/* roulang page: index */
:root{
  --c-primary:#0F5F4E;
  --c-primary-deep:#0A4539;
  --c-primary-soft:#7FB5A6;
  --c-accent:#E1683A;
  --c-accent-soft:#FCE9DF;
  --c-jade:#14A37F;
  --c-ink:#17211E;
  --c-ink-2:#3D4A46;
  --c-muted:#6C7A76;
  --c-line:#E2E8E5;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-surface-2:#EDF3F0;
  --r-btn:999px;
  --r-card:16px;
  --r-input:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,95,78,.06),0 8px 24px rgba(15,95,78,.08);
  --sh-2:0 4px 12px rgba(15,95,78,.10),0 16px 40px rgba(15,95,78,.12);
  --gap-section:88px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){
  .container{max-width:1280px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn--primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 1px 2px rgba(15,95,78,.18),0 8px 20px rgba(15,95,78,.22);
}
.btn--primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 4px 12px rgba(15,95,78,.24),0 16px 36px rgba(15,95,78,.26)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 1px 2px rgba(15,95,78,.2)}
.btn--ghost{
  background:transparent;
  color:var(--c-primary);
  border:1px solid var(--c-primary-soft);
}
.btn--ghost:hover{background:var(--c-surface-2);border-color:var(--c-primary);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--accent{
  background:var(--c-accent);
  color:#fff;
  box-shadow:0 1px 2px rgba(225,104,58,.2),0 8px 20px rgba(225,104,58,.24);
}
.btn--accent:hover{background:#C9572C;transform:translateY(-1px);box-shadow:0 4px 12px rgba(225,104,58,.26),0 16px 36px rgba(225,104,58,.28)}
.btn--accent:active{transform:translateY(1px)}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn--block{width:100%}

/* ---------- 状态标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:6px;
  font-size:13px;
  font-weight:600;
  line-height:1.6;
}
.tag--online{background:rgba(20,163,127,.12);color:#0C7A5F}
.tag--new{background:var(--c-accent);color:#fff}
.tag--limit{border:1px solid var(--c-accent);color:var(--c-accent);background:var(--c-accent-soft)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-jade);box-shadow:0 0 0 3px rgba(20,163,127,.16)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";
  display:block;
  height:4px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-jade) 52%,var(--c-accent));
}
.nav{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(145deg,var(--c-primary),var(--c-jade));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(15,95,78,.28);
}
.logo__mark svg{width:20px;height:20px}
.logo__text{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink)}
.logo__text em{font-style:normal;color:var(--c-primary)}
.nav__list{display:flex;align-items:center;gap:26px}
.nav__link{
  position:relative;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  padding:6px 0;
  transition:color .18s ease-out;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease-out;
}
.nav__link:hover{color:var(--c-primary)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--c-primary)}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__aside{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.countdown{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:6px;
  border:1px solid var(--c-accent);
  background:var(--c-accent-soft);
  color:#A8451F;
  font-size:13px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.countdown b{font-weight:700;color:var(--c-accent)}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--c-surface);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateY(-100%);
  transition:transform .24s ease-out;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer__close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);
  font-size:22px;line-height:1;color:var(--c-ink-2);
  display:flex;align-items:center;justify-content:center;
}
.drawer__list{display:flex;flex-direction:column}
.drawer__link{
  padding:16px 4px;
  font-size:17px;font-weight:600;
  border-bottom:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer__link.is-active{color:var(--c-primary)}
.drawer__foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
body.no-scroll{overflow:hidden}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 78%);
  border-bottom:1px solid var(--c-line);
}
.hero__grid-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(15,95,78,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(15,95,78,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero__inner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:76px 0 80px;
}
.hero__badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px}
.hero__title{
  font-size:40px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-ink);
}
.hero__title strong{color:var(--c-primary);font-weight:800}
.hero__sub{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:560px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:42px;
  padding-top:26px;
  border-top:1px solid var(--c-line);
}
.metric__num{font-size:26px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;line-height:1.3}
.metric__label{font-size:14px;color:var(--c-muted);line-height:1.7}
.hero__media{position:relative}
.hero__frame{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
  aspect-ratio:4/3.2;
}
.hero__frame img{width:100%;height:100%;object-fit:cover}
.hero__note{
  position:absolute;
  left:-18px;
  bottom:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:14px;
  box-shadow:var(--sh-1);
  padding:14px 18px;
  max-width:250px;
}
.hero__note b{display:block;font-size:14px;color:var(--c-primary);font-weight:700}
.hero__note span{font-size:13px;color:var(--c-muted);line-height:1.7}

/* ---------- 区块 ---------- */
.section{padding:var(--gap-section) 0}
.section--alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section__title{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--c-ink);
}
.section__desc{
  margin-top:12px;
  font-size:15px;
  color:var(--c-muted);
  max-width:640px;
  line-height:1.85;
}
.section__link{
  position:relative;
  font-size:14px;font-weight:600;color:var(--c-primary);
  white-space:nowrap;
  padding-bottom:2px;
}
.section__link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.section__link:hover::after{transform:scaleX(1)}

/* ---------- 价值主张 ---------- */
.value-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px}
.value-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.value-card--lead{
  grid-row:span 2;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:24px;
  background:linear-gradient(160deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  border-color:transparent;
  color:#fff;
}
.value-card--lead .value-card__title{color:#fff}
.value-card--lead .value-card__desc{color:rgba(255,255,255,.82)}
.value-card__icon{
  width:40px;height:40px;border-radius:12px;
  background:rgba(127,181,166,.18);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  margin-bottom:20px;
}
.value-card--lead .value-card__icon{background:rgba(255,255,255,.16);color:#fff}
.value-card__icon svg{width:20px;height:20px}
.value-card__title{font-size:20px;font-weight:700;line-height:1.5;color:var(--c-ink)}
.value-card__desc{margin-top:12px;font-size:15px;color:var(--c-ink-2);line-height:1.9}
.value-card__list{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.value-card__list li{font-size:14px;color:rgba(255,255,255,.86);display:flex;gap:8px;align-items:flex-start;line-height:1.8}
.value-card__list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary-soft);margin-top:9px;flex:0 0 6px}

/* ---------- 功能卡 ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-primary-soft)}
.feature-card--wide{
  grid-column:span 2;
  flex-direction:row;
  gap:24px;
  align-items:center;
  padding:32px;
}
.feature-card--wide .feature-card__body{flex:1 1 auto}
.feature-card__icon{
  width:40px;height:40px;border-radius:12px;
  background:var(--c-surface-2);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
  flex:0 0 40px;
}
.feature-card--wide .feature-card__icon{margin-bottom:0;width:56px;height:56px;flex:0 0 56px;border-radius:16px}
.feature-card__icon svg{width:20px;height:20px}
.feature-card--wide .feature-card__icon svg{width:26px;height:26px}
.feature-card__title{font-size:18px;font-weight:700;line-height:1.5;color:var(--c-ink)}
.feature-card--wide .feature-card__title{font-size:22px}
.feature-card__desc{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feature-card--wide .feature-card__desc{-webkit-line-clamp:3;font-size:15px}
.feature-card__link{
  margin-top:18px;font-size:14px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;
}
.feature-card__link::after{content:"→";transition:transform .18s ease-out}
.feature-card__link:hover::after{transform:translateX(4px)}

