/* roulang page: index */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --line:rgba(16,32,29,.10);
  --line-strong:rgba(16,32,29,.16);
  --radius-lg:16px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --container:1200px;
  --gutter:32px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink-900);
  margin:0;
  font-weight:600;
  letter-spacing:.005em;
}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--sand{background:var(--sand);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{font-size:clamp(26px,3vw,36px);line-height:1.28;}
.section-head p{color:var(--ink-500);font-size:15px;max-width:52em;margin-top:10px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-700);border-bottom:1px solid rgba(23,86,75,.35);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link .arrow{transition:transform .2s var(--ease);}
.text-link:hover{color:var(--accent);border-color:rgba(228,103,75,.5);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),
             box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:var(--brand-900);border-color:rgba(15,58,51,.3);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);border-color:rgba(44,122,104,.45);}
.btn-invert{background:#fff;color:var(--brand-900);}
.btn-invert:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);box-shadow:0 16px 34px -22px rgba(0,0,0,.6);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;line-height:1;
  padding:6px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-weight:600;
}
.badge-accent{background:rgba(228,103,75,.12);color:#B84A31;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:76px;
  background:rgba(251,250,247,.55);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(16,32,29,.10);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:height .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(251,250,247,.94);
  border-bottom-color:rgba(16,32,29,.16);
}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:16px;font-weight:700;
  color:var(--brand-900);white-space:nowrap;letter-spacing:.01em;
}
.logo:hover{color:var(--brand-700);}
.logo .mark{width:26px;height:26px;flex:0 0 auto;}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none;}
.nav-links a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--ink-700);padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after,
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.search-wrap{position:relative;}
.search-toggle{
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.search-toggle:hover{background:var(--brand-100);border-color:rgba(44,122,104,.3);color:var(--brand-900);}
.search-toggle svg{width:18px;height:18px;}
.search-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:320px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);padding:10px;display:none;
}
.search-panel.is-open{display:block;}
.search-panel input{
  width:100%;height:44px;border-radius:10px;border:1px solid var(--line);
  padding:0 14px;font-size:14px;color:var(--ink-900);background:var(--paper);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-panel input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.14);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-burger span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-burger.is-open span:nth-child(2){opacity:0;}
.nav-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:152px 0 88px;
  background:
    radial-gradient(900px 420px at 8% 0%, rgba(221,235,228,.85), transparent 68%),
    radial-gradient(760px 380px at 100% 6%, rgba(239,233,223,.92), transparent 72%),
    var(--paper);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;
  color:var(--brand-700);background:var(--brand-100);
  border-radius:999px;padding:6px 14px;font-weight:600;
}
.hero h1{
  font-size:clamp(36px,5vw,60px);
  line-height:1.14;
  margin-top:22px;
  word-break:keep-all;
}
.hero-sub{
  font-size:clamp(16px,1.4vw,18px);
  line-height:1.85;
  color:var(--ink-500);
  max-width:34em;
  margin-top:20px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-index{
  display:flex;flex-wrap:wrap;gap:12px 34px;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
}
.hero-index a{display:inline-flex;align-items:baseline;gap:9px;font-size:14px;color:var(--ink-500);}
.hero-index a:hover{color:var(--brand-900);}
.hero-index .num{font-family:var(--serif);font-size:13px;color:var(--accent);}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;
  aspect-ratio:3/2;box-shadow:var(--shadow-lg);
  background:var(--brand-100);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::before{
