/* roulang page: index */
:root{
  --ink:#0E0D14;
  --ink-2:#1B1926;
  --ink-line:#2C2A3A;
  --primary:#7A3BFF;
  --accent:#C8FF4D;
  --warm:#FF6B35;
  --bg:#F6F6F9;
  --surface:#FFFFFF;
  --line:#E6E6EE;
  --t1:#17161F;
  --t2:#5A5870;
  --t3:#8B89A0;
  --t-inv:#F4F3FB;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(16,14,30,.06);
  --sh-2:0 10px 28px -10px rgba(16,14,30,.14);
  --sh-3:0 28px 64px -28px rgba(16,14,30,.30);
  --glow:0 0 0 1px rgba(200,255,77,.35), 0 12px 40px -12px rgba(122,59,255,.45);
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:64px; --s7:96px;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:#5c26d8;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;box-shadow:0 0 0 3px rgba(200,255,77,.30);border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn:disabled{opacity:.4;transform:none;box-shadow:none;cursor:not-allowed;}
.btn--accent{background:var(--accent);color:var(--ink);}
.btn--accent:hover{background:#b8f52f;color:var(--ink);}
.btn--outline{border-color:var(--ink-line);color:var(--t-inv);background:transparent;}
.btn--outline:hover{border-color:var(--accent);color:var(--accent);}
.btn--line{border-color:var(--line);color:var(--t1);background:var(--surface);}
.btn--line:hover{border-color:var(--primary);color:var(--primary);}
.btn--primary{background:var(--primary);color:#fff;}
.btn--primary:hover{background:#6a2fe6;color:#fff;}
.btn--block{width:100%;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  background:rgba(122,59,255,.10);color:var(--primary);
}
.tag--ink{background:var(--ink);color:var(--t-inv);}
.tag--accent{background:rgba(200,255,77,.22);color:#3f5c00;}
.tag--warm{background:rgba(255,107,53,.14);color:#c2431a;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--ink{background:var(--ink);color:var(--t-inv);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;}
.section__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--primary);
  margin-bottom:12px;
}
.section__eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);display:block;}
.section__title{font-size:38px;}
.section__desc{margin-top:12px;color:var(--t2);max-width:620px;font-size:16px;}
.section--ink .section__title{color:var(--t-inv);}
.section--ink .section__desc{color:#a9a6bd;}
.section__more{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--t1);
  border-bottom:2px solid transparent;padding-bottom:4px;
}
.section__more:hover{color:var(--primary);border-color:var(--primary);}
.section__more svg{transition:transform .18s ease;}
.section__more:hover svg{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,246,249,.94);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,background-color .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-1);border-color:var(--line);}
.header-inner{display:flex;align-items:center;gap:32px;height:72px;transition:height .2s ease;}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--t1);}
.logo:hover{color:var(--t1);}
.logo__mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--primary),#4a1fb0 62%,var(--ink));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px -8px rgba(122,59,255,.9);
}
.logo__mark span{width:12px;height:12px;border:2px solid var(--accent);border-radius:3px;transform:rotate(45deg);display:block;}
.logo__text{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav__item{position:relative;}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--t2);position:relative;
}
.nav__link:hover{color:var(--t1);background:rgba(122,59,255,.07);}
.nav__link.is-active{color:var(--t1);}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--accent);border-radius:2px;
}
.nav__caret{width:10px;height:10px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;background:var(--surface);color:var(--t2);
  transition:transform .16s ease,box-shadow .16s ease,color .16s ease,border-color .16s ease;
}
.icon-btn:hover{transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--primary);border-color:var(--primary);}
.header-cta{min-height:44px;padding:0 20px;}
.burger{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.burger span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}

/* Mega 面板 */
.mega{
  position:absolute;top:calc(100% + 12px);left:-24px;width:760px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-3);padding:24px;
  display:grid;grid-template-columns:1fr 1.1fr 200px;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px;}
.nav__item:hover .mega,.nav__item:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega__title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--t3);margin-bottom:12px;}
.mega__list li + li{margin-top:10px;}
.mega__list a{display:block;font-size:15px;font-weight:600;color:var(--t1);}
.mega__list a:hover{color:var(--primary);}
.mega__list small{display:block;font-size:13px;font-weight:400;color:var(--t3);}
.mega__post{display:flex;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line);}
.mega__post:last-child{border-bottom:0;}
.mega__post a{font-size:14px;font-weight:600;color:var(--t1);line-height:1.5;}
.mega__post a:hover{color:var(--primary);}
.mega__post .num{font-size:12px;color:var(--t3);flex-shrink:0;}
.mega__card{display:block;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);}
.mega__card img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .3s ease;}
.mega__card:hover img{transform:scale(1.05);}
.mega__card p{padding:10px 12px;font-size:13px;font-weight:600;color:var(--t1);background:var(--surface);}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--ink);color:var(--t-inv);overflow:hidden;
  padding:96px 0 128px;
}
.hero__bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42;
}
.hero__grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,13,20,.96) 0%,rgba(14,13,20,.86) 42%,rgba(14,13,20,.42) 100%);
}
.hero__cut{
  position:absolute;left:0;right:0;bottom:0;height:64px;background:var(--bg);
  clip-path:polygon(0 100%,100% 0,100% 100%);
}
.hero__inner{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.hero__content{grid-column:1 / span 7;}
.hero__label{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--pill);
  border:1px solid rgba(200,255,77,.45);color:var(--accent);
  font-size:12px;font-weight:700;letter-spacing:.06em;margin-bottom:24px;
}
.hero__label i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(200,255,77,.18);display:block;}
.hero__title{font-size:60px;font-weight:800;letter-spacing:-.02em;line-height:1.1;color:#fff;}
.hero__title em{font-style:normal;color:var(--accent);}
.hero__sub{margin-top:20px;font-size:18px;line-height:1.7;color:#c9c6da;max-width:520px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:48px;border-top:1px solid var(--ink-line);padding-top:28px;
}
.stat{padding:0 20px;border-left:1px solid var(--ink-line);}
.stat:first-child{padding-left:0;border-left:0;}
.stat__num{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;}
.stat__label{margin-top:6px;font-size:13px;color:#9d9aae;}

