/* roulang page: index */
:root{
  --brand-600:#1D6FE0;
  --brand-500:#2F86F0;
  --brand-100:#D7E7FF;
  --brand-50:#EEF5FF;
  --accent-500:#FF7A2F;
  --accent-50:#FFF3EA;
  --ok-500:#12B5A5;
  --ink-900:#0F1B2D;
  --ink-700:#33475F;
  --ink-500:#6B7C93;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E3EAF3;
  --deep:#123A6B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.04),0 8px 24px -12px rgba(15,27,45,.12);
  --shadow-lg:0 12px 32px -12px rgba(15,27,45,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.page-body{
  margin:0;
  padding-bottom:72px;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
}
@media(min-width:1024px){body.page-body{padding-bottom:0}}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
.tnum{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media(max-width:640px){.container{padding-left:16px;padding-right:16px}}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(15,27,45,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
@media(min-width:1024px){.header-inner{height:72px}}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:32px;height:32px;flex:none}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.5px;color:var(--ink-900);white-space:nowrap}
@media(min-width:1024px){.brand-text{font-size:18px}}
.main-nav{display:none}
@media(min-width:1024px){.main-nav{display:flex;align-items:center;gap:30px}}
.nav-link{position:relative;padding:6px 2px;font-size:15px;font-weight:500;color:var(--ink-700);transition:color .18s ease-out}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand-600)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-btn);font-weight:600;cursor:pointer;text-align:center;transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out}
.btn:active{transform:scale(.98)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-md{height:44px;padding:0 20px;font-size:15px}
.btn-lg{height:48px;padding:0 24px;font-size:16px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -14px rgba(29,111,224,.9)}
.btn-primary:hover{background:#185FC7;transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--brand-100);color:var(--brand-600)}
.btn-outline:hover{border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0}
.btn-ghost:hover{text-decoration:underline}
.btn-block{width:100%}
.btn-light{background:#fff;color:var(--brand-600)}
.btn-light:hover{background:#EAF2FF;transform:translateY(-1px)}

/* ---------- generic ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.3px;padding:4px 12px}
.badge-brand{background:var(--brand-50);color:var(--brand-600)}
.badge-accent{background:var(--accent-500);color:#fff}
.badge-ok{background:#E4F8F5;color:var(--ok-500)}
.badge-mute{background:#EFF3F8;color:var(--ink-500)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.card:hover{transform:translateY(-2px);border-color:var(--brand-100);box-shadow:var(--shadow-lg)}
.sec{padding:48px 0}
@media(min-width:1024px){.sec{padding:88px 0}}
.sec-alt{background:var(--surface)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.sec-title{position:relative;padding-left:14px;font-size:clamp(23px,3.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.2px;color:var(--ink-900)}
.sec-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand-600)}
.sec-desc{padding-left:14px;margin-top:8px;font-size:15px;color:var(--ink-500)}
.divider{height:1px;background:var(--line);border:0}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:36px 0 44px;background:linear-gradient(180deg,var(--brand-50) 0%,#FFFFFF 100%)}
@media(min-width:1024px){.hero{padding:64px 0 80px}}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(29,111,224,.06) 1px,transparent 1px);background-size:18px 18px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:5fr 7fr;gap:48px;min-height:520px}}
.hero-title{margin:14px 0 0;font-size:clamp(28px,5vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.2px;color:var(--ink-900)}
.hero-sub{margin-top:14px;font-size:clamp(15px,2.2vw,18px);color:var(--ink-700);max-width:34rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:14px 22px;margin-top:26px;padding:0;list-style:none}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.hero-points svg{width:16px;height:16px;flex:none;color:var(--ok-500)}
.hero-media{position:relative;border-radius:var(--r-lg);background:var(--brand-50);padding:12px;box-shadow:var(--shadow-sm)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;background:#DCE6F2}

/* ---------- trust ---------- */
.trust-bar{background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding:22px 0}
@media(min-width:768px){.trust-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.trust-num{font-size:24px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2}
.trust-label{font-size:13px;color:var(--ink-500);margin-top:4px}

