/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --brand-700:#0A5748;
  --brand-600:#0E6E5C;
  --brand-500:#158A72;
  --brand-100:#DDEEE8;
  --brand-50:#EEF6F3;
  --accent-600:#D8451F;
  --accent-500:#F0562D;
  --accent-100:#FFE7DE;
  --ink-900:#14181A;
  --ink-700:#333B39;
  --ink-600:#4A5450;
  --ink-400:#8A948F;
  --line:#E4E7E3;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-dark:#101413;
  --success:#2E9E6B;
  --warn:#E8A33D;
  --danger:#D6453D;
  --radius-badge:999px;
  --radius-btn:12px;
  --radius-card:14px;
  --radius-phone:28px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.04);
  --shadow-md:0 6px 18px rgba(20,24,26,.06);
  --shadow-lg:0 14px 36px rgba(20,24,26,.10);
  --nav-w:96px;
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.22;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{border:0;background:none;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-500);
  outline-offset:2px;
  border-radius:6px;
}
.num{font-variant-numeric:tabular-nums;}

/* ===== 容器 ===== */
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ===== 板块标题 ===== */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.sec-head__left{max-width:680px;}
.sec-head h2{position:relative;padding-left:14px;}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:20px;
  border-radius:2px;
  background:var(--brand-600);
}
.sec-head__desc{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
}
.sec-more{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-600);
  text-decoration:underline;
  text-underline-offset:3px;
  transition:color .18s ease-out;
}
.sec-more:hover{color:var(--brand-700);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,filter .18s ease-out;
}
.btn--primary{
  background:var(--accent-500);
  color:#fff;
  box-shadow:0 6px 18px rgba(240,86,45,.22);
}
.btn--primary:hover{background:var(--accent-600);transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);filter:brightness(.96);}
.btn--ghost{
  background:#fff;
  border:1px solid var(--line);
  color:var(--ink-900);
}
.btn--ghost:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn--ghost:active{transform:translateY(0);}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn--lg{height:52px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-badge);
  font-size:12.5px;
  line-height:1;
  font-weight:600;
  white-space:nowrap;
}
.badge--brand{background:var(--brand-50);color:var(--brand-700);}
.badge--hot{background:var(--accent-100);color:var(--accent-600);}
.badge--dark{background:rgba(16,20,19,.62);color:#fff;}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-badge);
  background:var(--brand-50);
  color:var(--brand-700);
  font-size:12.5px;
  font-weight:600;
}

/* ===== 卡片通用 ===== */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.card:hover{
  border-color:var(--brand-100);
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
}

/* ===== 左侧竖向导航 ===== */
.sidenav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--nav-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:22px 0 18px;
  z-index:80;
}
.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:6px 4px;
  border-radius:12px;
  transition:background-color .18s ease-out;
}
.brand:hover{background:var(--brand-50);}
.brand__mark{
  font-size:21px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--brand-600);
  line-height:1.1;
}
.brand__text{
  font-size:11px;
  letter-spacing:.04em;
  color:var(--ink-700);
  text-align:center;
  line-height:1.3;
}
.sidenav__nav{
  width:100%;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:26px 10px 0;
}
.sidenav__item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  padding:12px 4px;
  border-radius:12px;
  font-size:12px;
  line-height:1.35;
  text-align:center;
  color:var(--ink-600);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.sidenav__item svg{
  width:24px;height:24px;
  stroke:var(--ink-400);
  fill:none;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:stroke .18s ease-out;
}
.sidenav__item:hover{background:var(--brand-50);color:var(--brand-700);}
.sidenav__item:hover svg{stroke:var(--brand-600);}
.sidenav__item.is-active{
  background:var(--brand-50);
  color:var(--brand-700);
  font-weight:600;
}
.sidenav__item.is-active svg{stroke:var(--brand-600);}
.sidenav__item.is-active::before{
  content:"";
  position:absolute;
  left:-10px;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-600);
}
.sidenav__buy{
  margin-top:auto;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--accent-500);
  display:grid;
  place-items:center;
  box-shadow:0 6px 18px rgba(240,86,45,.26);
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.sidenav__buy svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.sidenav__buy:hover{background:var(--accent-600);transform:translateY(-1px);}

/* ===== 移动端顶部栏 ===== */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 12px;
  z-index:90;
}
.topbar__toggle{
  width:44px;height:44px;
  display:grid;
  place-items:center;
  border-radius:10px;
}
.topbar__toggle svg{width:22px;height:22px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round;}
.topbar__toggle:hover{background:var(--brand-50);}
.topbar__brand{
  font-size:16px;
  font-weight:700;
  color:var(--brand-600);
  letter-spacing:-.01em;
}
.topbar__cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:36px;
  padding:0 14px;
  border-radius:10px;
  background:var(--accent-500);
  color:#fff;
  font-size:14px;
  font-weight:600;
}
.topbar__cta:hover{background:var(--accent-600);}

/* ===== 移动端抽屉 ===== */
.drawer{
  position:fixed;
  inset:0;
  background:#fff;
  z-index:100;
  display:flex;
  flex-direction:column;
  transform:translateX(-100%);
  transition:transform .24s ease-out;
  visibility:hidden;
}
body.nav-open .drawer{transform:translateX(0);visibility:visible;}
.drawer__head{
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 12px;
  border-bottom:1px solid var(--line);
}
.drawer__brand{font-size:16px;font-weight:700;color:var(--brand-600);}
.drawer__close{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:10px;
}
.drawer__close svg{width:20px;height:20px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round;}
.drawer__list{flex:1;overflow-y:auto;padding:8px 0;}
.drawer__link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  padding:0 20px;
  font-size:16px;
  color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer__link.is-active{color:var(--brand-700);font-weight:600;background:var(--brand-50);}
.drawer__link span.arrow{color:var(--ink-400);font-size:18px;}
.drawer__foot{padding:16px 20px 24px;border-top:1px solid var(--line);}

/* ===== 页面主体 ===== */
.page{margin-left:var(--nav-w);}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 88px;
  background:linear-gradient(180deg,#ffffff 0%,var(--bg) 100%);
}
.hero__bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.09;
  pointer-events:none;
}
.hero__inner{
  position:relative;
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:56px;
  align-items:center;
}
.hero__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:var(--radius-badge);
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  color:var(--brand-700);
  font-size:12.5px;
  font-weight:600;
  margin-bottom:20px;
}
.hero__eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);
  display:inline-block;
}
.hero h1{max-width:15em;}
.hero__sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-600);
  max-width:30em;
}
.hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.hero__stats{
  display:flex;
  gap:28px;
  margin-top:40px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.stat{
  position:relative;
  padding-right:28px;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.stat:not(:last-child)::after{
  content:"";
  position:absolute;
  right:0;top:6px;bottom:6px;
  width:1px;
  background:var(--line);
}
.stat__num{
  font-size:24px;
  font-weight:700;
  color:var(--ink-900);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat__label{font-size:13px;color:var(--ink-400);}