/* ---------- 信息条 ---------- */
.info-bar{margin-top:-64px;position:relative;z-index:5;padding-bottom:8px;}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#d6d4ee;}
.info-card__icon{
  width:40px;height:40px;border-radius:12px;background:rgba(122,59,255,.10);
  display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:14px;
}
.info-card h3{font-size:17px;margin-bottom:6px;}
.info-card p{font-size:14px;color:var(--t2);line-height:1.7;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:36px;}
.timeline::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--line);}
.timeline__item{position:relative;padding:0 0 24px 0;}
.timeline__item::before{
  content:"";position:absolute;left:-42px;top:18px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 6px rgba(200,255,77,.22);
}
.timeline__card{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--line);
  border-radius:var(--r-md);padding:20px 24px;display:flex;gap:24px;align-items:flex-start;
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.timeline__card:hover{border-left-color:var(--accent);transform:translateX(2px);box-shadow:var(--sh-2);}
.timeline__time{
  flex-shrink:0;font-family:var(--mono);font-size:13px;font-weight:600;color:var(--t-inv);
  background:var(--ink);border-radius:var(--r-sm);padding:6px 12px;font-variant-numeric:tabular-nums;
}
.timeline__body h3{font-size:18px;margin-bottom:6px;}
.timeline__body p{font-size:14px;color:var(--t2);}
.timeline__tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap;}

/* ---------- 网格与卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.media-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:block;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--accent);}
.media-card__media{overflow:hidden;background:#EDEBF5;}
.media-card__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease;}
.media-card:hover .media-card__media img{transform:scale(1.04);}
.media-card__body{padding:20px;}
.media-card__body h3{font-size:18px;margin-bottom:6px;color:var(--t1);}
.media-card:hover .media-card__body h3{color:var(--primary);}
.media-card__body p{font-size:14px;color:var(--t2);line-height:1.7;}
.media-card__meta{margin-top:14px;font-size:13px;color:var(--t3);display:flex;gap:8px;align-items:center;}

/* ---------- 方案对比 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan{
  position:relative;background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r-lg);
  padding:32px 28px;transition:transform .2s ease,box-shadow .2s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.plan--featured{
  border-color:var(--accent);transform:translateY(-8px);
  background:linear-gradient(180deg,rgba(200,255,77,.06),rgba(255,255,255,0) 55%),var(--surface);
  box-shadow:var(--sh-2);
}
.plan--featured:hover{transform:translateY(-10px);}
.plan__badge{
  position:absolute;top:-13px;left:24px;
  background:var(--warm);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--pill);
}
.plan__name{font-size:20px;font-weight:700;}
.plan__note{margin-top:6px;font-size:13px;color:var(--t3);}
.plan__price{display:flex;align-items:baseline;gap:6px;margin:20px 0 8px;}
.plan__price b{font-family:var(--mono);font-size:40px;font-weight:700;letter-spacing:-.02em;}
.plan__price span{font-size:13px;color:var(--t3);}
.plan-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:12px;}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--t2);line-height:1.6;}
.plan-list li svg{flex-shrink:0;margin-top:3px;}
.plan-list li.is-off{color:var(--t3);}
.plan-list li.is-off svg path{stroke:var(--t3);}

/* ---------- 预约表单 ---------- */
.booking{background:var(--ink);color:var(--t-inv);position:relative;overflow:hidden;}
.booking__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.20;}
.booking__veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,13,20,.94),rgba(14,13,20,.72));}
.booking__inner{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:start;}
.booking__text{grid-column:1 / span 5;}
.booking__text h2{font-size:38px;color:#fff;}
.booking__text p.lead{margin-top:16px;color:#b6b3c6;}
.booking__points{margin-top:28px;display:flex;flex-direction:column;gap:16px;}
.booking__points li{display:flex;gap:12px;font-size:15px;color:#c9c6da;}
.booking__points svg{flex-shrink:0;margin-top:4px;}
.booking__promise{margin-top:28px;font-size:15px;font-weight:600;color:var(--accent);}
.form-card{
  grid-column:6 / span 7;background:var(--ink-2);border:1px solid var(--ink-line);
  border-radius:var(--r-lg);padding:32px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13px;color:#a9a6bd;font-weight:600;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--ink-line);
  background:#141220;color:var(--t-inv);padding:0 14px;outline:none;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8b89a0 50%),linear-gradient(135deg,#8b89a0 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:#6f6c85;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,255,77,.18);}
.field.has-error input,.field.has-error select{border-color:var(--warm);}
.field__error{font-size:13px;color:#ff8a5c;display:none;}
.field.has-error .field__error{display:block;}
.form-note{margin-top:16px;font-size:12px;color:#8b89a0;line-height:1.7;}
.success-bar{
  display:none;margin-top:18px;padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(200,255,77,.08);border-left:3px solid var(--accent);
  font-size:14px;color:#e5ffb0;
}
.success-bar.is-visible{display:block;}
.btn--loading{position:relative;color:transparent!important;}
.btn--loading::after{
  content:"";position:absolute;top:50%;left:50%;width:18px;height:18px;margin:-9px 0 0 -9px;
  border:2px solid rgba(14,13,20,.35);border-top-color:var(--ink);border-radius:50%;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  display:flex;flex-direction:column;color:var(--t1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#dcd9f0;color:var(--t1);}
.post-card__media{position:relative;overflow:hidden;background:#EDEBF5;}
.post-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-card__media img{transform:scale(1.04);}
.post-card__tag{position:absolute;top:12px;left:12px;background:rgba(14,13,20,.82);color:var(--accent);font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--pill);letter-spacing:.06em;}
.post-card__body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px;}
.post-card__body h3{
  font-size:18px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-card__body h3{color:var(--primary);}
.post-card__body p{
  font-size:14px;color:var(--t2);line-height:1.7;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{display:flex;justify-content:space-between;font-size:13px;color:var(--t3);border-top:1px solid var(--line);padding-top:12px;}
.empty-state{
  grid-column:1 / -1;border:1px dashed #cfccdf;border-radius:var(--r-md);
  padding:56px 24px;text-align:center;color:var(--t2);background:var(--surface);
}
.empty-state p{margin-bottom:16px;font-size:15px;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;align-items:start;}
.faq{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:var(--r-md);padding:4px 20px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq[open]{border-left-color:var(--accent);box-shadow:var(--sh-1);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;font-size:16px;font-weight:600;color:var(--t1);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .sign{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq summary .sign::before,.faq summary .sign::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq summary .sign::before{top:7px;left:0;width:16px;height:2px;}
.faq summary .sign::after{left:7px;top:0;width:2px;height:16px;}
.faq[open] summary .sign::after{transform:scaleY(0);opacity:0;}
.faq__body{padding:0 0 18px;font-size:15px;line-height:1.8;color:var(--t2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#b6b3c6;border-top:1px solid var(--ink-line);position:relative;overflow:hidden;}
.footer-grid{
  position:relative;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding:72px 0 40px;
}
.footer-brand .logo__text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:320px;}
.footer-brand .btn{margin-top:20px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col li{line-height:2.2;}
.footer-col a{color:#b6b3c6;font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;line-height:2;}
.footer-bottom{
  position:relative;border-top:1px solid var(--ink-line);padding:22px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#8b89a0;
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:var(--accent);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:50;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--ink);color:var(--t-inv);
  display:flex;flex-direction:column;padding:24px 20px 96px;
  transform:translateX(100%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer__close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--ink-line);color:var(--t-inv);display:flex;align-items:center;justify-content:center;font-size:22px;line-height:1;}
.drawer__list li + li{border-top:1px solid var(--ink-line);}
.drawer__list a{display:block;padding:18px 4px;font-size:18px;font-weight:700;color:var(--t-inv);}
.drawer__list a.is-active{color:var(--accent);}
.drawer__sub{padding:0 4px 18px;display:flex;flex-direction:column;gap:12px;}
.drawer__sub a{font-size:15px;color:#a9a6bd;}
.drawer__sub a:hover{color:var(--accent);}
.drawer__cta{position:fixed;left:20px;right:20px;bottom:24px;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav{display:none;}
  .burger{display:flex;}
  .hero{padding:72px 0 112px;}
  .hero__content{grid-column:1 / -1;}
  .hero__title{font-size:46px;}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:24px 0;}
  .stat{padding:0 16px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .section{padding:72px 0;}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3,.post-grid{grid-template-columns:repeat(2,1fr);}
  .plans{grid-template-columns:1fr;}
  .plan--featured{transform:none;}
  .booking__text{grid-column:1 / -1;}
  .form-card{grid-column:1 / -1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .header-cta{display:none;}
  .hero{padding:56px 0 104px;}
  .hero__title{font-size:36px;}
  .hero__sub{font-size:16px;}
  .hero__actions .btn{width:100%;}
  .hero__stats{grid-template-columns:1fr 1fr;}
  .section{padding:56px 0;}
  .section__head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .section__title{font-size:26px;}
  .booking__text h2{font-size:26px;}
  .form-card{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
  .timeline{padding-left:16px;}
  .timeline::before{left:0;}
  .timeline__item::before{left:-22px;}
  .timeline__card{flex-direction:column;gap:12px;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}
}
@media (max-width:520px){
  .hero__title{font-size:34px;}
  .hero__stats{grid-template-columns:1fr 1fr;}
  .info-grid{grid-template-columns:1fr;}
  .grid-4,.grid-3,.post-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .header-actions .icon-btn{width:42px;height:42px;}
  .stat__num{font-size:24px;}
}