/* ---------- ladder ---------- */
.ladder{position:relative;padding-left:28px;margin:0;list-style:none}
.ladder::before{content:"";position:absolute;left:9px;top:16px;bottom:16px;border-left:2px dashed var(--brand-100)}
.ladder-item{position:relative;margin-bottom:16px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,border-color .18s ease-out}
.ladder-item:hover{transform:translateY(-2px);border-color:var(--brand-100)}
.ladder-item::before{content:"";position:absolute;left:-28px;top:26px;width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--brand-100)}
.ladder-item.is-current::before{border-color:var(--brand-600);background:var(--brand-600)}
.ladder-item.is-top{background:var(--accent-50);border-color:#FFD9BF}
.ladder-item.is-top::before{border-color:var(--accent-500);background:var(--accent-500)}
.ladder-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.ladder-name{font-size:18px;font-weight:600;color:var(--ink-900)}
.ladder-text{margin-top:6px;font-size:15px;color:var(--ink-700)}
.ladder-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--ink-500)}
.ladder-link{font-size:14px;font-weight:600;color:var(--brand-600)}
.ladder-link:hover{text-decoration:underline}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.plan-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.plan-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.plan-card{position:relative;display:flex;flex-direction:column;padding:26px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.plan-card:hover{transform:translateY(-2px);border-color:var(--brand-100);box-shadow:var(--shadow-lg)}
.plan-card.is-featured{border:1.5px solid var(--brand-500);overflow:hidden}
@media(min-width:1024px){
  .plan-card.is-featured{transform:translateY(-8px)}
  .plan-card.is-featured:hover{transform:translateY(-10px)}
}
.plan-flag{position:absolute;top:0;left:24px;padding:3px 12px;font-size:12px;font-weight:500;letter-spacing:.3px;color:#fff;background:var(--accent-500);border-radius:0 0 10px 10px}
.plan-name{margin-top:12px;font-size:18px;font-weight:600;color:var(--ink-900)}
.plan-price{margin-top:12px;font-size:34px;font-weight:700;line-height:1.1;color:var(--ink-900);font-variant-numeric:tabular-nums}
.plan-price small{font-size:14px;font-weight:500;color:var(--ink-500);margin-left:6px}
.plan-note{margin-top:6px;font-size:13px;color:var(--ink-500)}
.plan-feat{margin:18px 0 22px;padding:0;list-style:none;flex:1}
.plan-feat li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;font-size:15px;border-bottom:1px dashed var(--line)}
.plan-feat li:last-child{border-bottom:0}
.plan-feat .yes{color:var(--brand-600)}
.plan-feat .no{color:var(--ink-500)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:1024px){.news-grid{grid-template-columns:6fr 6fr;gap:24px}}
.news-side{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.news-side{grid-template-columns:repeat(2,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.news-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--shadow-lg)}
.news-cover{aspect-ratio:4/3;overflow:hidden;background:#DCE6F2}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:8px;padding:18px 20px 20px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:14px;color:var(--ink-700);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:10px;font-size:13px;color:var(--ink-500)}
.news-foot .more{font-weight:600;color:var(--brand-600)}
.news-lead .news-cover{aspect-ratio:16/10}
.news-lead .news-title{font-size:20px}
.news-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;padding:32px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card)}
.news-empty p{font-size:14px;color:var(--ink-500);margin:0}

/* ---------- countdown banner ---------- */
.countdown-banner{display:grid;grid-template-columns:1fr;gap:22px;padding:28px 24px;background:var(--deep);border-radius:var(--r-lg);color:#fff}
@media(min-width:1024px){.countdown-banner{grid-template-columns:1fr auto auto;align-items:center;gap:36px;padding:34px 40px}}
.cd-title{font-size:clamp(20px,2.6vw,24px);font-weight:700;line-height:1.4}
.cd-sub{margin-top:8px;font-size:13px;color:rgba(255,255,255,.72)}
.cd-clock{display:flex;gap:10px;justify-content:center}
.cd-block{width:58px;padding:8px 0;text-align:center;background:rgba(255,255,255,.08);border-radius:10px}
.cd-num{display:block;font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2}
.cd-unit{display:block;font-size:11px;color:rgba(255,255,255,.7);letter-spacing:.3px}

/* ---------- form ---------- */
.consult-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.consult-grid{grid-template-columns:5fr 7fr;gap:48px}}
.consult-points{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:12px}
.consult-points li{display:flex;gap:10px;font-size:15px}
.consult-points svg{width:18px;height:18px;flex:none;margin-top:4px;color:var(--brand-600)}
.form-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}
@media(min-width:768px){.form-card{padding:32px}}
.form-row{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:768px){.form-row.two{grid-template-columns:repeat(2,1fr)}}
.form-field label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:var(--ink-900)}
.req{color:var(--accent-500)}
.form-control{width:100%;height:44px;padding:0 14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color .18s ease-out,box-shadow .18s ease-out}
.form-control::placeholder{color:var(--ink-500)}
.form-control:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(47,134,240,.12)}
select.form-control{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%236B7C93' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:40px}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-hint{margin-top:12px;font-size:12px;color:var(--ink-500)}
.form-feedback{margin-top:14px;font-size:14px;color:var(--ok-500);min-height:22px}

/* ---------- faq ---------- */
.faq-list{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:16px;min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item[open] summary{color:var(--brand-600)}
.faq-icon{flex:none;transition:transform .2s ease-out}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 0 18px;font-size:14px;line-height:1.8;color:var(--ink-700);max-width:56rem}

/* ---------- cta strip ---------- */
.cta-strip{display:flex;flex-direction:column;gap:18px;align-items:flex-start;padding:28px 24px;background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-lg)}
@media(min-width:1024px){.cta-strip{flex-direction:row;align-items:center;justify-content:space-between;padding:32px 40px}}

/* ---------- footer ---------- */
.site-footer{padding:48px 0 24px;background:var(--deep);color:#fff}
@media(min-width:1024px){.site-footer{padding:64px 0 28px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand span{font-size:18px;font-weight:700;letter-spacing:.5px}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:24rem}
.footer-title{font-size:15px;font-weight:600;margin-bottom:14px;color:#fff}
.footer-links{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.75);transition:color .18s ease-out}
.footer-links a:hover{color:#9CC6FF}
.footer-contact{margin:0;padding:0;list-style:none;display:grid;gap:12px;font-size:14px;color:rgba(255,255,255,.75)}
.footer-contact strong{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.55)}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- mobile tab ---------- */
.mobile-tab{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -14px rgba(15,27,45,.45);padding-bottom:env(safe-area-inset-bottom)}
@media(min-width:1024px){.mobile-tab{display:none}}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:60px;font-size:10px;letter-spacing:.3px;color:var(--ink-500);transition:color .18s ease-out}
.tab-item svg{width:24px;height:24px}
.tab-item.active{color:var(--brand-600)}
.tab-ico-wrap{display:flex;align-items:center;justify-content:center;width:32px;height:24px;border-radius:999px;transition:background-color .18s ease-out}
.tab-item.active .tab-ico-wrap{background:var(--brand-50)}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover,.news-card:hover,.plan-card:hover,.ladder-item:hover,.btn:hover{transform:none !important}
}

