition:color .15s var(--ez);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;width:12px;height:12px;
  border-right:2px solid var(--ink-500);border-bottom:2px solid var(--ink-500);
  transform:translateY(-70%) rotate(45deg);transition:transform .22s var(--ez);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item::before{content:"";position:absolute;left:-16px;top:18px;bottom:18px;width:2px;background:transparent;transition:background .22s var(--ez)}
.faq-item[open]::before{background:var(--accent)}
.faq-item .answer{padding:0 40px 22px 0;font-size:.94rem;line-height:1.85;color:var(--ink-500)}
@media (max-width:991px){.faq-layout{grid-template-columns:1fr;gap:24px}}

/* ---------- 深色 CTA ---------- */
.cta-dark{background:var(--ink-900);color:var(--paper);text-align:center;padding:88px 0}
.cta-dark h2{color:#fff}
.cta-dark p{color:rgba(255,255,255,.7);margin-top:12px;font-size:1rem}
.cta-points{display:flex;justify-content:center;gap:32px;flex-wrap:wrap;margin:32px 0 36px}
.cta-points span{display:inline-flex;align-items:center;gap:9px;font-size:.9rem;color:rgba(255,255,255,.82)}
.cta-points span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.cta-actions{display:flex;justify-content:center;align-items:center;gap:22px;flex-wrap:wrap}
.cta-dark .link-quiet{color:rgba(255,255,255,.78)}
@media (max-width:575px){.cta-dark{padding:56px 0}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-grid h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-grid a{color:rgba(255,255,255,.72);font-size:.9rem;display:block;padding:5px 0}
.footer-grid a:hover{color:#fff}
.footer-brand p{font-size:.9rem;line-height:1.9;margin-top:16px;color:rgba(255,255,255,.6);max-width:28em}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem;color:rgba(255,255,255,.5)}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}.site-footer{padding-top:48px}}

/* roulang page: article */
:root{
  --bs-primary:#C6F24E;
  --bs-primary-rgb:198,242,78;
  --bs-body-bg:#F7F7F4;
  --bs-body-color:#1C241E;
  --bs-border-color:#E2E5DC;
  --bs-border-radius:12px;
  --bs-border-radius-sm:6px;
  --bs-border-radius-lg:20px;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",Inter,Barlow,sans-serif;
  --bs-link-color:#0F1512;
  --bs-link-hover-color:#0F1512;
  --ink-900:#0F1512;
  --ink-700:#1C241E;
  --ink-500:#5A6259;
  --ink-300:#8A9187;
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#EFF1EC;
  --accent:#C6F24E;
  --accent-2:#FF6B4A;
  --line:#E2E5DC;
  --r-s:6px;
  --r-m:12px;
  --r-l:20px;
  --r-xl:28px;
  --sh-1:0 1px 2px rgba(15,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(15,21,18,.16);
  --sh-3:0 24px 48px -24px rgba(15,21,18,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em}
p{margin:0}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-s)}
.container{width:100%;max-width:1240px!important;margin:0 auto;padding-left:24px;padding-right:24px}

/* 品牌行 */
.site-header{position:sticky;top:0;z-index:80}
.brandbar{
  background:var(--ink-900);
  height:60px;
  display:flex;
  align-items:center;
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.brandbar.is-shrink{height:56px;box-shadow:var(--sh-2)}
.brandbar .inner{display:flex;align-items:center;gap:20px;width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.logo-mark{
  width:20px;height:20px;flex:none;background:var(--accent);
  clip-path:polygon(0 0,72% 0,100% 28%,100% 100%,28% 100%,0 72%);
}
.searchbox{
  flex:1;max-width:360px;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-m);padding:0 12px;height:38px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.searchbox input{
  flex:1;background:transparent;border:0;outline:none;color:#fff;font-size:14px;height:100%;
}
.searchbox input::placeholder{color:rgba(255,255,255,.5)}
.searchbox:focus-within{border-color:var(--accent);background:rgba(255,255,255,.12)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.link-quiet{color:rgba(255,255,255,.72);font-size:14px;position:relative;transition:color .15s var(--ease)}
.link-quiet:hover{color:#fff}
.link-quiet::after{content:"";position:absolute;left:50%;bottom:-4px;width:100%;height:2px;background:var(--accent);transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.link-quiet:hover::after{transform:translateX(-50%) scaleX(1)}

/* 按钮 */
.btn-app{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);
  font-size:15px;font-weight:650;border:1px solid transparent;
  cursor:pointer;transition:transform .15s var(--ease),background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-app:active{transform:scale(.985)}
.btn-accent{background:var(--accent);color:var(--ink-900)}
.btn-accent:hover{background:#b8e63e;color:var(--ink-900)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-lg-app{height:52px;padding:0 28px;font-size:16px}
.btn-app .arrow{transition:transform .22s var(--ease)}
.btn-app:hover .arrow{transform:translateX(3px)}
.btn-sm-hide{height:38px;padding:0 18px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--ink-900);font-weight:650;font-size:14px;
}
.text-link .arrow{transition:transform .22s var(--ease)}
.text-link:hover .arrow{transform:translateX(3px)}

/* 频道行 */
.channelbar{background:var(--paper);border-bottom:1px solid var(--line);height:52px;display:flex;align-items:center}
.channel-nav{display:flex;align-items:center;justify-content:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;padding:8px 14px;border-radius:var(--r-m);
  font-size:14.5px;color:var(--ink-500);white-space:nowrap;
  transition:color .15s var(--ease),background .22s var(--ease);
}
.channel-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease);
}
.channel-nav a:hover{color:var(--ink-900)}
.channel-nav a:hover::after{transform:scaleX(1)}
.channel-nav a.active{background:var(--ink-900);color:var(--paper);font-weight:650}
.channel-nav a.active::after{display:none}

