/* roulang page: index */
:root{
  --brand-900:#0A3F52; --brand-700:#0E5F79; --brand-600:#117C99; --brand-500:#1A93B0;
  --brand-300:#8FD0E0; --brand-200:#CDE8F1; --brand-100:#E4F2F7; --brand-50:#F3FAFC;
  --accent-600:#D9641F; --accent-500:#F08A3C;
  --ink:#0F1B24; --ink-2:#45596A; --ink-3:#7A8A97; --line:#E4EAF0; --bg:#F7F9FB;
  --sh-1:0 1px 2px rgba(15,27,36,.05);
  --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
  --sh-3:0 24px 60px -24px rgba(10,63,82,.28);
  --r-sm:10px; --r-md:16px; --r-lg:20px; --r-xl:24px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:#fff;color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.85;letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.tnum{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px}
@media(min-width:768px){.container{padding-inline:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 26px -20px rgba(10,63,82,.45)}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{position:relative;width:24px;height:24px;border-radius:9999px;background:var(--brand-600);flex:none}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:12px;height:12px;border-radius:9999px;
  border:2px solid #fff;border-right-color:transparent;border-bottom-color:transparent;transform:rotate(45deg);
}
.brand-text{font-size:17px;font-weight:600;color:var(--brand-900);letter-spacing:-.01em;white-space:nowrap}
.nav-pill{display:flex;align-items:center;gap:2px;background:var(--brand-50);border-radius:9999px;padding:4px}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 15px;border-radius:9999px;
  font-size:15px;color:var(--ink-2);white-space:nowrap;transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-link.active{background:var(--brand-600);color:#fff;font-weight:600}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.menu-btn:hover{background:var(--brand-50);border-color:var(--brand-300)}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-700)}
.menu-btn:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.drawer.open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;padding-inline:20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--brand-700);font-size:20px;line-height:1}
.drawer-nav{padding:8px 20px;overflow-y:auto;flex:1}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:56px;font-size:18px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
body.locked{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
  border-radius:12px;font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .22s ease-out,color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out,filter .22s ease-out;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -12px rgba(217,100,31,.7)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 14px 28px -14px rgba(217,100,31,.75)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-primary:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px}
.btn-secondary{height:44px;background:#fff;color:var(--brand-600);border-color:var(--brand-300)}
.btn-secondary:hover{background:var(--brand-50);transform:translateY(-1px)}
.btn-secondary:active{transform:translateY(0)}
.btn-secondary:focus-visible{outline:3px solid rgba(17,124,153,.2);outline-offset:2px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.72;cursor:not-allowed;transform:none;box-shadow:none}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;min-height:44px}
.link-arrow .arw{display:inline-block;transition:transform .22s ease-out}
.link-arrow:hover .arw{transform:translateX(4px)}

/* ---------- generic ---------- */
.section{padding-block:64px}
@media(min-width:768px){.section{padding-block:96px}}
.section-alt{background:var(--bg)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:9999px;
  background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;
}
.h2{font-size:clamp(26px,3.2vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--brand-900)}
.lead{font-size:16px;color:var(--ink-2);max-width:64ch}
.muted{color:var(--ink-3);font-size:15px}
.note{font-size:12px;color:var(--ink-3);line-height:1.7}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:9999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.badge-accent{background:#FDF0E6;color:var(--accent-600)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D5E6EE}
.card-lg{border-radius:var(--r-lg)}
.divider{height:1px;background:var(--line);border:0}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,var(--brand-50) 0%,#FFFFFF 62%)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(17,124,153,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(17,124,153,.06) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
}
.hero-inner{position:relative;padding-block:56px}
@media(min-width:768px){.hero-inner{padding-block:88px}}
.hero h1{
  font-size:clamp(30px,4.6vw,48px);line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--brand-900);
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:44ch}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:32px;max-width:520px}
.stat-num{font-size:26px;font-weight:700;color:var(--accent-500);line-height:1.2}
.stat-label{font-size:13px;color:var(--ink-3);margin-top:4px}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--r-xl);box-shadow:var(--sh-3);width:100%;height:auto;object-fit:cover;aspect-ratio:4/3}
.float-card{
  position:absolute;right:-6px;bottom:-18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:12px 16px;display:flex;align-items:center;gap:12px;max-width:290px;
}
.float-badge{
  width:38px;height:38px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex:none;
}
@media(max-width:520px){.float-card{position:static;margin-top:14px;max-width:none}}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
}
table.benefit{border-collapse:separate;border-spacing:0;width:100%;min-width:780px;font-size:15px}
.benefit th,.benefit td{padding:15px 16px;border-bottom:1px solid var(--line);text-align:center;vertical-align:middle}
.benefit thead th{background:var(--brand-100);color:var(--brand-900);font-weight:600;font-size:14px;position:relative;white-space:nowrap}
.benefit thead th:first-child{border-top-left-radius:18px}
.benefit thead th:last-child{border-top-right-radius:18px}
.benefit tbody tr{transition:background .18s ease}
.benefit tbody tr:hover{background:#F8FBFD}
.benefit tbody tr:last-child td{border-bottom:0}
.benefit .col-item{
  text-align:left;font-weight:600;color:var(--ink);position:sticky;left:0;background:#fff;z-index:2;white-space:nowrap;
}
.benefit thead .col-item{background:var(--brand-100);z-index:3}
.benefit tbody tr:hover .col-item{background:#F8FBFD}
.benefit .col-hot{border-left:1px solid var(--accent-500);border-right:1px solid var(--accent-500);background:#FFFDFB}
.benefit tbody tr:hover .col-hot{background:#FFF7F0}
.hot-flag{
  position:absolute;top:6px;right:8px;height:20px;padding:0 8px;border-radius:9999px;background:var(--accent-500);
  color:#fff;font-size:11px;font-weight:600;display:inline-flex;align-items:center;
}
.yes{color:var(--brand-600);font-weight:700}
.no{color:var(--ink-3)}
.num{font-weight:700;color:var(--brand-900)}
.cell-quiet{color:var(--ink-2)}

/* ---------- level cards ---------- */
.level-card{position:relative;display:flex;flex-direction:column;overflow:hidden;padding-top:4px}
.level-bar{height:4px;width:100%}
.level-card .level-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.level-name{font-size:19px;font-weight:700;color:var(--brand-900)}
.level-for{font-size:14px;color:var(--ink-3)}
.level-list{display:flex;flex-direction:column;gap:8px;margin-top:2px;flex:1}
.level-list li{display:flex;gap:8px;font-size:15px;color:var(--ink-2);line-height:1.7}
.level-list li::before{content:"✓";color:var(--brand-600);font-weight:700;flex:none}
.level-card.is-top{border:2px solid var(--accent-500)}
.corner-flag{
  position:absolute;top:14px;right:14px;height:24px;padding:0 10px;border-radius:9999px;background:var(--accent-500);
  color:#fff;font-size:12px;font-weight:600;display:inline-flex;align-items:center;
}

/* ---------- gallery ---------- */
.gal-card{position:relative;overflow:hidden;border-radius:var(--r-lg);box-shadow:var(--sh-1);border:1px solid var(--line);background:#fff}
.gal-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.gal-card:hover img{transform:scale(1.03)}
.gal-mask{
  position:absolute;inset:auto 0 0 0;height:62%;padding:18px 18px 16px;
  background:linear-gradient(180deg,rgba(10,63,82,0) 0%,rgba(10,63,82,.72) 60%,rgba(10,63,82,.88) 100%);
  display:flex;flex-direction:column;justify-content:flex-end;gap:8px;color:#fff;
}
.gal-title{font-size:17px;font-weight:600;line-height:1.5}
.gal-meta{font-size:13px;color:rgba(255,255,255,.82)}
.lock{
  position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:9999px;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);box-shadow:var(--sh-1);
}
.lock svg{width:16px;height:16px}

/* ---------- cms cards ---------- */
.cms-cover{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--brand-50);border-radius:var(--r-md) var(--r-md) 0 0}
.cms-cover-ph{aspect-ratio:16/9;width:100%;border-radius:var(--r-md) var(--r-md) 0 0;background:linear-gradient(135deg,var(--brand-50),var(--brand-100))}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.empty-card{
  border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;padding:44px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.empty-icon{width:48px;height:48px;border-radius:9999px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center}

/* ---------- voice cards ---------- */
.voice{display:flex;flex-direction:column;gap:14px;height:100%}
.voice-quote{font-size:15px;color:var(--ink-2);line-height:1.8}
.voice-user{display:flex;align-items:center;gap:10px;margin-top:auto}
.voice-avatar{width:36px;height:36px;border-radius:9999px;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex:none}
.stars{color:var(--accent-500);letter-spacing:2px;font-size:14px}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-left:3px solid transparent;border-radius:14px;
  box-shadow:var(--sh-1);padding:0 18px;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq details[open]{border-left-color:var(--accent-500);box-shadow:var(--sh-2)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);min-height:44px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .arrow{flex:none;color:var(--brand-600);transition:transform .25s ease;font-size:13px}
.faq details[open] summary .arrow{transform:rotate(180deg)}
.faq .answer{padding:0 0 18px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ---------- cta form ---------- */
.cta-band{
  position:relative;background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(17,124,153,.07) 0 1px,transparent 1px 14px);
}
.form-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:24px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field input,.field textarea{
  width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-300);box-shadow:0 0 0 3px rgba(205,232,241,.85)}
.field input::placeholder,.field textarea::placeholder{color:#A9B7C1}
.form-alert{display:flex;align-items:flex-start;gap:8px;border-radius:10px;padding:10px 12px;font-size:14px;line-height:1.7;margin-bottom:14px}
.form-alert.success{background:var(--brand-50);border:1px solid var(--brand-300);color:var(--brand-700)}
.form-alert.error{background:#FDF1EC;border:1px solid #F3C4A9;color:#A8481A}
.privacy-note{font-size:12px;color:var(--ink-3);margin-top:12px;line-height:1.7}
.guarantee{display:flex;gap:12px;align-items:flex-start}
.guarantee-icon{width:34px;height:34px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--brand-600);display:flex;align-items:center;justify-content:center;flex:none}

/* ---------- footer ---------- */
.site-footer{background:#0E2A33;color:#C7D6DC;padding-block:56px 24px;font-size:15px}
.site-footer h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.site-footer a{color:#C7D6DC;transition:color .2s ease;display:inline-flex;min-height:32px;align-items:center}
.site-footer a:hover{color:var(--accent-500)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid rgba(199,214,220,.18);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8FA7B0;
}
.footer-brand-text{color:#fff;font-weight:600;font-size:17px}