/* ---------- 使用场景 ---------- */
.scene{display:flex;flex-direction:column;gap:64px}
.scene__row{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:48px;
  align-items:center;
}
.scene__row--reverse .scene__media{order:2}
.scene__row--reverse .scene__body{order:1}
.scene__media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:var(--c-surface-2);
  aspect-ratio:4/3;
}
.scene__media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.scene__media:hover img{transform:scale(1.03)}
.scene__index{
  font-size:14px;font-weight:700;color:var(--c-accent);
  letter-spacing:.14em;
}
.scene__title{margin-top:12px;font-size:24px;font-weight:700;line-height:1.45;color:var(--c-ink)}
.scene__desc{margin-top:16px;font-size:15px;color:var(--c-ink-2);line-height:1.95}
.scene__list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.scene__list li{font-size:14px;color:var(--c-muted);display:flex;gap:10px;line-height:1.8}
.scene__list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-primary-soft);margin-top:11px;flex:0 0 5px}
.scene__link{
  margin-top:22px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.scene__link:hover{gap:12px}

/* ---------- 使用结果参考 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.case-card__name{
  font-size:13px;font-weight:600;color:var(--c-muted);
  display:inline-flex;align-items:center;gap:8px;margin-bottom:22px;
}
.case-card__name i{width:8px;height:8px;border-radius:50%;background:var(--c-primary-soft);display:block}
.case-card__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.case-stat__num{font-size:26px;font-weight:800;color:var(--c-primary);line-height:1.3;letter-spacing:-.01em}
.case-stat__label{font-size:13px;color:var(--c-muted);line-height:1.7}
.case-card__text{font-size:15px;color:var(--c-ink-2);line-height:1.9;padding-top:20px;border-top:1px solid var(--c-line)}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px 24px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.price-card::before,.price-card::after{
  content:"";position:absolute;width:18px;height:18px;border-radius:50%;
  background:var(--c-bg);border:1px solid var(--c-line);top:96px;
}
.price-card::before{left:-10px;clip-path:inset(0 0 0 50%)}
.price-card::after{right:-10px;clip-path:inset(0 50% 0 0)}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.price-card--hot{border:2px solid var(--c-primary);box-shadow:var(--sh-2)}
.price-card--hot::before,.price-card--hot::after{background:var(--c-bg)}
.price-card__badge{
  position:absolute;top:-13px;left:24px;
  background:var(--c-accent);color:#fff;
  font-size:13px;font-weight:600;padding:3px 12px;border-radius:6px;
}
.price-card__name{font-size:17px;font-weight:700;color:var(--c-ink)}
.price-card__price{margin-top:18px;display:flex;align-items:baseline;gap:8px}
.price-card__price b{font-size:34px;font-weight:800;color:var(--c-primary);letter-spacing:-.02em;line-height:1.1}
.price-card--hot .price-card__price b{color:var(--c-primary-deep)}
.price-card__price span{font-size:14px;color:var(--c-muted)}
.price-card__note{margin-top:8px;font-size:13px;color:var(--c-muted)}
.price-card__line{margin:22px 0;border-top:1px dashed var(--c-line)}
.price-card__list{display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.price-card__list li{font-size:14px;color:var(--c-ink-2);display:flex;gap:10px;line-height:1.75}
.price-card__list li::before{
  content:"";flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:50%;
  background:var(--c-surface-2);
  background-image:linear-gradient(45deg,transparent 45%,var(--c-primary) 45%,var(--c-primary) 55%,transparent 55%);
}
.price-card__foot{margin-top:26px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-card--lead{grid-column:span 3;flex-direction:row}
.news-card__cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--c-surface-2);
  flex:0 0 auto;
}
.news-card--lead .news-card__cover{width:46%;aspect-ratio:auto;min-height:260px}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.news-card:hover .news-card__cover img{transform:scale(1.03)}
.news-card__tag{
  position:absolute;top:12px;left:12px;
  background:rgba(255,255,255,.94);
  color:var(--c-primary);
  font-size:13px;font-weight:600;
  padding:3px 10px;border-radius:6px;
}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.news-card--lead .news-card__body{padding:32px}
.news-card__title{
  font-size:18px;font-weight:700;line-height:1.55;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease-out;
}
.news-card--lead .news-card__title{font-size:22px}
.news-card:hover .news-card__title{color:var(--c-primary)}
.news-card__desc{
  margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:18px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);
}
.news-card__more{color:var(--c-primary);font-weight:600}
.empty-state{
  grid-column:span 3;
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  padding:56px 24px;
  text-align:center;
}
.empty-state__icon{
  width:52px;height:52px;border-radius:16px;background:var(--c-surface-2);
  margin:0 auto 18px;display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color .18s ease-out;
}
.faq__q:hover{color:var(--c-primary)}
.faq__item.is-open .faq__q{color:var(--c-primary)}
.faq__icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:0;top:8px;width:18px;height:2px;border-radius:2px;
  background:var(--c-primary);transition:transform .18s ease-out;
}
.faq__icon::after{transform:rotate(90deg)}
.faq__item.is-open .faq__icon::after{transform:rotate(0deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .18s ease-out}
.faq__a-inner{padding:0 40px 24px 4px;font-size:15px;color:var(--c-ink-2);line-height:1.85}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,rgba(15,95,78,.08),rgba(20,163,127,.10));
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  padding:56px 0;
}
.cta-band__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band__title{font-size:24px;font-weight:700;line-height:1.45;color:var(--c-ink)}
.cta-band__text{margin-top:10px;font-size:15px;color:var(--c-muted)}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-surface-2);border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr 3fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--c-muted);line-height:1.85;max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--c-muted);transition:color .18s ease-out}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact li{font-size:14px;color:var(--c-muted);line-height:1.85;margin-bottom:10px}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--c-line);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--c-muted);
}
.footer-bottom a{color:var(--c-muted)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
  .hero__inner{gap:44px;padding:64px 0 68px}
  .hero__title{font-size:36px}
  .nav__list{gap:20px}
  .feature-grid{gap:20px}
}
@media (max-width:1023px){
  :root{--gap-section:64px}
  .container{max-width:960px;padding:0 24px}
  .nav__list{display:none}
  .nav-toggle{display:flex}
  .countdown{display:none}
  .hero__inner{grid-template-columns:1fr;gap:40px;padding:52px 0 60px}
  .hero__title{font-size:32px}
  .hero__frame{aspect-ratio:16/10}
  .hero__note{left:14px;bottom:14px}
  .value-grid{grid-template-columns:1fr}
  .value-card--lead{grid-row:auto}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-card--wide{grid-column:span 2;flex-direction:column;align-items:flex-start}
  .scene__row{grid-template-columns:1fr;gap:28px}
  .scene__row--reverse .scene__media{order:1}
  .scene__row--reverse .scene__body{order:2}
  .scene{gap:48px}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:repeat(3,1fr);gap:16px}
  .price-card{padding:24px 18px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card--lead{grid-column:span 2}
  .news-card--lead .news-card__cover{width:42%}
  .empty-state{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--gap-section:48px}
  body{font-size:16px}
  .hero__title{font-size:28px}
  .section__title{font-size:22px}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--wide{grid-column:span 1}
  .price-grid{grid-template-columns:1fr}
  .price-card::before,.price-card::after{display:none}
  .news-grid{grid-template-columns:1fr}
  .news-card--lead{grid-column:span 1;flex-direction:column}
  .news-card--lead .news-card__cover{width:100%;aspect-ratio:16/9;min-height:0}
  .empty-state{grid-column:span 1}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .hero__metrics{grid-template-columns:repeat(3,1fr);gap:12px}
  .metric__num{font-size:22px}
}
@media (max-width:559px){
  .container{padding:0 20px}
  .hero__title{font-size:26px}
  .hero__actions .btn{width:100%}
  .hero__metrics{grid-template-columns:1fr;gap:14px;text-align:left}
  .hero__grid-bg{display:none}
  .news-card{flex-direction:row}
  .news-card__cover{width:96px;height:96px;flex:0 0 96px;aspect-ratio:auto;border-radius:0}
  .news-card--lead{flex-direction:column}
  .news-card--lead .news-card__cover{width:100%;height:auto;flex:auto;aspect-ratio:16/9}
  .news-card__body{padding:16px}
  .news-card--lead .news-card__body{padding:22px}
  .news-card__title{font-size:16px;-webkit-line-clamp:3}
  .news-card__desc{display:none}
  .news-card--lead .news-card__desc{display:-webkit-box}
  .case-card__stats{grid-template-columns:1fr 1fr}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
  .faq__a-inner{padding-right:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .value-card:hover,.feature-card:hover,.price-card:hover,.news-card:hover,.case-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --c-primary:#0F5F4E;
  --c-primary-deep:#0A4539;
  --c-primary-soft:#7FB5A6;
  --c-accent:#E1683A;
  --c-accent-soft:#FCE9DF;
  --c-jade:#14A37F;
  --c-ink:#17211E;
  --c-ink-2:#3D4A46;
  --c-muted:#6C7A76;
  --c-line:#E2E8E5;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-surface-2:#EDF3F0;
  --r-btn:999px;
  --r-card:16px;
  --r-input:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,95,78,.06), 0 8px 24px rgba(15,95,78,.08);
  --sh-hover:0 4px 12px rgba(15,95,78,.10), 0 16px 40px rgba(15,95,78,.12);
  --container:1200px;
  --sp-section:88px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (min-width:1440px){:root{--container:1280px;}}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.9;color:var(--c-ink);background:var(--c-bg);}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;padding-top:4px;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);}
.site-header::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
.nav{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),var(--c-jade));display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.logo__mark svg{width:20px;height:20px;}
.logo__text{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap;}
.logo__text em{font-style:normal;color:var(--c-primary);}
.nav__list{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav__link{position:relative;display:inline-block;padding:8px 12px;font-size:14px;font-weight:600;color:var(--c-ink-2);}
.nav__link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--c-primary);}
.nav__link.is-active::after{transform:scaleX(1);}
.nav__aside{display:flex;align-items:center;gap:12px;margin-left:8px;}
.countdown{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border:1px dashed var(--c-accent);border-radius:var(--r-btn);font-size:12px;font-weight:600;color:var(--c-accent);background:var(--c-accent-soft);white-space:nowrap;}
.countdown b{font-weight:800;font-variant-numeric:tabular-nums;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;font-size:13px;font-weight:600;line-height:1.6;}
.tag--online{background:rgba(20,163,127,.10);color:#0B7358;}
.tag--soft{background:var(--c-surface-2);color:var(--c-primary);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-jade);display:inline-block;box-shadow:0 0 0 3px rgba(20,163,127,.16);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;line-height:1.2;border:1px solid transparent;background:none;transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;white-space:nowrap;}
.btn--sm{padding:9px 18px;font-size:14px;}
.btn--primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(225,104,58,.26);}
.btn--primary:hover{background:#CD5A2E;transform:translateY(-1px);box-shadow:0 10px 24px rgba(225,104,58,.32);}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(225,104,58,.24);}
.btn--ghost{border-color:var(--c-primary);color:var(--c-primary);}
.btn--ghost:hover{background:rgba(15,95,78,.07);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(1px);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface);position:relative;flex:0 0 auto;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease-out,background .2s ease-out,top .2s ease-out;}
.nav-toggle span{top:50%;transform:translate(-50%,-50%);}
.nav-toggle span::before{content:"";left:0;top:-6px;}
.nav-toggle span::after{content:"";left:0;top:6px;}
.nav.is-open .nav-toggle span{background:transparent;}
.nav.is-open .nav-toggle span::before{transform:rotate(45deg);top:0;}
.nav.is-open .nav-toggle span::after{transform:rotate(-45deg);top:0;}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:44px 0 40px;border-bottom:1px solid var(--c-line);background-color:var(--c-bg);background-image:linear-gradient(rgba(245,248,246,.95),rgba(245,248,246,.99)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;overflow:hidden;}
.article-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(15,95,78,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(15,95,78,.07) 1px,transparent 1px);background-size:36px 36px;}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:18px;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{opacity:.55;}
.article-title{font-size:40px;line-height:1.25;font-weight:800;max-width:920px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--c-muted);}
.article-meta .sep{width:1px;height:14px;background:var(--c-line);display:inline-block;}