/* 文章头部 */
.article-hero{padding:40px 0 32px;background:var(--paper)}
.breadcrumb-nav{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--ink-300);margin-bottom:20px;
}
.breadcrumb-nav a{color:var(--ink-500);border-bottom:1px solid transparent;transition:color .15s var(--ease),border-color .15s var(--ease)}
.breadcrumb-nav a:hover{color:var(--ink-900);border-color:var(--accent)}
.breadcrumb-nav .sep{color:var(--ink-300)}
.breadcrumb-nav .current{color:var(--ink-500);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;padding:3px 10px;
  border-radius:var(--r-s);background:var(--surface-2);color:var(--ink-700);
}
.chip-accent{border:1px solid var(--accent-2);background:rgba(255,107,74,.08);color:#B8412A}
.article-title{
  font-size:clamp(1.9rem,3.6vw,2.6rem);
  font-weight:800;line-height:1.3;margin:14px 0 18px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:14px;color:var(--ink-300);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* 布局 */
.article-layout{padding:48px 0 88px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:992px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
}
.article-figure{margin:0 0 32px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-figure figcaption{font-size:13px;color:var(--ink-300);padding:12px 18px;background:var(--surface)}

/* 正文排版 */
.article-body{max-width:760px;font-size:17px;line-height:1.95;color:var(--ink-700)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:clamp(1.3rem,2.2vw,1.6rem);font-weight:700;line-height:1.42;
  margin:48px 0 16px;padding-left:14px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:2px;background:var(--accent)}
.article-body h3{font-size:1.25rem;font-weight:650;line-height:1.5;margin:32px 0 12px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;line-height:1.9}
.article-body ol{padding-left:1.5em}
.article-body li{margin:.3em 0}
.article-body ul{list-style:none}
.article-body ul>li{position:relative;padding-left:20px}
.article-body ul>li::before{content:"";position:absolute;left:2px;top:.75em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.article-body ol>li::marker{color:var(--ink-900);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--surface-2);
  border-left:3px solid var(--accent);border-radius:var(--r-s);color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--ink-900);border-bottom:2px solid var(--accent);transition:color .15s var(--ease)}
.article-body a:hover{color:#2A3A22}
.article-body img{border-radius:var(--r-l);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-300);text-align:center;margin-top:8px}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;
  background:var(--surface-2);padding:2px 6px;border-radius:var(--r-s);
}
.article-body pre{background:var(--surface-2);padding:16px 18px;border-radius:var(--r-m);overflow-x:auto;line-height:1.7}
.article-body pre code{background:none;padding:0}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;margin:24px 0;background:var(--surface)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.article-body th{background:var(--ink-900);color:var(--paper);font-weight:650;text-align:left;padding:14px 18px;white-space:nowrap}
.article-body td{padding:13px 18px;border-top:1px solid var(--line);color:var(--ink-700)}
.article-body tbody tr:nth-child(even){background:rgba(239,241,236,.6)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:24px}
@media (min-width:992px){.article-side{position:sticky;top:132px}}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:22px}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;letter-spacing:.02em}
.side-label{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--ink-300);margin-bottom:12px}
.side-label::before{content:"";width:3px;height:12px;background:var(--accent);border-radius:2px}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:11px 0;font-size:14.5px;line-height:1.6;color:var(--ink-700);transition:color .15s var(--ease),padding-left .22s var(--ease)}
.side-list a:hover{color:var(--ink-900);padding-left:4px}
.side-note{font-size:13.5px;line-height:1.85;color:var(--ink-500)}
.side-kv{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-500);padding:8px 0;border-bottom:1px dashed var(--line)}
.side-kv:last-child{border-bottom:0}
.side-kv b{color:var(--ink-900);font-weight:650}

/* 相关推荐 */
.related{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.section-tag{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--ink-300);margin-bottom:10px}
.section-tag::before{content:"";width:3px;height:12px;background:var(--accent);border-radius:2px}
.related h2{font-size:clamp(1.3rem,2.2vw,1.6rem);font-weight:700;margin-bottom:22px}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:576px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.mini-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5D9CC}
.mini-card .thumb{overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.mini-card:hover .thumb img{transform:scale(1.03)}
.mini-card .mini-body{padding:18px}
.mini-card h3{font-size:16px;font-weight:650;line-height:1.45;margin:10px 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{font-size:13px;color:var(--ink-300)}

/* 返回条 */
.article-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:36px}

/* 空态 */
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state svg{margin:0 auto 18px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:20px}

/* 浅色 CTA 带 */
.cta-band{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.cta-band-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{font-size:clamp(1.35rem,2.4vw,1.85rem);font-weight:700;margin-bottom:8px}
.cta-band p{color:var(--ink-500);font-size:15px;max-width:560px}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.site-footer h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:14px}
.site-footer a{display:block;font-size:14px;color:rgba(255,255,255,.68);padding:5px 0;transition:color .15s var(--ease)}
.site-footer a:hover{color:#fff}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:420px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:991px){
  .article-side{position:static}
}
@media (max-width:767px){
  .brandbar .inner{padding:0 16px;gap:12px}
  .container{padding-left:16px;padding-right:16px}
  .searchbox{display:none}
  .channel-nav{justify-content:flex-start}
  .article-hero{padding:28px 0 24px}
  .article-layout{padding:32px 0 64px}
  .article-body{font-size:16.5px}
  .cta-band{padding:44px 0}
  .site-footer{padding:48px 0 24px}
  .btn-sm-hide{display:none}
}
@media (max-width:480px){
  .logo{font-size:15.5px}
  .article-meta{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#0F1512;
  --ink-700:#1C241E;
  --ink-500:#5A6259;
  --ink-300:#8A9187;
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#EFF1EC;
  --accent:#C6F24E;
  --accent-2:#FF6B4A;
  --line:#E2E5DC;
  --r-s:6px;
  --r-m:12px;
  --r-l:20px;
  --r-xl:28px;
  --sh-1:0 1px 2px rgba(15,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(15,21,18,.16);
  --sh-3:0 24px 48px -24px rgba(15,21,18,.28);
  --t-fast:150ms;
  --t-mid:220ms;
  --t-slow:320ms;
  --ease:cubic-bezier(.2,.7,.2,1);