/* roulang page: category1 */
:root{
  --ink:#0E0D14;
  --ink-2:#1B1926;
  --ink-line:#2C2A3A;
  --primary:#7A3BFF;
  --accent:#C8FF4D;
  --warm:#FF6B35;
  --bg:#F6F6F9;
  --surface:#FFFFFF;
  --line:#E6E6EE;
  --t1:#17161F;
  --t2:#5A5870;
  --t3:#8B89A0;
  --t-inv:#F4F3FB;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(16,14,30,.06);
  --sh-2:0 10px 28px -10px rgba(16,14,30,.14);
  --sh-3:0 28px 64px -28px rgba(16,14,30,.30);
  --glow:0 0 0 1px rgba(200,255,77,.35), 0 12px 40px -12px rgba(122,59,255,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;
  --max:1240px;
  --head-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.num,time,.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn[disabled],.btn.is-disabled{opacity:.4;transform:none;box-shadow:none;cursor:not-allowed;}
.btn--accent{background:var(--accent);color:#14121C;}
.btn--accent:hover{background:#D6FF6E;color:#14121C;}
.btn--outline{background:transparent;color:var(--t1);border-color:var(--line);}
.btn--outline:hover{border-color:var(--primary);color:var(--primary);}
.btn--dark{background:var(--ink);color:var(--t-inv);}
.btn--dark:hover{background:var(--ink-2);color:var(--accent);}
.btn--ghost-dark{background:transparent;color:var(--t-inv);border-color:rgba(244,243,251,.32);}
.btn--ghost-dark:hover{border-color:var(--accent);color:var(--accent);}
.btn--block{width:100%;}
.btn--lg{height:52px;padding:0 26px;font-size:16px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--head-h);
  transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--t1);
  font-weight:700;
}
.logo__mark{
  position:relative;
  width:32px;
  height:32px;
  border-radius:10px;
  background:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:none;
  box-shadow:0 0 0 1px rgba(122,59,255,.35);
}
.logo__mark::before{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:4px;
  border:1.5px solid var(--accent);
  border-bottom-color:transparent;
  transform:rotate(45deg);
}
.logo__mark span{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--primary);
}
.logo__text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}

.nav{display:flex;align-items:center;gap:2px;}
.nav__item{position:relative;}
.nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  color:var(--t1);
}
.nav__link:hover{color:var(--primary);background:rgba(122,59,255,.07);}
.nav__link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:-3px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav__caret{
  width:6px;
  height:6px;
  border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-1px);
  opacity:.6;
}

/* Mega 面板 */
.mega{
  position:absolute;
  top:calc(100% + 14px);
  left:-16px;
  width:760px;
  display:grid;
  grid-template-columns:1.05fr 1.3fr .85fr;
  gap:24px;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-3);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(4px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.nav__item:hover .mega,
.nav__item:focus-within .mega{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0);
}
.mega__title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--t3);
  margin-bottom:12px;
}
.mega__list li + li{margin-top:6px;}
.mega__list a{
  display:block;
  padding:10px 12px;
  border-radius:var(--r-sm);
  color:var(--t1);
  font-size:15px;
  font-weight:600;
}
.mega__list a small{
  display:block;
  margin-top:2px;
  font-size:12.5px;
  font-weight:400;
  color:var(--t3);
  line-height:1.6;
}
.mega__list a:hover{background:var(--bg);color:var(--primary);}
.mega__post{
  display:flex;
  gap:10px;
  align-items:baseline;
  padding:8px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
}
.mega__post:last-child{border-bottom:0;}
.mega__post .num{color:var(--t3);font-size:12.5px;flex:none;}
.mega__post a{color:var(--t2);}
.mega__post a:hover{color:var(--primary);}
.mega__card{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--bg);
}
.mega__card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.mega__card p{
  padding:10px 12px;
  font-size:13.5px;
  font-weight:600;
  color:var(--t1);
}
.mega__card:hover{border-color:var(--accent);}
.mega__card:hover p{color:var(--primary);}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;
  height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--t2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav__cta{display:none;}