/* ============ 正文 ============ */
.article-body{padding:56px 0 0;}
.article-wrap{max-width:760px;margin:0 auto;}
.prose{font-size:16px;line-height:1.9;color:var(--c-ink-2);word-break:break-word;}
.prose > *{margin:0;max-width:100%;}
.prose > * + *{margin-top:1.35em;}
.prose > * + h2{margin-top:2.2em;}
.prose > * + h3{margin-top:1.7em;}
.prose > h2 + *,.prose > h3 + *{margin-top:.7em;}
.prose h2{position:relative;padding-left:16px;font-size:24px;line-height:1.45;font-weight:700;color:var(--c-ink);}
.prose h2::before{content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;border-radius:2px;background:var(--c-primary);}
.prose h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--c-ink);}
.prose p{line-height:1.9;}
.prose blockquote{background:#EAF4F1;border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;padding:16px 20px;color:var(--c-ink-2);}
.prose blockquote p + p{margin-top:.8em;}
.prose ul,.prose ol{padding-left:1.35em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-top:.55em;line-height:1.85;}
.prose img{border-radius:var(--r-img);border:1px solid var(--c-line);margin-left:auto;margin-right:auto;}
.prose figure{margin:1.6em 0;}
.prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.prose a{color:var(--c-primary);border-bottom:1px solid rgba(15,95,78,.3);}
.prose a:hover{color:var(--c-primary-deep);border-bottom-color:var(--c-primary-deep);}
.prose strong{color:var(--c-ink);}
.prose code{background:var(--c-surface-2);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--c-primary-deep);}
.prose table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--c-line);border-radius:10px;overflow:hidden;}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--c-line);border-right:1px solid var(--c-line);text-align:left;}
.prose th:last-child,.prose td:last-child{border-right:0;}
.prose tbody tr:last-child td{border-bottom:0;}
.prose thead th{background:var(--c-surface-2);color:var(--c-ink);font-weight:700;}
.prose tbody tr:nth-child(even){background:#FAFCFB;}

/* ============ 空态 ============ */
.empty-state{text-align:center;padding:64px 24px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);}
.empty-state__icon{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--c-surface-2);color:var(--c-primary);display:flex;align-items:center;justify-content:center;}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:22px;}