  content:"";position:absolute;inset:0;z-index:2;opacity:.07;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cg fill='none' stroke='%23ffffff' stroke-width='1.4'%3E%3Cpath d='M0 24a12 12 0 0 1 24 0'/%3E%3Cpath d='M24 24a12 12 0 0 1 24 0'/%3E%3Cpath d='M-12 48a12 12 0 0 1 24 0'/%3E%3Cpath d='M12 48a12 12 0 0 1 24 0'/%3E%3Cpath d='M36 48a12 12 0 0 1 24 0'/%3E%3C/g%3E%3C/svg%3E");
  background-size:48px 48px;
}
.hero-figure::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top right, rgba(15,58,51,.72), rgba(15,58,51,.06) 62%);
}
.hero-card{
  position:absolute;right:-6px;bottom:-26px;width:240px;z-index:3;
  background:rgba(251,250,247,.88);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.7);
  border-radius:14px;padding:16px 18px;box-shadow:var(--shadow-lg);
}
.hero-card .hc-row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-500);}
.hero-card .hc-row + .hc-row{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);}
.hero-card strong{font-size:13px;color:var(--brand-900);font-weight:600;}
.dot-live{
  width:8px;height:8px;border-radius:50%;background:var(--brand-500);
  box-shadow:0 0 0 4px rgba(44,122,104,.16);display:inline-block;
}

/* ---------- 入口索引条 ---------- */
.entry-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(239,233,223,.4);}
.entry-bar ul{display:grid;grid-template-columns:repeat(4,1fr);list-style:none;max-width:var(--container);margin:0 auto;}
.entry-bar li + li{border-left:1px solid var(--line);}
.entry-bar a{
  position:relative;display:flex;flex-direction:column;justify-content:center;gap:4px;
  height:96px;padding:0 28px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.entry-bar a:hover{background:var(--sand);color:var(--brand-900);}
.entry-bar .eb-num{font-family:var(--serif);font-size:12px;letter-spacing:.12em;color:var(--accent);}
.entry-bar .eb-name{font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.4;}
.entry-bar .eb-desc{font-size:13px;color:var(--ink-500);}
.entry-bar .arrow{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  color:var(--brand-500);transition:transform .2s var(--ease);
}
.entry-bar a:hover .arrow{transform:translate(4px,-50%);}

/* ---------- 品牌说明 ---------- */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.story-copy h2{font-size:clamp(26px,3vw,36px);line-height:1.3;margin-top:18px;}
.story-copy p{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin-top:18px;}
.story-points{
  display:grid;grid-template-columns:1fr 1fr;
  border-left:1px solid var(--line);border-top:1px solid var(--line);
}
.story-point{padding:30px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.story-point:nth-child(even){padding-top:46px;}
.story-point .sp-num{font-family:var(--serif);font-size:13px;color:var(--accent);letter-spacing:.1em;}
.story-point h3{font-size:19px;margin-top:10px;line-height:1.4;}
.story-point p{font-size:14px;color:var(--ink-500);margin-top:10px;line-height:1.75;}

/* ---------- 精选卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.card{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(44,122,104,.28);box-shadow:0 18px 42px -26px rgba(16,32,29,.38);}
.card-media{position:relative;overflow:hidden;background:var(--brand-100);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px 26px 28px;}
.card-body h3{font-size:21px;line-height:1.45;margin-top:12px;}
.card-body p{font-size:14.5px;color:var(--ink-500);margin-top:10px;line-height:1.8;}
.card-large .card-media{aspect-ratio:16/10;}
.card-large .card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top, rgba(15,58,51,.55), rgba(15,58,51,0) 55%);
}
.card-large .card-body{padding:26px 30px 30px;}
.card-large .card-body h3{font-size:24px;}
.feature-side{display:grid;gap:24px;}
.card-small{display:grid;grid-template-columns:4fr 6fr;align-items:stretch;}
.card-small .card-media{aspect-ratio:4/3;height:100%;}
.card-small .card-body{padding:18px 20px;display:flex;flex-direction:column;justify-content:center;}
.card-small .card-body h3{font-size:16.5px;line-height:1.5;margin-top:8px;}
.card-small .card-body p{font-size:13px;color:var(--ink-500);margin-top:6px;}
.card-tag{
  position:absolute;left:16px;top:16px;z-index:2;
  background:rgba(251,250,247,.92);color:var(--brand-700);
  font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;letter-spacing:.06em;
}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 56px;align-items:start;}
.news-item{
  display:block;padding:24px 0;border-bottom:1px solid var(--line);
  transition:transform .2s var(--ease);
}
.news-item:hover{transform:translateX(3px);}