  --bs-body-bg:#F7F7F4;
  --bs-body-color:#1C241E;
  --bs-border-color:#E2E5DC;
  --bs-border-radius:12px;
  --bs-primary:#0F1512;
  --bs-primary-rgb:15,21,18;
  --bs-link-color:#0F1512;
  --bs-link-hover-color:#000000;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Noto Sans SC","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(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t-fast) var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.2em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- 按钮体系 ---------- */
.btn-app{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);
  font-size:.95rem;font-weight:650;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.btn-app svg{transition:transform var(--t-fast) var(--ease)}
.btn-app:hover svg{transform:translateX(3px)}
.btn-app:active{transform:scale(.985)}
.btn-accent{background:var(--accent);color:var(--ink-900)}
.btn-accent:hover{background:#b8e63f;color:var(--ink-900)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--surface-2);border-color:#cfd5c8}
.btn-app.btn-lg{height:52px;padding:0 28px;font-size:1rem}

.link-quiet{color:rgba(255,255,255,.78);font-size:.9rem;font-weight:600}
.link-quiet:hover{color:#fff}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:.9rem;font-weight:650;color:var(--ink-900)}
.link-arrow svg{transition:transform var(--t-fast) var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

.tag{
  display:inline-flex;align-items:center;
  padding:3px 9px;border-radius:var(--r-s);
  font-size:.75rem;letter-spacing:.06em;font-weight:650;
  background:var(--surface-2);color:var(--ink-700);
}
.tag-ghost{background:transparent;border:1px solid var(--line);color:var(--ink-500)}
.tag-warm{background:rgba(255,107,74,.1);border:1px solid rgba(255,107,74,.45);color:#b23c1f}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60}

.brandbar{background:var(--ink-900);transition:box-shadow var(--t-mid) var(--ease)}
.site-header.is-scrolled .brandbar{box-shadow:var(--sh-2)}
.brandbar .inner{display:flex;align-items:center;gap:24px;height:60px;transition:height var(--t-mid) var(--ease)}
.site-header.is-scrolled .brandbar .inner{height:56px}

.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.05rem;letter-spacing:.02em;white-space:nowrap}
.logo-mark{
  width:22px;height:22px;flex:0 0 22px;background:var(--accent);
  clip-path:polygon(0 0,72% 0,100% 28%,100% 100%,28% 100%,0 72%);
}
.site-footer .logo{color:#fff}

.searchbox{
  display:flex;align-items:center;gap:8px;
  flex:1;max-width:380px;height:38px;padding:0 12px;
  background:var(--surface-2);border:2px solid transparent;border-radius:var(--r-m);
  transition:border-color var(--t-fast) var(--ease);
}
.searchbox:focus-within{border-color:var(--accent)}
.searchbox input{flex:1;border:0;background:transparent;outline:none;font-size:.9rem;color:var(--ink-900);min-width:0}
.searchbox input::placeholder{color:var(--ink-500)}

.brand-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.brand-actions .btn-app{height:38px;padding:0 18px;font-size:.9rem}

.channelbar{background:var(--paper);border-bottom:1px solid var(--line)}
.channel-nav{
  display:flex;align-items:center;justify-content:center;gap:6px;
  height:52px;overflow-x:auto;scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;flex:0 0 auto;
  padding:8px 14px;border-radius:var(--r-m);
  font-size:.95rem;font-weight:600;color:var(--ink-500);white-space:nowrap;
  transition:color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease);
}
.channel-nav a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:calc(100% - 28px);height:2px;background:var(--accent);
  transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform var(--t-mid) var(--ease);
}
.channel-nav a:hover{color:var(--ink-900)}
.channel-nav a:hover::after{transform:translateX(-50%) scaleX(1)}
.channel-nav a.active{background:var(--ink-900);color:var(--paper)}
.channel-nav a.active::after{display:none}

/* ---------- 面包屑 / 首屏 ---------- */
.breadcrumb-line{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding-top:24px;font-size:.82rem;color:var(--ink-300);
}
.breadcrumb-line a{color:var(--ink-500);border-bottom:1px solid transparent}
.breadcrumb-line a:hover{color:var(--ink-900);border-bottom-color:var(--accent)}
.breadcrumb-line .sep{color:var(--ink-300)}
.breadcrumb-line [aria-current]{color:var(--ink-700);font-weight:600}

.page-hero{padding:24px 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%)}
.hero-row{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:48px;align-items:start;margin-top:28px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;letter-spacing:.14em;font-weight:700;color:var(--ink-500)}
.eyebrow i{width:3px;height:12px;background:var(--accent);border-radius:2px;display:inline-block}
.page-hero h1{
  margin:16px 0 0;
  font-size:clamp(2.1rem,4.4vw,3.2rem);
  font-weight:800;line-height:1.2;letter-spacing:-.01em;color:var(--ink-900);
}
.hero-lead{margin-top:16px;max-width:640px;font-size:1.05rem;line-height:1.8;color:var(--ink-500)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

.hero-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);padding:24px;display:grid;gap:18px;
}
.hero-side .stat{display:flex;align-items:baseline;gap:10px}
.hero-side .stat strong{font-size:2.4rem;font-weight:800;line-height:1;color:var(--ink-900)}
.hero-side .stat span{font-size:.85rem;color:var(--ink-500);line-height:1.5}
.hero-side .hero-tag{
  border-top:1px solid var(--line);padding-top:14px;
  font-size:.8rem;color:var(--ink-500);letter-spacing:.04em;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.sec-label{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;letter-spacing:.14em;font-weight:700;color:var(--ink-500)}
.sec-label::before{content:"";width:3px;height:12px;background:var(--accent);border-radius:2px}
.section-head h2{margin-top:14px;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.28;color:var(--ink-900)}
.section-head p{margin-top:12px;font-size:.98rem;color:var(--ink-500);max-width:640px}