/* Hero 手机框 */
.hero__visual{
  position:relative;
  display:flex;
  justify-content:center;
}
.phone{
  position:relative;
  width:320px;
  max-width:78vw;
  aspect-ratio:9/16;
  border-radius:var(--radius-phone);
  border:1px solid var(--line);
  background:var(--brand-50);
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.phone img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.phone__progress{
  position:absolute;
  top:0;left:0;right:0;
  height:5px;
  background:rgba(255,255,255,.35);
}
.phone__progress span{
  display:block;
  height:100%;
  width:38%;
  background:var(--accent-500);
}
.phone__time{
  position:absolute;
  left:12px;bottom:12px;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 9px;
  border-radius:6px;
  background:rgba(16,20,19,.66);
  color:#fff;
  font-size:12.5px;
  font-variant-numeric:tabular-nums;
}
.phone__play{
  position:absolute;
  right:12px;bottom:12px;
  width:38px;height:38px;
  border-radius:50%;
  background:rgba(255,255,255,.94);
  display:grid;
  place-items:center;
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out;
}
.phone:hover .phone__play{transform:scale(1.08);}
.phone__play svg{width:16px;height:16px;fill:var(--brand-700);stroke:none;}
.phone-bubble{
  position:absolute;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-md);
  padding:10px 12px;
  max-width:200px;
  font-size:13px;
  line-height:1.6;
  color:var(--ink-700);
}
.phone-bubble strong{
  display:block;
  font-size:12.5px;
  color:var(--ink-900);
  margin-bottom:2px;
}
.phone-bubble--a{top:12%;left:-14px;}
.phone-bubble--b{bottom:16%;right:-14px;}

/* ===== 爆款片段卡 ===== */
.snap-wrap{position:relative;}
.snap-strip{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding:4px 24px 14px;
  margin:0 -24px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.snap-strip::-webkit-scrollbar{display:none;}
.snap-card{
  position:relative;
  flex:0 0 200px;
  aspect-ratio:9/16;
  border-radius:18px;
  overflow:hidden;
  background:var(--brand-50);
  border:1px solid var(--line);
  scroll-snap-align:start;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.snap-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.snap-card img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.snap-card__mask{
  position:absolute;
  left:0;right:0;bottom:0;
  height:58%;
  background:linear-gradient(to top,rgba(16,20,19,.88),rgba(16,20,19,0));
  transition:opacity .18s ease-out;
}
.snap-card:hover .snap-card__mask{opacity:.94;}
.snap-card__badge{
  position:absolute;
  top:10px;left:10px;
}
.snap-card__body{
  position:absolute;
  left:12px;right:12px;bottom:12px;
  color:#fff;
}
.snap-card__title{
  font-size:14px;
  font-weight:600;
  line-height:1.45;
  color:#fff;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:8px;
}
.snap-card__foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.snap-card__time{
  font-size:12.5px;
  color:rgba(255,255,255,.86);
  font-variant-numeric:tabular-nums;
}
.snap-card__play{
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(255,255,255,.9);
  display:grid;
  place-items:center;
  transition:transform .18s ease-out;
}
.snap-card:hover .snap-card__play{transform:scale(1.08);}
.snap-card__play svg{width:11px;height:11px;fill:var(--brand-700);}

/* ===== 种草清单（非对称网格） ===== */
.picks{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.pick{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.pick:hover{
  border-color:var(--brand-100);
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
}
.pick--lead{grid-column:span 3;grid-row:span 2;}
.pick--half{grid-column:span 3;}
.pick--third{grid-column:span 2;}
.pick__media{
  position:relative;
  background:var(--brand-50);
  overflow:hidden;
}
.pick--lead .pick__media{aspect-ratio:16/10;}
.pick--half .pick__media{aspect-ratio:3/2;}
.pick--third .pick__media{aspect-ratio:4/5;}
.pick__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.pick:hover .pick__media img{transform:scale(1.03);}
.pick__media .badge{
  position:absolute;
  top:12px;left:12px;
  background:rgba(255,255,255,.94);
  color:var(--brand-700);
}
.pick__body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.pick--lead .pick__body{padding:22px 24px 24px;}
.pick__title{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink-900);
}
.pick--lead .pick__title{font-size:20px;}
.pick__desc{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.pick__tags{display:flex;flex-wrap:wrap;gap:8px;}
.pick__foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:8px;
}
.pick__save{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--ink-400);
  font-variant-numeric:tabular-nums;
}
.pick__save svg{width:15px;height:15px;stroke:var(--ink-400);fill:none;stroke-width:1.8;}

/* ===== 最新信息（CMS 列表） ===== */
.news-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 40px;
}
.news-row{
  display:flex;
  align-items:center;
  gap:20px;
  padding:20px 14px;
  border-bottom:1px solid var(--line);
  border-radius:10px;
  transition:background-color .18s ease-out;
}
.news-row:hover{background:var(--brand-50);}
.news-row__main{flex:1;min-width:0;}
.news-row__head{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:8px;
}
.news-row__title{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink-900);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .18s ease-out;
}
.news-row:hover .news-row__title{color:var(--brand-600);}
.news-row__desc{
  margin-top:6px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-row__meta{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-400);
  font-variant-numeric:tabular-nums;
}
.news-row__arrow{
  font-size:18px;
  color:var(--ink-400);
  transition:transform .18s ease-out,color .18s ease-out;
}
.news-row:hover .news-row__arrow{transform:translateX(2px);color:var(--brand-600);}

/* 空态 */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:40px 24px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
}
.empty-state svg{width:48px;height:48px;stroke:var(--ink-400);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:15px;color:var(--ink-400);}

/* ===== 口碑条 ===== */
.voices{position:relative;}
.voice-strip{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding:4px 24px 16px;
  margin:0 -24px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.voice-strip::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 320px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.voice-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-md);transform:translateY(-2px);}
.voice-card__head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.avatar{
  width:40px;height:40px;
  border-radius:50%;
  background:var(--brand-100);
  color:var(--brand-700);
  display:grid;
  place-items:center;
  font-size:15px;
  font-weight:700;
  flex:0 0 auto;
}
.voice-card__name{font-size:14px;font-weight:600;color:var(--ink-900);line-height:1.3;}
.voice-card__stars{display:flex;gap:2px;margin-top:3px;}
.voice-card__stars svg{width:13px;height:13px;fill:var(--accent-500);}
.voice-card__text{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.voice-card__time{
  margin-top:12px;
  font-size:12.5px;
  color:var(--ink-400);
  font-variant-numeric:tabular-nums;
}

/* ===== FAQ ===== */
.faq{max-width:900px;margin:0 auto;}
.faq__item{border-bottom:1px solid var(--line);}
.faq__item:first-child{border-top:1px solid var(--line);}
.faq__q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .18s ease-out;
}
.faq__q::-webkit-details-marker{display:none;}
.faq__q:hover{color:var(--brand-600);}
.faq__icon{
  flex:0 0 auto;
  width:24px;height:24px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:16px;
  line-height:1;
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq__item[open] .faq__icon{transform:rotate(45deg);background:var(--accent-100);color:var(--accent-600);}
.faq__a{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
  padding:0 4px 20px;
}