/* roulang page: article */
:root{
  --brand-900:#0A3F52; --brand-700:#0E5F79; --brand-600:#117C99; --brand-500:#1A93B0;
  --brand-300:#8FD0E0; --brand-100:#E4F2F7; --brand-50:#F3FAFC;
  --accent-600:#D9641F; --accent-500:#F08A3C;
  --ink:#0F1B24; --ink-2:#45596A; --ink-3:#7A8A97;
  --line:#E4EAF0; --bg:#F7F9FB;
  --sh-1:0 1px 2px rgba(15,27,36,.05);
  --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
  --sh-3:0 24px 60px -24px rgba(10,63,82,.28);
  --radius:16px; --radius-lg:22px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.85;letter-spacing:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
time,.num{font-variant-numeric:tabular-nums;}
::selection{background:var(--brand-100);color:var(--brand-900);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#CFDCE3;border-radius:8px;border:2px solid #fff;}
::-webkit-scrollbar-track{background:transparent;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .container{padding:0 32px;} }

/* ---------- 吸顶导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .24s ease-out,border-color .24s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -14px rgba(10,63,82,.35);}
.brand{
  display:inline-flex;align-items:center;gap:10px;min-height:44px;
  font-size:17px;font-weight:600;color:var(--ink);letter-spacing:-.01em;
}
.brand-mark{
  width:24px;height:24px;border-radius:999px;background:var(--brand-600);
  position:relative;flex:0 0 auto;display:inline-block;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:999px;
  border:2px solid #fff;border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-45deg);
}
.nav-pill{
  display:flex;align-items:center;gap:2px;
  background:var(--brand-50);border-radius:999px;padding:4px;
}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 15px;border-radius:999px;
  font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700);}
.nav-link.active{background:var(--brand-600);color:#fff;}
.nav-link:focus-visible{outline:3px solid rgba(17,124,153,.25);outline-offset:2px;}
.hamburger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
  transition:background .2s,border-color .2s;
}
.hamburger:hover{background:var(--brand-50);border-color:var(--brand-300);}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.hamburger span::before{top:-6px;} .hamburger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,color .22s ease-out,filter .22s;
}
.btn-primary{background:var(--accent-500);color:#fff;}
.btn-primary:hover{background:var(--accent-600);box-shadow:0 12px 26px -12px rgba(217,100,31,.6);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-primary:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px;}
.btn-ghost{height:44px;background:#fff;color:var(--brand-600);border-color:var(--brand-300);}
.btn-ghost:hover{background:var(--brand-50);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-ghost:focus-visible{outline:3px solid rgba(17,124,153,.22);outline-offset:2px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-size:15px;font-weight:600;transition:color .2s;}
.text-link i{font-style:normal;transition:transform .22s ease-out;}
.text-link:hover{color:var(--brand-700);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:95;background:#fff;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s ease-out;
  display:flex;flex-direction:column;padding:16px 20px 28px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-nav{display:flex;flex-direction:column;margin:22px 0 24px;}
.drawer-nav a{
  font-size:18px;color:var(--ink);padding:15px 2px;border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-600);font-weight:600;}
.drawer-nav a:hover{color:var(--brand-600);}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);margin:0 auto 22px;max-width:46rem;
}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .sep{color:#C4D0D8;}

/* ---------- 文章头部 ---------- */
.article-wrap{max-width:46rem;margin:0 auto;}
.cat-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;
}
.article-title{
  font-size:clamp(26px,4vw,38px);line-height:1.35;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--ink-3);padding-bottom:22px;
}
.article-meta .dot{width:4px;height:4px;border-radius:999px;background:#CBD8DE;display:inline-block;}

/* ---------- 正文卡片 ---------- */
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px 20px;box-shadow:var(--sh-1);
}
@media (min-width:768px){ .article-card{padding:40px;} }
.article-body{font-size:17px;line-height:1.85;color:var(--ink-2);}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:24px;line-height:1.45;font-weight:700;color:var(--ink);
  margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand-600);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin:1.7em 0 .6em;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .5em;}
.article-body p{margin:0 0 1.2em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.25em;}
.article-body li{list-style:disc;margin:.45em 0;}
.article-body ol li{list-style:decimal;}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body img{border-radius:12px;margin:1.5em auto;}
.article-body figure{margin:1.5em 0;}
.article-body figure figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body blockquote{
  background:var(--brand-50);border-left:4px solid var(--accent-500);
  border-radius:0 12px 12px 0;padding:14px 18px;margin:1.5em 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;
  margin:1.5em 0;font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.article-body tr:hover td{background:#F8FBFD;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body code{
  background:var(--brand-50);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:14px;color:var(--brand-700);
}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:48px 18px;border:1px dashed var(--line);border-radius:16px;background:var(--brand-50);
}
.empty-state .empty-title{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.empty-state p.sub{font-size:15px;color:var(--ink-3);margin-bottom:20px;}

/* ---------- 板块通用 ---------- */
.section{padding:64px 0;}
@media (min-width:768px){ .section{padding:96px 0;} }
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,3vw,30px);font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.section-head .hint{font-size:15px;color:var(--ink-3);}

/* ---------- 相关推荐 ---------- */
.grid-3{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){ .grid-3{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .grid-3{grid-template-columns:repeat(3,1fr);} }
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-300);}
.rel-card:focus-visible{outline:3px solid rgba(17,124,153,.25);outline-offset:3px;}
.rel-thumb{position:relative;aspect-ratio:16/9;background:var(--brand-50);overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;}
.chip{
  align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;
}
.rel-body h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 上一篇 / 下一篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:768px){ .post-nav{grid-template-columns:1fr 1fr;} }
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:18px 20px;box-shadow:var(--sh-1);
  transition:border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out;
}
.post-nav-item:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--sh-2);}
.post-nav-label{font-size:13px;color:var(--ink-3);}
.post-nav-title{font-size:16px;font-weight:600;color:var(--ink);}

/* ---------- CTA ---------- */
.cta-strip{
  background:var(--brand-50);
  background-image:repeating-linear-gradient(135deg,rgba(17,124,153,.05) 0 12px,transparent 12px 24px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:flex;flex-direction:column;gap:26px;padding:52px 0;
}
@media (min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:64px 0;}
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.cta-inner p{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

.back-row{display:flex;justify-content:center;padding:40px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E2A33;color:#C7D6DC;padding:56px 0 0;margin-top:80px;}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.site-footer a{color:#C7D6DC;transition:color .2s ease-out;}
.site-footer a:hover{color:var(--accent-500);}
.site-footer .brand{color:#fff;min-height:auto;font-size:17px;}
.footer-brand-text{color:#fff;font-weight:600;}
.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;gap:40px;} }
.footer-grid p{font-size:15px;color:#C7D6DC;}
.footer-grid .note{font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(199,214,220,.16);margin-top:40px;padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8FA7B0;
}
@media (max-width:1023px){ .drawer{display:flex;} }

/* roulang page: category1 */
:root{
    --brand-900:#0A3F52; --brand-700:#0E5F79; --brand-600:#117C99; --brand-500:#1A93B0;
    --brand-300:#8FD0E0; --brand-100:#E4F2F7; --brand-50:#F3FAFC;
    --accent-600:#D9641F; --accent-500:#F08A3C;
    --ink:#0F1B24; --ink-2:#45596A; --ink-3:#7A8A97;
    --line:#E4EAF0; --bg:#F7F9FB; --white:#FFFFFF;
    --sh-1:0 1px 2px rgba(15,27,36,.05);
    --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
    --sh-3:0 24px 60px -24px rgba(10,63,82,.32);
    --r-sm:10px; --r-md:12px; --r-lg:16px; --r-xl:24px;
    --ease:220ms cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0; background:var(--bg); color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:15px; line-height:1.7; -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%; display:block}
  a{color:inherit; text-decoration:none}
  button,input,textarea{font:inherit; color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0; list-style:none}
  .num{font-variant-numeric:tabular-nums}

  .container{width:100%; max-width:1200px; margin:0 auto; padding-left:20px; padding-right:20px}
  @media (min-width:768px){ .container{padding-left:32px; padding-right:32px} }

  /* ---------- 品牌标 ---------- */
  .brand{display:inline-flex; align-items:center; gap:10px}
  .brand-mark{
    position:relative; width:24px; height:24px; flex:0 0 24px; border-radius:50%;
    background:var(--brand-600);
  }
  .brand-mark::after{
    content:""; position:absolute; inset:5px; border-radius:50%;
    border:2px solid #fff; border-color:#fff transparent transparent transparent;
    transform:rotate(42deg);
  }
  .brand-text{font-size:17px; font-weight:600; letter-spacing:-.01em; color:var(--brand-900)}
  .footer-brand-text{font-size:17px; font-weight:600; color:#fff}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky; top:0; z-index:50;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:border-color var(--ease), box-shadow var(--ease);
  }
  .site-header.is-scrolled{border-bottom-color:var(--line); box-shadow:var(--sh-1)}
  .header-inner{height:68px; display:flex; align-items:center; justify-content:space-between; gap:16px}
  .nav-pill{background:var(--brand-50); border-radius:999px; padding:4px; display:flex; align-items:center; gap:2px}
  .nav-link{
    display:inline-flex; align-items:center; height:36px; padding:0 16px; border-radius:999px;
    font-size:15px; color:var(--ink-2); white-space:nowrap; transition:background var(--ease), color var(--ease);
  }
  .nav-link:hover{background:var(--brand-100); color:var(--brand-700)}
  .nav-link.active{background:var(--brand-600); color:#fff}
  .header-actions{display:flex; align-items:center; gap:10px}

  .hamburger{
    width:44px; height:44px; border:1px solid var(--line); background:#fff; border-radius:12px;
    display:inline-flex; flex-direction:column; align-items:center; justify-content:center; gap:4px; cursor:pointer;
    transition:background var(--ease), border-color var(--ease);
  }
  .hamburger span{display:block; width:18px; height:2px; border-radius:2px; background:var(--brand-700)}
  .hamburger:hover{background:var(--brand-50); border-color:var(--brand-300)}