/* ---------- 访问方式对照 ---------- */
.method-list{border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden;box-shadow:var(--sh-1)}
.method-row{
  display:grid;grid-template-columns:220px minmax(0,1fr) 240px;gap:24px;align-items:center;
  padding:24px 28px;border-bottom:1px solid var(--line);
  transition:background-color var(--t-fast) var(--ease);
}
.method-row:last-child{border-bottom:0}
.method-row:hover{background:var(--surface-2)}
.method-name{display:flex;align-items:center;gap:12px;font-size:1.05rem;font-weight:650;color:var(--ink-900)}
.method-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--ink-900);color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:.04em;
}
.method-desc{font-size:.95rem;line-height:1.8;color:var(--ink-500)}
.method-meta{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}

/* ---------- 主体两栏 ---------- */
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;align-items:start}

.side-nav{position:sticky;top:128px}
.side-nav .side-title{
  font-size:.75rem;letter-spacing:.14em;font-weight:700;color:var(--ink-300);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:12px;
}
.side-nav ul{list-style:none;padding:0;margin:0;display:grid;gap:2px}
.side-nav li a{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:.9rem;font-weight:600;color:var(--ink-500);
  border-left:2px solid transparent;
  transition:color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.side-nav li a:hover{color:var(--ink-900);background:var(--surface-2)}
.side-nav li a.is-current{color:var(--ink-900);border-left-color:var(--accent);background:rgba(198,242,78,.16)}
.side-card{
  margin-top:24px;padding:20px;border-radius:var(--r-l);
  background:var(--ink-900);color:rgba(255,255,255,.75);
}
.side-card h4{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:8px}
.side-card p{font-size:.85rem;line-height:1.75}
.side-card a{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:.85rem;font-weight:650;color:var(--accent)}

/* ---------- 图文竖列条目 ---------- */
.entry-list{display:grid;gap:20px}
.entry{
  display:grid;grid-template-columns:264px minmax(0,1fr);gap:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#d6dccf}
.entry-media{display:block;border-radius:14px;overflow:hidden;background:var(--surface-2);aspect-ratio:16/10}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease)}
.entry:hover .entry-media img{transform:scale(1.03)}
.entry-body{display:flex;flex-direction:column;gap:10px;padding:6px 4px}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px}
.entry-title{font-size:1.15rem;font-weight:650;line-height:1.45;color:var(--ink-900)}
.entry-title a:hover{color:#000}
.entry-title a{border-bottom:2px solid transparent}
.entry-title a:hover{border-bottom-color:var(--accent)}
.entry-sum{font-size:.93rem;line-height:1.8;color:var(--ink-500)}
.entry-meta{
  display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:12px;
  font-size:.8rem;color:var(--ink-300);border-top:1px solid var(--line);
}
.entry-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- FAQ ---------- */
.faq-block{margin-top:64px}
.faq-block h2{font-size:clamp(1.4rem,2.2vw,1.8rem);font-weight:700;color:var(--ink-900);margin:14px 0 24px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  margin-bottom:12px;overflow:hidden;
  transition:box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.faq-item[open]{box-shadow:var(--sh-2);border-color:#d6dccf}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:1.05rem;font-weight:600;line-height:1.5;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:var(--accent);
  transform:scaleY(0);transform-origin:center;transition:transform var(--t-mid) var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-700);
  transition:transform var(--t-mid) var(--ease),background-color var(--t-mid) var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-item[open] .faq-icon::before{background:var(--ink-900)}
.faq-body{padding:0 20px 20px;font-size:.95rem;line-height:1.85;color:var(--ink-500)}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:36px 40px;box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:clamp(1.4rem,2.3vw,1.9rem);font-weight:700;line-height:1.3;color:var(--ink-900)}
.cta-inner p{margin-top:10px;font-size:.95rem;color:var(--ink-500);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-grid h4{font-size:.85rem;letter-spacing:.1em;font-weight:700;color:#fff;margin-bottom:16px}
.footer-grid a{display:block;padding:5px 0;font-size:.9rem;color:rgba(255,255,255,.68)}
.footer-grid a:hover{color:var(--accent)}
.footer-brand p{margin-top:16px;font-size:.9rem;line-height:1.9;color:rgba(255,255,255,.6);max-width:360px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:.82rem;color:rgba(255,255,255,.5);
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .layout{grid-template-columns:230px minmax(0,1fr);gap:36px}
}

@media (max-width:992px){
  .hero-row{grid-template-columns:1fr;gap:28px}
  .hero-side{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
  .hero-side .hero-tag{grid-column:1 / -1;border-top:0;padding-top:0}
  .layout{grid-template-columns:1fr;gap:32px}
  .side-nav{position:static}
  .side-nav ul{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
  .side-nav ul::-webkit-scrollbar{display:none}
  .side-nav li a{white-space:nowrap;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 14px}
  .side-nav li a.is-current{border-color:var(--accent);background:rgba(198,242,78,.18);border-left-color:var(--accent)}
  .side-nav .side-title{border-bottom:0;padding-bottom:6px}
  .method-row{grid-template-columns:1fr;gap:12px;padding:20px 22px}
  .method-meta{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:64px 0}
  .page-hero{padding:12px 0 40px}
  .brandbar .inner{gap:14px}
  .searchbox{display:none}
  .entry{grid-template-columns:1fr;padding:16px}
  .entry-media{aspect-ratio:16/9}
  .cta-inner{padding:28px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}

@media (max-width:576px){
  .section{padding:48px 0}
  .hero-side{grid-template-columns:1fr;gap:12px}
  .hero-side .stat strong{font-size:2rem}
  .btn-app{width:100%;padding:0 18px}
  .hero-cta,.cta-actions{flex-direction:column;align-items:stretch}
  .channel-nav{justify-content:flex-start;padding-right:16px;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
  .entry-meta{flex-wrap:wrap}
}