/* roulang page: article */
:root{
  --brand-600:#1D6FE0;
  --brand-500:#2F86F0;
  --brand-100:#D7E7FF;
  --brand-50:#EEF5FF;
  --accent-500:#FF7A2F;
  --accent-50:#FFF3EA;
  --ok-500:#12B5A5;
  --ink-900:#0F1B2D;
  --ink-700:#33475F;
  --ink-500:#6B7C93;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E3EAF3;
  --deep:#123A6B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(15,27,45,.04);
  --sh-md:0 8px 24px -12px rgba(15,27,45,.12);
  --sh-lg:0 12px 32px -12px rgba(15,27,45,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;padding:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-700);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
svg{display:block}
html body a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:#185FC7;color:#fff}
.btn-outline{background:#fff;border-color:var(--brand-100);color:var(--brand-600)}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50)}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0 8px}
.btn-ghost:hover{text-decoration:underline}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.3px;white-space:nowrap}
.badge-brand{background:var(--brand-50);color:var(--brand-600)}
.badge-accent{background:var(--accent-500);color:#fff}
.badge-neutral{background:#EDF2F8;color:var(--ink-500)}
.badge-ok{background:rgba(18,181,165,.12);color:var(--ok-500)}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(15,27,45,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;flex-shrink:0}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:var(--ink-900)}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand-600)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 22px -16px rgba(15,27,45,.4);padding-bottom:env(safe-area-inset-bottom)}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:60px;font-size:10px;font-weight:500;color:var(--ink-500)}
.tab-item svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tab-item:hover,.tab-item:active{color:var(--brand-600)}

/* ---------- 文章标题区 ---------- */
.article-hero{background:linear-gradient(180deg,var(--brand-50) 0%,#FFFFFF 100%);border-bottom:1px solid var(--line);padding:44px 0 40px}
.hero-inner{max-width:920px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:18px}
.breadcrumb a{color:var(--brand-600)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:#B6C4D6}
.breadcrumb .current{color:var(--ink-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:340px}
.article-title{font-size:clamp(28px,3.4vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.2px;color:var(--ink-900);margin:0 0 20px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-500)}
.meta-dot{width:3px;height:3px;border-radius:50%;background:#C6D2E0}
.article-meta time{font-variant-numeric:tabular-nums}

/* ---------- 正文 ---------- */
.article-main{background:#fff;padding:52px 0 8px}
.article-wrap{max-width:800px;margin:0 auto}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700)}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(23px,2.4vw,30px);font-weight:700;line-height:1.35;color:var(--ink-900);margin:44px 0 16px;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand-600)}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--brand-600);margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body li{margin-bottom:.5em}
.article-body ul li::marker{color:var(--brand-600)}
.article-body ol li::marker{color:var(--brand-600);font-weight:600}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#185FC7}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body img{border-radius:12px;margin:20px auto;max-width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px}
.article-body blockquote{margin:24px 0;padding:16px 20px;background:#F7FAFE;border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;color:var(--ink-700)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg);color:var(--ink-900);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body pre{background:var(--bg);border-radius:10px;padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:var(--bg);padding:2px 6px;border-radius:6px}
.article-body pre code{background:transparent;padding:0}

/* ---------- 文末操作 ---------- */
.article-foot{margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:500;transition:background-color .18s ease-out}
.tag:hover{background:var(--brand-100)}
.article-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500)}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink-500);transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out}
.icon-btn:hover{border-color:var(--brand-100);color:var(--brand-600);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 空态 ---------- */
.article-empty{min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;padding:32px 0}
.article-empty svg{width:96px;height:96px;color:var(--brand-500);opacity:.4}
.article-empty h2{font-size:20px;font-weight:700;color:var(--ink-900);margin:0}
.article-empty p{margin:0;font-size:14px;color:var(--ink-500)}