/* ===== CTA 深色贴片 ===== */
.cta-dark{
  background:var(--surface-dark);
  border-radius:20px;
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-dark h2{color:#fff;}
.cta-dark__sub{
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.7);
  max-width:34em;
}
.cta-dark__points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  margin-top:22px;
}
.cta-dark__point{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.86);
}
.cta-dark__point svg{width:16px;height:16px;stroke:var(--accent-500);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.cta-dark__action{flex:0 0 auto;}

/* ===== 页脚 ===== */
.footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:64px 0 24px;
}
.footer__grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
}
.footer__brand-mark{
  font-size:19px;
  font-weight:800;
  color:var(--brand-600);
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.footer__desc{
  font-size:14px;
  line-height:1.85;
  color:var(--ink-600);
  max-width:26em;
}
.footer__social{
  display:flex;
  gap:10px;
  margin-top:18px;
}
.footer__social a{
  width:36px;height:36px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  display:grid;
  place-items:center;
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.footer__social a:hover{border-color:var(--brand-500);transform:translateY(-1px);}
.footer__social svg{width:17px;height:17px;stroke:var(--ink-600);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.footer h4{
  font-size:14px;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
  letter-spacing:.01em;
}
.footer__links li{margin-bottom:10px;}
.footer__links a{
  font-size:14px;
  color:var(--ink-600);
  transition:color .18s ease-out;
}
.footer__links a:hover{
  color:var(--brand-600);
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer__form{
  display:flex;
  gap:10px;
  margin-top:6px;
}
.footer__form input{
  flex:1;
  min-width:0;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:#fff;
  font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.footer__form input::placeholder{color:var(--ink-400);}
.footer__form input:focus{
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(21,138,114,.16);
  outline:none;
}
.footer__form-tip{
  margin-top:10px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--ink-400);
}
.footer__bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--ink-400);
}
.footer__bottom a{color:var(--ink-400);}
.footer__bottom a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}

/* ===== 进入动画 ===== */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  :root{--nav-w:88px;}
  .sidenav__item{font-size:11px;}
  .hero__inner{gap:40px;}
}
@media (max-width:1023px){
  .sidenav{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-top:56px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .hero{padding:56px 0 64px;}
  .hero__inner{grid-template-columns:1fr;gap:44px;}
  .hero__visual{order:2;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-dark{flex-direction:column;align-items:flex-start;gap:28px;padding:40px;}
  .news-list{grid-template-columns:1fr;gap:0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .snap-strip{padding:4px 16px 14px;margin:0 -16px;}
  .voice-strip{padding:4px 16px 16px;margin:0 -16px;}
  .snap-card{flex:0 0 76vw;max-width:260px;}
  .voice-card{flex:0 0 84vw;max-width:320px;}
  .picks{grid-template-columns:1fr;gap:16px;}
  .pick--lead,.pick--half,.pick--third{grid-column:span 1;grid-row:auto;}
  .pick--lead .pick__media,.pick--half .pick__media,.pick--third .pick__media{aspect-ratio:4/5;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .hero__stats{gap:18px;}
  .stat{padding-right:18px;}
  .phone-bubble{display:none;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__form{flex-direction:column;}
  .cta-dark{padding:28px;border-radius:18px;}
  .cta-dark__action{width:100%;}
  .cta-dark__action .btn{width:100%;}
}
@media (max-width:520px){
  .hero h1{font-size:29px;}
  .hero__sub{font-size:16px;}
  .hero__actions{gap:10px;}
  .hero__actions .btn{width:100%;}
  .stat__num{font-size:20px;}
  .news-row{padding:16px 8px;gap:12px;}
  .news-row__meta{flex-direction:column;align-items:flex-end;gap:4px;}
}

/* roulang page: article */
:root{
  --brand-700:#0A5748;
  --brand-600:#0E6E5C;
  --brand-500:#158A72;
  --brand-100:#DDEEE8;
  --brand-50:#EEF6F3;
  --accent-600:#D8451F;
  --accent-500:#F0562D;
  --accent-100:#FFE7DE;
  --ink-900:#14181A;
  --ink-700:#333B39;
  --ink-600:#4A5450;
  --ink-400:#8A948F;
  --line:#E4E7E3;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-dark:#101413;
  --success:#2E9E6B;
  --warn:#E8A33D;
  --danger:#D6453D;
  --radius-sm:10px;
  --radius:12px;
  --radius-card:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.04);
  --shadow-md:0 6px 18px rgba(20,24,26,.06);
  --shadow-lg:0 14px 36px rgba(20,24,26,.10);
  --nav-w:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-600)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(21,138,114,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 8px;gap:22px;z-index:60;
}
.brand{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}
.brand__mark{
  width:44px;height:44px;border-radius:14px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:16px;letter-spacing:-.02em;
  box-shadow:var(--shadow-sm);
}
.brand__text{font-size:12.5px;color:var(--ink-700);letter-spacing:.06em;line-height:1.4}
.sidenav__nav{display:flex;flex-direction:column;gap:6px;width:100%}
.sidenav__item{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:10px 4px;border-radius:var(--radius);color:var(--ink-600);
  font-size:12.5px;line-height:1.35;text-align:center;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.sidenav__item svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sidenav__item:hover{background:var(--brand-50);color:var(--brand-600)}
.sidenav__item.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600}
.sidenav__item.is-active::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--brand-600);
}
.sidenav__buy{
  margin-top:auto;width:44px;height:44px;border-radius:50%;
  background:var(--accent-500);color:#fff;display:grid;place-items:center;
  box-shadow:var(--shadow-md);
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.sidenav__buy svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sidenav__buy:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{display:none}
.drawer{position:fixed;inset:0;background:#fff;z-index:90;flex-direction:column;padding:16px 18px 20px;overflow-y:auto}
.drawer[hidden]{display:none}
.drawer__head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer__head strong{font-size:15px;color:var(--ink-900)}
.drawer__close{
  margin-left:auto;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:#fff;font-size:20px;line-height:1;display:grid;place-items:center;cursor:pointer;
}
.drawer__nav{display:flex;flex-direction:column;padding-top:8px}
.drawer__item{
  display:flex;align-items:center;height:52px;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:500;color:var(--ink-700);
}
.drawer__item.is-active{color:var(--brand-600);font-weight:600}
.drawer__foot{margin-top:auto;padding-top:20px}
.drawer__foot .btn{width:100%}

/* ---------- 主区域 ---------- */
.page{margin-left:var(--nav-w);padding-bottom:0}
main.page{display:block}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:32px 0 20px;font-size:13px;color:var(--ink-400)}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb li+li::before{content:"/";color:#C9CFCA}
.crumb a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.crumb [aria-current]{color:var(--ink-400)}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.article-main{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  padding:34px 38px 38px;box-shadow:var(--shadow-sm);min-width:0;
}
.kicker{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.article-head h1{margin:16px 0 0;font-size:clamp(26px,3.4vw,38px);line-height:1.28}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;margin-top:16px;font-size:13px;color:var(--ink-400)}
.article-meta span+span::before{content:"·";margin:0 10px;color:#C9CFCA}
.article-cover{margin:26px 0 0;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--brand-50)}
.article-cover img{width:100%;aspect-ratio:16/9;max-height:420px;object-fit:cover}