/* ============ 相关推荐 ============ */
.related{padding:64px 0 var(--sp-section);margin-top:64px;background:var(--c-surface);border-top:1px solid var(--c-line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:26px;font-weight:700;}
.section-head p{font-size:14px;color:var(--c-muted);margin-top:6px;}
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .2s ease-out,box-shadow .2s ease-out;}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card__media img{transform:scale(1.03);}
.card__media .tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--c-primary);backdrop-filter:blur(4px);}
.card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{font-size:18px;font-weight:700;line-height:1.5;color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__text{font-size:14px;line-height:1.8;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);}
.link-arrow{color:var(--c-primary);font-weight:600;}
.card:hover .link-arrow{color:var(--c-primary-deep);}
.related-foot{display:flex;justify-content:center;margin-top:36px;}

/* ============ 收尾 CTA ============ */
.cta-band{padding:0 0 var(--sp-section);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:36px 40px;border:1px solid var(--c-line);border-radius:20px;background:linear-gradient(120deg,#E7F2EE,#FDF0E8);}
.cta-inner h2{font-size:24px;line-height:1.45;font-weight:700;}
.cta-inner p{font-size:15px;color:var(--c-ink-2);margin-top:8px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-surface-2);border-top:1px solid var(--c-line);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--c-muted);max-width:320px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--c-ink);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-muted);}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--c-muted);}
.footer-contact a{color:var(--c-primary);}
.footer-bottom{border-top:1px solid var(--c-line);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav{gap:16px;}
  .nav__link{padding:8px 10px;}
  .nav__link::after{left:10px;right:10px;}
}
@media (max-width:1100px){
  .countdown{display:none;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .nav-toggle{display:block;}
  .nav__list{position:fixed;top:72px;left:0;right:0;bottom:0;margin:0;z-index:70;padding:20px;background:var(--c-surface);border-top:1px solid var(--c-line);flex-direction:column;align-items:stretch;gap:0;overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;}
  .nav.is-open .nav__list{opacity:1;visibility:visible;transform:none;}
  .nav__link{display:block;padding:15px 8px;font-size:16px;border-bottom:1px solid var(--c-line);}
  .nav__link::after{display:none;}
  .nav__aside{margin-left:auto;gap:10px;}
  .tag--online{display:none;}
  .nav__aside .btn--primary{position:fixed;left:20px;right:20px;bottom:24px;z-index:90;display:none;justify-content:center;}
  .nav.is-open .nav__aside .btn--primary{display:inline-flex;}
  .nav-toggle{z-index:95;}
  .article-title{font-size:32px;}
  .cta-inner{padding:28px 26px;}
}
@media (max-width:768px){
  :root{--sp-section:64px;}
  .article-hero{padding:32px 0 28px;}
  .article-title{font-size:29px;}
  .article-body{padding:40px 0 0;}
  .prose h2{font-size:21px;}
  .prose h3{font-size:18px;}
  .related{margin-top:48px;padding-top:48px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-inner h2{font-size:21px;}
}
@media (max-width:560px){
  :root{--sp-section:48px;}
  .container{padding:0 20px;}
  .article-hero::after{display:none;}
  .article-title{font-size:26px;}
  .logo__text{font-size:18px;}
  .article-meta{gap:10px;font-size:13px;}
  .empty-state{padding:44px 18px;}
  .cta-inner{padding:24px 20px;}
  .empty-state .btn,.cta-inner .btn,.related-foot .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F5F4E;
  --c-primary-deep:#0A4539;
  --c-primary-soft:#7FB5A6;
  --c-accent:#E1683A;
  --c-accent-soft:#FCE9DF;
  --c-jade:#14A37F;
  --c-ink:#17211E;
  --c-ink-2:#3D4A46;
  --c-muted:#6C7A76;
  --c-line:#E2E8E5;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-surface-2:#EDF3F0;
  --r-btn:999px;
  --r-card:16px;
  --r-input:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,95,78,.06),0 8px 24px rgba(15,95,78,.08);
  --sh-2:0 4px 12px rgba(15,95,78,.10),0 16px 40px rgba(15,95,78,.12);
  --sec:88px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em;font-weight:700}
h1{font-size:40px;line-height:1.25;font-weight:800}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;line-height:1.5}
p{margin:0}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-primary-deep)}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
a:focus:not(:focus-visible),button:focus:not(:focus-visible){outline:none}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sec) 0}
.section--alt{background:var(--c-surface-2)}
.section--tight{padding-top:64px}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{margin-bottom:16px}
.section-head p{font-size:16px;line-height:1.9;color:var(--c-muted)}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  padding:4px 10px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:rgba(15,95,78,.08);
  border-radius:6px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  padding-top:4px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-jade) 55%,var(--c-accent));
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--c-ink);
  text-decoration:none;
}
.logo__mark{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  box-shadow:0 4px 12px rgba(15,95,78,.22);
}
.logo__mark svg{width:20px;height:20px}
.logo__text{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-ink);
  line-height:1;
}
.logo__text em{
  font-style:normal;
  color:var(--c-primary);
}
.nav__list{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav__link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  text-decoration:none;
  transition:color .18s ease;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.nav__link:hover{color:var(--c-primary)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--c-primary)}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__aside{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.countdown{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary-deep);
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  white-space:nowrap;
}
.countdown b{
  font-variant-numeric:tabular-nums;
  color:var(--c-accent);
  letter-spacing:.02em;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-size:13px;
  font-weight:600;
  border-radius:6px;
  white-space:nowrap;
}
.tag--online{
  color:var(--c-jade);
  background:rgba(20,163,127,.10);
}
.dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-jade);
  box-shadow:0 0 0 0 rgba(20,163,127,.45);
  animation:pulse 2.4s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(20,163,127,.40)}
  70%{box-shadow:0 0 0 8px rgba(20,163,127,0)}
  100%{box-shadow:0 0 0 0 rgba(20,163,127,0)}
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  cursor:pointer;
  text-decoration:none;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn--primary{
  color:#fff;
  background:var(--c-primary);
  box-shadow:var(--sh-1);
}
.btn--primary:hover{
  color:#fff;
  background:var(--c-primary-deep);
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn--primary:active{transform:translateY(0)}
.btn--accent{
  color:#fff;
  background:var(--c-accent);
  box-shadow:0 1px 2px rgba(225,104,58,.18),0 8px 24px rgba(225,104,58,.20);
}
.btn--accent:hover{
  color:#fff;
  background:#C95626;
  transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(225,104,58,.24),0 16px 40px rgba(225,104,58,.26);
}
.btn--ghost{
  color:var(--c-ink-2);
  background:transparent;
  border-color:var(--c-line);
}
.btn--ghost:hover{
  color:var(--c-primary);
  border-color:var(--c-primary);
  background:rgba(15,95,78,.04);
}
.btn--sm{
  padding:9px 18px;
  font-size:14px;
}
.nav-toggle{
  display:none;
  position:relative;
  width:42px;
  height:42px;
  padding:0;
  align-items:center;
  justify-content:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:12px;
  cursor:pointer;
}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-ink);
  transition:background-color .2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-ink);
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav.is-open .nav-toggle span{background:transparent}
.nav.is-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
.nav.is-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 72px;
  background:var(--c-bg) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(245,248,246,.95),rgba(245,248,246,.88));
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(15,95,78,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(15,95,78,.06) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:22px;
  font-size:14px;
  color:var(--c-muted);
}
.breadcrumb a{
  color:var(--c-muted);
  transition:color .18s ease;
}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .is-current{color:var(--c-ink-2);font-weight:600}
.page-hero h1{
  max-width:900px;
  margin-bottom:20px;
}
.page-hero__lead{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.page-hero__actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid rgba(15,95,78,.12);
}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts b{
  font-size:24px;
  font-weight:800;
  line-height:1.25;
  color:var(--c-primary);
}
.hero-facts span{
  font-size:14px;
  color:var(--c-muted);
}