.news-item:hover .news-title{color:var(--brand-700);}
.news-title{
  font-family:var(--serif);font-size:19px;line-height:1.5;color:var(--ink-900);
  margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-desc{
  font-size:14px;color:var(--ink-500);line-height:1.75;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:14px;font-size:13px;color:var(--ink-500);
}
.news-meta time{font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.news-meta .arrow{color:var(--brand-500);transition:transform .2s var(--ease);}
.news-item:hover .news-meta .arrow{transform:translateX(4px);}
.news-empty{
  grid-column:1 / -1;text-align:center;padding:48px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:rgba(255,255,255,.6);
}
.news-empty p{color:var(--ink-500);font-size:15px;margin-bottom:18px;}

/* ---------- 信任背书 ---------- */
.trust-grid{display:grid;grid-template-columns:6fr 6fr;gap:64px;align-items:start;}
.trust-lead h2{font-size:clamp(26px,3vw,32px);line-height:1.36;}
.trust-lead p{font-size:15px;color:var(--ink-500);margin-top:18px;line-height:1.9;}
.trust-list{list-style:none;display:grid;gap:22px;}
.trust-list li{padding-left:16px;border-left:2px solid var(--accent);}
.trust-list h3{font-size:17px;line-height:1.4;}
.trust-list p{font-size:14px;color:var(--ink-500);margin-top:6px;line-height:1.75;}

/* ---------- CTA / 订阅 ---------- */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--brand-900);border-radius:24px;
  padding:64px;color:#fff;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.cta-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.10;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cg fill='none' stroke='%23ffffff' stroke-width='1.2'%3E%3Cpath d='M0 24a12 12 0 0 1 24 0'/%3E%3Cpath d='M24 24a12 12 0 0 1 24 0'/%3E%3Cpath d='M-12 48a12 12 0 0 1 24 0'/%3E%3Cpath d='M12 48a12 12 0 0 1 24 0'/%3E%3Cpath d='M36 48a12 12 0 0 1 24 0'/%3E%3C/g%3E%3C/svg%3E");
  background-size:48px 48px;
}
.cta-block > *{position:relative;z-index:2;}
.cta-block h2{color:#fff;font-size:clamp(26px,3vw,34px);line-height:1.3;}
.cta-block .cta-note{color:rgba(255,255,255,.72);font-size:15px;margin-top:14px;line-height:1.8;}
.subscribe-form{margin-top:28px;}
.subscribe-form label{
  display:block;font-size:13px;color:rgba(255,255,255,.8);margin-bottom:8px;letter-spacing:.04em;
}
.subscribe-row{display:flex;gap:12px;flex-wrap:wrap;}
.subscribe-row input{
  flex:1 1 220px;min-width:0;height:48px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:14px;padding:0 16px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.subscribe-row input::placeholder{color:rgba(255,255,255,.45);}
.subscribe-row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,103,75,.24);background:rgba(255,255,255,.12);}
.form-hint{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:12px;}
.cta-side{border-left:1px solid rgba(255,255,255,.16);padding-left:48px;}
.cta-side .big-cta{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-family:var(--serif);font-size:clamp(22px,2.4vw,30px);color:#fff;line-height:1.35;
}
.cta-side .big-cta:hover{color:#fff;}
.cta-side .big-cta .arrow-badge{
  flex:0 0 auto;width:52px;height:52px;border-radius:50%;
  border:1px solid rgba(255,255,255,.35);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.cta-side .big-cta:hover .arrow-badge{background:var(--accent);border-color:var(--accent);transform:translateX(4px);}
.cta-side .small-note{font-size:13.5px;color:rgba(255,255,255,.6);margin-top:14px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:60px;padding:16px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-family:var(--sans);font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-500);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s var(--ease);}
.faq-a-inner{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:60em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:3fr 3fr 3fr 3fr;gap:40px;}
.footer-brand .logo{color:#fff;font-size:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo .mark path,.footer-brand .logo .mark circle{stroke:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:16px;max-width:24em;}
.footer-col h4{font-size:14px;color:#fff;font-family:var(--sans);font-weight:600;letter-spacing:.08em;}
.footer-col ul{list-style:none;margin-top:16px;display:grid;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.6);line-height:1.9;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-grid,.story-grid,.feature-grid,.trust-grid,.cta-block{grid-template-columns:1fr;gap:40px;}
  .hero{padding:132px 0 72px;}