/* ============ 页面头 ============ */
.page-head{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:48px 0 44px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:20px;
}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--primary);}
.crumb__current{color:var(--t2);}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--pill);
  background:rgba(122,59,255,.1);
  color:var(--primary);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.page-head h1{
  font-size:44px;
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:20em;
}
.page-head__lead{
  margin-top:14px;
  max-width:62em;
  color:var(--t2);
  font-size:16px;
}
.page-head__meta{
  margin-top:18px;
  font-size:13px;
  color:var(--t3);
}
.page-head__meta b{color:var(--t1);font-weight:700;}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section--tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:32px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head h2 em{
  font-style:normal;
  color:var(--primary);
  margin-right:10px;
  font-size:15px;
  font-weight:700;
  vertical-align:2px;
  letter-spacing:.06em;
}
.section-head p{color:var(--t2);font-size:14.5px;margin-top:8px;}
.section-head__more{
  flex:none;
  font-size:14.5px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
}
.section-head__more:hover{transform:translateX(2px);}

/* ============ 信息条 ============ */
.info-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.info-card{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.info-card:hover{border-color:var(--accent);box-shadow:var(--sh-2);transform:translateY(-2px);}
.info-card__icon{
  width:40px;
  height:40px;
  flex:none;
  border-radius:12px;
  background:rgba(122,59,255,.08);
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.info-card__label{font-size:13px;color:var(--t3);}
.info-card__value{font-size:19px;font-weight:700;margin-top:2px;}
.info-card__value .num{font-size:20px;}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.pill{
  height:38px;
  padding:0 18px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--t2);
  font-size:14px;
  font-weight:600;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.pill:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.pill.is-active{background:var(--ink);border-color:var(--ink);color:var(--t-inv);}
.pill.is-active:hover{color:var(--accent);border-color:var(--ink);}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--accent);}
.card__link{display:block;color:inherit;}
.card__link:hover{color:inherit;}
.card__media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,#EDECF4 0%,#F6F6F9 100%);
}
.card__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.card:hover .card__media img{transform:scale(1.04);}
.card__badge{
  position:absolute;
  top:12px;
  left:12px;
  height:26px;
  padding:0 11px;
  border-radius:var(--pill);
  background:rgba(14,13,20,.82);
  color:var(--t-inv);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  display:inline-flex;
  align-items:center;
}
.card__badge--hot{background:var(--warm);color:#fff;}
.card__body{padding:18px 20px 20px;}
.chip{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--pill);
  background:var(--bg);
  border:1px solid var(--line);
  color:var(--t2);
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
}
.card__title{
  margin-top:12px;
  font-size:18px;
  line-height:1.5;
  font-weight:700;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card:hover .card__title{color:var(--primary);}
.card__desc{
  margin-top:8px;
  font-size:14px;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__meta{
  margin-top:14px;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:12.5px;
  color:var(--t3);
  display:flex;
  flex-wrap:wrap;
  gap:4px 14px;
}
.card__meta .num{color:var(--t2);}

/* ============ 流程 ============ */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:24px 22px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.step:hover{border-color:var(--accent);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step__no{
  font-family:var(--font-num);
  font-size:28px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.02em;
  display:block;
  margin-bottom:10px;
}
.step__no::after{
  content:"";
  display:block;
  width:28px;
  height:3px;
  border-radius:2px;
  background:var(--accent);
  margin-top:8px;
}
.step h3{font-size:17px;font-weight:700;line-height:1.5;}
.step p{margin-top:8px;font-size:14px;color:var(--t2);}

/* ============ 深场数据条 ============ */
.stat-band{
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  position:relative;
  overflow:hidden;
}
.stat-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.stat{
  position:relative;
  padding-left:20px;
  border-left:1px solid var(--ink-line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat__value{
  font-family:var(--font-num);
  font-size:30px;
  font-weight:800;
  color:var(--accent);
  letter-spacing:-.02em;
  line-height:1.1;
}
.stat__value small{font-size:14px;font-weight:600;color:var(--t-inv);margin-left:4px;}
.stat__label{margin-top:6px;font-size:13px;color:rgba(244,243,251,.66);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:48px;
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:32px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-band__inner{position:relative;}
.cta-band h2{
  font-size:30px;
  line-height:1.28;
  font-weight:800;
  color:var(--t-inv);
  letter-spacing:-.01em;
}
.cta-band p{
  margin-top:12px;
  color:rgba(244,243,251,.72);
  font-size:15px;
  max-width:46em;
}
.cta-band__actions{
  position:relative;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  background:var(--ink);
  color:rgba(244,243,251,.76);
  border-top:1px solid var(--ink-line);
  padding:64px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.footer-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
}
.footer-brand .logo{color:var(--t-inv);}
.footer-brand .logo__mark{background:var(--ink-2);}
.footer-brand p{
  margin:16px 0 20px;
  font-size:14px;
  line-height:1.85;
  max-width:30em;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--t-inv);
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-col ul li{line-height:2.2;}
.footer-col a{color:rgba(244,243,251,.76);font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;line-height:2.2;}
.footer-bottom{
  position:relative;
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--ink-line);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:rgba(244,243,251,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-toggle{display:inline-flex;}
  .nav{
    position:fixed;
    top:var(--head-h);
    left:0;
    right:0;
    bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:24px 24px 120px;
    overflow-y:auto;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
    z-index:70;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav__item{border-bottom:1px solid var(--line);}
  .nav__link{height:auto;padding:18px 4px;font-size:18px;font-weight:700;border-radius:0;width:100%;justify-content:space-between;}
  .nav__link.is-active::after{display:none;}
  .nav__link.is-active{color:var(--primary);}
  .mega{
    position:static;
    width:auto;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
    box-shadow:none;
    border:0;
    border-radius:0;
    padding:0 0 20px;
    grid-template-columns:1fr;
    gap:16px;
    display:none;
  }
  .nav__item.is-open .mega{display:grid;}
  .mega__card{max-width:320px;}
  .nav__cta{
    display:block;
    position:fixed;
    left:24px;
    right:24px;
    bottom:24px;
    z-index:90;
  }
  .nav__cta .btn{width:100%;}
  .header-actions .header-text-link{display:none;}
  .page-head h1{font-size:38px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .page-head{padding:32px 0 30px;}
  .page-head h1{font-size:30px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:26px;}
  .card-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;padding:28px 24px;gap:16px;}
  .stat{border-left:0;padding-left:0;padding-top:16px;border-top:1px solid var(--ink-line);}
  .stat:first-child{border-top:0;padding-top:0;}
  .cta-band{grid-template-columns:1fr;padding:32px 24px;gap:24px;}
  .cta-band h2{font-size:24px;}
  .cta-band__actions .btn{width:100%;}
  .header-actions .btn{height:40px;padding:0 14px;font-size:14px;}
}
@media (max-width:520px){
  .info-grid{grid-template-columns:1fr;}
  .page-head h1{font-size:27px;}
  .section-head h2{font-size:23px;}
  .card__title{font-size:17px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .btn{min-height:44px;}
  .nav__cta{left:20px;right:20px;}
}