/* ---------- 正文阅读区 ---------- */
.article-body{max-width:760px;margin-top:34px;font-size:16px;line-height:1.9;color:var(--ink-600)}
.article-body p{margin:0 0 1.1em}
.article-body strong{color:var(--ink-900)}
.article-body h2{
  position:relative;margin:1.6em 0 .6em;padding-left:14px;
  font-size:clamp(20px,2.4vw,24px);line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:3px;height:1.05em;
  border-radius:3px;background:var(--brand-600);
}
.article-body h3{margin:1.5em 0 .5em;font-size:19px;line-height:1.5}
.article-body h4{margin:1.3em 0 .4em;font-size:16.5px;line-height:1.6}
.article-body img{border-radius:12px;margin:1.4em auto;height:auto}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;list-style:revert}
.article-body li{margin:.35em 0;line-height:1.85}
.article-body li::marker{color:var(--brand-600)}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--brand-50);
  border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{background:#F1F2EF;border-radius:6px;padding:2px 6px;font-size:.875em}
.article-body pre{background:#F1F2EF;border-radius:12px;padding:16px;overflow:auto;font-size:13.5px;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;font-size:13.5px;margin:1.4em 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:34px;padding:48px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
}
.empty-state svg{width:48px;height:48px;margin:0 auto 14px;fill:none;stroke:var(--ink-400);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{font-size:15px;color:var(--ink-400)}
.empty-state .btn{margin-top:18px}

/* ---------- 标签与分享 ---------- */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:500}
.tag--hot{background:var(--accent-100);color:var(--accent-600)}
.article-share{
  display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:20px;
  border-top:1px solid var(--line);font-size:13px;color:var(--ink-400);
}
.share-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.share-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.share-btn:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}

/* ---------- 上一篇 / 下一篇 ---------- */
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.article-nav a{
  display:flex;align-items:center;gap:12px;padding:16px 18px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
  font-size:14px;font-weight:600;color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,color .18s ease-out;
}
.article-nav a:hover{border-color:var(--brand-100);box-shadow:var(--shadow-md);transform:translateY(-2px);color:var(--brand-600)}
.article-nav .dir{font-size:12.5px;color:var(--ink-400);font-weight:500}

/* ---------- 板块标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-head h2{font-size:clamp(20px,2.4vw,24px);line-height:1.35}
.section-head .more{font-size:13.5px;color:var(--brand-600);white-space:nowrap}
.section-head .more:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 相关推荐（行式卡） ---------- */
.related{margin-top:52px}
.related-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden}
.related-item{display:flex;align-items:center;gap:14px;padding:16px 18px;min-height:72px;border-top:1px solid var(--line)}
.related-item:first-child{border-top:0}
.related-item:hover{background:var(--brand-50)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--brand-50);color:var(--brand-700);white-space:nowrap}
.badge--hot{background:var(--accent-100);color:var(--accent-600)}
.related-item h3{font-size:15.5px;font-weight:600;line-height:1.5;margin-top:4px}
.related-item .arrow{margin-left:auto;color:var(--ink-400);flex:none;transition:transform .18s ease-out,color .18s ease-out}
.related-item:hover .arrow{transform:translateX(2px);color:var(--brand-600)}
.related-item .arrow svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:20px}
.aside-card h3{font-size:15px;line-height:1.5;margin-bottom:12px}
.toc-list a{display:block;padding:9px 10px;border-radius:10px;font-size:13.5px;line-height:1.55;color:var(--ink-600)}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-600)}
.pick{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--brand-50)}
.pick img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease-out}
.pick:hover img{transform:scale(1.04)}
.pick-title{margin-top:10px;font-size:14px;font-weight:600;color:var(--ink-900);line-height:1.5}
.pick:hover .pick-title{color:var(--brand-600)}
.aside-links li+li{margin-top:4px}
.aside-links a{display:block;padding:9px 10px;border-radius:10px;font-size:13.5px;color:var(--ink-600);line-height:1.5}
.aside-links a:hover{background:var(--brand-50);color:var(--brand-600)}

/* ---------- FAQ ---------- */
.faq-section{margin-top:56px;max-width:860px}
.faq__item{border-top:1px solid var(--line)}
.faq__item:last-child{border-bottom:1px solid var(--line)}
.faq__item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--ink-900);
  cursor:pointer;list-style:none;transition:color .18s ease-out;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"";flex:none;width:12px;height:12px;margin-top:-5px;
  border-right:1.6px solid var(--brand-600);border-bottom:1.6px solid var(--brand-600);
  transform:rotate(45deg);transition:transform .2s ease-out;
}
.faq__item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq__item summary:hover{color:var(--brand-600)}
.faq__body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-600);max-width:680px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius);border:1px solid transparent;
  font-weight:600;font-size:15px;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn--primary{background:var(--accent-500);color:#fff}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0);filter:brightness(.96)}
.btn--primary:focus-visible{outline:3px solid rgba(240,86,45,.28)}
.btn--outline{background:#fff;border-color:var(--line);color:var(--ink-900)}
.btn--outline:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--brand-600);padding:0 8px}
.btn--lg{height:52px;padding:0 26px}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}

/* ---------- 深色跟买贴片 ---------- */
.cta-wrap{padding:72px 0 0}
.cta-dark{
  background:var(--surface-dark);border-radius:var(--radius-lg);
  padding:48px;color:#C6CFCB;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
}
.cta-dark h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.35;letter-spacing:-.01em}
.cta-dark .cta-sub{margin-top:12px;font-size:15px;line-height:1.8;color:#9FA9A5;max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:20px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:#D5DBD8}
.cta-points svg{width:16px;height:16px;flex:none;fill:none;stroke:var(--accent-500);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer__brand-mark{font-size:16px;font-weight:700;color:var(--ink-900)}
.footer__desc{margin-top:12px;font-size:13.5px;line-height:1.8;color:var(--ink-400);max-width:320px}
.footer__social{display:flex;gap:10px;margin-top:18px}
.footer__social a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-600);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.footer__social a:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}
.footer__social svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.footer h4{font-size:14px;margin-bottom:14px;color:var(--ink-900)}
.footer__links li+li{margin-top:10px}
.footer__links a{font-size:13.5px;color:var(--ink-600)}
.footer__links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.footer__form{display:flex;gap:10px}
.footer__form input{
  flex:1;min-width:0;height:48px;padding:0 14px;border-radius:12px;
  border:1px solid var(--line);background:#fff;font-size:14px;
}
.footer__form input::placeholder{color:var(--ink-400)}
.footer__form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(21,138,114,.16)}
.footer__form .btn{flex:none;padding:0 18px}
.footer__form-tip{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--ink-400)}
.footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink-400);
}