/* ---------- grid & feature cards ---------- */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.fcard{
  display:flex;
  flex-direction:column;
  padding:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.fcard__icon{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  margin-bottom:18px;
  color:var(--c-primary);
  background:var(--c-surface-2);
  border-radius:10px;
}
.fcard__icon svg{width:20px;height:20px}
.fcard h3{margin-bottom:10px}
.fcard p{font-size:15px;line-height:1.85;color:var(--c-ink-2)}
.fcard .link-more{margin-top:18px}
.fcard--wide{
  grid-column:span 2;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  align-items:center;
  gap:28px;
  padding:32px;
}
.fcard--wide .fcard__body{display:flex;flex-direction:column}
.fcard--wide h3{font-size:22px}
.fcard--wide p{font-size:16px}
.fcard__media{
  overflow:hidden;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  background:var(--c-surface-2);
}
.fcard__media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .25s ease-out;
}
.fcard--wide:hover .fcard__media img{transform:scale(1.03)}
.link-more{
  position:relative;
  display:inline-block;
  align-self:flex-start;
  padding-bottom:2px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.link-more::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.link-more:hover::after{transform:scaleX(1)}

/* ---------- spec table ---------- */
.table-wrap{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
}
.spec-table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
.spec-table caption{
  padding:16px 20px;
  font-size:14px;
  color:var(--c-muted);
  text-align:left;
}
.spec-table th,
.spec-table td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
.spec-table thead th{
  font-size:13px;
  font-weight:600;
  color:var(--c-primary-deep);
  background:var(--c-surface-2);
  white-space:nowrap;
}
.spec-table tbody tr:nth-child(even){background:#FAFCFB}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table td:first-child{
  font-weight:600;
  color:var(--c-ink);
  white-space:nowrap;
}
.spec-note{
  margin-top:20px;
  font-size:14px;
  color:var(--c-muted);
}

/* ---------- faq ---------- */
.faq{
  border-top:1px solid var(--c-line);
}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  text-align:left;
  background:transparent;
  border:none;
  cursor:pointer;
  transition:color .18s ease;
}
.faq__q:hover{color:var(--c-primary)}
.faq__icon{
  position:relative;
  flex:none;
  width:18px;
  height:18px;
}
.faq__icon::before,
.faq__icon::after{
  content:"";
  position:absolute;
  border-radius:2px;
  background:var(--c-primary);
  transition:transform .18s ease;
}
.faq__icon::before{left:0;top:8px;width:18px;height:2px}
.faq__icon::after{left:8px;top:0;width:2px;height:18px}
.faq__item.is-open .faq__icon::after{transform:scaleY(0)}
.faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease;
}
.faq__item.is-open .faq__a{max-height:420px}
.faq__a p{
  max-width:840px;
  padding-bottom:22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
}

/* ---------- cta band ---------- */
.cta-band{
  padding:56px 0;
  background:linear-gradient(120deg,#E7F1ED,#EDF3F0);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.cta-band__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-band h2{margin-bottom:10px;font-size:24px}
.cta-band p{font-size:15px;color:var(--c-ink-2);max-width:620px}
.cta-band__actions{
  display:flex;
  gap:14px;
  flex:none;
}

/* ---------- footer ---------- */
.site-footer{
  padding:64px 0 28px;
  background:var(--c-surface-2);
  border-top:1px solid var(--c-line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand p{
  margin-top:16px;
  max-width:320px;
  font-size:14px;
  line-height:1.85;
  color:var(--c-muted);
}
.footer-title{
  margin-bottom:16px;
  font-size:15px;
  font-weight:700;
  color:var(--c-ink);
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:14px;
  color:var(--c-muted);
  transition:color .18s ease;
}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:14px;
  color:var(--c-muted);
}
.footer-contact a{color:var(--c-primary)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding-top:22px;
  font-size:13px;
  color:var(--c-muted);
}

/* ---------- responsive ---------- */
@media (min-width:1440px){
  :root{--container:1280px}
}
@media (max-width:1279px){
  :root{--container:960px;--sec:72px}
  h1{font-size:36px}
  .fcard--wide{padding:28px;gap:24px}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .countdown{display:none}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fcard--wide{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav__aside .btn--primary{display:none}
  .nav__aside .tag--online{display:none}
  .nav__list{
    position:fixed;
    top:72px;
    left:0;
    right:0;
    bottom:0;
    z-index:90;
    display:flex;
    flex-direction:column;
    gap:0;
    padding:16px 20px 120px;
    background:var(--c-surface);
    border-top:1px solid var(--c-line);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .nav.is-open .nav__list{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }
  .nav__link{
    display:block;
    padding:16px 4px;
    font-size:17px;
    border-bottom:1px solid var(--c-line);
  }
  .nav__link::after{display:none}
  .nav.is-open .nav__aside .btn--primary{
    display:inline-flex;
    position:fixed;
    left:20px;
    right:20px;
    bottom:24px;
    z-index:95;
  }
  body.nav-open{overflow:hidden}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 20px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .page-hero{padding:36px 0 48px}
  .page-hero::after{display:none}
  .page-hero__actions{gap:12px}
  .page-hero__actions .btn{flex:1 1 160px}
  .hero-facts{gap:22px}
  .hero-facts b{font-size:20px}
  .grid--3{grid-template-columns:1fr}
  .fcard--wide{
    grid-column:span 1;
    grid-template-columns:1fr;
    padding:24px;
  }
  .fcard--wide .fcard__media{order:-1}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-band__actions{width:100%;flex-wrap:wrap}
  .cta-band__actions .btn{flex:1 1 150px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .logo__text{font-size:18px}
  .nav__aside{gap:8px}
  .section-head{margin-bottom:32px}
  .faq__q{font-size:16px;padding:18px 0}
  .spec-table caption{padding:14px 16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F5F4E;
  --c-primary-deep:#0A4539;
  --c-primary-soft:#7FB5A6;
  --c-accent:#E1683A;
  --c-accent-soft:#FCE9DF;
  --c-jade:#14A37F;
  --c-ink:#17211E;
  --c-ink-2:#3D4A46;
  --c-muted:#6C7A76;
  --c-line:#E2E8E5;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-surface-2:#EDF3F0;
  --radius-sm:10px;
  --radius:16px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(15,95,78,.06), 0 8px 24px rgba(15,95,78,.08);
  --shadow-hover:0 4px 12px rgba(15,95,78,.10), 0 16px 40px rgba(15,95,78,.12);
  --container:1200px;
  --gap-section:88px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease-out;}
a:hover{color:var(--c-primary-deep);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:var(--gap-section) 0;}
.section--alt{background:var(--c-surface-2);}
.section--surface{background:var(--c-surface);}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";
  display:block;
  height:4px;
  background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-jade) 55%,var(--c-accent) 100%);
}
.nav{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-ink);
  flex-shrink:0;
}
.logo:hover{color:var(--c-ink);}
.logo__mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-jade) 100%);
  box-shadow:0 4px 12px rgba(15,95,78,.22);
}
.logo__mark svg{width:20px;height:20px;}
.logo__text{font-size:20px;font-weight:800;letter-spacing:-.01em;}
.logo__text em{font-style:normal;color:var(--c-primary);}
.nav__list{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav__link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  border-radius:8px;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 180ms ease-out;
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--c-primary);}
.nav__link.is-active::after{transform:scaleX(1);}
.nav__aside{display:flex;align-items:center;gap:12px;margin-left:auto;}
.countdown{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--c-accent);
  border:1px solid var(--c-accent);
  border-radius:var(--radius-pill);
  padding:4px 12px;
  background:var(--c-accent-soft);
  white-space:nowrap;
}
.countdown b{font-variant-numeric:tabular-nums;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  font-size:13px;
  font-weight:600;
  border-radius:6px;
  white-space:nowrap;
}
.tag--online{color:var(--c-primary-deep);background:#E4F2ED;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-jade);box-shadow:0 0 0 3px rgba(20,163,127,.18);}
.tag--new{color:#fff;background:var(--c-accent);}
.tag--soft{color:var(--c-primary);background:var(--c-surface-2);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:11px;right:11px;
  height:2px;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span{top:19px;}
.nav-toggle span::before{top:-6px;left:0;right:0;}
.nav-toggle span::after{top:6px;left:0;right:0;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:700;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  transition:all var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(15,95,78,.18);}
.btn--primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn--primary:active{transform:translateY(1px);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#C9562C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn--ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary);color:#fff;transform:translateY(-1px);}
.btn--sm{padding:8px 16px;font-size:14px;}
.btn--block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--c-primary);
}
.link-arrow::after{content:"→";transition:transform 180ms ease-out;}
.link-arrow:hover::after{transform:translateX(4px);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(15,95,78,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,95,78,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.9;
  pointer-events:none;
}
.hero__inner{position:relative;padding:44px 0 64px;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-muted);
  margin-bottom:26px;
}
.crumb a{color:var(--c-muted);font-weight:600;}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{color:var(--c-line);}
.crumb strong{color:var(--c-ink-2);font-weight:600;}
.hero__grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero h1{
  font-size:40px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-ink);
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero__sub{
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:56ch;
}
.hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 26px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero__media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--shadow);
  aspect-ratio:4/3;
}
.hero__media img{width:100%;height:100%;object-fit:cover;}
.hero__media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:#fff;
  background:linear-gradient(180deg,rgba(10,69,57,0) 0%,rgba(10,69,57,.82) 100%);
}