  /* ---------- 移动抽屉 ---------- */
  .mobile-drawer{
    position:fixed; inset:0; z-index:60; background:#fff;
    display:none; flex-direction:column; padding:16px 20px 24px;
  }
  .mobile-drawer.open{display:flex}
  .drawer-head{display:flex; align-items:center; justify-content:space-between; height:56px; border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px; height:44px; border-radius:12px; border:1px solid var(--line); background:#fff;
    font-size:22px; line-height:1; color:var(--brand-700); cursor:pointer;
  }
  .drawer-nav{display:flex; flex-direction:column; margin-top:8px}
  .drawer-link{
    font-size:18px; padding:16px 4px; border-bottom:1px solid var(--line); color:var(--ink-2);
    display:flex; align-items:center; justify-content:space-between; min-height:44px;
  }
  .drawer-link.active{color:var(--brand-600); font-weight:600}
  .drawer-foot{margin-top:auto; padding-top:20px; border-top:1px solid var(--line)}
  .drawer-foot p{font-size:13px; color:var(--ink-3); margin-top:12px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    height:48px; padding:0 24px; border-radius:var(--r-md); border:1px solid transparent;
    font-size:15px; font-weight:600; cursor:pointer; white-space:nowrap;
    transition:background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
  }
  .btn-primary{background:var(--accent-500); color:#fff}
  .btn-primary:hover{background:var(--accent-600); transform:translateY(-1px); box-shadow:0 10px 24px -12px rgba(217,100,31,.6)}
  .btn-primary:active{transform:translateY(0); filter:brightness(.96)}
  .btn-primary:focus-visible{outline:3px solid rgba(240,138,60,.28); outline-offset:2px}
  .btn-secondary{background:#fff; color:var(--brand-600); border-color:var(--brand-300)}
  .btn-secondary:hover{background:var(--brand-50); transform:translateY(-1px)}
  .btn-secondary:active{transform:translateY(0); filter:brightness(.98)}
  .btn-secondary:focus-visible{outline:3px solid rgba(17,124,153,.22); outline-offset:2px}
  .btn-sm{height:40px; padding:0 18px; font-size:15px}
  .btn-block{width:100%}
  .link-arrow{display:inline-flex; align-items:center; gap:6px; color:var(--brand-600); font-weight:600}
  .link-arrow span.arw{transition:transform var(--ease)}
  .link-arrow:hover span.arw{transform:translateX(4px)}

  /* ---------- Hero ---------- */
  .hero{
    position:relative; overflow:hidden;
    background-image:
      linear-gradient(rgba(17,124,153,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(17,124,153,.045) 1px, transparent 1px),
      linear-gradient(135deg, var(--brand-50) 0%, #FFFFFF 62%);
    background-size:32px 32px, 32px 32px, 100% 100%;
    padding:48px 0 56px;
  }
  @media (min-width:768px){ .hero{padding:64px 0 80px} }
  .hero-grid{display:grid; gap:40px; align-items:center}
  @media (min-width:1024px){ .hero-grid{grid-template-columns:6fr 5fr; gap:56px} }
  .hero h1{font-size:clamp(30px,4.6vw,48px); line-height:1.16; font-weight:700; letter-spacing:-.01em; color:var(--brand-900)}
  .hero-sub{margin-top:18px; font-size:17px; line-height:1.85; color:var(--ink-2); max-width:44ch}
  .hero-cta{margin-top:28px; display:flex; flex-wrap:wrap; gap:12px}
  .hero-stats{margin-top:36px; display:flex; flex-wrap:wrap; gap:32px}
  .hero-stat b{display:block; font-size:26px; font-weight:700; color:var(--accent-500); line-height:1.2}
  .hero-stat small{display:block; margin-top:4px; font-size:13px; color:var(--ink-3)}
  .hero-visual{position:relative; padding-bottom:20px}
  .hero-visual img{border-radius:var(--r-xl); box-shadow:var(--sh-3); width:100%; object-fit:cover}
  .hero-float{
    position:absolute; right:14px; bottom:-10px; background:#fff; border:1px solid var(--line);
    border-radius:var(--r-lg); box-shadow:var(--sh-2); padding:14px 16px; max-width:82%;
  }
  .float-badge{
    display:inline-block; font-size:12px; font-weight:600; color:#fff; background:var(--accent-500);
    border-radius:999px; padding:3px 10px;
  }
  .hero-float p{margin-top:8px; font-size:13px; color:var(--ink-2); line-height:1.6}

  /* ---------- 面包屑 ---------- */
  .crumb{font-size:13px; color:var(--ink-3); margin-bottom:18px; display:flex; flex-wrap:wrap; gap:6px; align-items:center}
  .crumb a:hover{color:var(--brand-600)}
  .crumb .sep{color:var(--brand-300)}

  /* ---------- 板块 ---------- */
  .section{padding:64px 0}
  @media (min-width:768px){ .section{padding:96px 0} }
  .section-alt{background:#fff}
  .sec-head{max-width:720px; margin-bottom:32px}
  .sec-head h2{font-size:28px; line-height:1.3; font-weight:700; letter-spacing:-.01em; color:var(--brand-900)}
  @media (min-width:768px){ .sec-head h2{font-size:32px} }
  .sec-head p{margin-top:12px; color:var(--ink-2); font-size:15px}
  .sec-head-row{display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:16px; max-width:none}

  /* ---------- 标签 ---------- */
  .tag{
    display:inline-flex; align-items:center; height:26px; padding:0 12px; border-radius:999px;
    background:var(--brand-100); color:var(--brand-700); font-size:13px; font-weight:600;
  }
  .tag-accent{background:#FDEFE3; color:var(--accent-600)}

  /* ---------- 对比表 ---------- */
  .table-shell{border:1px solid var(--line); border-radius:var(--r-lg); background:#fff; box-shadow:var(--sh-1); overflow:hidden}
  .table-scroll{overflow-x:auto; -webkit-overflow-scrolling:touch}
  .ctable{width:100%; min-width:920px; border-collapse:separate; border-spacing:0; font-size:15px}
  .ctable th,.ctable td{padding:14px 16px; text-align:left; border-bottom:1px solid var(--line); background:#fff; vertical-align:middle}
  .ctable thead th{
    background:var(--brand-100); color:var(--brand-900); font-weight:600; white-space:nowrap;
    border-bottom:1px solid var(--brand-300);
  }
  .ctable thead th:first-child{border-top-left-radius:var(--r-lg)}
  .ctable thead th:last-child{border-top-right-radius:var(--r-lg)}
  .ctable tbody tr:hover td{background:#F8FBFD}
  .ctable tbody tr:last-child td{border-bottom:none}
  .ctable th:first-child,.ctable td:first-child{
    position:sticky; left:0; z-index:2; font-weight:600; color:var(--ink);
    box-shadow:1px 0 0 var(--line); min-width:186px; white-space:nowrap;
  }
  .ctable thead th:first-child{z-index:3}
  .ctable th.col-rec,.ctable td.col-rec{
    background:#FFFCF8; border-left:1px solid rgba(240,138,60,.5); border-right:1px solid rgba(240,138,60,.5);
  }
  .ctable tbody tr:hover td.col-rec{background:#FFF8F1}
  .ctable thead th.col-rec{position:relative; background:var(--brand-100)}
  .rec-badge{
    position:absolute; top:6px; right:10px; font-size:11px; font-weight:600; line-height:1;
    padding:3px 7px; border-radius:999px; background:var(--accent-500); color:#fff;
  }
  .check{color:var(--brand-600); font-weight:700}
  .dash{color:var(--ink-3)}
  .cell-strong{font-weight:600; color:var(--brand-900)}
  .table-note{padding:14px 18px; font-size:12px; color:var(--ink-3); border-top:1px solid var(--line); background:#fff}

  /* ---------- 手风琴 ---------- */
  .acc{border:1px solid var(--line); border-radius:var(--r-lg); background:#fff; margin-bottom:12px; overflow:hidden; transition:box-shadow var(--ease)}
  .acc:hover{box-shadow:var(--sh-1)}
  .acc summary{
    list-style:none; cursor:pointer; padding:18px 20px 18px 22px;
    display:flex; align-items:center; justify-content:space-between; gap:14px;
    font-size:16px; font-weight:600; color:var(--brand-900); min-height:44px;
  }
  .acc summary::-webkit-details-marker{display:none}
  .acc summary .arw{
    flex:0 0 auto; width:10px; height:10px; border-right:2px solid var(--brand-600); border-bottom:2px solid var(--brand-600);
    transform:rotate(45deg); transition:transform var(--ease);
  }
  .acc[open] summary{border-left:3px solid var(--accent-500); padding-left:19px}
  .acc[open] summary .arw{transform:rotate(-135deg)}
  .acc-body{padding:0 22px 22px; color:var(--ink-2); font-size:15px; line-height:1.85}
  .acc-body ul{margin-top:6px; display:grid; gap:8px}
  .acc-body li{position:relative; padding-left:18px}
  .acc-body li::before{content:""; position:absolute; left:0; top:.66em; width:7px; height:7px; border-radius:50%; background:var(--brand-300)}
  .acc-body li b{color:var(--brand-900)}

  /* ---------- 卡片 ---------- */
  .card{
    background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); box-shadow:var(--sh-1);
    transition:transform var(--ease), box-shadow var(--ease), border-color var(--ease);
  }
  .card:hover{transform:translateY(-2px); box-shadow:var(--sh-2)}
  .card-body{padding:22px}
  .card-body h3{font-size:18px; font-weight:600; color:var(--brand-900)}
  .card-body p{margin-top:10px; font-size:15px; color:var(--ink-2)}
  .card-media{overflow:hidden; border-radius:var(--r-lg) var(--r-lg) 0 0}
  .card-media img{width:100%; aspect-ratio:16/10; object-fit:cover; transition:transform 300ms ease-out}
  .card:hover .card-media img{transform:scale(1.03)}
  .grid-3{display:grid; gap:20px}
  @media (min-width:640px){ .grid-3{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .grid-3{grid-template-columns:repeat(3,1fr); gap:24px} }

  /* ---------- 步骤 ---------- */
  .steps{display:grid; gap:20px; counter-reset:step}
  @media (min-width:768px){ .steps{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .steps{grid-template-columns:repeat(4,1fr)} }
  .step{background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); padding:22px; box-shadow:var(--sh-1); position:relative}
  .step-num{
    width:34px; height:34px; border-radius:50%; background:var(--brand-50); color:var(--brand-600);
    display:inline-flex; align-items:center; justify-content:center; font-weight:700; font-size:15px;
    border:1px solid var(--brand-300);
  }
  .step h3{margin-top:14px; font-size:17px; font-weight:600; color:var(--brand-900)}
  .step p{margin-top:8px; font-size:15px; color:var(--ink-2)}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:768px}
  .faq-item{border:1px solid var(--line); border-radius:var(--r-lg); background:#fff; margin-bottom:12px}
  .faq-item summary{
    list-style:none; cursor:pointer; padding:18px 20px; font-size:16px; font-weight:600; color:var(--brand-900);
    display:flex; align-items:center; justify-content:space-between; gap:14px; min-height:44px;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary .arw{
    flex:0 0 auto; width:10px; height:10px; border-right:2px solid var(--brand-600); border-bottom:2px solid var(--brand-600);
    transform:rotate(45deg); transition:transform var(--ease);
  }
  .faq-item[open] summary{border-left:3px solid var(--accent-500); padding-left:17px}
  .faq-item[open] summary .arw{transform:rotate(-135deg)}
  .faq-item .ans{padding:0 20px 20px; font-size:15px; line-height:1.85; color:var(--ink-2)}