  .cta-side{border-left:0;border-top:1px solid rgba(255,255,255,.16);padding-left:0;padding-top:36px;}
  .hero-card{right:16px;bottom:16px;}
  .entry-bar ul{grid-template-columns:repeat(2,1fr);}
  .entry-bar li:nth-child(3){border-left:0;}
  .entry-bar li:nth-child(n+3){border-top:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  :root{--gutter:24px;}
  .site-header{height:60px;}
  .site-header.is-scrolled{height:60px;}
  .nav-burger{display:flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    background:var(--brand-900);
    flex-direction:column;align-items:stretch;gap:0;
    padding:20px 24px 40px;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{
    display:block;width:100%;color:#fff;font-size:18px;line-height:56px;
    border-bottom:1px solid rgba(255,255,255,.12);padding:0;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:#fff;}
  .nav-links a.is-active::before{
    content:"";display:inline-block;width:4px;height:4px;border-radius:50%;
    background:var(--accent);vertical-align:middle;margin-right:10px;
  }
  .logo{font-size:13px;}
  .logo .mark{width:22px;height:22px;}
  .search-panel{width:min(320px,calc(100vw - 48px));}
  .section{padding:72px 0;}
  .news-grid{grid-template-columns:1fr;gap:0;}
  .story-points{grid-template-columns:1fr;}
  .story-point:nth-child(even){padding-top:30px;}
  .card-small{grid-template-columns:5fr 7fr;}
  .cta-block{padding:40px 28px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:520px){
  :root{--gutter:20px;}
  .hero{padding:112px 0 56px;}
  .hero h1{font-size:clamp(30px,8.6vw,38px);}
  .hero-actions .btn{width:100%;}
  .hero-index{gap:10px 20px;}
  .hero-card{position:relative;right:auto;bottom:auto;width:100%;margin-top:16px;}
  .entry-bar ul{grid-template-columns:1fr;}
  .entry-bar li + li{border-left:0;border-top:1px solid var(--line);}
  .entry-bar a{height:auto;padding:20px 20px;}
  .card-large .card-body{padding:20px 20px 24px;}
  .card-large .card-body h3{font-size:20px;}
  .card-small{grid-template-columns:1fr;}
  .card-small .card-media{aspect-ratio:16/10;}
  .section-head{margin-bottom:28px;}
  .footer-grid{grid-template-columns:1fr;}
  .subscribe-row .btn{width:100%;}
  .cta-side .big-cta{font-size:20px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --accent-soft:#FBEDE9;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --line:rgba(16,32,29,.10);
  --line-strong:rgba(16,32,29,.18);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink-900);margin:0;font-weight:600;}
p{margin:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
@media (min-width:1280px){
  .container{max-width:1280px;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:76px;
  background:rgba(251,250,247,.55);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(16,32,29,.10);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(251,250,247,.94);
  border-bottom-color:rgba(16,32,29,.16);
  box-shadow:0 8px 24px rgba(16,32,29,.10);
}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:17px;
  letter-spacing:.02em;
  color:var(--brand-900);
  white-space:nowrap;
  font-weight:600;
}
.logo:hover{color:var(--brand-700);}
.logo .mark{width:30px;height:30px;flex:0 0 30px;}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-700);
  letter-spacing:.02em;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after,
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.search-wrap{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  background:transparent;
  color:var(--ink-700);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.search-toggle svg{width:19px;height:19px;}
.search-toggle:hover{background:var(--brand-100);color:var(--brand-900);border-color:var(--line);}
.search-panel{
  width:0;overflow:hidden;
  transition:width .24s ease,opacity .2s ease;
  opacity:0;
}
.search-panel.is-open{width:320px;opacity:1;margin-left:8px;}
.search-panel input{
  width:100%;height:44px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);
  background:#fff;
  font-size:14px;
  color:var(--ink-900);
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.14);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;font-weight:500;
  font-family:var(--sans);
  letter-spacing:.02em;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:transparent;color:var(--brand-900);border-color:rgba(15,58,51,.3);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);border-color:rgba(15,58,51,.4);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#d05a40;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.nav-burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.6);