/* ---------- 滚动进入动画 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .2s ease-out,transform .2s ease-out}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:88px}
  .sidenav__item{font-size:11.5px}
}
@media (max-width:1023px){
  .sidenav{display:none}
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
    align-items:center;gap:12px;padding:0 14px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .topbar__burger{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
    display:grid;place-items:center;cursor:pointer;flex:none;
  }
  .topbar__burger svg{width:20px;height:20px;fill:none;stroke:var(--ink-900);stroke-width:1.8;stroke-linecap:round}
  .topbar__brand{display:flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;color:var(--ink-900)}
  .topbar__mark{
    width:28px;height:28px;border-radius:9px;background:var(--brand-600);color:#fff;
    display:grid;place-items:center;font-size:12px;font-weight:700;
  }
  .topbar__buy{margin-left:auto}
  .page{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{display:none}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-dark{padding:36px;grid-template-columns:minmax(0,1fr);gap:24px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .crumb{padding:22px 0 16px}
  .article-main{padding:22px 16px 26px;border-radius:14px}
  .article-nav{grid-template-columns:1fr}
  .article-nav .dir{align-items:flex-start}
  .article-meta span+span::before{margin:0 8px}
  .faq-section{margin-top:40px}
  .cta-wrap{padding:48px 0 0}
  .cta-dark{padding:26px 20px;border-radius:16px}
  .cta-dark .btn--primary{width:100%}
  .footer{padding:48px 0 24px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__form{flex-direction:column}
  .footer__form .btn{width:100%}
  .footer__desc{max-width:none}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .related-item{align-items:flex-start}
}
@media (max-width:480px){
  .article-head h1{font-size:24px}
  .article-cover{margin-top:20px;border-radius:12px}
  .article-body{margin-top:26px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand-700:#0A5748;
  --brand-600:#0E6E5C;
  --brand-500:#158A72;
  --brand-100:#DDEEE8;
  --brand-50:#EEF6F3;
  --accent-600:#D8451F;
  --accent-500:#F0562D;
  --accent-100:#FFE7DE;
  --ink-900:#14181A;
  --ink-700:#333B39;
  --ink-600:#4A5450;
  --ink-400:#8A948F;
  --line:#E4E7E3;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-dark:#101413;
  --success:#2E9E6B;
  --warn:#E8A33D;
  --danger:#D6453D;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:14px;
  --r-xl:20px;
  --sh-sm:0 1px 2px rgba(20,24,26,.04);
  --sh-md:0 6px 18px rgba(20,24,26,.06);
  --sh-lg:0 14px 36px rgba(20,24,26,.10);
  --nav-w:96px;
  --sp-section:88px;
  --maxw:1180px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;border:0;}
svg{display:block;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{border:0;background:none;cursor:pointer;}
:focus-visible{outline:3px solid rgba(240,86,45,.28);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 容器与页面主区 ============ */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.page{margin-left:var(--nav-w);}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:56px 0;}
.section--soft{background:var(--brand-50);}
.section--white{background:var(--surface);}

.sec-head{max-width:760px;margin-bottom:36px;}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;position:relative;padding-left:14px;}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:20px;border-radius:2px;background:var(--brand-600);
}
.sec-head p{margin-top:14px;font-size:16.5px;line-height:1.85;color:var(--ink-600);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--lg{height:52px;padding:0 30px;font-size:16px;}
.btn--primary{background:var(--accent-500);color:#fff;}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);filter:brightness(.96);}
.btn--ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900);}
.btn--ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(0);}
.btn--plain{background:transparent;color:var(--brand-600);padding:0 8px;height:auto;}
.btn--plain:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}

/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;line-height:1;font-weight:600;white-space:nowrap;
}
.tag--brand{background:var(--brand-50);color:var(--brand-700);}
.tag--accent{background:var(--accent-100);color:var(--accent-600);}
.tag--line{background:var(--surface);border:1px solid var(--line);color:var(--ink-600);font-weight:500;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);font-size:12.5px;font-weight:600;letter-spacing:.01em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 0 16px;z-index:60;
}
.brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none;color:var(--ink-900);}
.brand__mark{
  width:44px;height:44px;border-radius:14px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;letter-spacing:-.02em;
}
.brand__text{writing-mode:vertical-rl;font-size:12.5px;letter-spacing:.14em;color:var(--ink-600);line-height:1;}
.brand:hover .brand__text{color:var(--brand-600);}
.sidenav__nav{
  display:flex;flex-direction:column;gap:4px;width:100%;
  padding:20px 10px;flex:1 1 auto;overflow-y:auto;
}
.sidenav__item{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:10px 4px;border-radius:var(--r-md);
  color:var(--ink-600);font-size:12.5px;line-height:1.35;text-align:center;text-decoration:none;
  transition:background .18s ease-out,color .18s ease-out;
}
.sidenav__item svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:stroke .18s ease-out;}
.sidenav__item:hover{background:var(--brand-50);color:var(--brand-600);}
.sidenav__item.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.sidenav__item.is-active::before{
  content:"";position:absolute;left:-10px;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand-600);
}
.sidenav__buy{
  width:44px;height:44px;border-radius:50%;background:var(--accent-500);color:#fff;
  display:grid;place-items:center;flex:0 0 auto;
  transition:background .18s ease-out,transform .18s ease-out;
}
.sidenav__buy svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.sidenav__buy:hover{background:var(--accent-600);transform:translateY(-1px);}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__toggle{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-md);color:var(--ink-900);
  transition:background .18s ease-out;
}
.topbar__toggle:hover{background:var(--brand-50);}
.topbar__toggle svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;}
.topbar__brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink-900);text-decoration:none;flex:1 1 auto;}
.topbar__brand .brand__mark{width:32px;height:32px;border-radius:10px;font-size:13px;}
.topbar__buy{
  width:44px;height:44px;border-radius:50%;background:var(--accent-500);color:#fff;display:grid;place-items:center;
}
.topbar__buy svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--surface);
  transform:translateX(-100%);transition:transform .26s ease-out;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.drawer__title{font-size:15px;font-weight:600;color:var(--ink-900);}
.drawer__close{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-md);color:var(--ink-700);}
.drawer__close svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.drawer__nav{flex:1 1 auto;overflow-y:auto;padding:8px 0;}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:12px 20px;color:var(--ink-900);font-size:16px;
  border-bottom:1px solid var(--line);text-decoration:none;
}
.drawer__link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer__link.is-active{color:var(--brand-700);font-weight:600;background:var(--brand-50);}
.drawer__link svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;flex:0 0 auto;}
.drawer__foot{padding:16px 20px 24px;border-top:1px solid var(--line);flex:0 0 auto;}
.drawer__foot .btn{width:100%;}

/* ============ 矮版 Hero ============ */
.hero{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:56px 0 52px;
  position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(21,138,114,.10),rgba(21,138,114,0) 70%);
  pointer-events:none;
}
.hero__grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:48px;align-items:center;position:relative;z-index:1;
}
.hero h1{font-size:clamp(28px,3.6vw,42px);line-height:1.24;margin-top:18px;}
.hero__lead{margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--ink-600);max-width:640px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero__side{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:16px;box-shadow:var(--sh-sm);
}
.hero__side img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;background:var(--brand-50);}
.hero__side-note{margin-top:14px;font-size:13.5px;line-height:1.7;color:var(--ink-400);}
.breadcrumb{margin-bottom:20px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb [aria-current]{color:var(--ink-400);}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;margin-top:8px;
}
.stats__item{padding:24px 20px;border-right:1px solid var(--line);}
.stats__item:last-child{border-right:0;}
.stats__num{display:block;font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.2;letter-spacing:-.01em;}
.stats__label{display:block;margin-top:6px;font-size:13px;color:var(--ink-400);line-height:1.6;}