/* ---------- 相关内容 ---------- */
.related{background:var(--bg);padding:72px 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{position:relative;font-size:clamp(23px,2.4vw,30px);font-weight:700;color:var(--ink-900);line-height:1.3;margin:0;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand-600)}
.section-head .link-more{font-size:14px;font-weight:500;color:var(--brand-600);white-space:nowrap}
.section-head .link-more:hover{text-decoration:underline}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.post-card:hover{transform:translateY(-2px);border-color:var(--brand-100);box-shadow:var(--sh-lg)}
.post-cover{aspect-ratio:4/3;width:100%;object-fit:cover;background:var(--bg)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a{color:inherit}
.post-card:hover .post-title a{color:var(--brand-600)}
.post-desc{font-size:14px;line-height:1.7;color:var(--ink-500);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500)}
.post-meta time{font-variant-numeric:tabular-nums}
.post-meta .read-more{font-weight:500;color:var(--brand-600)}
.post-meta .read-more:hover{text-decoration:underline}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--brand-50);padding:44px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;border-radius:var(--r-lg);background:#fff;border:1px solid var(--brand-100);padding:28px 32px;box-shadow:var(--sh-md)}
.cta-text h2{font-size:20px;font-weight:700;color:var(--ink-900);margin:0 0 6px}
.cta-text p{font-size:14px;color:var(--ink-500);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#DCE7F5;padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand span{font-size:18px;font-weight:700;letter-spacing:.4px;color:#fff}
.footer-about{font-size:13.5px;line-height:1.85;color:#AFC6E2;margin:0;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.3px}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:#C3D6EE}
.footer-links a:hover{color:#9CC6FF;text-decoration:underline}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;font-size:13.5px;color:#C3D6EE}
.footer-contact strong{display:block;color:#fff;font-weight:600;margin-bottom:2px;font-size:13px}
.footer-bottom{margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#93AECD}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:1023.98px){
  .main-nav{display:none}
  .header-inner{height:56px}
  .mobile-tabbar{display:flex}
  html body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .article-hero{padding:28px 0 26px}
  .article-title{-webkit-line-clamp:3;margin-bottom:14px}
  .breadcrumb .current{max-width:200px}
  .article-main{padding:32px 0 4px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{margin-top:34px;padding-left:12px}
  .related{padding:48px 0 56px}
  .section-head{margin-bottom:20px}
  .cta-inner{padding:22px 20px}
  .site-footer{padding:40px 0 20px}
  .footer-about{max-width:none}
}
@media (max-width:640px){
  .related-grid{grid-template-columns:1fr}
  .article-actions{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .article-body th,.article-body td{padding:8px 10px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .post-card:hover,.btn:hover,.icon-btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand-600:#1D6FE0;
  --brand-500:#2F86F0;
  --brand-100:#D7E7FF;
  --brand-50:#EEF5FF;
  --accent-500:#FF7A2F;
  --accent-50:#FFF3EA;
  --ok-500:#12B5A5;
  --ink-900:#0F1B2D;
  --ink-700:#33475F;
  --ink-500:#6B7C93;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E3EAF3;
  --deep:#123A6B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh:0 1px 2px rgba(15,27,45,.04), 0 8px 24px -12px rgba(15,27,45,.12);
  --sh-hover:0 12px 32px -12px rgba(15,27,45,.18);
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--t);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(15,27,45,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:32px;height:32px;flex:none;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:var(--ink-900);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:500;color:var(--ink-700);}
.nav-link:hover{color:var(--brand-600);}
.nav-link.active{color:var(--brand-600);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand-600);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh);}
.btn-primary:hover{background:#175FCB;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-hover);}
.btn-ghost{ background:#fff;color:var(--brand-600);border-color:var(--brand-100);}
.btn-ghost:hover{border-color:var(--brand-500);transform:translateY(-1px);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:scale(.98);}
.btn[disabled]{opacity:.45;cursor:not-allowed;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.btn-link:hover{text-decoration:underline;}
.btn-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 徽章 / 标签 ============ */
.tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.3px;border-radius:999px;padding:5px 12px;}
.tag-brand{background:var(--brand-50);color:var(--brand-600);border:1px solid var(--brand-100);}
.tag-accent{background:var(--accent-500);color:#fff;}
.tag-ok{background:#E6F8F6;color:var(--ok-500);}
.tag-mute{background:#EEF1F6;color:var(--ink-500);}

/* ============ 首屏横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-image:
    linear-gradient(96deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 44%, rgba(255,255,255,.60) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);
  gap:36px;align-items:center;min-height:264px;padding:42px 0 48px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--ink-500);}
.breadcrumb a{color:var(--brand-600);}
.breadcrumb a:hover{text-decoration:underline;}
.breadcrumb .sep{color:var(--ink-500);}
.breadcrumb .current{color:var(--ink-500);}
.page-hero h1{
  font-size:clamp(28px,4.1vw,44px);line-height:1.25;letter-spacing:-.2px;
  font-weight:700;color:var(--ink-900);margin:16px 0 14px;max-width:760px;
}
.page-hero .lead{font-size:16px;line-height:1.75;color:var(--ink-700);margin:0 0 22px;max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-shot{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh);}
.hero-shot img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ============ 板块基础 ============ */
.section{padding:84px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-title{
  position:relative;font-size:clamp(23px,3vw,30px);font-weight:700;line-height:1.3;
  color:var(--ink-900);margin:18px 0 12px;padding-top:12px;
}
.section-title::before{content:"";position:absolute;top:0;left:0;width:36px;height:4px;border-radius:2px;background:var(--brand-600);}
.section-desc{font-size:15.5px;color:var(--ink-500);margin:0;}
.h3{font-size:20px;font-weight:600;color:var(--ink-900);margin:0 0 8px;}

/* ============ 时间轴 ============ */
.tl-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px;align-items:start;}
.timeline{position:relative;padding-top:4px;}
.tl-item{position:relative;padding:0 0 34px 60px;}
.tl-item::before{content:"";position:absolute;left:17px;top:42px;bottom:-4px;border-left:2px dashed var(--brand-100);}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-node{
  position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  border:2px solid var(--brand-600);background:#fff;color:var(--brand-600);
}
.tl-item.is-active .tl-node{background:var(--brand-600);color:#fff;box-shadow:0 0 0 6px var(--brand-50);}
.tl-title{font-size:18px;font-weight:600;color:var(--ink-900);margin:4px 0 8px;}
.tl-text{font-size:15px;color:var(--ink-700);margin:0;}
.tl-text + .tl-text{margin-top:8px;}
.tl-media{margin:14px 0 0;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh);}
.tl-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.tl-media figcaption{font-size:13px;color:var(--ink-500);text-align:center;padding:8px 12px;}