/* ============ Metrics ============ */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:44px;
}
.metric{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:18px 20px;
  box-shadow:var(--shadow);
}
.metric b{
  display:block;
  font-size:26px;
  line-height:1.2;
  font-weight:800;
  color:var(--c-primary);
  letter-spacing:-.01em;
}
.metric span{font-size:13px;color:var(--c-muted);font-weight:600;}

/* ============ Layout: TOC + Longform ============ */
.layout{
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:22px 20px;
  box-shadow:var(--shadow);
}
.toc__title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--c-muted);
  text-transform:uppercase;
  margin-bottom:14px;
}
.toc__list{display:flex;flex-direction:column;gap:4px;}
.toc__list a{
  display:flex;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  line-height:1.6;
}
.toc__list a i{
  font-style:normal;
  font-size:12px;
  font-weight:800;
  color:var(--c-primary-soft);
}
.toc__list a:hover{background:var(--c-surface-2);color:var(--c-primary);}
.toc__list a:hover i{color:var(--c-primary);}
.toc__note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-muted);
  line-height:1.8;
}

.longform{display:flex;flex-direction:column;gap:56px;}
.article-block{
  scroll-margin-top:96px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.article-block__head{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.article-block__num{
  flex-shrink:0;
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--c-surface-2);
  color:var(--c-primary);
  font-size:15px;font-weight:800;
  letter-spacing:.02em;
}
.article-block h2{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
}
.article-block p{color:var(--c-ink-2);margin-bottom:1.4em;}
.article-block p:last-child{margin-bottom:0;}
.point-list{display:flex;flex-direction:column;gap:12px;margin:22px 0 24px;}
.point-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.8;
}
.point-list li::before{
  content:"";
  flex-shrink:0;
  width:18px;height:18px;
  margin-top:7px;
  border-radius:6px;
  background:var(--c-surface-2);
  border:1px solid var(--c-primary-soft);
  background-image:linear-gradient(135deg,var(--c-primary) 40%,transparent 40%);
  background-size:9px 9px;
  background-position:center;
  background-repeat:no-repeat;
}
.article-figure{
  margin:24px 0 0;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--ease);}
.article-figure:hover img{transform:scale(1.03);}
.article-figure figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--c-muted);
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
}
.quote{
  margin:24px 0 0;
  padding:16px 20px;
  background:#EAF6F2;
  border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;
  font-size:15px;
  color:var(--c-ink-2);
}

/* ============ Scenes cards ============ */
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.section-head p{color:var(--c-muted);font-size:15px;line-height:1.9;}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.scene-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.scene-card__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.scene-card:hover .scene-card__media img{transform:scale(1.03);}
.scene-card__tag{
  position:absolute;left:12px;top:12px;
  padding:4px 10px;
  font-size:13px;font-weight:600;
  border-radius:6px;
  background:rgba(255,255,255,.92);
  color:var(--c-primary);
}
.scene-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-card h3{font-size:19px;line-height:1.5;font-weight:700;}
.scene-card p{font-size:14px;line-height:1.8;color:var(--c-muted);}
.scene-card__foot{margin-top:auto;padding-top:6px;}

/* ============ FAQ ============ */
.faq-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  padding:8px 28px;
  box-shadow:var(--shadow);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:8px;
  background:var(--c-surface-2);
  color:var(--c-primary);
  font-size:17px;
  font-weight:700;
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"×";transform:rotate(0deg);}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item__answer{
  padding:0 0 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:78ch;
}

/* ============ CTA band ============ */
.cta-band{
  background:#EAF6F2;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.cta-band__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:26px;
  line-height:1.4;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:8px;
}
.cta-band p{color:var(--c-ink-2);font-size:15px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ Footer ============ */
.site-footer{
  background:var(--c-surface-2);
  border-top:1px solid var(--c-line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--c-muted);
  max-width:34ch;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--c-ink);
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-muted);font-weight:600;}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact li{
  font-size:14px;
  color:var(--c-muted);
  line-height:1.9;
  margin-bottom:8px;
}
.footer-contact a{color:var(--c-primary);font-weight:600;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:var(--c-muted);
}