/* ============ 左文右图交替 ============ */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.zig+.zig{margin-top:72px;}
.zig__text h3{font-size:22px;line-height:1.45;}
.zig__text p{margin-top:14px;font-size:16px;line-height:1.9;}
.zig__list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.zig__list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--ink-700);}
.zig__list svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;fill:none;stroke:var(--brand-500);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.zig__media{position:relative;}
.zig__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--brand-50);box-shadow:var(--sh-md);
}
.zig__media figcaption{
  margin-top:12px;font-size:13px;color:var(--ink-400);line-height:1.7;
}
.zig--rev .zig__text{order:2;}
.zig--rev .zig__media{order:1;}

/* ============ 清单表格式列表 ============ */
.clist{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.clist__head{
  display:grid;grid-template-columns:64px 132px minmax(0,1fr) 40px;
  gap:20px;padding:14px 24px;background:var(--brand-50);
  font-size:12.5px;font-weight:600;color:var(--brand-700);letter-spacing:.02em;
}
.clist__row{
  display:grid;grid-template-columns:64px 132px minmax(0,1fr) 40px;
  gap:20px;align-items:center;padding:20px 24px;
  border-top:1px solid var(--line);
  transition:background .18s ease-out;
}
.clist__row:hover{background:var(--brand-50);}
.clist__num{font-size:15px;font-weight:700;color:var(--accent-500);letter-spacing:.02em;}
.clist__title{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.55;}
.clist__desc{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-400);}
.clist__row:hover .clist__title{color:var(--brand-600);}
.clist__arrow{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  transition:transform .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.clist__row:hover .clist__arrow{transform:translateX(2px);border-color:var(--brand-500);color:var(--brand-600);}
.clist__arrow svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 横向滚动片段条 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 24px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail__card{
  flex:0 0 auto;width:212px;scroll-snap-align:start;text-decoration:none;color:inherit;
}
.rail__thumb{
  position:relative;aspect-ratio:4/5;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);background:var(--brand-50);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rail__thumb img{width:100%;height:100%;object-fit:cover;}
.rail__thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(16,20,19,.72),rgba(16,20,19,0) 52%);
  opacity:.9;transition:opacity .18s ease-out;
}
.rail__card:hover .rail__thumb{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--brand-100);}
.rail__card:hover .rail__thumb::after{opacity:1;}
.rail__badge{position:absolute;left:10px;top:10px;z-index:2;}
.rail__meta{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:2;color:#fff;
}
.rail__meta strong{display:block;font-size:14.5px;font-weight:600;line-height:1.5;}
.rail__meta span{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.78);}
.rail__nav{
  position:absolute;right:24px;top:-58px;display:flex;gap:8px;
}
.rail__nav button{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--ink-700);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.rail__nav button:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.rail__nav svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 信任点 ============ */
.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.trust__item{display:flex;gap:14px;align-items:flex-start;}
.trust__icon{
  width:44px;height:44px;border-radius:var(--r-md);background:var(--brand-50);
  display:grid;place-items:center;flex:0 0 auto;
}
.trust__icon svg{width:22px;height:22px;fill:none;stroke:var(--brand-600);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.trust__item h3{font-size:16.5px;line-height:1.5;}
.trust__item p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--ink-400);}

/* ============ FAQ ============ */
.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);overflow:hidden;}
.faq details{border-top:1px solid var(--line);}
.faq details:first-child{border-top:0;}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:color .18s ease-out,background .18s ease-out;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand-600);background:var(--brand-50);}
.faq summary .faq__sign{
  position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform .18s ease-out;
}
.faq summary .faq__sign::before,
.faq summary .faq__sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
}
.faq summary .faq__sign::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq summary .faq__sign::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq details[open] summary .faq__sign{transform:rotate(45deg);}
.faq__answer{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ============ 深色 CTA ============ */
.cta{padding:var(--sp-section) 0 0;}
.cta__box{
  background:var(--surface-dark);border-radius:var(--r-xl);
  padding:48px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:40px;align-items:center;
}
.cta__box h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta__box p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:620px;}
.cta__points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:22px;}
.cta__points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:rgba(255,255,255,.86);}
.cta__points svg{width:17px;height:17px;flex:0 0 auto;fill:none;stroke:var(--accent-500);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}
.cta__action{display:flex;flex-direction:column;gap:12px;align-items:stretch;}

/* ============ 页脚 ============ */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:56px;}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer__brand-mark{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.footer__desc{margin-top:14px;font-size:14px;line-height:1.85;color:var(--ink-400);max-width:320px;}
.footer__social{display:flex;gap:10px;margin-top:18px;}
.footer__social a{
  width:38px;height:38px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--ink-600);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.footer__social a:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.footer__social svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.footer h4{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:16px;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{font-size:14px;color:var(--ink-600);}
.footer__links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.footer__form{display:flex;gap:10px;}
.footer__form input{
  flex:1 1 auto;min-width:0;height:48px;padding:0 14px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--surface);font-size:14px;color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.footer__form input::placeholder{color:var(--ink-400);}
.footer__form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(21,138,114,.16);}
.footer__form .btn{flex:0 0 auto;padding:0 20px;}
.footer__form-tip{margin-top:12px;font-size:13px;line-height:1.75;color:var(--ink-400);}
.footer__bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12.5px;color:var(--ink-400);
}