/* roulang page: article */
:root{
  --ink:#0E0D14; --ink-2:#1B1926; --ink-line:#2C2A3A;
  --primary:#7A3BFF; --accent:#C8FF4D; --warm:#FF6B35;
  --bg:#F6F6F9; --surface:#FFFFFF; --line:#E6E6EE;
  --t1:#17161F; --t2:#5A5870; --t3:#8B89A0; --t-inv:#F4F3FB;
  --r-lg:18px; --r-md:14px; --r-sm:12px; --pill:999px;
  --sh-1:0 1px 2px rgba(16,14,30,.06);
  --sh-2:0 10px 28px -10px rgba(16,14,30,.14);
  --sh-3:0 28px 64px -28px rgba(16,14,30,.30);
  --glow:0 0 0 1px rgba(200,255,77,.35), 0 12px 40px -12px rgba(122,59,255,.45);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--t1);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn:disabled{opacity:.4;transform:none;box-shadow:none;cursor:not-allowed;}
.btn--accent{background:var(--accent);color:var(--ink);}
.btn--accent:hover{background:#bdf13a;}
.btn--primary{background:var(--primary);color:#fff;}
.btn--primary:hover{background:#6830e6;}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--t1);}
.btn--ghost:hover{border-color:var(--t1);}
.btn--onink{background:transparent;border-color:var(--ink-line);color:var(--t-inv);}
.btn--onink:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- 头部与导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--t1);flex:0 0 auto;}
.logo__mark{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,#7A3BFF 0%,#33177d 100%);display:grid;place-items:center;flex:0 0 auto;}
.logo__mark span{width:12px;height:12px;background:var(--accent);border-radius:3px;transform:rotate(45deg);display:block;}
.nav{display:flex;align-items:center;gap:2px;margin-right:auto;}
.nav__item{position:relative;}
.nav__item::after{content:"";position:absolute;left:0;right:0;top:100%;height:18px;}
.nav__link{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--t2);position:relative;
  transition:color .16s ease,background .16s ease;}
.nav__link:hover{color:var(--t1);background:rgba(122,59,255,.07);}
.nav__link.is-active{color:var(--t1);font-weight:600;}
.nav__link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-14px;height:2px;background:var(--accent);border-radius:2px;}
.nav__caret{width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translate(-2px,-2px);opacity:.6;}
.mega{
  position:absolute;top:calc(100% + 18px);left:0;width:760px;padding:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);
  display:grid;grid-template-columns:1.05fr 1.25fr .9fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.nav__item:hover .mega,.nav__item:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega__title{font-size:12px;letter-spacing:.08em;color:var(--t3);font-weight:600;margin-bottom:12px;}
.mega__list li+li{margin-top:8px;}
.mega__list a{display:block;padding:8px 10px;border-radius:10px;font-size:14px;font-weight:600;color:var(--t1);transition:background .16s ease,color .16s ease;}
.mega__list a:hover{background:var(--bg);color:var(--primary);}
.mega__list small{display:block;font-size:12px;font-weight:400;color:var(--t3);margin-top:2px;}
.mega__post{display:flex;gap:10px;align-items:baseline;padding:7px 0;font-size:14px;border-bottom:1px dashed var(--line);}
.mega__post:last-child{border-bottom:0;}
.mega__post .num{color:var(--t3);font-size:12.5px;flex:0 0 auto;}
.mega__post a{color:var(--t2);transition:color .16s ease;}
.mega__post a:hover{color:var(--primary);}
.mega__card{display:block;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);}
.mega__card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.mega__card p{padding:10px 12px;font-size:13px;font-weight:600;color:var(--t1);background:var(--bg);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);display:grid;place-items:center;color:var(--t2);transition:color .16s ease,border-color .16s ease,background .16s ease;}
.icon-btn:hover{color:var(--t1);border-color:var(--primary);background:rgba(122,59,255,.06);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.menu-toggle span{display:block;width:18px;height:1.5px;background:var(--t1);border-radius:2px;}

/* ---------- 移动端抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;background:var(--ink);color:var(--t-inv);padding:22px 20px 110px;overflow-y:auto;
  transform:translateY(-100%);visibility:hidden;transition:transform .28s ease,visibility .28s ease;}
.drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer .logo__text{color:var(--t-inv);}
.drawer__close{width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--ink-line);color:var(--t-inv);font-size:20px;line-height:1;display:grid;place-items:center;}
.drawer__nav a{display:block;font-size:18px;font-weight:700;padding:16px 0;border-bottom:1px solid var(--ink-line);}
.drawer__nav a:hover{color:var(--accent);}
.drawer__sub a{font-size:15px;font-weight:500;color:rgba(244,243,251,.68);padding:12px 0;}
.drawer__cta{position:fixed;left:20px;right:20px;bottom:24px;width:calc(100% - 40px);}