  /* ---------- CTA 表单 ---------- */
  .cta-band{
    background:
      repeating-linear-gradient(135deg, rgba(17,124,153,.035) 0 12px, rgba(17,124,153,0) 12px 24px),
      var(--brand-50);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:64px 0;
  }
  @media (min-width:768px){ .cta-band{padding:88px 0} }
  .cta-grid{display:grid; gap:36px; align-items:start}
  @media (min-width:1024px){ .cta-grid{grid-template-columns:1fr 1fr; gap:56px} }
  .cta-copy h2{font-size:28px; font-weight:700; line-height:1.3; color:var(--brand-900)}
  @media (min-width:768px){ .cta-copy h2{font-size:32px} }
  .cta-copy p{margin-top:14px; font-size:17px; line-height:1.85; color:var(--ink-2); max-width:46ch}
  .cta-points{margin-top:24px; display:grid; gap:10px}
  .cta-points li{display:flex; gap:10px; align-items:flex-start; font-size:15px; color:var(--ink-2)}
  .cta-points li b{color:var(--brand-900)}
  .cta-points .dot{flex:0 0 auto; width:18px; height:18px; margin-top:3px; border-radius:50%; background:var(--brand-100); position:relative}
  .cta-points .dot::after{content:""; position:absolute; left:5px; top:5px; width:8px; height:8px; border-radius:50%; background:var(--brand-600)}

  .form-card{background:#fff; border:1px solid var(--line); border-radius:var(--r-xl); box-shadow:var(--sh-2); padding:26px}
  @media (min-width:768px){ .form-card{padding:32px} }
  .form-card h3{font-size:20px; font-weight:600; color:var(--brand-900)}
  .form-card .hint{margin-top:8px; font-size:13px; color:var(--ink-3)}
  .field{margin-top:18px}
  .field label{display:block; font-size:13px; font-weight:600; color:var(--ink-2); margin-bottom:8px}
  .field input,.field textarea{
    width:100%; height:44px; padding:0 14px; border:1px solid var(--line); border-radius:var(--r-sm);
    background:#fff; font-size:15px; transition:border-color var(--ease), box-shadow var(--ease);
  }
  .field textarea{height:96px; padding:12px 14px; resize:vertical; line-height:1.7}
  .field input:hover,.field textarea:hover{border-color:var(--brand-300)}
  .field input:focus,.field textarea:focus{
    outline:none; border-color:var(--brand-500); box-shadow:0 0 0 3px rgba(26,147,176,.18);
  }
  .form-card .submit-row{margin-top:22px}
  .form-card .privacy{margin-top:12px; font-size:12px; color:var(--ink-3); line-height:1.7}
  .state{display:none; margin-top:16px; border-radius:var(--r-sm); padding:12px 14px; font-size:14px; line-height:1.7}
  .state.is-success{display:block; background:var(--brand-50); border:1px solid var(--brand-300); color:var(--brand-700)}
  .state.is-error{display:block; background:#FDF3F1; border:1px solid #EBC8C0; color:#B4573F}
  .state.is-loading{display:block; background:#F4F6F8; border:1px solid var(--line); color:var(--ink-2)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0E2A33; color:#C7D6DC; padding:60px 0 24px; margin-top:0}
  .footer-grid{display:grid; gap:32px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr} }
  @media (max-width:767px){ .footer-grid{grid-template-columns:1fr 1fr} }
  @media (max-width:520px){ .footer-grid{grid-template-columns:1fr} }
  .site-footer h3{color:#fff; font-size:15px; font-weight:600; margin-bottom:14px}
  .site-footer a{color:#C7D6DC; font-size:14px; transition:color var(--ease)}
  .site-footer a:hover{color:var(--accent-500)}
  .site-footer li{font-size:14px}
  .site-footer p{font-size:14px}
  .note{font-size:12px}
  .footer-bottom{
    margin-top:40px; padding-top:20px; border-top:1px solid rgba(199,214,220,.16);
    display:flex; flex-wrap:wrap; gap:8px; justify-content:space-between; font-size:13px; color:#8FA7B0;
  }

  ::selection{background:rgba(26,147,176,.2)}
  :focus-visible{outline:3px solid rgba(17,124,153,.25); outline-offset:2px}

/* roulang page: category2 */
:root{
    --brand-900:#0A3F52;
    --brand-700:#0E5F79;
    --brand-600:#117C99;
    --brand-500:#1A93B0;
    --brand-300:#8FD0E0;
    --brand-200:#C7E6EF;
    --brand-100:#E4F2F7;
    --brand-50:#F3FAFC;
    --accent-600:#D9641F;
    --accent-500:#F08A3C;
    --ink:#0F1B24;
    --ink-2:#45596A;
    --ink-3:#7A8A97;
    --line:#E4EAF0;
    --bg:#F7F9FB;
    --r-sm:10px;
    --r-md:12px;
    --r-lg:16px;
    --r-xl:24px;
    --sh-1:0 1px 2px rgba(15,27,36,.05);
    --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
    --sh-3:0 30px 60px -28px rgba(10,63,82,.35);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:17px;
    line-height:1.85;
    color:var(--ink);
    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:var(--brand-600);text-decoration:none;transition:color .2s ease-out}
  a:hover{color:var(--accent-600)}
  button{font-family:inherit}
  input,textarea,select{font-family:inherit;font-size:16px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px} }

  /* ---------- 头部与导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    height:68px;
    background:rgba(255,255,255,.97);
    backdrop-filter:saturate(160%) blur(8px);
    border-bottom:1px solid transparent;
    transition:box-shadow .22s ease-out,border-color .22s ease-out;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
  .header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}

  .brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-900);font-weight:600;font-size:17px;letter-spacing:-.01em;text-decoration:none}
  .brand:hover{color:var(--brand-700)}
  .brand-mark{
    position:relative;flex:0 0 auto;width:24px;height:24px;border-radius:999px;
    background:var(--brand-600);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);
  }
  .brand-mark::after{
    content:"";position:absolute;left:5px;top:6px;width:14px;height:14px;border-radius:50%;
    border:2px solid transparent;border-top-color:#fff;transform:rotate(38deg);
  }

  .nav-pill{display:flex;align-items:center;gap:2px;background:var(--brand-50);border-radius:999px;padding:4px}
  .nav-link{
    display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
    font-size:15px;color:var(--ink-2);white-space:nowrap;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
  .nav-link.active{background:var(--brand-600);color:#fff}
  .nav-link.active:hover{background:var(--brand-700);color:#fff}
  .nav-link:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px}

  .header-right{display:flex;align-items:center;gap:12px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-md);
    font-size:16px;font-weight:600;text-decoration:none;border:1px solid transparent;
    cursor:pointer;transition:background .22s ease-out,color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out,filter .22s ease-out;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-1)}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(217,100,31,.6)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.96)}
  .btn-ghost{height:44px;background:#fff;color:var(--brand-600);border-color:var(--brand-300)}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0);filter:brightness(.97)}
  .btn:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px}
  .btn-sm{height:44px;padding:0 20px;font-size:15px}

  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
  .text-link span{transition:transform .2s ease-out}
  .text-link:hover span{transform:translateX(4px)}

  .nav-toggle{
    width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;
    display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;
  }
  .nav-toggle:hover{background:var(--brand-50)}
  .nav-toggle:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px}
  .nav-toggle i{position:relative;display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px}
  .nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-900);border-radius:2px}
  .nav-toggle i::before{top:-6px}
  .nav-toggle i::after{top:6px}

  .mobile-drawer{
    position:fixed;inset:0;z-index:60;background:#fff;display:flex;flex-direction:column;
    padding:18px 20px 24px;
  }
  .mobile-drawer[hidden]{display:none}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;height:44px;margin-bottom:12px}
  .drawer-close{
    width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-sm);
    font-size:20px;line-height:1;color:var(--ink-2);cursor:pointer;
  }
  .drawer-close:hover{background:var(--brand-50)}
  .drawer-links{display:flex;flex-direction:column;overflow-y:auto;flex:1}
  .drawer-links a{
    display:flex;align-items:center;min-height:52px;font-size:18px;color:var(--ink);
    border-bottom:1px solid var(--line);text-decoration:none;
  }
  .drawer-links a:hover{color:var(--brand-600)}
  .drawer-links a.active{color:var(--brand-600);font-weight:600}
  .drawer-foot{padding-top:16px;border-top:1px solid var(--line)}
  .drawer-foot .btn{width:100%}
  .drawer-foot p{margin-top:12px;font-size:13px;color:var(--ink-3);text-align:center}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:88px 0} }
  .section-alt{background:#fff}
  .section-head{max-width:760px;margin-bottom:32px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em;
  }
  .eyebrow-accent{background:rgba(240,138,60,.14);color:var(--accent-600)}
  h1{font-size:clamp(30px,4.6vw,48px);line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--brand-900)}
  h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--brand-900)}
  h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--brand-900)}
  .section-head p{margin-top:14px;color:var(--ink-2);font-size:17px;max-width:62ch}
  .muted{color:var(--ink-3);font-size:15px}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background-color:var(--brand-50);background-image:linear-gradient(160deg,#F3FAFC 0%,#FFFFFF 62%);padding:48px 0 60px}
  @media (min-width:768px){ .hero{padding:72px 0 92px} }
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(17,124,153,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(17,124,153,.055) 1px,transparent 1px);
    background-size:46px 46px;
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
    mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
  }
  .hero-grid{position:relative;display:grid;gap:40px;align-items:center}
  @media (min-width:1024px){ .hero-grid{grid-template-columns:7fr 5fr;gap:56px} }
  .hero h1{margin-top:18px}
  .hero-sub{margin-top:18px;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:34ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:40px;max-width:540px}
  .hero-stats .stat-num{font-size:30px;font-weight:700;color:var(--accent-500);line-height:1.2;letter-spacing:-.01em}
  .hero-stats .stat-label{font-size:13px;color:var(--ink-3);margin-top:4px;line-height:1.6}
  .hero-visual{position:relative}
  .hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-3)}
  .float-card{
    position:absolute;left:16px;bottom:-22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh-2);padding:14px 18px;display:flex;align-items:center;gap:12px;max-width:270px;
  }
  .float-card .fc-badge{
    flex:0 0 auto;width:38px;height:38px;border-radius:12px;background:rgba(240,138,60,.14);color:var(--accent-600);
    display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  }
  .float-card strong{display:block;font-size:15px;color:var(--brand-900)}
  .float-card span{font-size:13px;color:var(--ink-3);line-height:1.5}