.quick-card{
  position:sticky;top:96px;
  background:var(--brand-50);border:1px solid var(--brand-100);
  border-radius:var(--r-card);padding:24px;
}
.quick-title{font-size:17px;font-weight:600;color:var(--ink-900);margin:0 0 6px;}
.quick-sub{font-size:13px;color:var(--ink-500);margin:0 0 16px;}
.quick-list{border-top:1px solid var(--brand-100);margin-bottom:20px;}
.quick-list li{border-bottom:1px solid var(--brand-100);}
.quick-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 0;font-size:15px;font-weight:500;color:var(--ink-900);}
.quick-list a:hover{color:var(--brand-600);}
.quick-list a svg{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 双栏对比卡 ============ */
.duo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.term-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.term-card:hover{transform:translateY(-2px);border-color:var(--brand-100);box-shadow:var(--sh-hover);}
.term-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.term-icon{
  width:40px;height:40px;flex:none;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);
}
.term-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.term-card h3{font-size:20px;font-weight:600;color:var(--ink-900);margin:0;}
.term-card p{font-size:15px;margin:0 0 14px;color:var(--ink-700);}
.dot-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-700);margin-bottom:10px;line-height:1.7;}
.dot-list li:last-child{margin-bottom:0;}
.dot-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-500);}

/* ============ 行列表 ============ */
.check-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.check-col{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);}
.check-col-head{
  display:flex;align-items:center;gap:10px;
  padding:18px 20px;border-bottom:1px solid var(--line);background:var(--brand-50);
}
.check-col-head h3{font-size:17px;font-weight:600;color:var(--ink-900);margin:0;}
.check-col-head .tag{margin-left:auto;}
.row-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 20px;font-size:15px;border-bottom:1px solid var(--line);
  min-height:48px;transition:background-color var(--t);
}
.row-list li:last-child{border-bottom:none;}
.row-list li:hover{background:var(--brand-50);}
.row-list .mark{flex:none;width:20px;height:20px;margin-top:3px;stroke:var(--brand-600);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 提示卡 ============ */
.notice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.notice{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent-500);
  border-radius:12px;padding:20px 22px;box-shadow:var(--sh);
  transition:transform var(--t),box-shadow var(--t);
}
.notice:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.notice h3{font-size:16px;font-weight:600;color:var(--ink-900);margin:0 0 8px;display:flex;align-items:center;gap:8px;}
.notice h3 span{
  font-size:12px;font-weight:500;color:var(--accent-500);
  background:var(--accent-50);border-radius:999px;padding:2px 10px;
}
.notice p{margin:0;font-size:14.5px;color:var(--ink-700);}

/* ============ 数据条 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 28px;box-shadow:var(--sh);
}
.stat-cell{text-align:center;}
.stat-num{font-size:24px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.3;}
.stat-label{font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-lg);
  padding:36px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.6vw,26px);font-weight:700;color:var(--ink-900);margin:0 0 8px;line-height:1.35;}
.cta-band p{margin:0;font-size:15px;color:var(--ink-700);max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#E6EEF9;padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;letter-spacing:.5px;margin-bottom:14px;}
.footer-about{font-size:14px;color:#B9CDE6;margin:0;line-height:1.8;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 14px;}
.footer-links li + li{margin-top:10px;}
.footer-links a{font-size:14px;color:#B9CDE6;}
.footer-links a:hover{color:#9CC6FF;text-decoration:underline;}
.footer-contact li{font-size:14px;color:#B9CDE6;margin-bottom:12px;line-height:1.7;}
.footer-contact li:last-child{margin-bottom:0;}
.footer-contact strong{display:block;color:#fff;font-weight:600;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#9FB6D2;
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px -14px rgba(15,27,45,.35);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:10px;font-weight:500;color:var(--ink-500);
}
.mobile-tab a svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tab a.active{color:var(--brand-600);}
.mobile-tab a.active svg{stroke:var(--brand-600);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:26px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-inner{height:56px;}
  .brand-text{font-size:16px;}
  .tl-layout{grid-template-columns:1fr;gap:28px;}
  .quick-col{order:-1;}
  .quick-card{position:static;}
  .hero-shot{display:none;}
  .page-hero-inner{grid-template-columns:1fr;min-height:0;padding:32px 0 40px;}
  .section{padding:56px 0;}
  .mobile-tab{display:flex;}
  body.site-body{padding-bottom:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .duo-grid{grid-template-columns:1fr;}
  .check-cols{grid-template-columns:1fr;}
  .notice-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));padding:24px 18px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:26px;}
  .tl-item{padding-left:52px;}
  .tl-item::before{left:15px;top:40px;}
  .tl-node{width:32px;height:32px;font-size:14px;}
  .cta-band{padding:26px 20px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .term-card:hover,.notice:hover,.btn:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --brand-600:#1D6FE0;
  --brand-500:#2F86F0;
  --brand-100:#D7E7FF;
  --brand-50:#EEF5FF;
  --accent-500:#FF7A2F;
  --accent-50:#FFF3EA;
  --ok-500:#12B5A5;
  --ink-900:#0F1B2D;
  --ink-700:#33475F;
  --ink-500:#6B7C93;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E3EAF3;
  --deep:#123A6B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.04), 0 8px 24px -12px rgba(15,27,45,.12);
  --shadow-hover:0 12px 32px -12px rgba(15,27,45,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
input,select,textarea{outline:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
.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;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container{padding:0 24px;}}
.num{font-variant-numeric:tabular-nums;font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%);
}
.site-header.is-stuck{box-shadow:0 8px 24px -18px rgba(15,27,45,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;}
.brand-mark{width:32px;height:32px;flex:0 0 32px;}
.brand-text{font-size:16px;letter-spacing:.5px;font-weight:700;line-height:1;}
.main-nav{display:none;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-700);transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.active{color:var(--brand-600);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
}
@media (min-width:1024px){
  .header-inner{height:72px;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;}
  .brand-text{font-size:18px;}
  .main-nav{display:flex;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:scale(.98);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px -12px rgba(29,111,224,.9);}
.btn-primary:hover{background:#1559b8;color:#fff;}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--brand-100);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50);}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0 4px;height:auto;}
.btn-ghost:hover{text-decoration:underline;transform:none;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.3px;line-height:1.6;
}
.badge-brand{background:var(--brand-50);color:var(--brand-600);}
.badge-accent{background:var(--accent-500);color:#fff;}
.badge-ok{background:rgba(18,181,165,.12);color:#0d8b7f;}
.badge-muted{background:#EEF1F6;color:var(--ink-500);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:#fff;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center right;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 46%,rgba(255,255,255,.58) 100%);
}
.page-hero-inner{position:relative;padding:38px 0 44px;max-width:760px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:14px;}
.breadcrumb a{color:var(--brand-600);}
.breadcrumb a:hover{text-decoration:underline;}
.hero-title{
  font-size:clamp(28px,4.6vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.2px;color:var(--ink-900);
}
.hero-sub{margin-top:14px;font-size:16px;line-height:1.8;color:var(--ink-700);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-700);}
.hero-points svg{flex:0 0 18px;color:var(--brand-600);}
@media (min-width:768px){
  .page-hero-inner{padding:60px 0 70px;}
}