/* ============ Responsive ============ */
@media (max-width:1279px){
  :root{--container:960px;--gap-section:72px;}
  .hero h1{font-size:36px;}
  .layout{grid-template-columns:220px minmax(0,1fr);gap:32px;}
}
@media (max-width:1023px){
  .nav{gap:16px;}
  .nav__list{margin-left:0;}
  .countdown{display:none;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero__media{aspect-ratio:16/9;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  :root{--gap-section:48px;}
  .container{padding:0 20px;}
  .nav{height:62px;}
  .nav__list{
    position:fixed;
    inset:66px 0 0 0;
    margin:0;
    padding:24px 20px 96px;
    background:var(--c-surface);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    overflow-y:auto;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    z-index:110;
  }
  .site-header.nav-open .nav__list{opacity:1;visibility:visible;transform:translateY(0);}
  .nav__link{display:block;padding:14px 12px;font-size:16px;border-radius:12px;}
  .nav__link:hover{background:var(--c-surface-2);}
  .nav__link::after{display:none;}
  .nav__link.is-active{background:var(--c-surface-2);}
  .nav-toggle{display:block;}
  .site-header.nav-open .nav-toggle span{background:transparent;}
  .site-header.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
  .site-header.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}
  .nav__aside .btn--sm{display:none;}
  .hero__inner{padding:28px 0 44px;}
  .hero h1{font-size:28px;}
  .hero__sub{font-size:16px;}
  .hero__actions .btn{width:100%;}
  .metrics{grid-template-columns:1fr 1fr;gap:12px;}
  .metric{padding:14px 16px;}
  .metric b{font-size:22px;}
  .article-block{padding:22px;}
  .article-block h2{font-size:22px;}
  .article-block__num{width:36px;height:36px;font-size:14px;}
  .section-head h2{font-size:22px;}
  .scene-grid{grid-template-columns:1fr;}
  .faq-list{padding:4px 18px;}
  .faq-item summary{font-size:16px;padding:16px 0;}
  .cta-band h2{font-size:21px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:559px){
  .hero::before{display:none;}
  .hero__tags{gap:8px;}
  .point-list li{font-size:14px;}
  .quote{font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#0F5F4E;
  --c-primary-deep:#0A4539;
  --c-primary-soft:#7FB5A6;
  --c-accent:#E1683A;
  --c-accent-soft:#FCE9DF;
  --c-jade:#14A37F;
  --c-ink:#17211E;
  --c-ink-2:#3D4A46;
  --c-muted:#6C7A76;
  --c-line:#E2E8E5;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-surface-2:#EDF3F0;

  --r-btn:999px;
  --r-card:16px;
  --r-input:10px;
  --r-img:12px;

  --sh-1:0 1px 2px rgba(15,95,78,.06), 0 8px 24px rgba(15,95,78,.08);
  --sh-2:0 4px 12px rgba(15,95,78,.10), 0 16px 40px rgba(15,95,78,.12);

  --sp-section:88px;
  --w-container:1200px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-0.01em;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:28px;line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:700;}
h4{font-size:16px;line-height:1.6;font-weight:700;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--w-container);
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){
  :root{--w-container:1280px;}
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";
  display:block;
  height:4px;
  background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-jade) 55%,var(--c-accent) 100%);
}
.nav{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo__mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-jade));
  box-shadow:0 4px 12px rgba(15,95,78,.22);
}
.logo__mark svg{width:20px;height:20px;}
.logo__text{
  font-size:20px;
  font-weight:800;
  letter-spacing:-0.01em;
  color:var(--c-ink);
  white-space:nowrap;
}
.logo__text em{font-style:normal;color:var(--c-primary);}
.nav__list{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 0 0 8px;
}
.nav__link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease-out;
}
.nav__link:hover,.nav__link:focus-visible{color:var(--c-primary);}
.nav__link:hover::after,.nav__link:focus-visible::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--c-primary);}
.nav__link.is-active::after{transform:scaleX(1);}
.nav__aside{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.countdown{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--c-accent);
  border:1px solid var(--c-accent);
  border-radius:var(--r-btn);
  padding:5px 12px;
  background:#fff;
  white-space:nowrap;
}
.countdown b{font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border-radius:6px;
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
}
.tag--online{background:#E7F5F1;color:var(--c-primary);}
.tag--online .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--c-jade);
  box-shadow:0 0 0 3px rgba(20,163,127,.18);
  animation:pulse 2.2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(20,163,127,.18);}
  50%{box-shadow:0 0 0 6px rgba(20,163,127,.06);}
}
.tag--accent{background:var(--c-accent);color:#fff;}
.tag--soft{background:var(--c-accent-soft);color:#A6431F;border:1px solid rgba(225,104,58,.35);}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(15,95,78,.20);}
.btn--primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 10px 24px rgba(15,95,78,.26);}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(15,95,78,.18);}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(225,104,58,.24);}
.btn--accent:hover{background:#C9562C;transform:translateY(-1px);}
.btn--accent:active{transform:translateY(1px);}
.btn--ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--c-ink);}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--ghost:active{transform:translateY(1px);}
.btn--sm{padding:9px 18px;font-size:13px;}
.btn--block{width:100%;}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

/* 汉堡 */
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:12px;
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  background:var(--c-ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span::before{transform:translate(-50%,-7px);}
.nav-toggle span::after{transform:translate(-50%,7px);}
.site-header.is-open .nav-toggle span{background:transparent;}
.site-header.is-open .nav-toggle span::before{transform:translate(-50%,0) rotate(45deg);}
.site-header.is-open .nav-toggle span::after{transform:translate(-50%,0) rotate(-45deg);}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-section) 0;}
.section--surface{background:var(--c-surface);}
.section--soft{background:var(--c-surface-2);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:#E7F5F1;
  border-radius:6px;
  padding:5px 10px;
  margin-bottom:14px;
}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:16px;}
.lead{color:var(--c-ink-2);font-size:16px;}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-muted);
  margin-bottom:22px;
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;}
.crumb .sep{color:var(--c-line);}
.crumb .now{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:56px 0 72px;
  background:var(--c-surface);
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(15,95,78,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,95,78,.05) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.hero__grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--c-primary);}
.hero__lead{
  font-size:17px;
  color:var(--c-ink-2);
  max-width:560px;
  margin-bottom:24px;
}
.hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:32px;
}
.hero__stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  border-top:1px solid var(--c-line);
  padding-top:24px;
  max-width:620px;
}
.stat b{
  display:block;
  font-size:26px;
  font-weight:800;
  color:var(--c-primary);
  line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.stat span{font-size:13px;color:var(--c-muted);}
.hero__visual{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
}
.hero__visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.hero__visual:hover img{transform:scale(1.03);}
.hero__chip{
  position:absolute;
  left:18px;
  bottom:18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.95);
  border:1px solid var(--c-line);
  border-radius:12px;
  padding:10px 14px;
  box-shadow:var(--sh-1);
  font-size:13px;
  font-weight:600;
  color:var(--c-ink);
}
.hero__chip b{color:var(--c-primary);font-size:15px;}