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

/* roulang page: category2 */
:root{
  --bs-primary:#C6F24E;
  --bs-body-bg:#F7F7F4;
  --bs-body-color:#1C241E;
  --bs-border-color:#E2E5DC;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;

  --ink-900:#0F1512;
  --ink-700:#1C241E;
  --ink-500:#5A6259;
  --ink-300:#8A9187;
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#EFF1EC;
  --accent:#C6F24E;
  --accent-2:#FF6B4A;
  --line:#E2E5DC;
  --r-s:6px;
  --r-m:12px;
  --r-l:20px;
  --r-xl:28px;
  --sh-1:0 1px 2px rgba(15,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(15,21,18,.16);
  --sh-3:0 24px 48px -24px rgba(15,21,18,.28);
  --font:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Barlow","HarmonyOS Sans",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4,p{margin:0}
p{margin:0 0 1.2em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-s)}
.container{max-width:1240px;width:100%;margin-inline:auto;padding-inline:24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brandbar{background:var(--ink-900);transition:box-shadow .22s var(--ease),height .22s var(--ease)}
.brandbar .inner{display:flex;align-items:center;gap:24px;height:60px;transition:height .22s var(--ease)}
.brandbar.is-scrolled{box-shadow:var(--sh-2)}
.brandbar.is-scrolled .inner{height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;font-size:1.05rem;color:#fff;white-space:nowrap}
.logo-mark{width:20px;height:20px;flex:0 0 20px;background:var(--accent);border-radius:5px;position:relative;box-shadow:inset 0 0 0 3px var(--ink-900)}
.logo-mark::after{content:"";position:absolute;left:5px;top:5px;width:7px;height:7px;background:var(--ink-900);border-radius:2px}
.searchbox{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-m);padding:0 12px;height:40px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.searchbox:focus-within{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.searchbox input{flex:1;background:transparent;border:0;outline:none;color:#fff;font-size:.9rem}
.searchbox input::placeholder{color:rgba(255,255,255,.5)}
.brand-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
.link-quiet{color:rgba(255,255,255,.78);font-size:.92rem;position:relative;padding-bottom:2px}
.link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .22s var(--ease)}
.link-quiet:hover{color:#fff}
.link-quiet:hover::after{transform:scaleX(1)}
.channelbar{background:var(--paper);border-bottom:1px solid var(--line)}
.channel-nav{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{flex:0 0 auto;font-size:.94rem;color:var(--ink-500);padding:8px 14px;border-radius:var(--r-m);position:relative;transition:color .15s var(--ease),background .15s var(--ease)}
.channel-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .22s var(--ease)}
.channel-nav a:hover{color:var(--ink-900)}
.channel-nav a:hover::after{transform:scaleX(1)}
.channel-nav a.active{background:var(--ink-900);color:var(--paper);font-weight:600}
.channel-nav a.active::after{display:none}

/* ---------- Buttons ---------- */
.btn-app{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-m);font-weight:650;font-size:.95rem;border:1px solid transparent;cursor:pointer;transition:background .15s var(--ease),color .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease),border-color .15s var(--ease)}
.btn-app:active{transform:scale(.985)}
.btn-app svg{transition:transform .22s var(--ease)}
.btn-app:hover svg{transform:translateX(3px)}
.btn-accent{background:var(--accent);color:var(--ink-900)}
.btn-accent:hover{background:#b8e63f;color:var(--ink-900)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface-2);color:var(--ink-900)}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:650;color:var(--ink-900);border-bottom:2px solid var(--accent);padding-bottom:2px;transition:gap .22s var(--ease)}
.btn-link:hover{gap:11px}

/* ---------- Tags & badges ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.06em;padding:3px 9px;border-radius:var(--r-s);background:var(--surface-2);color:var(--ink-700)}
.tag-hot{background:rgba(255,107,74,.1);color:#B33C1F;border:1px solid rgba(255,107,74,.4)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--ink-500);text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:3px;height:12px;background:var(--accent);border-radius:2px}

/* ---------- Sections ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--ink-900)}
.section-head p{margin-top:12px;color:var(--ink-500);font-size:.98rem;margin-bottom:0}

/* ---------- Breadcrumb & hero ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--ink-300);padding:20px 0 0}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--ink-900);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:4px}
.crumb span.sep{color:var(--line)}
.cat-hero{padding:28px 0 48px;border-bottom:1px solid var(--line)}
.cat-hero .grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end}
.cat-hero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:800;line-height:1.18;letter-spacing:-.01em;color:var(--ink-900);margin-bottom:14px}
.cat-hero .lead{max-width:660px;color:var(--ink-500);font-size:1rem;margin:0}
.hero-side{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:18px 22px;box-shadow:var(--sh-1);min-width:220px}
.side-card .big{font-family:var(--font-num);font-size:2.2rem;font-weight:800;color:var(--ink-900);line-height:1.1}
.side-card .lbl{font-size:.82rem;color:var(--ink-500);letter-spacing:.04em}

/* ---------- Compare intro 5/7 ---------- */
.compare-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch}
.panel-dark{background:var(--ink-900);color:#fff;border-radius:var(--r-l);padding:32px;display:flex;flex-direction:column;gap:18px}
.panel-dark h3{font-size:1.25rem;font-weight:700;color:#fff}
.panel-dark p{color:rgba(255,255,255,.72);font-size:.94rem;margin:0}
.panel-dark ul{display:flex;flex-direction:column;gap:10px;margin-top:auto}
.panel-dark li{display:flex;gap:10px;font-size:.92rem;color:rgba(255,255,255,.82)}
.panel-dark li::before{content:"";flex:0 0 8px;width:8px;height:8px;margin-top:10px;border-radius:50%;background:var(--accent)}
.tier-stack{display:flex;flex-direction:column;gap:12px}
.tier-row{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:18px 24px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.tier-row:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.tier-row.is-hot{border-color:rgba(255,107,74,.55);box-shadow:0 0 0 1px rgba(255,107,74,.35),var(--sh-1)}
.tier-name{font-weight:700;color:var(--ink-900);display:flex;align-items:center;gap:10px;white-space:nowrap}
.tier-desc{font-size:.9rem;color:var(--ink-500)}
.tier-price{font-family:var(--font-num);font-weight:800;font-size:1.5rem;color:var(--ink-900);white-space:nowrap}
.tier-price small{font-size:.75rem;font-weight:500;color:var(--ink-300);margin-left:2px}