/* ---------- sections ---------- */
.section{padding:48px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
@media (min-width:768px){.section{padding:80px 0;}}
.section-head{max-width:720px;margin-bottom:26px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{
  position:relative;font-size:clamp(23px,3vw,30px);font-weight:700;line-height:1.3;color:var(--ink-900);
  padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:var(--brand-600);
}
.section-head.center .section-title{padding-left:0;padding-top:14px;}
.section-head.center .section-title::before{left:50%;top:0;transform:translateX(-50%);width:36px;height:4px;bottom:auto;}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-500);line-height:1.8;}
.section-head.center .section-sub{margin-left:auto;margin-right:auto;}

/* ---------- plan cards ---------- */
.plan-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){
  .plan-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .plan-card.is-featured{transform:translateY(-8px);}
}
@media (min-width:1024px){
  .plan-grid{grid-template-columns:repeat(3,1fr);}
}
.plan-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px 24px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
.plan-card.is-featured{border:1.5px solid var(--brand-500);box-shadow:0 12px 32px -14px rgba(29,111,224,.35);}
.plan-card.is-featured:hover{transform:translateY(-10px);}
.plan-flag{
  position:absolute;top:0;left:22px;transform:translateY(-50%);
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:500;letter-spacing:.3px;
  padding:3px 12px;border-radius:0 0 8px 8px;
}
.plan-name{font-size:19px;font-weight:700;color:var(--ink-900);}
.plan-desc{margin-top:6px;font-size:13px;color:var(--ink-500);line-height:1.7;}
.plan-price{margin-top:18px;display:flex;align-items:flex-end;gap:6px;padding-bottom:18px;border-bottom:1px dashed var(--line);}
.plan-price .amount{font-size:34px;font-weight:700;color:var(--ink-900);line-height:1;}
.plan-price .unit{font-size:13px;color:var(--ink-500);padding-bottom:4px;}
.plan-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;flex:1;}
.plan-list li{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;font-size:14.5px;line-height:1.6;}
.plan-list .k{color:var(--ink-700);}
.plan-list .v{color:var(--ink-900);font-weight:600;white-space:nowrap;}
.plan-list .v.off{color:var(--ink-500);font-weight:400;}
.plan-cta{margin-top:22px;}

/* ---------- compare table (grid) ---------- */
.compare-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden;}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.compare{min-width:660px;}
.compare-row{
  display:grid;grid-template-columns:1.7fr repeat(3,1fr);
  align-items:center;min-height:52px;padding:0 20px;gap:8px;
  border-bottom:1px solid var(--line);font-size:14.5px;
}
.compare-row:last-child{border-bottom:0;}
.compare-row.is-stripe{background:#F9FBFE;}
.compare-row.is-head{
  min-height:64px;background:var(--brand-50);border-bottom:1px solid var(--brand-100);
  font-weight:600;color:var(--ink-900);
}
.compare-cell{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--ink-700);}
.compare-cell.first{justify-content:flex-start;font-weight:500;color:var(--ink-900);}
.compare-row.is-head .compare-cell{font-size:14px;}
.compare-row.is-head .compare-cell.col-2{color:var(--brand-600);}
.mark-yes{width:20px;height:20px;color:var(--brand-600);}
.mark-no{width:16px;height:2px;border-radius:2px;background:#C9D4E2;}
.compare-note{
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;
  padding:16px 20px;background:#fff;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);
}
.compare-scroll-hint{display:block;font-size:12.5px;color:var(--ink-500);margin-top:12px;}
@media (min-width:900px){.compare-scroll-hint{display:none;}}