/* ============ 价格卡 ============ */
.price-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:stretch;
}
.price-card{
  position:relative;
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px 26px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.price-card.is-featured{
  border:2px solid var(--c-primary);
  box-shadow:var(--sh-2);
  padding:38px 26px 32px;
}
.price-card__badge{
  position:absolute;
  top:-13px;
  left:26px;
  background:var(--c-accent);
  color:#fff;
  font-size:13px;
  font-weight:600;
  padding:5px 12px;
  border-radius:6px;
  box-shadow:0 6px 14px rgba(225,104,58,.28);
}
.price-card__name{font-size:20px;font-weight:700;margin-bottom:6px;}
.price-card__desc{font-size:14px;color:var(--c-muted);min-height:44px;margin-bottom:20px;}
.price-card__amount{
  display:flex;
  align-items:baseline;
  gap:6px;
  padding-bottom:20px;
  border-bottom:1px dashed var(--c-line);
  margin-bottom:20px;
}
.price-card__amount b{
  font-size:40px;
  font-weight:800;
  color:var(--c-primary);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.price-card__amount i{font-style:normal;font-size:14px;color:var(--c-muted);}
.price-card__list{display:grid;gap:12px;margin-bottom:26px;}
.price-card__list li{
  position:relative;
  padding-left:26px;
  font-size:14px;
  line-height:1.75;
  color:var(--c-ink-2);
}
.price-card__list li::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:16px;height:16px;
  border-radius:50%;
  background:#E7F5F1;
  border:1px solid rgba(20,163,127,.35);
}
.price-card__list li::after{
  content:"";
  position:absolute;
  left:5px;top:11px;
  width:5px;height:8px;
  border-right:2px solid var(--c-jade);
  border-bottom:2px solid var(--c-jade);
  transform:rotate(42deg);
}
.price-card .btn{margin-top:auto;}
.price-note{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  font-size:14px;
  color:var(--c-muted);
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:18px 22px;
}
.price-note span{display:inline-flex;align-items:center;gap:8px;}
.price-note span::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary-soft);
}

/* ============ 折叠面板 ============ */
.acc{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.acc-item + .acc-item{border-top:1px solid var(--c-line);}
.acc-head{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  transition:background .18s ease,color .18s ease;
}
.acc-head:hover{background:#F7FBFA;color:var(--c-primary);}
.acc-head span small{
  display:block;
  font-size:13px;
  font-weight:400;
  color:var(--c-muted);
  margin-top:4px;
}
.acc-icon{
  position:relative;
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  transition:transform .18s ease-out,background .18s ease;
}
.acc-icon::before,.acc-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.acc-icon::before{width:10px;height:2px;}
.acc-icon::after{width:2px;height:10px;transition:opacity .18s ease;}
.acc-item.is-open .acc-icon{transform:rotate(180deg);background:#E7F5F1;}
.acc-item.is-open .acc-icon::after{opacity:0;}
.acc-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease-out;
}
.acc-item.is-open .acc-panel{max-height:1200px;}
.acc-inner{padding:0 24px 26px;}
.acc-inner > p{font-size:15px;color:var(--c-ink-2);max-width:860px;}
.acc-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:18px;
}
.acc-cell{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:12px;
  padding:18px;
}
.acc-cell h4{margin-bottom:8px;font-size:15px;color:var(--c-primary);}
.acc-cell p{font-size:14px;color:var(--c-ink-2);line-height:1.8;}

/* ============ 支持服务 ============ */
.support{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.support__media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:var(--c-surface-2);
}
.support__media img{width:100%;aspect-ratio:5/4;object-fit:cover;}
.support__list{display:grid;gap:18px;margin-top:24px;}
.support__item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.support__item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.support__num{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  background:#E7F5F1;
  color:var(--c-primary);
  font-weight:800;
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.support__item h3{font-size:17px;margin-bottom:6px;}
.support__item p{font-size:14px;color:var(--c-ink-2);margin:0;}

/* ============ 表单 ============ */
.form-wrap{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:start;
}
.form-aside{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
}
.form-aside h3{margin-bottom:14px;}
.form-aside .list{display:grid;gap:12px;margin-top:18px;}
.form-aside .list li{
  font-size:14px;
  color:var(--c-ink-2);
  padding-left:20px;
  position:relative;
}
.form-aside .list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:3px;
  background:var(--c-primary-soft);
}
.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:14px;font-weight:600;color:var(--c-ink-2);}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:#FAFCFB;
  color:var(--c-ink);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--c-primary-soft);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  background:#fff;
  box-shadow:0 0 0 3px rgba(15,95,78,.10);
}
.field.has-error input,.field.has-error textarea{border-color:var(--c-accent);}
.field .hint{font-size:13px;color:var(--c-muted);}
.field .err{font-size:13px;color:var(--c-accent);display:none;}
.field.has-error .err{display:block;}
.form-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:6px;
}
.form-foot .tip{font-size:13px;color:var(--c-muted);max-width:360px;}
.form-status{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--r-input);
  background:#E7F5F1;
  border:1px solid rgba(20,163,127,.3);
  color:var(--c-primary);
  font-size:14px;
}
.form-status.is-show{display:block;}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto;}
.faq-item{border-top:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 4px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-mark{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
}
.faq-mark::before,.faq-mark::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:opacity .18s ease;
}
.faq-mark::before{width:12px;height:2px;}
.faq-mark::after{width:2px;height:12px;}
.faq-item.is-open .faq-mark::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease-out;
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a p{
  padding:0 4px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:820px;
}

/* ============ 收尾 CTA ============ */
.cta-band{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--c-line);
  background-image:linear-gradient(120deg,rgba(10,69,57,.92),rgba(15,95,78,.86)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:56px 44px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;max-width:620px;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.86);max-width:640px;font-size:16px;margin-bottom:26px;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn--ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.cta-band .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-surface-2);
  border-top:1px solid var(--c-line);
  padding:56px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--c-muted);
  max-width:320px;
  line-height:1.8;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-links{display:grid;gap:10px;}
.footer-links a{
  font-size:14px;
  color:var(--c-muted);
}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact{display:grid;gap:10px;font-size:14px;color:var(--c-muted);}
.footer-contact a{color:var(--c-primary);}
.footer-contact a:hover{text-decoration:underline;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  font-size:13px;
  color:var(--c-muted);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--w-container:1000px;}
  .hero__stats{max-width:100%;}
}
@media (max-width:1023px){
  :root{
    --w-container:100%;
    --sp-section:64px;
  }
  .container{padding:0 24px;}
  .countdown{display:none;}
  .nav__list{
    position:fixed;
    left:0;right:0;
    top:72px;bottom:0;
    margin:0;
    padding:20px 24px 32px;
    background:var(--c-surface);
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    overflow-y:auto;
    opacity:0;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .2s ease-out,transform .2s ease-out;
    border-top:1px solid var(--c-line);
  }
  .site-header.is-open .nav__list{opacity:1;pointer-events:auto;transform:translateY(0);}
  .nav__link{
    display:block;
    padding:14px 12px;
    font-size:16px;
    border-bottom:1px solid var(--c-line);
  }
  .nav__link::after{display:none;}
  .nav-toggle{display:block;}
  .hero{padding:36px 0 56px;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero__visual{order:-1;}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto;}
  .acc-grid{grid-template-columns:1fr;}
  .support{grid-template-columns:1fr;gap:32px;}
  .form-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:44px 30px;}
}
@media (max-width:767px){
  h1{font-size:30px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .hero h1{font-size:28px;}
  .hero__stats{grid-template-columns:1fr 1fr;gap:16px;}
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:24px;}
  .form-aside{padding:24px;}
  .price-card{padding:26px 22px;}
  .price-card.is-featured{padding:32px 22px 26px;}
  .acc-head{padding:18px;font-size:16px;}
  .acc-inner{padding:0 18px 22px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:559px){
  :root{--sp-section:48px;}
  .container{padding:0 20px;}
  body{font-size:16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .hero__actions{flex-direction:column;align-items:stretch;}
  .hero__actions .btn{width:100%;}
  .cta-band .actions{flex-direction:column;}
  .cta-band .actions .btn{width:100%;}
  .hero::before{background-image:none;}
  .tag{font-size:12px;}
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .price-card:hover,.support__item:hover,.hero__visual:hover img{transform:none;}
}