/* ---------- 文章头图 ---------- */
.article-hero{position:relative;background:var(--ink);color:var(--t-inv);padding:36px 0 56px;overflow:hidden;}
.article-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.30;}
.article-hero__veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,13,20,.96) 0%,rgba(14,13,20,.82) 48%,rgba(14,13,20,.62) 100%);}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(244,243,251,.6);margin-bottom:20px;}
.breadcrumb a{color:rgba(244,243,251,.8);transition:color .16s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.42;}
.breadcrumb .current{max-width:560px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(244,243,251,.5);}
.pill{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.06em;background:rgba(122,59,255,.3);border:1px solid rgba(122,59,255,.52);color:#E6DEFF;}
.article-title{font-size:clamp(26px,3.4vw,44px);line-height:1.3;font-weight:800;letter-spacing:-.02em;color:#fff;max-width:920px;margin:16px 0 18px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:rgba(244,243,251,.65);}
.article-meta .sep{width:1px;height:12px;background:rgba(244,243,251,.25);}

/* ---------- 正文 ---------- */
.article-section{padding:60px 0 24px;}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 220px;gap:56px;justify-content:center;align-items:start;}
.article-content{font-size:18px;line-height:1.9;color:var(--t1);word-break:break-word;}
.article-content>*:first-child{margin-top:0;}
.article-content p{margin:0 0 1.2em;}
.article-content h2{font-size:26px;line-height:1.45;font-weight:700;margin:48px 0 20px;padding-left:14px;border-left:4px solid var(--accent);letter-spacing:-.01em;}
.article-content h3{font-size:20px;line-height:1.5;font-weight:600;margin:32px 0 14px;}
.article-content h4{font-size:17px;font-weight:600;margin:24px 0 12px;}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:#5a25d8;}
.article-content strong{font-weight:700;}
.article-content blockquote{margin:24px 0;padding:16px 22px;background:#F2EDFF;border-left:3px solid var(--primary);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--t2);font-size:17px;}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:22px;}
.article-content ul li{list-style:none;position:relative;padding-left:16px;margin:8px 0;}
.article-content ul li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--primary);border-radius:2px;}
.article-content ol{list-style:decimal;}
.article-content ol li{margin:8px 0;padding-left:6px;}
.article-content ol li::marker{color:var(--primary);font-weight:700;}
.article-content img{border-radius:12px;margin:24px auto;box-shadow:var(--sh-1);}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px;line-height:1.6;}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:#fff;border-radius:var(--r-md);overflow:hidden;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-content th{background:var(--bg);font-weight:600;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-content code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:15px;}

/* ---------- 目录 ---------- */
.article-toc{position:sticky;top:96px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);}
.article-toc__title{font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--t3);margin-bottom:12px;}
.article-toc__list a{display:block;padding:6px 0 6px 12px;font-size:13px;line-height:1.55;color:var(--t2);border-left:2px solid var(--line);transition:color .16s ease,border-color .16s ease;}
.article-toc__list a:hover{color:var(--primary);border-left-color:var(--accent);}
.article-toc__list .lvl-3 a{padding-left:24px;font-size:12.5px;color:var(--t3);}

/* ---------- 文末 ---------- */
.article-foot{padding:8px 0 64px;}
.article-foot .inner{max-width:1056px;margin:0 auto;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:26px;}
.tag-row .label{font-size:13px;color:var(--t3);margin-right:2px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--pill);background:#fff;border:1px solid var(--line);font-size:13px;color:var(--t2);transition:border-color .16s ease,color .16s ease,transform .16s ease;}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;padding-top:26px;border-top:1px solid var(--line);}
.empty-state{padding:64px 24px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--t2);font-size:15px;margin-bottom:22px;}

/* ---------- 通用板块与卡片 ---------- */
.section{padding:72px 0;}
.section--bg{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section__title{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.015em;}
.section__sub{font-size:13px;color:var(--t3);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--accent);}
.card__thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card__thumb img{transform:scale(1.04);}
.card__tag{position:absolute;top:12px;left:12px;height:26px;padding:0 11px;border-radius:var(--pill);background:rgba(14,13,20,.8);color:var(--t-inv);font-size:12px;display:inline-flex;align-items:center;letter-spacing:.04em;}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{font-size:17px;font-weight:600;line-height:1.45;transition:color .16s ease;}
.card:hover .card__title{color:var(--primary);}
.card__desc{font-size:14px;color:var(--t2);line-height:1.7;}
.card__foot{margin-top:auto;display:flex;gap:12px;align-items:center;font-size:12.5px;color:var(--t3);padding-top:6px;}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;background:var(--ink);color:var(--t-inv);padding:56px 0;overflow:hidden;}
.cta-band__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.26;}
.cta-band__veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,13,20,.94),rgba(14,13,20,.72));}
.cta-band .container{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:28px;font-weight:700;letter-spacing:-.01em;}
.cta-band p{color:rgba(244,243,251,.68);font-size:15px;margin-top:8px;max-width:560px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--t-inv);border-top:1px solid var(--ink-line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo__text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(244,243,251,.62);margin:16px 0 20px;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:8px;}
.footer-col a{font-size:14px;line-height:2.2;color:rgba(244,243,251,.66);transition:color .16s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;line-height:2.2;color:rgba(244,243,251,.66);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:20px 0 28px;border-top:1px solid var(--ink-line);font-size:13px;color:rgba(244,243,251,.5);}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;z-index:95;
  background:var(--ink);color:var(--accent);border:1px solid var(--ink-line);
  display:grid;place-items:center;opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s ease;}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);box-shadow:var(--glow);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav{display:none;}
  .mega{display:none;}
  .menu-toggle{display:inline-flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-toc{display:none;}
  .article-foot .inner{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:56px 0;}
  .section__title{font-size:26px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .header-cta{display:none;}
  .article-hero{padding:28px 0 44px;}
  .article-hero__bg{opacity:.22;}
  .article-section{padding:44px 0 16px;}
  .article-content{font-size:16px;line-height:1.9;}
  .article-content h2{font-size:22px;margin:36px 0 16px;}
  .article-content h3{font-size:18px;}
  .article-content blockquote{font-size:15.5px;padding:14px 16px;}
  .breadcrumb .current{max-width:240px;}
  .section{padding:48px 0;}
  .section__head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section__title{font-size:23px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:44px 0;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:480px){
  .logo{font-size:15px;}
  .article-title{font-size:26px;}
  .article-meta{gap:10px;font-size:12.5px;}
  .btn{width:100%;min-height:44px;}
  .article-actions{flex-direction:column;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:16px;}
  .drawer__cta{left:16px;right:16px;width:calc(100% - 32px);}
}