  /* ---------- 卡片 ---------- */
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
    transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
  }
  .card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}

  .level-card{overflow:hidden;border-radius:var(--r-lg);display:flex;flex-direction:column}
  .level-card .bar{height:4px;flex:0 0 auto}
  .bar-1{background:var(--brand-100)}
  .bar-2{background:var(--brand-300)}
  .bar-3{background:var(--brand-500)}
  .bar-4{background:var(--brand-600)}
  .level-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
  .level-name{display:flex;align-items:baseline;gap:8px}
  .level-name .tag{
    font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-100);
    border-radius:999px;padding:2px 10px;
  }
  .level-audience{font-size:14px;color:var(--ink-3);margin-top:8px;line-height:1.7}
  .level-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;flex:1}
  .level-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-2);line-height:1.7}
  .level-list li::before{
    content:"";position:absolute;left:2px;top:9px;width:8px;height:5px;
    border-left:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
    transform:rotate(-45deg);border-radius:1px;
  }
  .level-card.featured{border:2px solid var(--accent-500);position:relative}
  .ribbon{
    position:absolute;right:14px;top:14px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;
    padding:3px 10px;border-radius:999px;
  }

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;margin-top:8px}
  .timeline::before{
    content:"";position:absolute;left:19px;top:10px;bottom:10px;width:2px;border-radius:2px;
    background:linear-gradient(180deg,var(--brand-100) 0%,var(--brand-300) 32%,var(--brand-500) 68%,var(--brand-600) 100%);
  }
  .tl-item{position:relative;padding-left:56px;padding-bottom:36px}
  .tl-item:last-child{padding-bottom:0}
  .tl-node{
    position:absolute;left:8px;top:22px;width:24px;height:24px;border-radius:999px;
    background:var(--brand-600);color:#fff;font-size:12px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 0 0 4px #fff,0 0 0 6px var(--brand-100);
    font-variant-numeric:tabular-nums;
  }
  .tl-node.accent{background:var(--accent-500);box-shadow:0 0 0 4px #fff,0 0 0 6px rgba(240,138,60,.22)}
  .tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);overflow:hidden}
  .tl-card:hover{box-shadow:var(--sh-2)}
  .tl-inner{display:grid;gap:0}
  @media (min-width:860px){ .tl-inner{grid-template-columns:minmax(0,5fr) minmax(0,7fr)} }
  .tl-media{position:relative;background:var(--brand-50)}
  .tl-media img{width:100%;height:100%;min-height:220px;aspect-ratio:16/10;object-fit:cover}
  @media (min-width:860px){ .tl-media img{aspect-ratio:auto;height:100%} }
  .tl-rev .tl-media{order:2}
  .tl-body{padding:26px 24px 28px}
  @media (min-width:860px){ .tl-body{padding:30px 32px 32px} }
  .tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
  .tl-head h3{font-size:20px}
  .chip{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
  }
  .chip-accent{background:rgba(240,138,60,.14);color:var(--accent-600);border-color:rgba(240,138,60,.25)}
  .tl-desc{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.85}
  .tl-facts{display:grid;gap:14px;margin-top:20px}
  @media (min-width:560px){ .tl-facts{grid-template-columns:repeat(3,minmax(0,1fr))} }
  .tl-fact{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-md);padding:14px 16px}
  .tl-fact dt{font-size:13px;color:var(--ink-3)}
  .tl-fact dd{margin:6px 0 0;font-size:15px;font-weight:600;color:var(--brand-900);line-height:1.6}
  .tl-points{margin-top:18px;display:flex;flex-direction:column;gap:8px}
  .tl-points li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2)}
  .tl-points li::before{
    content:"";position:absolute;left:2px;top:9px;width:8px;height:5px;
    border-left:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);transform:rotate(-45deg);
  }

  /* ---------- 表格 ---------- */
  .table-scroll{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);-webkit-overflow-scrolling:touch}
  .data-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15px}
  .data-table th,.data-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
  .data-table thead th{background:var(--brand-100);color:var(--brand-700);font-weight:600;font-size:14px}
  .data-table thead th:first-child{border-top-left-radius:var(--r-lg)}
  .data-table thead th:last-child{border-top-right-radius:var(--r-lg)}
  .data-table tbody tr:last-child td{border-bottom:0}
  .data-table tbody tr:hover td{background:#F8FBFD}
  .data-table th:first-child,.data-table td:first-child{
    position:sticky;left:0;background:#fff;font-weight:600;color:var(--brand-900);z-index:1;
    box-shadow:1px 0 0 var(--line);
  }
  .data-table thead th:first-child{background:var(--brand-100);color:var(--brand-700);z-index:2}
  .data-table tbody tr:hover td:first-child{background:#F8FBFD}
  .mark-yes{color:var(--brand-600);font-weight:600}
  .mark-no{color:var(--ink-3)}
  .mark-val{font-weight:600;color:var(--brand-900)}
  .table-note{margin-top:12px;font-size:12px;color:var(--ink-3);line-height:1.7}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px}
  .faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out}
  .faq details:hover{border-color:var(--brand-200)}
  .faq summary{
    list-style:none;cursor:pointer;padding:18px 20px;font-size:16px;font-weight:600;color:var(--brand-900);
    display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
  }
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{
    content:"";flex:0 0 auto;width:9px;height:9px;margin-right:4px;
    border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
    transform:rotate(45deg);transition:transform .22s ease-out;
  }
  .faq details[open]{border-color:var(--brand-200);box-shadow:var(--sh-1);border-left:3px solid var(--accent-500)}
  .faq details[open] summary::after{transform:rotate(-135deg)}
  .faq .faq-a{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-2)}
  .faq summary:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:-3px}

  /* ---------- CTA 与表单 ---------- */
  .cta-band{
    position:relative;background-color:var(--brand-50);
    background-image:repeating-linear-gradient(135deg,rgba(17,124,153,.045) 0 12px,transparent 12px 24px);
    border-top:1px solid var(--brand-100);border-bottom:1px solid var(--brand-100);
  }
  .cta-grid{display:grid;gap:36px;align-items:start}
  @media (min-width:1024px){ .cta-grid{grid-template-columns:6fr 6fr;gap:56px} }
  .cta-list{margin-top:22px;display:grid;gap:12px}
  .cta-list li{position:relative;padding-left:26px;font-size:16px;color:var(--ink-2)}
  .cta-list li::before{
    content:"";position:absolute;left:2px;top:8px;width:9px;height:6px;
    border-left:2px solid var(--accent-500);border-bottom:2px solid var(--accent-500);transform:rotate(-45deg);
  }

  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-2);padding:26px 24px 24px}
  @media (min-width:768px){ .form-card{padding:32px 32px 28px} }
  .field{margin-bottom:16px}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--brand-900);margin-bottom:8px}
  .field input,.field textarea{
    width:100%;min-height:44px;padding:11px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
    background:#FCFDFE;color:var(--ink);line-height:1.6;transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
  }
  .field textarea{resize:vertical;min-height:88px}
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
  .field input:focus,.field textarea:focus{
    outline:none;background:#fff;border-color:var(--brand-300);box-shadow:0 0 0 3px var(--brand-200);
  }
  .form-submit{width:100%;margin-top:6px}
  .form-submit[data-state="loading"]{opacity:.75;pointer-events:none}
  .form-status{margin-top:14px;font-size:14px;line-height:1.7;display:none}
  .form-status.is-show{display:block}
  .form-status.ok{background:var(--brand-50);border:1px solid var(--brand-200);color:var(--brand-700);border-radius:var(--r-sm);padding:10px 14px}
  .form-status.err{background:#FDF4F1;border:1px solid #EFD3C8;color:#A9502F;border-radius:var(--r-sm);padding:10px 14px}
  .form-note{margin-top:12px;font-size:12px;color:var(--ink-3);line-height:1.7}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0E2A33;color:#C7D6DC;padding:56px 0 24px;margin-top:0}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr} }
  @media (min-width:960px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr} }
  .site-footer h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:12px}
  .site-footer p{font-size:14px;line-height:1.85;color:#C7D6DC}
  .site-footer ul{display:flex;flex-direction:column;gap:4px}
  .site-footer ul li{font-size:14px;color:#C7D6DC;line-height:2.1}
  .site-footer a{color:#C7D6DC;font-size:14px;text-decoration:none}
  .site-footer a:hover{color:var(--accent-500)}
  .footer-brand-text{font-size:17px;font-weight:600;color:#fff}
  .site-footer .brand:hover .footer-brand-text{color:#fff}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8FA7B0;
  }
  .note{font-size:13px;line-height:1.7;color:var(--ink-3)}

  @media (max-width:520px){
    .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
    .float-card{left:10px;bottom:-18px;padding:12px 14px;max-width:230px}
  }

/* roulang page: category3 */
:root{
  --brand-900:#0A3F52; --brand-700:#0E5F79; --brand-600:#117C99; --brand-500:#1A93B0;
  --brand-300:#8FD0E0; --brand-200:#BFE3EC; --brand-100:#E4F2F7; --brand-50:#F3FAFC;
  --accent-600:#D9641F; --accent-500:#F08A3C;
  --ink:#0F1B24; --ink-2:#45596A; --ink-3:#7A8A97;
  --line:#E4EAF0; --bg:#F7F9FB; --white:#FFFFFF;
  --sh-1:0 1px 2px rgba(15,27,36,.05);
  --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
  --sh-3:0 24px 60px -24px rgba(10,63,82,.28);
  --radius:16px; --radius-lg:22px; --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.85;letter-spacing:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 页头 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 16px rgba(15,27,36,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:17px;color:var(--ink);letter-spacing:-.01em;min-height:44px}
.brand-mark{position:relative;width:24px;height:24px;border-radius:50%;background:var(--brand-600);flex:none}
.brand-mark::after{content:"";position:absolute;left:5px;top:5px;width:14px;height:14px;border-radius:50%;border:2px solid #fff;border-top-color:transparent;border-left-color:transparent;transform:rotate(22deg)}
.nav-pill{display:flex;align-items:center;gap:2px;padding:4px;background:var(--brand-50);border-radius:999px;border:1px solid var(--brand-100)}
.nav-link{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;font-size:15px;color:var(--ink-2);transition:background .18s ease,color .18s ease;white-space:nowrap}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-link.active{background:var(--brand-600);color:#fff;font-weight:600}
.nav-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.28)}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;color:var(--ink-2);transition:background .18s ease,border-color .18s ease}
.menu-toggle:hover{background:var(--brand-50);border-color:var(--brand-300)}
.menu-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.28)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,color .22s ease-out;white-space:nowrap}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -10px rgba(217,100,31,.65)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(217,100,31,.7)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(240,138,60,.28)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-300)}
.btn-ghost:hover{background:var(--brand-50)}
.btn-ghost:active{background:var(--brand-100)}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.24)}
.btn-sm{height:44px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;border-bottom:1px solid transparent;padding-bottom:2px}
.link-more span{transition:transform .2s ease-out}
.link-more:hover span{transform:translateX(4px)}
.link-more:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.2);border-radius:6px}