/* ---------- Table ---------- */
.table-wrap{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);box-shadow:var(--sh-1)}
.table-scroll{overflow-x:auto}
table.cmp{width:100%;min-width:820px;border-collapse:collapse;font-size:.94rem}
table.cmp th,table.cmp td{padding:0 20px;text-align:left;border-bottom:1px solid var(--line);height:56px;vertical-align:middle;white-space:nowrap}
table.cmp thead th{background:var(--ink-900);color:var(--paper);font-weight:600;height:76px;white-space:normal;vertical-align:middle}
table.cmp thead th .th-price{display:block;font-family:var(--font-num);font-size:1.35rem;font-weight:800;color:var(--accent);line-height:1.4}
table.cmp thead th .th-sub{display:block;font-size:.76rem;color:rgba(247,247,244,.6);font-weight:400}
table.cmp tbody tr:nth-child(even){background:rgba(239,241,236,.6)}
table.cmp tbody tr:hover{background:var(--surface-2)}
table.cmp tbody td:first-child,table.cmp thead th:first-child{position:sticky;left:0;background:var(--surface);z-index:2;font-weight:600;color:var(--ink-900);border-right:1px solid var(--line)}
table.cmp thead th:first-child{background:var(--ink-900);color:var(--paper)}
table.cmp tbody tr:nth-child(even) td:first-child{background:#FAFBF8}
table.cmp tbody tr:hover td:first-child{background:var(--surface-2)}
.dot-yes{display:inline-flex;align-items:center;gap:8px;color:var(--ink-700)}
.dot-yes::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 2px rgba(198,242,78,.35)}
.dot-no{color:var(--ink-300)}
.col-best{background:rgba(255,107,74,.05)}
.table-foot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;padding:18px 24px;border-top:1px solid var(--line);background:var(--surface)}
.table-foot p{margin:0;font-size:.88rem;color:var(--ink-500)}
.scroll-hint{display:none;font-size:.78rem;color:var(--ink-300);padding:8px 4px 0}

/* ---------- Cards 2 col ---------- */
.card-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card-x{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.card-x:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-x .thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.card-x .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card-x:hover .thumb img{transform:scale(1.03)}
.card-x .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-x h3{font-size:1.12rem;font-weight:650;line-height:1.4;color:var(--ink-900)}
.card-x .sum{font-size:.92rem;color:var(--ink-500);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:14px;margin-top:auto;padding-top:16px;font-size:.8rem;color:var(--ink-300);border-top:1px solid var(--line)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:28px;box-shadow:var(--sh-1)}
.step .idx{font-family:var(--font-num);font-size:2.4rem;font-weight:800;color:var(--ink-900);line-height:1;opacity:.16}
.step h3{font-size:1.05rem;font-weight:650;color:var(--ink-900);margin:14px 0 8px}
.step p{font-size:.92rem;color:var(--ink-500);margin:0}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px}
.faq-list{display:flex;flex-direction:column;gap:10px}
details.faq-item{background:transparent;border:1px solid var(--line);border-radius:var(--r-m);padding:0 22px;transition:background .22s var(--ease),border-color .22s var(--ease)}
details.faq-item[open]{background:var(--surface);border-color:var(--line)}
details.faq-item summary{list-style:none;cursor:pointer;font-size:1.06rem;font-weight:600;color:var(--ink-900);padding:18px 0;display:flex;align-items:center;gap:14px;position:relative}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary::before{content:"";width:2px;height:0;background:var(--accent);border-radius:2px;transition:height .22s var(--ease);align-self:stretch;flex:0 0 2px}
details.faq-item[open] summary::before{height:auto;min-height:22px}
details.faq-item summary .ico{margin-left:auto;flex:0 0 18px;width:18px;height:18px;position:relative;transition:transform .22s var(--ease)}
details.faq-item summary .ico::before,details.faq-item summary .ico::after{content:"";position:absolute;background:var(--ink-500);border-radius:2px}
details.faq-item summary .ico::before{left:0;top:8px;width:18px;height:2px}
details.faq-item summary .ico::after{left:8px;top:0;width:2px;height:18px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
details.faq-item[open] summary .ico::after{transform:rotate(90deg);opacity:0}
details.faq-item .ans{padding:0 0 20px;font-size:.95rem;line-height:1.85;color:var(--ink-500);border-top:1px solid var(--line);padding-top:16px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-xl);padding:48px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;color:var(--ink-900);margin-bottom:10px}
.cta-band p{color:var(--ink-500);margin:0;font-size:.96rem}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);margin-top:96px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.site-footer h4{font-size:.95rem;font-weight:700;color:#fff;margin:0 0 16px}
.site-footer a{display:block;font-size:.9rem;color:rgba(255,255,255,.66);padding:6px 0;transition:color .15s var(--ease)}
.site-footer a:hover{color:var(--accent)}
.footer-brand p{font-size:.9rem;line-height:1.9;color:rgba(255,255,255,.6);margin:16px 0 0;max-width:340px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:20px 0 32px;border-top:1px solid rgba(255,255,255,.12);font-size:.82rem;color:rgba(255,255,255,.5)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .compare-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .cat-hero .grid{grid-template-columns:1fr}
  .hero-side{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px}
}
@media (max-width:767px){
  .container{padding-inline:16px}
  .section{padding:48px 0}
  .searchbox{display:none}
  .brand-actions .link-quiet{display:none}
  .card-grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .scroll-hint{display:block}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .site-footer{margin-top:64px}
}
@media (max-width:575px){
  .cat-hero h1{font-size:1.9rem}
  .side-card{min-width:100%}
  .hero-side{flex-direction:column;width:100%}
  .cta-band{padding:28px}
  .cta-band .actions .btn-app{width:100%}
  .btn-sm-hide{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#0F1512;
  --ink-700:#1C241E;
  --ink-500:#5A6259;
  --ink-300:#8A9187;
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --surface-2:#EFF1EC;
  --accent:#C6F24E;
  --accent-2:#FF6B4A;
  --line:#E2E5DC;
  --r-s:6px;
  --r-m:12px;
  --r-l:20px;
  --r-xl:28px;
  --sh-1:0 1px 2px rgba(15,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(15,21,18,.16);
  --sh-3:0 24px 48px -24px rgba(15,21,18,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Barlow","HarmonyOS Sans",system-ui,sans-serif;