/* roulang page: category2 */
:root{
  --ink:#0E0D14;
  --ink-2:#1B1926;
  --ink-line:#2C2A3A;
  --primary:#7A3BFF;
  --accent:#C8FF4D;
  --warm:#FF6B35;
  --bg:#F6F6F9;
  --surface:#FFFFFF;
  --line:#E6E6EE;
  --t1:#17161F;
  --t2:#5A5870;
  --t3:#8B89A0;
  --t-inv:#F4F3FB;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(16,14,30,.06);
  --sh-2:0 10px 28px -10px rgba(16,14,30,.14);
  --sh-3:0 28px 64px -28px rgba(16,14,30,.30);
  --glow:0 0 0 1px rgba(200,255,77,.35), 0 12px 40px -12px rgba(122,59,255,.45);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:#5A24D6;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.section-head h2,.h2{font-size:38px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--t1);}
.section-head p{margin-top:10px;font-size:15.5px;color:var(--t2);max-width:640px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--primary);}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .2s ease;}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--t1);letter-spacing:-.01em;white-space:nowrap;}
.logo:hover{color:var(--t1);}
.logo__mark{
  width:32px;height:32px;border-radius:10px;flex:none;
  background:linear-gradient(140deg,var(--primary),#40159E);
  display:grid;place-items:center;
}
.logo__mark span{width:11px;height:11px;background:var(--accent);border-radius:3px;transform:rotate(45deg);}

.nav{display:flex;align-items:center;gap:2px;margin-left:12px;}
.nav__item{position:relative;}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--t2);
  white-space:nowrap;transition:color .18s ease,background .18s ease;
}
.nav__link:hover{color:var(--t1);background:var(--bg);}
.nav__link.is-active{color:var(--t1);}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav__caret{
  width:6px;height:6px;flex:none;border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);
  transition:transform .2s ease;
}
.nav__item:hover .nav__caret{transform:rotate(225deg) translate(-2px,-2px);}

.mega{
  position:absolute;top:calc(100% + 12px);left:0;width:760px;
  display:grid;grid-template-columns:1fr 1fr 240px;gap:26px;
  padding:26px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.nav__item:hover .mega,.nav__item:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega__title{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--t3);margin-bottom:14px;}
.mega__list li + li{margin-top:6px;}
.mega__list a{display:block;padding:10px 12px;border-radius:var(--r-sm);background:var(--bg);font-size:14.5px;font-weight:700;color:var(--t1);transition:background .18s ease,color .18s ease;}
.mega__list a small{display:block;margin-top:4px;font-size:12.5px;font-weight:400;color:var(--t3);}
.mega__list a:hover{background:#fff;color:var(--primary);box-shadow:var(--sh-1);}
.mega__post{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--t2);}
.mega__post:last-child{border-bottom:0;}
.mega__post .num{color:var(--t3);flex:none;font-size:12.5px;}
.mega__post a{color:var(--t2);line-height:1.5;}
.mega__post a:hover{color:var(--primary);}
.mega__card{display:block;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--bg);}
.mega__card img{width:100%;height:135px;object-fit:cover;transition:transform .3s ease;}
.mega__card:hover img{transform:scale(1.04);}
.mega__card p{padding:12px 14px;font-size:13.5px;font-weight:700;color:var(--t1);}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:none;}
.icon-btn{
  width:44px;height:44px;display:inline-grid;place-items:center;
  border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  color:var(--t2);cursor:pointer;transition:.18s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.icon-btn:active{transform:translateY(0);box-shadow:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn--accent{background:var(--accent);color:#131313;}
.btn--accent:hover{color:#131313;transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(200,255,77,.85);}
.btn--accent:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--t1);border-color:var(--line);}
.btn--ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--ghost:active{transform:translateY(0);box-shadow:none;}
.btn--inv{background:transparent;color:var(--t-inv);border-color:var(--ink-line);}
.btn--inv:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}
.btn--inv:active{transform:translateY(0);}
.btn--block{width:100%;}
.btn[disabled],.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.mobile-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;cursor:pointer;place-items:center;color:var(--t1);}
.mobile-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.mobile-toggle span::before,.mobile-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.mobile-toggle span::before{top:-6px;}
.mobile-toggle span::after{top:6px;}

/* ---------- Drawer ---------- */
.drawer{
  display:none;position:fixed;left:0;right:0;top:72px;bottom:0;
  background:#fff;z-index:85;padding:20px 20px 120px;
  overflow-y:auto;border-top:1px solid var(--line);
}
body.drawer-open{overflow:hidden;}
body.drawer-open .drawer{display:block;}
.drawer h3{font-size:12.5px;letter-spacing:.06em;color:var(--t3);margin:20px 0 6px;}
.drawer__link{display:block;padding:15px 0;font-size:17px;font-weight:700;color:var(--t1);border-bottom:1px solid var(--line);}
.drawer__link.is-active{color:var(--primary);}
.drawer__sub{display:block;padding:12px 0;font-size:14.5px;color:var(--t2);border-bottom:1px dashed var(--line);}
.drawer__foot{position:fixed;left:20px;right:20px;bottom:20px;}

/* ---------- Page banner ---------- */
.page-banner{position:relative;background:var(--ink);color:var(--t-inv);overflow:hidden;padding:44px 0 64px;}
.page-banner__bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;opacity:.2;}
.page-banner__grid{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
}
.page-banner__inner{position:relative;display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:end;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:#9C99B4;margin-bottom:22px;}
.breadcrumb a{color:#9C99B4;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span[aria-current]{color:var(--t-inv);}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;
  border-radius:var(--pill);font-size:12.5px;font-weight:700;letter-spacing:.04em;
  background:rgba(122,59,255,.22);color:#D8C6FF;border:1px solid rgba(122,59,255,.45);
}
.page-banner h1{font-size:clamp(32px,4.2vw,52px);line-height:1.14;font-weight:800;letter-spacing:-.02em;margin:18px 0 16px;}
.page-banner__lead{font-size:16.5px;color:#C7C5D8;max-width:620px;}
.page-banner__meta{margin-top:18px;font-size:13px;color:#8B89A0;}
.page-banner__thumb{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--ink-line);}
.page-banner__thumb img{width:100%;height:200px;object-fit:cover;}