/* ---------- 通用排版 ---------- */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.h2{font-size:28px;line-height:1.32;font-weight:600;color:var(--ink);letter-spacing:-.01em}
@media (min-width:768px){.h2{font-size:32px}}
.h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5}
.lead{color:var(--ink-2);font-size:16px;line-height:1.85}
.muted{color:var(--ink-3);font-size:15px}
.note{font-size:12px;color:var(--ink-3);line-height:1.7}
.crumb{font-size:13px;color:var(--ink-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C3CFD8}
.stamp{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:8px;border:1px dashed var(--brand-300);background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.1em}
.rule-double{height:6px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;padding:48px 0 56px;background:linear-gradient(180deg,var(--brand-50) 0%,#FFFFFF 100%);border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.13}
.page-hero::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(0deg,rgba(17,124,153,.05) 0 1px,transparent 1px 26px)}
.page-hero > .container{position:relative;z-index:2}
.hero-title{font-size:clamp(30px,4.6vw,48px);line-height:1.18;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin:16px 0 14px}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:44ch;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.stat-num{display:block;font-size:26px;font-weight:700;color:var(--accent-500);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-label{font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative;margin-top:34px}
.hero-visual img{border-radius:var(--radius-lg);box-shadow:var(--sh-3);width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line)}
.float-card{position:absolute;right:-6px;bottom:-22px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-2);padding:14px 16px;max-width:250px}
@media (min-width:1024px){.hero-visual{margin-top:0}}
@media (min-width:768px){.float-card{right:-18px}}

/* ---------- 筛选胶囊 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 30px}
.chip{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:15px;cursor:pointer;transition:all .2s ease-out}
.chip:hover{border-color:var(--brand-300);background:var(--brand-50);color:var(--brand-700)}
.chip:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.22)}
.chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600}
.chip .count{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.chip.is-active .count{color:rgba(255,255,255,.78)}

/* ---------- 内容画廊 ---------- */
.gallery-grid{columns:1;column-gap:24px}
@media (min-width:640px){.gallery-grid{columns:2}}
@media (min-width:1024px){.gallery-grid{columns:3}}
.gcard{break-inside:avoid;margin:0 0 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out}
.gcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-200)}
.gcard-media{position:relative;overflow:hidden;background:var(--brand-50)}
.gcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.gcard:hover .gcard-media img{transform:scale(1.03)}
.as-45{aspect-ratio:4/5}
.as-43{aspect-ratio:4/3}
.as-11{aspect-ratio:1/1}
.as-34{aspect-ratio:3/4}
.gcard-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:58%;background:linear-gradient(180deg,rgba(14,42,51,0) 0%,rgba(14,42,51,.62) 100%);pointer-events:none}
.media-tag{position:absolute;left:12px;top:12px;z-index:2;background:rgba(255,255,255,.94);color:var(--brand-700);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;letter-spacing:.02em}
.media-title{position:absolute;left:14px;right:14px;bottom:12px;z-index:2;color:#fff;font-size:16px;font-weight:600;line-height:1.4;text-shadow:0 1px 8px rgba(14,42,51,.45)}
.lock-badge{position:absolute;right:12px;bottom:12px;z-index:3;width:32px;height:32px;border-radius:10px;background:rgba(14,42,51,.86);display:flex;align-items:center;justify-content:center;color:#fff;border:1px solid rgba(255,255,255,.28)}
.lock-badge.is-open{background:rgba(17,124,153,.9)}
.gcard-body{padding:16px 18px 18px}
.gcard-body p{font-size:15px;color:var(--ink-2);line-height:1.75;margin-top:6px}
.gcard-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-3)}
.gcard-foot b{color:var(--brand-700);font-variant-numeric:tabular-nums}
.gcard-foot.pad-right{padding-right:38px}
.empty-tip{display:none;text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:#fff}

/* ---------- 深色分区 ---------- */
.dark-band{background:#0E2A33;color:#C7D6DC;position:relative;overflow:hidden}
.dark-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(180deg,rgba(255,255,255,.03),transparent 55%),repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 96px)}
.dark-band > .container{position:relative;z-index:2}
.dark-band .h2{color:#fff}
.dark-band .lead{color:#9FB6BF}
.perm-row{display:grid;gap:20px;margin-top:34px;grid-template-columns:1fr}
@media (min-width:768px){.perm-row{grid-template-columns:repeat(3,1fr)}}
.perm-col{border:1px solid rgba(199,214,220,.22);border-radius:var(--radius);padding:22px;background:rgba(255,255,255,.03);transition:border-color .22s ease,background .22s ease}
.perm-col:hover{border-color:rgba(240,138,60,.55);background:rgba(255,255,255,.06)}
.perm-col h3{color:#fff;font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px}
.perm-col .tag{font-size:12px;color:#0E2A33;background:var(--brand-300);border-radius:999px;padding:2px 10px;font-weight:600}
.perm-col ul{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.perm-col li{display:flex;gap:9px;font-size:15px;line-height:1.7;color:#B9CCD3}
.perm-col li i{flex:none;width:16px;height:16px;margin-top:6px;border-radius:50%;background:var(--brand-300);display:inline-block;position:relative}
.perm-col li i::after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border:1.6px solid #0E2A33;border-top:0;border-left:0;transform:rotate(42deg)}
.perm-col.hl{border-color:rgba(240,138,60,.7);box-shadow:0 0 0 1px rgba(240,138,60,.28) inset}
.perm-col.hl .tag{background:var(--accent-500);color:#fff}

/* ---------- 更新日志 ---------- */
.log-list{display:grid;gap:16px;margin-top:30px}
@media (min-width:768px){.log-list{grid-template-columns:repeat(2,1fr)}}
.log-card{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out}
.log-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.log-date{flex:none;width:76px;border-right:1px dashed var(--line);padding-right:14px;text-align:left}
.log-date b{display:block;font-size:16px;color:var(--brand-700);font-variant-numeric:tabular-nums}
.log-date span{font-size:12px;color:var(--ink-3)}
.log-card p{font-size:15px;color:var(--ink-2);margin-top:6px;line-height:1.75}

/* ---------- 建议卡 ---------- */
.tip-grid{display:grid;gap:24px;margin-top:32px;grid-template-columns:1fr}
@media (min-width:768px){.tip-grid{grid-template-columns:repeat(3,1fr)}}
.tip-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 24px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out}
.tip-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-200)}
.tip-card .idx{position:absolute;top:-14px;left:22px;width:34px;height:34px;border-radius:11px;background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;box-shadow:0 8px 18px -10px rgba(10,63,82,.7)}
.tip-card h3{margin-top:14px}
.tip-card p{font-size:15px;color:var(--ink-2);margin-top:8px;line-height:1.78}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:32px auto 0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item[open]{border-color:var(--brand-200);box-shadow:var(--sh-1)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);transition:background .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--brand-50)}
.faq-item summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.22) inset}
.faq-item summary .arrow{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand-600);transition:transform .24s ease-out,background .24s ease-out}
.faq-item[open] summary .arrow{transform:rotate(180deg);background:var(--brand-100);border-color:var(--brand-200)}
.faq-item[open] summary{border-left:3px solid var(--accent-500)}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ---------- CTA + 表单 ---------- */
.cta-band{background:var(--brand-50);border-top:1px solid var(--brand-100);border-bottom:1px solid var(--brand-100);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(17,124,153,.05) 0 1px,transparent 1px 15px)}
.cta-band > .container{position:relative;z-index:2}
.cta-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media (min-width:1024px){.cta-grid{grid-template-columns:1.05fr .95fr;align-items:start}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--sh-3);padding:26px 22px}
@media (min-width:768px){.form-card{padding:30px 28px}}
.field{display:block;margin-bottom:16px}
.field > span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);padding:10px 14px;transition:border-color .18s ease,box-shadow .18s ease}
.field input{height:44px}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#A8B6C0}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(191,227,236,.9)}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:4px}
.state-tip{font-size:13px;border-radius:10px;padding:10px 14px;margin-top:14px;display:none}
.state-tip.ok{display:block;background:rgba(17,124,153,.1);color:var(--brand-700);border:1px solid var(--brand-200)}
.state-tip.err{display:block;background:rgba(190,80,80,.08);color:#A5544F;border:1px solid rgba(190,80,80,.25)}
.form-privacy{font-size:12px;color:var(--ink-3);margin-top:12px;line-height:1.7}
.cta-points{display:grid;gap:14px;margin-top:26px}
@media (min-width:640px){.cta-points{grid-template-columns:repeat(2,1fr)}}
.cta-point{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:var(--sh-1)}
.cta-point b{display:block;font-size:15px;color:var(--ink)}
.cta-point span{font-size:13px;color:var(--ink-3);line-height:1.7;display:block;margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E2A33;color:#C7D6DC;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr}}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;letter-spacing:.02em}
.site-footer a{color:#C7D6DC;transition:color .18s ease}
.site-footer a:hover{color:var(--accent-500)}
.site-footer li{font-size:14px;line-height:1.9;color:#A9BFC7}
.site-footer .brand{color:#fff;min-height:auto}
.site-footer .brand-mark{background:var(--brand-300)}
.site-footer .brand-mark::after{border-color:#0E2A33;border-top-color:transparent;border-left-color:transparent}
.footer-brand-text{font-weight:600;font-size:17px;color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;border-top:1px solid rgba(199,214,220,.18);margin-top:44px;padding-top:20px;font-size:13px;color:#8FA7B0}