  --bs-primary:#0F1512;
  --bs-primary-rgb:15,21,18;
  --bs-body-bg:#F7F7F4;
  --bs-body-color:#1C241E;
  --bs-border-color:#E2E5DC;
  --bs-border-radius:12px;
  --bs-border-radius-lg:20px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#1C241E;
  --bs-link-hover-color:#0F1512;
  --bs-link-decoration:none;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease)}
button,input{font-family:inherit;font-size:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brandbar{
  background:var(--ink-900);
  min-height:60px;
  display:flex;
  align-items:center;
  transition:min-height .22s var(--ease),box-shadow .22s var(--ease);
}
.brandbar.compact{min-height:56px;box-shadow:var(--sh-2)}
.brandbar .inner{display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.02em;font-size:1.02rem;white-space:nowrap}
.logo-mark{position:relative;width:20px;height:20px;border-radius:5px;background:var(--accent);flex:none;box-shadow:inset 0 0 0 1px rgba(15,21,18,.18)}
.logo-mark::after{content:"";position:absolute;inset:5px;background:var(--ink-900);border-radius:2px}
.searchbox{
  flex:1;max-width:420px;height:38px;
  display:flex;align-items:center;gap:8px;
  padding:0 12px;border-radius:var(--r-m);
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.14);
  transition:box-shadow .15s var(--ease),background .15s var(--ease);
}
.searchbox:focus-within{box-shadow:0 0 0 2px var(--accent);background:rgba(255,255,255,.14)}
.searchbox input{flex:1;height:100%;background:none;border:0;outline:none;color:#fff;font-size:.9rem}
.searchbox input::placeholder{color:rgba(255,255,255,.5)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.link-quiet{color:rgba(255,255,255,.75);font-size:.9rem;position:relative;padding:4px 0}
.link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.link-quiet:hover{color:#fff}
.link-quiet:hover::after{transform:scaleX(1)}

.btn-app{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);
  font-weight:650;font-size:.94rem;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),transform .15s var(--ease),box-shadow .22s var(--ease);
}
.btn-app:active{transform:scale(.985)}
.btn-accent{background:var(--accent);color:var(--ink-900)}
.btn-accent:hover{background:#b7e545;color:var(--ink-900)}
.btn-ghost{border-color:var(--line);background:transparent;color:var(--ink-900)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-app svg{transition:transform .22s var(--ease)}
.btn-app:hover svg{transform:translateX(3px)}
.brandbar .btn-app{height:36px;padding:0 16px;font-size:.88rem}

.channelbar{background:var(--paper);border-bottom:1px solid var(--line)}
.channel-nav{display:flex;justify-content:center;gap:6px;min-height:52px;align-items:center}
.channel-nav a{
  position:relative;padding:9px 16px;border-radius:var(--r-m);
  color:var(--ink-500);font-size:.94rem;font-weight:600;white-space:nowrap;
  transition:color .15s var(--ease),background .15s var(--ease);
}
.channel-nav a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;
  transition:transform .22s var(--ease);
}
.channel-nav a:hover{color:var(--ink-900)}
.channel-nav a:hover::after{transform:scaleX(1)}
.channel-nav a.active{background:var(--ink-900);color:var(--paper)}
.channel-nav a.active::after{display:none}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--tint{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.75rem;font-weight:700;letter-spacing:.14em;
  color:var(--ink-500);margin-bottom:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--accent);border-radius:2px}
.h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.28;letter-spacing:-.005em}
.section-sub{margin-top:12px;color:var(--ink-500);font-size:.98rem;max-width:640px}

/* ---------- 页头区 ---------- */
.page-hero{padding:36px 0 52px;background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--ink-300);margin-bottom:22px}
.crumbs a{color:var(--ink-500)}
.crumbs a:hover{color:var(--ink-900);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}
.crumbs .sep{color:var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:end}
.page-hero h1{
  font-size:clamp(2rem,4.6vw,3.2rem);
  font-weight:800;line-height:1.18;letter-spacing:-.01em;max-width:16em;
}
.hero-lede{margin-top:16px;max-width:620px;color:var(--ink-500);font-size:1.02rem;line-height:1.9}
.hero-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:22px;display:flex;flex-direction:column;gap:10px;
}
.hero-side .row-label{font-size:.78rem;letter-spacing:.08em;color:var(--ink-300);font-weight:700}
.hero-side strong{font-size:1.05rem;color:var(--ink-900);font-weight:700;line-height:1.5}

.tag{
  display:inline-block;font-size:.75rem;letter-spacing:.06em;font-weight:600;
  padding:4px 10px;border-radius:var(--r-s);
  background:var(--surface-2);color:var(--ink-700);
}
.tag--warn{color:var(--accent-2);border:1px solid rgba(255,107,74,.45);background:rgba(255,107,74,.08)}
.tag--dark{background:rgba(15,21,18,.06)}