/* ============ 滚动入场 ============ */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.js .reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--nav-w:88px;}
}
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .sidenav{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;}
  .hero{padding:44px 0 40px;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero__side{max-width:520px;}
  .zig{grid-template-columns:1fr;gap:28px;}
  .zig+.zig{margin-top:56px;}
  .zig--rev .zig__text{order:0;}
  .zig--rev .zig__media{order:0;}
  .trust{grid-template-columns:1fr;gap:24px;}
  .cta__box{grid-template-columns:1fr;padding:40px;gap:28px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rail__nav{display:none;}
}
@media (max-width:767px){
  :root{--sp-section:52px;}
  .container{padding:0 16px;}
  .hero h1{font-size:26px;}
  .hero__lead{font-size:15.5px;}
  .stats{grid-template-columns:1fr 1fr;}
  .stats__item{border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
  .stats__item:nth-child(2n){border-right:0;}
  .stats__item:nth-child(n+3){border-bottom:0;}
  .clist__head{display:none;}
  .clist__row{grid-template-columns:1fr;gap:10px;padding:20px 18px;}
  .clist__num{font-size:13px;color:var(--accent-500);letter-spacing:.06em;}
  .clist__arrow{display:none;}
  .rail{padding:4px 16px 18px;}
  .rail__card{width:70vw;max-width:250px;}
  .faq summary{padding:18px 18px;font-size:15.5px;}
  .faq__answer{padding:0 18px 18px;}
  .cta__box{padding:28px;}
  .footer{padding:48px 0 24px;margin-top:40px;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__form{flex-direction:column;}
  .footer__form .btn{width:100%;}
  .footer__bottom{flex-direction:column;align-items:flex-start;margin-top:32px;}
}
@media (max-width:480px){
  .stats{grid-template-columns:1fr;}
  .stats__item{border-right:0;border-bottom:1px solid var(--line);}
  .stats__item:nth-child(n+3){border-bottom:1px solid var(--line);}
  .stats__item:last-child{border-bottom:0;}
  .btn{width:100%;}
  .hero__actions .btn{width:100%;}
  .cta__action .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand-700:#0A5748;
  --brand-600:#0E6E5C;
  --brand-500:#158A72;
  --brand-100:#DDEEE8;
  --brand-50:#EEF6F3;
  --accent-600:#D8451F;
  --accent-500:#F0562D;
  --accent-100:#FFE7DE;
  --ink-900:#14181A;
  --ink-700:#333B39;
  --ink-600:#4A5450;
  --ink-400:#8A948F;
  --line:#E4E7E3;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-dark:#101413;
  --success:#2E9E6B;
  --warn:#E8A33D;
  --danger:#D6453D;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:14px;
  --r-xl:18px;
  --r-2xl:22px;
  --sh-sm:0 1px 2px rgba(20,24,26,.04);
  --sh-md:0 6px 18px rgba(20,24,26,.06);
  --sh-lg:0 14px 36px rgba(20,24,26,.10);
  --rail:96px;
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;letter-spacing:0}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.22}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:3px solid rgba(240,86,45,.28);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:64px 0}
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .2s ease-out,transform .2s ease-out}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn--primary{background:var(--accent-500);color:#fff}
.btn--primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 8px 20px rgba(240,86,45,.24)}
.btn--primary:active{transform:translateY(0);filter:brightness(.96)}
.btn--ghost{background:#fff;border-color:var(--line);color:var(--ink-900)}
.btn--ghost:hover{border-color:var(--brand-500);color:var(--brand-600)}
.btn--lg{height:52px;padding:0 26px;font-size:16px}
.btn--sm{height:40px;padding:0 16px;font-size:14px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;line-height:1;font-weight:600;letter-spacing:0;
}
.badge--cat{background:var(--brand-50);color:var(--brand-700)}
.badge--hot{background:var(--accent-100);color:var(--accent-600)}
.badge--line{background:#fff;border:1px solid var(--line);color:var(--ink-600)}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--rail);
  display:none;flex-direction:column;align-items:center;
  background:#fff;border-right:1px solid var(--line);z-index:80;
  padding:18px 0 20px;
}
.brand{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%;padding-bottom:18px}
.brand__mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;letter-spacing:-.02em;
}
.brand__text{
  writing-mode:vertical-rl;font-size:11px;letter-spacing:.22em;color:var(--ink-400);font-weight:600;line-height:1;
}
.sidenav__nav{display:flex;flex-direction:column;gap:6px;width:100%;padding:0 10px;flex:1}
.sidenav__item{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:12px 4px;border-radius:12px;font-size:12.5px;line-height:1.5;
  color:var(--ink-600);text-align:center;transition:background-color .18s ease-out,color .18s ease-out;
}
.sidenav__item svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sidenav__item:hover{background:var(--brand-50);color:var(--brand-600)}
.sidenav__item.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.sidenav__item.is-active::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--brand-600);
}
.sidenav__item.is-active svg{stroke:var(--brand-600)}
.sidenav__buy{
  width:44px;height:44px;border-radius:50%;background:var(--accent-500);color:#fff;
  display:grid;place-items:center;box-shadow:0 8px 18px rgba(240,86,45,.26);
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.sidenav__buy svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.sidenav__buy:hover{background:var(--accent-600);transform:translateY(-1px)}

/* ---------- 移动端顶部导航 ---------- */
.topbar{
  display:flex;align-items:center;gap:10px;height:56px;padding:0 14px;
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink-900);font-size:15px}
.topbar__mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:12.5px;font-weight:700;
}
.topbar__spacer{flex:1}
.icon-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out;
}
.icon-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;color:var(--ink-700)}
.icon-btn:hover{border-color:var(--brand-500)}
.icon-btn--accent{background:var(--accent-500);border-color:var(--accent-500)}
.icon-btn--accent svg{color:#fff}
.drawer{
  position:fixed;inset:0;background:#fff;z-index:95;display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .26s ease-out;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.drawer__title{font-weight:700;color:var(--ink-900);font-size:15px}
.drawer__list{flex:1;overflow-y:auto;padding:6px 0}
.drawer__list a{
  display:flex;align-items:center;gap:12px;height:52px;padding:0 20px;
  font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer__list a svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.drawer__list a.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.drawer__foot{padding:16px;border-top:1px solid var(--line);flex:0 0 auto}
.drawer__foot .btn{width:100%}

/* ---------- Hero ---------- */
.hero{padding:52px 0 56px;border-bottom:1px solid var(--line);background:var(--bg)}
.hero__grid{display:grid;grid-template-columns:1.22fr .88fr;gap:44px;align-items:center}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--ink-400);margin-bottom:16px}
.crumbs li{display:flex;align-items:center}
.crumbs li+li::before{content:"/";margin:0 8px;color:var(--line)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs [aria-current="page"]{color:var(--ink-400)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--brand-700);letter-spacing:.02em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--brand-600)}
.hero h1{max-width:15em}
.hero__lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--ink-600);max-width:34em}
.hero__lead + .hero__lead{margin-top:8px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero__media{position:relative;border-radius:var(--r-xl);overflow:visible}
.hero__media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-xl);
  border:1px solid var(--line);box-shadow:var(--sh-lg);background:var(--brand-50);
}
.hero__stat{
  position:absolute;left:-14px;bottom:-20px;display:flex;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-md);padding:14px 20px;
}
.hero__stat div{display:flex;flex-direction:column;line-height:1.3}
.hero__stat strong{font-size:24px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums}
.hero__stat span{font-size:12.5px;color:var(--ink-400)}

/* ---------- 板块标题 ---------- */
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section__head h2{position:relative;padding-left:14px}
.section__head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--brand-600);
}
.section__desc{margin-top:10px;font-size:15px;color:var(--ink-400);max-width:44em}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);flex:0 0 auto}
.more-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease-out}
.more-link:hover{color:var(--brand-700)}
.more-link:hover svg{transform:translateX(2px)}

/* ---------- 双列图文卡 ---------- */
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.fcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.fcard:hover{border-color:var(--brand-100);box-shadow:var(--sh-md);transform:translateY(-2px)}
.fcard__media{position:relative;aspect-ratio:3/2;background:var(--brand-50);overflow:hidden}
.fcard__media img{width:100%;height:100%;object-fit:cover}
.fcard__media .badge{position:absolute;left:14px;top:14px}
.fcard__body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.fcard__text{font-size:15px;line-height:1.85;color:var(--ink-600)}
.tick-list{display:flex;flex-direction:column;gap:10px;margin-top:2px}
.tick-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--ink-700)}
.tick-list li::before{
  content:"";flex:0 0 auto;width:16px;height:16px;margin-top:7px;border-radius:50%;
  background:var(--brand-50) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E6E5C' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12.5l4.5 4.5L19 7.5'/></svg>") center/11px no-repeat;
}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step{position:relative;padding-right:20px}
.step__num{
  display:grid;place-items:center;width:44px;height:44px;border-radius:14px;
  background:var(--brand-600);color:#fff;font-size:17px;font-weight:700;
  font-variant-numeric:tabular-nums;box-shadow:0 8px 18px rgba(14,110,92,.22);
}
.step__title{margin-top:18px}
.step__text{margin-top:10px;font-size:15px;line-height:1.85;color:var(--ink-600)}
.step::after{
  content:"";position:absolute;top:22px;left:60px;right:8px;height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px);
}
.step:last-child::after{display:none}