/* ---------- 移动端抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;padding:18px 20px 24px}
.drawer[hidden]{display:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;min-height:52px}
.drawer-nav{flex:1;overflow-y:auto;margin-top:14px;border-top:1px solid var(--line)}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;font-size:18px;color:var(--ink);padding:16px 2px;border-bottom:1px solid var(--line)}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}
.drawer-foot{border-top:1px solid var(--line);padding-top:16px;margin-top:12px}
.drawer-foot p{font-size:13px;color:var(--ink-3);margin-top:12px;text-align:center}
.close-btn{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink-2)}
.close-btn:hover{background:var(--brand-50)}
.close-btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(17,124,153,.28)}
body.no-scroll{overflow:hidden}

/* roulang page: category4 */
:root{
  --brand-900:#0A3F52;
  --brand-700:#0E5F79;
  --brand-600:#117C99;
  --brand-500:#1A93B0;
  --brand-300:#8FD0E0;
  --brand-100:#E4F2F7;
  --brand-50:#F3FAFC;
  --accent-600:#D9641F;
  --accent-500:#F08A3C;
  --ink:#0F1B24;
  --ink-2:#45596A;
  --ink-3:#7A8A97;
  --line:#E4EAF0;
  --bg:#F7F9FB;
  --paper:#FFFDF9;
  --sh-1:0 1px 2px rgba(15,27,36,.05);
  --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
  --sh-3:0 24px 60px -24px rgba(10,63,82,.35);
  --hard:3px 3px 0 rgba(10,63,82,.14);
  --r-sm:10px;
  --r:12px;
  --r-card:16px;
  --r-lg:22px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px;border-radius:6px}
::selection{background:var(--brand-100);color:var(--brand-900)}
.tnum{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  transition:box-shadow .22s ease-out,border-color .22s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 22px -16px rgba(10,63,82,.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:24px;height:24px;flex:0 0 24px;border-radius:50%;
  background:var(--brand-600);position:relative;display:inline-block;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.45);
}
.brand-mark::after{
  content:"";position:absolute;left:5px;top:9px;width:13px;height:6px;
  border-bottom:2px solid #fff;border-radius:0 0 12px 12px;
}
.brand-text{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}

.nav-pill{
  display:flex;align-items:center;gap:2px;
  background:var(--brand-50);border-radius:999px;padding:4px;
  border:1px solid var(--brand-100);
}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);transition:background .18s ease-out,color .18s ease-out;
}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-link.active{background:var(--brand-600);color:#fff;font-weight:600}

.header-actions{display:flex;align-items:center;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -14px rgba(217,100,31,.9)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(217,100,31,.95)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-secondary{background:#fff;color:var(--brand-600);border:1px solid var(--brand-300)}
.btn-secondary:hover{background:var(--brand-50)}
.btn-secondary:active{filter:brightness(.97)}
.btn-sm{height:44px;padding:0 18px;font-size:15px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px}
.link-arrow span{transition:transform .2s ease-out}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 移动菜单 ---------- */
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fff;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.menu-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media (max-width:1023px){.menu-toggle{display:inline-flex}}

.mobile-menu{
  position:fixed;left:0;right:0;top:68px;bottom:0;background:#fff;z-index:55;
  overflow-y:auto;border-top:1px solid var(--line);
}
.mobile-menu-inner{display:flex;flex-direction:column;justify-content:space-between;min-height:100%;padding:16px 20px 28px}
.mobile-menu nav{display:flex;flex-direction:column}
.mm-link{
  display:flex;align-items:center;min-height:56px;font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mm-link.active{color:var(--brand-600);font-weight:600}
.mm-link.active::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--accent-500);margin-right:10px}
.mobile-menu-foot{display:flex;flex-direction:column;gap:12px;padding-top:22px}

/* ---------- 通用卡片 ---------- */
.r-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.r-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.log-card{
  background:var(--paper);border:1px solid rgba(10,63,82,.16);border-radius:var(--r-card);
  box-shadow:var(--hard);
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-accent{background:#FDEDE0;color:var(--accent-600)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--brand-900);
  background-image:linear-gradient(115deg,rgba(10,63,82,.94) 0%,rgba(14,95,121,.86) 48%,rgba(17,124,153,.72) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:56px 0 64px;
}
@media (min-width:768px){.page-hero{padding:72px 0 84px}}
.hero-grain{
  position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.14) 0 1px,transparent 1px 9px);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9FC0CC;position:relative}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:#6F94A2}
.hero-h1{
  position:relative;color:#fff;font-weight:700;letter-spacing:-.01em;
  font-size:clamp(28px,4.2vw,44px);line-height:1.28;margin-top:18px;
}
.hero-sub{position:relative;color:#CBE2EA;font-size:17px;max-width:56ch;margin-top:14px}
.hero-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{position:relative;display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:24px;border-top:1px solid rgba(199,214,220,.22)}
.hero-fact-num{font-size:26px;font-weight:700;color:var(--accent-500);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-fact-label{font-size:13px;color:#A9C6D0;margin-top:2px}

/* ---------- 锚点导航 ---------- */
.anchor-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (min-width:900px){.anchor-cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}}
.anchor-card{
  display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:var(--r-card);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.anchor-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-300)}
.anchor-card .num{font-size:12px;font-weight:700;color:var(--accent-600);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.anchor-card .ttl{font-size:16px;font-weight:600;color:var(--ink)}
.anchor-card .dsc{font-size:13px;color:var(--ink-3);line-height:1.7}

/* ---------- 侧栏 ---------- */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;
}
.side-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase}
.side-nav{display:flex;flex-direction:column;gap:2px;margin-top:12px}
.side-nav a{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:0 10px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-2);transition:background .18s ease-out,color .18s ease-out;
}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-300);flex:0 0 6px;transition:background .18s}
.side-nav a:hover{background:var(--brand-50);color:var(--brand-700)}
.side-nav a:hover::before{background:var(--accent-500)}

/* ---------- FAQ ---------- */
.faq-group-title{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.faq-group-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand-600);flex:0 0 4px}
.faq-group-desc{font-size:14px;color:var(--ink-3);margin-top:8px}
.faq-list{margin-top:16px}
.faq{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq+.faq{margin-top:12px}
.faq:hover{border-color:var(--brand-300)}
.faq[open]{border-color:var(--brand-300);box-shadow:var(--sh-2)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:17px 18px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  min-height:44px;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:0 0 12px;width:12px;height:12px;margin-left:auto;margin-top:7px;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .22s ease-out,border-color .22s ease-out;
}
.faq[open] summary::after{transform:rotate(-135deg);border-color:var(--accent-500)}
.faq[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--accent-500);border-radius:0 3px 3px 0;
}
.faq .answer{padding:0 18px 18px 18px;font-size:15px;color:var(--ink-2);line-height:1.85}
.faq .answer p+p{margin-top:.9em}

/* ---------- 相关入口卡 ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rel-card{overflow:hidden;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .22s ease-out,box-shadow .22s ease-out}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.rel-desc{font-size:15px;color:var(--ink-2);line-height:1.75}
.rel-foot{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line)}

/* ---------- CTA 表单 ---------- */
.cta-band{
  position:relative;overflow:hidden;background-color:var(--brand-50);
  background-image:repeating-linear-gradient(-45deg,rgba(17,124,153,.05) 0 2px,transparent 2px 12px);
  border-top:1px solid var(--brand-100);border-bottom:1px solid var(--brand-100);
  padding:56px 0;
}
@media (min-width:768px){.cta-band{padding:80px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 460px;gap:48px}}
.cta-h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.4}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.cta-points li{position:relative;padding-left:24px;font-size:15px;color:var(--ink-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-600);transform:rotate(45deg);
}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:24px}
@media (min-width:768px){.form-card{padding:28px}}
.field{display:flex;flex-direction:column;gap:8px}
.field+.field{margin-top:16px}
.field label{font-size:14px;font-weight:600;color:var(--ink-2)}
.field .req{color:var(--accent-600)}
.input,.textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.textarea{height:104px;padding:11px 14px;line-height:1.7;resize:vertical}
.input::placeholder,.textarea::placeholder{color:#A7B4BE}
.input:focus,.textarea:focus{outline:none;border-color:var(--brand-300);box-shadow:0 0 0 3px rgba(143,208,224,.35)}
.form-note{font-size:12px;color:var(--ink-3);margin-top:12px;line-height:1.7}
.form-state{margin-top:14px;border-radius:var(--r-sm);padding:11px 14px;font-size:14px;display:none}
.form-state.is-success{display:block;background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-300)}
.form-state.is-error{display:block;background:#FDF1F0;color:#A6402F;border:1px solid #EBC4BD}
.form-state.is-loading{display:block;background:#F4F6F8;color:var(--ink-2);border:1px solid var(--line)}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E2A33;color:#C7D6DC;padding:56px 0 28px;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin:0 0 14px;letter-spacing:.02em}
.site-footer a{color:#C7D6DC;font-size:15px;transition:color .18s ease-out}
.site-footer a:hover{color:var(--accent-500)}
.site-footer li{font-size:15px;line-height:1.9}
.footer-brand-text{color:#fff;font-size:17px;font-weight:600}
.site-footer .brand-mark{box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(199,214,220,.18);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:#8FA7B0;
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EEF3F6}
::-webkit-scrollbar-thumb{background:#B9CCD5;border-radius:8px;border:2px solid #EEF3F6}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500)}

.anchor-target{scroll-margin-top:96px}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category5 */
:root{
    --brand-900:#0A3F52; --brand-700:#0E5F79; --brand-600:#117C99; --brand-500:#1A93B0;
    --brand-300:#8FD0E0; --brand-100:#E4F2F7; --brand-50:#F3FAFC;
    --accent-600:#D9641F; --accent-500:#F08A3C;
    --ink:#0F1B24; --ink-2:#45596A; --ink-3:#7A8A97;
    --line:#E4EAF0; --bg:#F7F9FB; --white:#FFFFFF;
    --sh-1:0 1px 2px rgba(15,27,36,.05);
    --sh-2:0 10px 30px -12px rgba(17,124,153,.18);
    --sh-3:0 24px 60px -28px rgba(10,63,82,.35);
    --r-sm:10px; --r-md:12px; --r-lg:16px; --r-xl:24px;
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button,input,select,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0 0 1.2em}
  p:last-child{margin-bottom:0}
  h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em}
  :focus-visible{outline:3px solid rgba(240,138,60,.28);outline-offset:2px;border-radius:6px}
  ::selection{background:var(--brand-100);color:var(--brand-900)}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  .num{font-variant-numeric:tabular-nums}

  /* ---------- 头部 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:border-color .25s ease, box-shadow .25s ease;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
  .header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
  .header-right{display:flex;align-items:center;gap:12px}