/* ---------- 可折叠说明块 ---------- */
.fold-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.fold{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.fold:hover{box-shadow:var(--sh-2)}
.fold[open]{box-shadow:var(--sh-2)}
.fold summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 24px;font-size:1.02rem;font-weight:650;color:var(--ink-900);line-height:1.5;
}
.fold summary::-webkit-details-marker{display:none}
.fold[open] summary{box-shadow:inset 2px 0 0 var(--accent);border-bottom:1px solid var(--line)}
.fold summary .fold-icon{
  margin-left:auto;flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--surface-2);position:relative;
}
.fold summary .fold-icon::before,
.fold summary .fold-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-700);
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.fold summary .fold-icon::before{width:12px;height:2px}
.fold summary .fold-icon::after{width:2px;height:12px}
.fold[open] summary .fold-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.fold-body{padding:18px 24px 24px;font-size:.95rem;color:var(--ink-500);line-height:1.85}
.fold-body strong{color:var(--ink-900);font-weight:650}
.fold-body ul{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.fold-body li{position:relative;padding-left:18px}
.fold-body li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start}

.feature{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);margin-bottom:24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.feature-media{position:relative;overflow:hidden;background:var(--surface-2)}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .32s var(--ease)}
.feature:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:24px;display:flex;flex-direction:column;gap:10px}
.feature-body h3{font-size:1.14rem;font-weight:650;line-height:1.45}
.feature-body p{font-size:.9rem;color:var(--ink-500);line-height:1.8}
.feature-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.8rem;color:var(--ink-300);padding-top:10px;border-top:1px solid var(--line)}
.feature-meta a{color:var(--ink-900);font-weight:650}
.feature-meta a:hover{color:var(--ink-900);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}

.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.entry{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;display:flex;flex-direction:column;gap:10px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.entry h3{font-size:1.02rem;font-weight:650;line-height:1.45}
.entry p{font-size:.88rem;color:var(--ink-500);line-height:1.75}
.entry-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:.8rem;color:var(--ink-300);font-family:var(--font-num);
}
.entry-meta a{color:var(--ink-900);font-weight:650;font-family:var(--font-sans)}
.entry-meta a:hover{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}

/* ---------- 侧边常见问题卡 ---------- */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:24px;position:sticky;top:132px;
}
.side-card>h2{font-size:1.12rem;font-weight:700;line-height:1.45}
.side-card>p{margin-top:8px;font-size:.86rem;color:var(--ink-500)}
.faq-list{margin-top:16px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:flex-start;gap:10px;
  padding:14px 0;font-size:.95rem;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:padding .22s var(--ease),color .15s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ink-900)}
.faq-item[open] summary{box-shadow:inset 2px 0 0 var(--accent);padding-left:12px}
.faq-a{padding:0 0 14px 12px;font-size:.88rem;color:var(--ink-500);line-height:1.8}
.side-note{
  margin-top:18px;padding:16px;border-radius:var(--r-m);
  background:var(--surface-2);font-size:.85rem;color:var(--ink-500);line-height:1.8;
}
.side-note strong{display:block;color:var(--ink-900);font-size:.92rem;margin-bottom:6px}

/* ---------- 步骤 ---------- */
.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-l);padding:28px 24px 24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step .bar{position:absolute;top:0;left:24px;width:36px;height:4px;border-radius:0 0 4px 4px;background:var(--accent)}
.step .step-num{font-family:var(--font-num);font-size:2.4rem;font-weight:800;line-height:1;color:var(--ink-900);letter-spacing:-.02em}
.step h3{font-size:1rem;font-weight:650;margin-top:10px;line-height:1.5}
.step p{margin-top:8px;font-size:.88rem;color:var(--ink-500);line-height:1.8}

/* ---------- 深色说明带 ---------- */
.band-dark{
  background:linear-gradient(rgba(15,21,18,.92),rgba(15,21,18,.96)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#fff;padding:84px 0;
}
.band-dark .h2{color:#fff}
.band-dark .section-sub{color:rgba(255,255,255,.7)}
.band-dark .eyebrow{color:rgba(255,255,255,.6)}
.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-l);padding:26px;
}
.stat b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:800;line-height:1.1;color:#fff}
.stat span{display:block;margin-top:10px;font-size:.9rem;color:rgba(255,255,255,.7);line-height:1.8}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.35}
.cta-band p{margin-top:10px;color:var(--ink-500);font-size:.95rem;max-width:34em}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:rgba(255,255,255,.72);
  padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{margin-top:14px;font-size:.9rem;line-height:1.9;color:rgba(255,255,255,.6);max-width:330px}
.site-footer h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:14px;letter-spacing:.02em}
.site-footer a{display:block;font-size:.9rem;color:rgba(255,255,255,.66);padding:5px 0}
.site-footer a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in{opacity:1;transform:none}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .split{grid-template-columns:minmax(0,1fr)}
  .side-card{position:static}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid{grid-template-columns:minmax(0,1fr) 280px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .hero-grid{grid-template-columns:minmax(0,1fr);align-items:start;gap:24px}
  .hero-side{flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .searchbox{display:none}
  .brand-actions{gap:12px}
  .link-quiet{display:none}
  .brandbar .btn-app{height:34px;padding:0 14px}
  .channelbar .container{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px}
  .channelbar .container::-webkit-scrollbar{display:none}
  .channel-nav{justify-content:flex-start;min-height:50px}
  .page-hero{padding:28px 0 40px}
  .fold-grid{grid-template-columns:minmax(0,1fr)}
  .feature{grid-template-columns:minmax(0,1fr)}
  .feature-media img{aspect-ratio:16/9}
  .cta-band{padding:32px 24px}
  .btn-app{width:100%;max-width:320px}
  .cta-actions{width:100%}
}
@media (max-width:575px){
  .entry-grid{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .hero-side{flex-direction:column;align-items:flex-start}
  .feature-body{padding:20px}
  .section{padding:48px 0}
}