/* ---------- feature split ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:48px;}}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-50);box-shadow:var(--shadow-sm);}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split-body h3{font-size:20px;font-weight:600;color:var(--ink-900);}
.split-list{margin-top:20px;display:flex;flex-direction:column;gap:16px;}
.split-list li{display:flex;gap:12px;}
.split-list .ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.split-list .txt strong{display:block;font-size:15.5px;font-weight:600;color:var(--ink-900);}
.split-list .txt span{display:block;font-size:14px;color:var(--ink-500);line-height:1.75;margin-top:2px;}

/* ---------- promo bar ---------- */
.promo{
  background:var(--accent-50);border:1px solid #FFDCC4;border-left:4px solid var(--accent-500);
  border-radius:var(--r-card);padding:20px 22px;
  display:grid;grid-template-columns:1fr;gap:18px;align-items:center;
}
@media (min-width:900px){.promo{grid-template-columns:1.4fr auto auto;gap:28px;}}
.promo h3{font-size:18px;font-weight:700;color:var(--ink-900);}
.promo p{margin-top:6px;font-size:13.5px;color:var(--ink-700);line-height:1.7;}
.countdown{display:flex;gap:8px;}
.countdown .cell{
  width:52px;padding:8px 0;border-radius:10px;background:#fff;border:1px solid #FFDCC4;text-align:center;
}
.countdown .v{display:block;font-size:19px;font-weight:700;color:#C9551A;line-height:1.2;}
.countdown .l{display:block;font-size:11px;color:var(--ink-500);letter-spacing:.4px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-lg);
  padding:28px 24px;display:grid;grid-template-columns:1fr;gap:20px;align-items:center;
}
@media (min-width:900px){.cta-band{grid-template-columns:1fr auto;padding:34px 36px;gap:32px;}}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink-900);line-height:1.35;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--ink-700);line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:#D6E4F7;margin-top:48px;}
@media (min-width:768px){.site-footer{margin-top:80px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:44px 0 32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:60px 0 44px;}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;letter-spacing:.5px;}
.footer-about{margin-top:14px;font-size:13.5px;line-height:1.8;color:#A9C4E4;max-width:360px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:13.5px;line-height:1.7;color:#A9C4E4;}
.footer-links a{color:#C8DCF5;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact strong{display:inline-block;min-width:72px;color:#E7F0FC;font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:13px;color:#9BB6D6;
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -16px rgba(15,27,45,.4);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:10px;color:var(--ink-500);transition:color .18s ease-out;
}
.mobile-tabbar a svg{width:24px;height:24px;stroke-width:1.6;color:currentColor;}
.mobile-tabbar a:hover{color:var(--brand-600);}
.mobile-tabbar a[aria-current="page"]{color:var(--brand-600);font-weight:600;}
.mobile-tabbar a[aria-current="page"] .tab-ico{background:var(--brand-50);}
.tab-ico{display:flex;align-items:center;justify-content:center;width:40px;height:26px;border-radius:8px;transition:background-color .18s ease-out;}
@media (min-width:1024px){.mobile-tabbar{display:none;}}
@media (max-width:1023px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px));}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;}
  .btn:hover,.plan-card:hover,.plan-card.is-featured:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --brand-600:#1D6FE0;
  --brand-500:#2F86F0;
  --brand-100:#D7E7FF;
  --brand-50:#EEF5FF;
  --accent-500:#FF7A2F;
  --accent-50:#FFF3EA;
  --ok-500:#12B5A5;
  --ink-900:#0F1B2D;
  --ink-700:#33475F;
  --ink-500:#6B7C93;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E3EAF3;
  --navy:#123A6B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px -12px rgba(15,27,45,.12);
  --sh-2:0 12px 32px -12px rgba(15,27,45,.18);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(15,27,45,.35);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{width:32px;height:32px;flex:0 0 32px;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;color:var(--ink-900);}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  border-radius:8px;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.active{color:var(--brand-600);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-cta{flex:0 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .16s ease-out,background-color .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out,color .16s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#1559BC;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{background:var(--surface);color:var(--brand-600);border-color:var(--brand-100);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50);transform:translateY(-1px);}
.btn-outline:active{transform:scale(.98);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 主体留白 ---------- */
.main-wrap{padding-bottom:16px;}

/* ---------- 英雄横幅 ---------- */
.cat-hero{
  position:relative;
  margin-top:24px;
  min-height:280px;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--brand-50);
  display:flex;align-items:flex-end;
  box-shadow:var(--sh-1);
}
.cat-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(238,245,255,.97) 0%,rgba(238,245,255,.88) 40%,rgba(238,245,255,.34) 72%,rgba(238,245,255,.12) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:40px 44px;max-width:760px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.3px;
  color:var(--brand-600);background:rgba(255,255,255,.86);
  border:1px solid var(--brand-100);border-radius:999px;
  padding:5px 14px;margin-bottom:16px;
}
.cat-hero h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:700;line-height:1.25;letter-spacing:-.2px;
  color:var(--ink-900);
  max-width:14em;
}
.cat-hero p.sub{
  margin-top:14px;font-size:16px;color:var(--ink-700);max-width:30em;
}
.hero-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 要点徽章条 ---------- */
.badge-strip{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:20px;
}
.badge-pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 18px;border-radius:999px;
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  color:var(--brand-600);
  font-size:13px;font-weight:500;letter-spacing:.3px;
}
.badge-pill svg{width:18px;height:18px;flex:0 0 18px;}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.sec-title{
  position:relative;
  font-size:clamp(23px,3vw,30px);
  font-weight:700;line-height:1.3;color:var(--ink-900);
  padding-top:14px;
}
.sec-title::before{
  content:"";position:absolute;top:0;left:0;width:34px;height:3px;border-radius:3px;background:var(--brand-600);
}
.sec-desc{margin-top:12px;font-size:15px;color:var(--ink-500);}