  .brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
  .brand-mark{position:relative;width:24px;height:24px;border-radius:50%;background:var(--brand-600);flex:none}
  .brand-mark::after{
    content:"";position:absolute;inset:5px;border:2px solid #fff;border-radius:50%;
    border-right-color:transparent;border-bottom-color:transparent;transform:rotate(45deg);
  }
  .brand-text{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}

  .nav-pill{display:flex;align-items:center;gap:2px;padding:4px;background:var(--brand-50);border:1px solid var(--brand-100);border-radius:999px}
  .nav-link{
    display:inline-flex;align-items:center;min-height:38px;padding:8px 16px;border-radius:999px;
    font-size:15px;color:var(--ink-2);transition:background-color .2s ease,color .2s ease;
  }
  .nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
  .nav-link.active{background:var(--brand-600);color:#fff;font-weight:600}

  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:var(--r-md);
    background:#fff;border:1px solid var(--line);cursor:pointer;
    transition:background-color .2s ease,border-color .2s ease;
  }
  .nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-300)}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}
  @media (min-width:1024px){.nav-toggle{display:none}}

  .drawer{position:fixed;inset:0;z-index:80;display:none}
  .drawer.open{display:block}
  .drawer-mask{position:absolute;inset:0;background:rgba(14,42,51,.45)}
  .drawer-panel{
    position:absolute;inset:0;background:#fff;display:flex;flex-direction:column;
    padding:18px 20px 24px;overflow-y:auto;
  }
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:52px;margin-bottom:8px}
  .drawer-close{
    width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--line);background:#fff;
    display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;cursor:pointer;color:var(--ink-2);
  }
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:56px;padding:12px 4px;font-size:18px;border-bottom:1px solid var(--line);color:var(--ink-2);
  }
  .drawer-link.active{color:var(--brand-600);font-weight:600}
  .drawer-foot{margin-top:auto;padding-top:24px;display:grid;gap:12px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-md);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;
    transition:transform .22s ease-out,background-color .22s ease,box-shadow .22s ease,color .22s ease;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px -10px rgba(217,100,31,.7)}
  .btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(217,100,31,.75)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.96)}
  .btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-300)}
  .btn-ghost:hover{background:var(--brand-50)}
  .btn-ghost:active{filter:brightness(.97)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm)}
  .btn-block{width:100%}

  .arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px}
  .arrow-link i{font-style:normal;transition:transform .22s ease-out}
  .arrow-link:hover i{transform:translateX(4px)}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background:linear-gradient(125deg,var(--brand-50) 0%,#FFFFFF 62%)}
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(17,124,153,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(17,124,153,.06) 1px,transparent 1px);
    background-size:46px 46px;
    -webkit-mask-image:linear-gradient(to bottom,#000,transparent 72%);
    mask-image:linear-gradient(to bottom,#000,transparent 72%);
  }
  .hero-grid{position:relative;display:grid;gap:40px;padding:48px 0 56px;align-items:center}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:7fr 5fr;gap:56px;padding:84px 0 92px}
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border:1px dashed var(--brand-300);border-radius:999px;
    background:#fff;color:var(--brand-700);font-size:13px;letter-spacing:.02em;
  }
  .eyebrow b{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:block}
  .hero-title{font-size:clamp(30px,4.6vw,48px);line-height:1.18;font-weight:700;letter-spacing:-.01em;margin:18px 0 0}
  .hero-sub{margin:16px 0 0;font-size:17px;color:var(--ink-2);max-width:34ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--line)}
  .hero-stat b{display:block;font-size:26px;font-weight:700;color:var(--accent-500);line-height:1.2}
  .hero-stat span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px}

  .hero-visual{position:relative}
  .hero-visual img{width:100%;border-radius:var(--r-xl);box-shadow:var(--sh-3);border:1px solid var(--line);object-fit:cover;aspect-ratio:4/3}
  .hero-float{
    position:absolute;right:-8px;bottom:-18px;width:min(260px,80%);
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 16px;box-shadow:var(--sh-2);
  }
  @media (min-width:768px){.hero-float{right:-16px;bottom:-22px}}
  .hero-float-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--brand-700);font-weight:600}
  .badge-level{
    display:inline-flex;align-items:center;justify-content:center;
    padding:2px 10px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
    font-size:12px;font-weight:600;letter-spacing:.02em;
  }
  .hero-float p{margin:6px 0 0;font-size:13px;color:var(--ink-3);line-height:1.7}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:96px 0}}
  .section-tight{padding:48px 0}
  @media (min-width:768px){.section-tight{padding:72px 0}}
  .section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:760px}
  .h2{font-size:clamp(24px,3vw,32px);margin:0 0 12px}
  .h3{font-size:18px;font-weight:600;margin:0 0 6px}
  .lead{font-size:17px;color:var(--ink-2);line-height:1.85}
  .sec-note{font-size:15px;color:var(--ink-3)}
  .divider-wave{height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px);margin:28px 0}

  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
  }
  .card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--brand-100)}

  /* ---------- 步骤条 ---------- */
  .steps{display:grid;gap:16px}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}}
  .step{position:relative;padding:22px 18px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out}
  .step:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;
    background:var(--brand-600);color:#fff;font-weight:700;font-size:15px;box-shadow:0 8px 18px -10px rgba(17,124,153,.8);
  }
  .step h3{font-size:17px;margin:14px 0 6px}
  .step p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
  @media (min-width:1024px){
    .step:not(:last-child)::after{
      content:"";position:absolute;top:40px;right:-16px;width:16px;height:2px;
      background:repeating-linear-gradient(90deg,var(--brand-300) 0 4px,transparent 4px 8px);
    }
  }

  /* ---------- 清单 ---------- */
  .two-col{display:grid;gap:24px}
  @media (min-width:1024px){.two-col{grid-template-columns:1.15fr 1fr;gap:32px}}
  .panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1)}
  @media (min-width:768px){.panel{padding:30px}}
  .panel-dashed{border-style:dashed;border-color:var(--brand-300);background:var(--brand-50)}
  .list-check{display:grid;gap:12px}
  .list-check li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);line-height:1.8}
  .list-check li::before{
    content:"✓";flex:none;width:20px;height:20px;margin-top:5px;border-radius:50%;
    background:var(--brand-100);border:1px solid var(--brand-300);color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;
  }
  .meta-row{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
  .meta-row:last-child{border-bottom:none;padding-bottom:0}
  .meta-row span:first-child{color:var(--ink-2)}
  .meta-row span:last-child{font-weight:600;color:var(--brand-700)}

  /* ---------- 表单 ---------- */
  .band{position:relative;overflow:hidden;background:var(--brand-50);border-top:1px solid var(--brand-100);border-bottom:1px solid var(--brand-100)}
  .band::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(143,208,224,.16) 0 2px,transparent 2px 12px);
  }
  .band > .container{position:relative;z-index:1}
  .form-grid{display:grid;gap:32px;align-items:start}
  @media (min-width:1024px){.form-grid{grid-template-columns:1fr 1fr;gap:48px}}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--sh-2)}
  @media (min-width:768px){.form-card{padding:30px}}
  .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
  .field label{font-size:14px;font-weight:600;color:var(--ink)}
  .field .hint{font-size:12px;color:var(--ink-3);line-height:1.7}
  .field input,.field textarea{
    width:100%;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;
    padding:0 14px;height:44px;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.75;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:#A9B7C0}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-300);box-shadow:0 0 0 3px rgba(143,208,224,.35)}
  .form-note{font-size:12px;color:var(--ink-3);margin-top:12px;line-height:1.7}
  .form-status{display:none;align-items:flex-start;gap:8px;border-radius:var(--r-sm);padding:12px 14px;font-size:14px;line-height:1.7;margin-bottom:16px}
  .form-status.is-visible{display:flex}
  .form-status.success{background:var(--brand-50);border:1px solid var(--brand-300);color:var(--brand-700)}
  .form-status.error{background:#FDF1EE;border:1px solid #F0C3B2;color:#9A4526}
  .form-status.loading{background:#F4F7F9;border:1px solid var(--line);color:var(--ink-2)}

  /* ---------- 保障卡 ---------- */
  .guarantee{display:grid;gap:16px}
  @media (min-width:768px){.guarantee{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
  .g-card{background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand-600);border-radius:14px;padding:22px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out}
  .g-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
  .g-card h3{font-size:17px;margin:0 0 8px}
  .g-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
  .g-tag{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--accent-600);font-weight:700;margin-bottom:10px}

  /* ---------- 等级入口卡 ---------- */
  .grid-3{display:grid;gap:24px}
  @media (min-width:768px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
  .entry-card{overflow:hidden;display:flex;flex-direction:column}
  .entry-card figure{margin:0;position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
  .entry-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .entry-card:hover figure img{transform:scale(1.03)}
  .entry-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .entry-body h3{font-size:18px}
  .entry-body p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
  .entry-foot{margin-top:auto;padding-top:8px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3)}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px;margin:0 auto}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
  .faq-item[open]{border-color:var(--brand-300);box-shadow:var(--sh-1)}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 20px;min-height:44px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"";flex:none;width:9px;height:9px;margin-top:-4px;
    border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
    transform:rotate(45deg);transition:transform .25s ease;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
  .faq-answer{padding:2px 20px 20px;font-size:15px;color:var(--ink-2);line-height:1.85;border-left:3px solid var(--accent-500);margin-left:0}
  .faq-item[open] summary{border-left:3px solid var(--accent-500)}

  /* ---------- 结尾 CTA ---------- */
  .cta-band{position:relative;overflow:hidden;background:linear-gradient(115deg,var(--brand-50),#fff 70%);border-top:1px solid var(--brand-100)}
  .cta-inner{display:grid;gap:24px;padding:48px 0;align-items:center}
  @media (min-width:1024px){.cta-inner{grid-template-columns:1fr auto;padding:72px 0}}
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin:0 0 10px}
  .cta-inner p{font-size:15px;color:var(--ink-2);margin:0;max-width:62ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0E2A33;color:#C7D6DC;padding:56px 0 28px}
  .site-footer h3{font-size:15px;font-weight:600;color:#fff;margin:0 0 14px}
  .site-footer a{color:#C7D6DC;transition:color .2s ease}
  .site-footer a:hover{color:var(--accent-500)}
  .footer-grid{display:grid;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
  .footer-grid ul{display:flex;flex-direction:column;gap:8px;font-size:15px}
  .footer-brand-text{font-size:17px;font-weight:600;color:#fff}
  .footer-bottom{
    border-top:1px solid rgba(199,214,220,.16);margin-top:40px;padding-top:20px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA7B0;
  }
  .note{font-size:12px;line-height:1.7}