/* ---------- Guide layout ---------- */
.guide-layout{display:grid;grid-template-columns:246px 1fr;gap:40px;align-items:start;}
.guide-index{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:14px;box-shadow:var(--sh-1);
}
.guide-index h3{font-size:12.5px;letter-spacing:.06em;color:var(--t3);padding:8px 12px 12px;}
.index-item{
  display:flex;gap:10px;align-items:baseline;
  padding:12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;color:var(--t2);
  border-left:3px solid transparent;transition:.18s ease;
}
.index-item .num{font-size:12px;color:var(--t3);flex:none;}
.index-item:hover{background:var(--bg);color:var(--t1);}
.index-item.is-current{border-left-color:var(--accent);background:var(--bg);color:var(--t1);}
.index-note{margin-top:14px;padding:16px 14px;border-radius:var(--r-md);background:var(--ink-2);color:var(--t-inv);}
.index-note p{font-size:13px;line-height:1.7;color:#B9B7CC;margin-bottom:12px;}
.index-note .btn{min-height:40px;font-size:14px;}

.row-list{display:flex;flex-direction:column;gap:20px;}
.row-card{
  display:grid;grid-template-columns:200px 1fr;gap:24px;
  padding:16px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);
  color:var(--t1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.row-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--accent);color:var(--t1);}
.row-card__media{aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;background:var(--bg);border:1px solid var(--line);}
.row-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.row-card:hover .row-card__media img{transform:scale(1.04);}
.row-card__body{display:flex;flex-direction:column;gap:10px;padding:6px 10px 6px 0;}
.row-card__no{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--primary);}
.row-card h3{font-size:19px;font-weight:700;line-height:1.45;color:var(--t1);}
.row-card p{font-size:14.5px;line-height:1.78;color:var(--t2);}
.row-card__meta{margin-top:auto;display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--t3);}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--pill);background:var(--bg);border:1px solid var(--line);font-size:12px;color:var(--t2);}
.tag--accent{background:rgba(200,255,77,.2);border-color:rgba(200,255,77,.6);color:#3E4A12;}

/* ---------- Metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.metric{padding:34px 32px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric__num{font-size:40px;font-weight:800;line-height:1.1;color:var(--t1);letter-spacing:-.02em;}
.metric__num small{font-size:15px;font-weight:600;color:var(--t3);margin-left:6px;}
.metric__label{margin-top:10px;font-size:14px;color:var(--t2);}

/* ---------- Scenes ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--accent);}
.scene-card__icon{
  width:44px;height:44px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(122,59,255,.1);color:var(--primary);margin-bottom:18px;
}
.scene-card h3{font-size:19px;font-weight:700;color:var(--t1);margin-bottom:12px;}
.scene-card p{font-size:14.5px;line-height:1.8;color:var(--t2);}
.scene-card ul{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.scene-card li{position:relative;padding-left:16px;font-size:14px;color:var(--t2);}
.scene-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:1px;background:var(--accent);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start;}
details.faq{
  background:var(--surface);border:1px solid var(--line);
  border-left:3px solid transparent;border-radius:var(--r-md);
  padding:0 22px;transition:border-color .2s ease,box-shadow .2s ease;
}
details.faq[open]{border-left-color:var(--accent);box-shadow:var(--sh-1);}
details.faq summary{
  list-style:none;cursor:pointer;padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--t1);
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{content:"+";font-size:20px;font-weight:400;color:var(--t3);flex:none;transition:color .2s ease;}
details.faq[open] summary::after{content:"−";color:var(--primary);}
.faq__body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--t2);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink);color:var(--t-inv);padding:52px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band__bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;opacity:.22;}
.cta-band__grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:56px 56px;pointer-events:none;}
.cta-band__text{position:relative;max-width:640px;}
.cta-band h2{font-size:32px;line-height:1.3;font-weight:700;margin-bottom:12px;}
.cta-band p{font-size:15px;color:#B9B7CC;}
.cta-band__actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;flex:none;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--t-inv);border-top:1px solid var(--ink-line);margin-top:96px;position:relative;overflow:hidden;}
.site-footer__grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;pointer-events:none;}
.footer-grid{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding:72px 0 48px;}
.footer-brand .logo{color:var(--t-inv);margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A9A7BC;margin-bottom:22px;max-width:340px;}
.footer-col h3{font-size:13px;font-weight:700;letter-spacing:.06em;color:#8B89A0;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;}
.footer-col li{line-height:2.2;}
.footer-col a{font-size:14.5px;color:#CFCDDE;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14.5px;color:#CFCDDE;line-height:2.2;}
.footer-bottom{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0 40px;border-top:1px solid var(--ink-line);
  font-size:13px;color:#8B89A0;flex-wrap:wrap;
}

/* ---------- States ---------- */
.skeleton{height:16px;border-radius:6px;background:linear-gradient(90deg,#EDEDF3 25%,#F7F7FA 37%,#EDEDF3 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;}
@keyframes sk{0%{background-position:100% 50%;}100%{background-position:0 50%;}}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-lg);padding:48px 24px;text-align:center;color:var(--t3);background:var(--surface);}
.empty-state p{margin-bottom:16px;font-size:14.5px;}
.notice{border-left:3px solid var(--accent);background:#FAFDEF;border-radius:var(--r-sm);padding:14px 18px;font-size:14px;color:var(--t2);}
.is-loading{position:relative;color:transparent !important;}
.is-loading::after{content:"";position:absolute;width:18px;height:18px;border-radius:50%;border:2px solid rgba(19,19,19,.25);border-top-color:#131313;animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav{display:none;}
  .header-actions{display:none;}
  .mobile-toggle{display:grid;}
  .page-banner__inner{grid-template-columns:1fr;gap:32px;align-items:start;}
  .page-banner__thumb{max-width:420px;}
  .guide-layout{grid-template-columns:1fr;gap:28px;}
  .guide-index{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:6px;}
  .guide-index h3{grid-column:1 / -1;}
  .index-note{grid-column:1 / -1;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;padding:56px 0 40px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .section-head h2,.h2{font-size:26px;}
  .page-banner{padding:32px 0 48px;}
  .page-banner h1{font-size:32px;}
  .row-card{grid-template-columns:1fr;gap:16px;}
  .row-card__media{aspect-ratio:16/9;}
  .row-card__body{padding:0 4px 8px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:26px 24px;}
  .metric:last-child{border-bottom:0;}
  .scene-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 26px;}
  .cta-band h2{font-size:26px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .btn{min-height:46px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:480px){
  .container{padding:0 20px;}
  .page-banner h1{font-size:30px;}
  .guide-index{grid-template-columns:1fr;}
  .metric__num{font-size:32px;}
  .btn{width:100%;}
  .header-inner{gap:12px;}
}