/* ---------- 双栏：问答 + 目录 ---------- */
.qa-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
@media (min-width:1024px){
  .qa-layout{grid-template-columns:7fr 5fr;}
}
.qa-main{min-width:0;}
.qa-group{margin-bottom:40px;}
.qa-group:last-child{margin-bottom:0;}
.qa-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:600;color:var(--ink-900);
  margin-bottom:8px;
}
.qa-group-title span.idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;
  background:var(--brand-50);color:var(--brand-600);
  font-size:13px;font-weight:700;
}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  min-height:56px;padding:18px 4px;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-icon{
  width:22px;height:22px;flex:0 0 22px;margin-top:3px;
  stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;
  transition:transform .2s ease-out;
}
.faq-icon .v-bar{transition:opacity .18s ease-out;}
.faq-item[open] .faq-icon .v-bar{opacity:0;}
.faq-item[open] summary{color:var(--brand-600);}
.faq-answer{
  padding:0 4px 20px;
  font-size:15px;line-height:1.85;color:var(--ink-700);
  max-width:62em;
}

/* ---------- 目录卡 ---------- */
.anchor-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
}
.anchor-card h3{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px;}
.anchor-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;}
.anchor-list a{
  position:relative;
  display:block;
  padding:9px 12px 9px 16px;
  font-size:14px;color:var(--ink-700);
  border-left:2px solid var(--line);
  white-space:nowrap;
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.anchor-list a:hover{color:var(--brand-600);border-left-color:var(--brand-500);background:var(--brand-50);}
.anchor-list a.is-current{color:var(--brand-600);border-left-color:var(--brand-600);font-weight:600;}
.anchor-help{
  margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--ink-500);line-height:1.8;
}
.anchor-help .btn{margin-top:14px;width:100%;}
@media (min-width:1024px){
  .anchor-card{position:sticky;top:96px;}
  .anchor-list{flex-direction:column;overflow:visible;}
  .anchor-list a{white-space:normal;}
}

/* ---------- 状态行列表 ---------- */
.row-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.row-item{
  display:flex;align-items:flex-start;gap:16px;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease-out;
}
.row-item:last-child{border-bottom:0;}
.row-item:hover{background:var(--brand-50);}
.row-item .row-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);border:1px solid var(--brand-100);
}
.row-item .row-icon svg{width:20px;height:20px;stroke:var(--brand-600);stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.row-body{flex:1;min-width:0;display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.row-title{font-size:16px;font-weight:600;color:var(--ink-900);}
.row-text{flex:1 1 100%;font-size:14.5px;color:var(--ink-700);}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.3px;
}
.tag-blue{background:var(--brand-50);color:var(--brand-600);}
.tag-ok{background:rgba(18,181,165,.12);color:#0E8C80;}
.tag-warn{background:var(--accent-50);color:#D8621C;}

/* ---------- 图文分区 ---------- */
.split{
  display:grid;gap:32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
}
@media (min-width:900px){.split{grid-template-columns:5fr 7fr;padding:36px;align-items:center;}}
.split-media img{width:100%;border-radius:12px;object-fit:cover;aspect-ratio:4/3;}
.split-body h2{margin-bottom:12px;}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-700);}
.check-list svg{width:20px;height:20px;flex:0 0 20px;margin-top:3px;stroke:var(--ok-500);stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.split-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-bar h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:var(--ink-900);line-height:1.35;}
.cta-bar p{margin-top:8px;font-size:14px;color:var(--ink-500);max-width:44em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy);color:#D9E6F7;margin-top:48px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;letter-spacing:.5px;}
.footer-about{margin-top:14px;font-size:13.5px;line-height:1.85;color:#B9CDE8;max-width:34em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.3px;}
.footer-links li,.footer-contact li{font-size:14px;margin-bottom:10px;color:#C6D8F0;}
.footer-links a{transition:color .18s ease-out;}
.footer-links a:hover{color:#9CC6FF;}
.footer-contact strong{display:block;color:#9CC6FF;font-weight:500;font-size:12.5px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#9FB6D6;
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{display:none;}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-inner{min-height:56px;gap:12px;}
  .brand-text{font-size:16px;}
  .section{padding:48px 0;}
  .section-tight{padding:36px 0;}
  .cat-hero{margin-top:16px;min-height:240px;}
  .cat-hero-inner{padding:26px 22px;}
  .cta-bar{padding:26px 22px;}
  .split{padding:22px;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px));}
  .mobile-tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:grid;grid-template-columns:repeat(4,1fr);
    height:60px;
    padding-bottom:env(safe-area-inset-bottom,0px);
    background:var(--surface);
    border-top:1px solid var(--line);
    box-shadow:0 -8px 24px -18px rgba(15,27,45,.45);
  }
  .tab-item{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    font-size:10px;color:var(--ink-500);
    transition:color .18s ease-out;
  }
  .tab-item svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item[aria-current="page"]{color:var(--brand-600);font-weight:600;}
  .tab-item[aria-current="page"] svg{stroke:var(--brand-600);}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero h1{font-size:26px;}
  .badge-pill{font-size:12.5px;padding:9px 14px;}
  .header-cta .btn{padding:0 12px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .btn:hover,.btn:active{transform:none;}
}