/* ---------- 对照清单 ---------- */
.compare{display:flex;flex-direction:column;gap:16px}
.compare__row{
  display:grid;grid-template-columns:210px 1fr 260px;gap:28px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);padding:26px 28px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.compare__row:hover{border-color:var(--brand-100);box-shadow:var(--sh-md);transform:translateY(-2px)}
.compare__label{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.compare__label h3{font-size:17px}
.compare__desc{font-size:15px;line-height:1.85;color:var(--ink-600)}
.compare__points{display:flex;flex-direction:column;gap:8px}
.compare__points li{display:flex;gap:8px;font-size:14px;line-height:1.7;color:var(--ink-700)}
.compare__points li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--brand-500);
}

/* ---------- 横向滚动片段 ---------- */
.rail{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 0 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail__card{flex:0 0 auto;width:200px;scroll-snap-align:start}
.rail__media{
  position:relative;aspect-ratio:4/5;border-radius:var(--r-xl);overflow:hidden;
  background:var(--brand-50);border:1px solid var(--line);
}
.rail__media img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out}
.rail__card:hover .rail__media img{transform:scale(1.04)}
.rail__media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:46%;
  background:linear-gradient(to top,rgba(16,20,19,.72),rgba(16,20,19,0));
}
.rail__badge{position:absolute;left:10px;top:10px;z-index:2}
.rail__time{
  position:absolute;right:10px;bottom:10px;z-index:2;
  background:rgba(16,20,19,.62);color:#fff;font-size:12.5px;line-height:1;
  padding:4px 8px;border-radius:999px;font-variant-numeric:tabular-nums;
}
.rail__title{margin-top:12px;font-size:14.5px;line-height:1.6;font-weight:600;color:var(--ink-900)}
.rail__card:hover .rail__title{color:var(--brand-600)}

/* ---------- 信任点 ---------- */
.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.trust__item{padding-left:16px;border-left:3px solid var(--brand-100)}
.trust__icon{
  width:36px;height:36px;border-radius:11px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;margin-bottom:14px;
}
.trust__icon svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.trust__item h3{font-size:17px}
.trust__item p{margin-top:8px;font-size:14.5px;line-height:1.85;color:var(--ink-600)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);overflow:hidden}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:last-child{border-bottom:0}
.faq__summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.faq__summary::-webkit-details-marker{display:none}
.faq__summary:hover{color:var(--brand-600);background:var(--brand-50)}
.faq__icon{
  flex:0 0 auto;width:22px;height:22px;fill:none;stroke:var(--brand-600);
  stroke-width:2;stroke-linecap:round;transition:transform .22s ease-out;
}
.faq__item[open] .faq__icon{transform:rotate(45deg)}
.faq__body{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* ---------- CTA ---------- */
.section--cta{padding-bottom:88px}
.cta{
  background:var(--surface-dark);border-radius:var(--r-2xl);padding:48px;
  display:grid;grid-template-columns:1.55fr 1fr;gap:36px;align-items:center;
  box-shadow:var(--sh-lg);
}
.cta h2{color:#fff}
.cta__text p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:40em}
.cta__checks{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:20px}
.cta__checks li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:rgba(255,255,255,.82)}
.cta__checks svg{width:17px;height:17px;fill:none;stroke:var(--accent-500);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.cta__action{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta__note{font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 28px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px}
.footer__brand-mark{font-size:17px;font-weight:700;color:var(--ink-900)}
.footer__desc{margin-top:14px;font-size:14px;line-height:1.85;color:var(--ink-400);max-width:32em}
.footer__social{display:flex;gap:10px;margin-top:18px}
.footer__social a{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-600);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.footer__social a svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.footer__social a:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}
.footer h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:11px}
.footer__links a{
  font-size:14px;color:var(--ink-600);text-decoration:underline;text-decoration-color:transparent;
  text-underline-offset:3px;transition:color .18s ease-out,text-decoration-color .18s ease-out;
}
.footer__links a:hover{color:var(--brand-600);text-decoration-color:var(--brand-600)}
.footer__form{display:flex;gap:10px}
.footer__form input{
  flex:1;height:48px;padding:0 14px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:14px;color:var(--ink-900);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.footer__form input::placeholder{color:var(--ink-400)}
.footer__form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(21,138,114,.16)}
.footer__form .btn{flex:0 0 auto;height:48px}
.footer__form-tip{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--ink-400)}
.footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12.5px;color:var(--ink-400);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  .sidenav{display:flex}
  .topbar{display:none}
  .drawer{display:none}
}
@media (max-width:1279px){
  .compare__row{grid-template-columns:180px 1fr 220px;gap:22px;padding:24px}
}
@media (max-width:1023px){
  .hero__grid{grid-template-columns:1fr;gap:32px}
  .hero__media{max-width:560px}
  .hero__stat{left:auto;right:14px;bottom:-18px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta{grid-template-columns:1fr;padding:36px;gap:26px}
  .section{padding:64px 0}
}
@media (max-width:900px){
  .compare__row{grid-template-columns:1fr;gap:16px}
  .compare__points{flex-direction:row;flex-wrap:wrap;gap:8px 20px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .hero{padding:34px 0 44px}
  .hero__lead{font-size:16px}
  .hero__media img{aspect-ratio:16/12}
  .hero__stat{padding:12px 16px;gap:16px;right:10px}
  .hero__stat strong{font-size:20px}
  .grid2{grid-template-columns:1fr;gap:18px}
  .steps{grid-template-columns:1fr;gap:26px}
  .step{padding-right:0;padding-left:56px}
  .step__num{position:absolute;left:0;top:0}
  .step__title{margin-top:0}
  .step::after{
    left:22px;right:auto;top:56px;bottom:-26px;width:1px;height:auto;
    background:repeating-linear-gradient(180deg,var(--line) 0 6px,transparent 6px 12px);
  }
  .trust{grid-template-columns:1fr;gap:22px}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px}
  .cta{padding:28px;border-radius:18px}
  .cta__action{width:100%}
  .cta__action .btn{width:100%}
  .rail__card{width:76vw;max-width:260px}
  .footer{padding:48px 0 24px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__form{flex-direction:column}
  .footer__form .btn{width:100%}
  .faq__summary{padding:18px;font-size:15px}
  .faq__body{padding:0 18px 18px}
}
@media (max-width:480px){
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{width:100%}
  .compare__row{padding:20px}
  .fcard__body{padding:20px}
}