  padding:0;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav-burger span{display:block;width:18px;height:1.6px;background:var(--brand-900);border-radius:2px;transition:transform .24s ease,opacity .2s ease;}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
body.nav-open .nav-burger span:nth-child(2){opacity:0;}
body.nav-open .nav-burger span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

@media (max-width:960px){
  .nav-links{gap:22px;}
  .nav-links a{font-size:14px;}
  .nav-cta{display:none;}
}
@media (max-width:768px){
  .site-header{height:60px;}
  .site-header.is-scrolled{height:60px;}
  .logo{font-size:13px;gap:8px;}
  .logo .mark{width:26px;height:26px;flex:0 0 26px;}
  .nav-burger{display:flex;}
  .search-panel.is-open{display:none;}
  .nav-links{
    position:fixed;
    top:60px;left:0;right:0;
    height:calc(100vh - 60px);
    background:var(--brand-900);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:24px 24px 40px;
    transform:translateX(100%);
    transition:transform .3s cubic-bezier(.2,.7,.2,1);
    overflow-y:auto;
    z-index:95;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links li{width:100%;border-bottom:1px solid rgba(255,255,255,.12);}
  .nav-links a{
    display:block;
    width:100%;
    padding:16px 0;
    color:#fff;
    font-size:18px;
    line-height:56px;
    padding:0;
    min-height:56px;
  }
  .nav-links a:hover{color:#fff;}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--accent);}
}

/* ============ 面包屑 ============ */
.crumb-bar{
  padding:104px 0 0;
  font-size:13px;
  color:var(--ink-500);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-500);}
.crumb .sep{color:rgba(16,32,29,.28);}
.crumb .now{color:var(--ink-900);font-weight:500;}
@media (max-width:768px){
  .crumb-bar{padding-top:82px;}
}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:32px 0 72px;
  background:
    radial-gradient(1000px 420px at 12% 0%,rgba(44,122,104,.10),transparent 62%),
    radial-gradient(700px 320px at 92% 12%,rgba(228,103,75,.08),transparent 66%),
    var(--paper);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand-500);
  text-transform:none;
  margin-bottom:20px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;background:var(--accent);
  display:inline-block;
}
.page-hero h1{
  font-size:clamp(32px,4.2vw,50px);
  line-height:1.18;
  letter-spacing:.005em;
  margin-bottom:20px;
}
.page-hero h1 em{font-style:normal;color:var(--brand-500);}
.hero-lead{
  font-size:16px;
  line-height:1.9;
  color:var(--ink-500);
  max-width:620px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:26px;
}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.06em;
  background:var(--brand-100);
  color:var(--brand-700);
}
.tag-accent{background:var(--accent-soft);color:#B8482F;}
.tag-line{background:transparent;border:1px solid var(--line-strong);color:var(--ink-500);}
.hero-figure{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  aspect-ratio:3/2;
  border:1px solid var(--line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(210deg,rgba(15,58,51,.06) 0%,rgba(15,58,51,.36) 62%,rgba(15,58,51,.68) 100%);
}
.hero-figure figcaption{
  position:absolute;
  left:20px;right:20px;bottom:18px;
  color:#fff;
  font-size:13px;
  line-height:1.7;
  z-index:2;
}
.hero-figure figcaption strong{display:block;font-size:15px;font-family:var(--serif);margin-bottom:2px;letter-spacing:.02em;}
.hero-badge{
  position:absolute;
  right:18px;top:18px;
  z-index:2;
  background:rgba(251,250,247,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-radius:var(--radius-md);
  padding:10px 14px;
  font-size:12px;
  color:var(--ink-700);
  line-height:1.6;
  border:1px solid rgba(255,255,255,.6);
}
.hero-badge b{display:block;color:var(--brand-700);font-size:13px;font-weight:600;}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{max-width:560px;}
}
@media (max-width:640px){
  .page-hero{padding:24px 0 48px;}
  .hero-figure{border-radius:16px;}
}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-sand{background:var(--sand);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(26px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.section-head p{color:var(--ink-500);font-size:15.5px;}
.kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand-500);
  margin-bottom:12px;
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .section-head{margin-bottom:32px;}
}

/* ============ 步骤区 ============ */
.steps-layout{
  display:grid;
  grid-template-columns:264px 1fr;
  gap:56px;
  align-items:start;
}
.steps-side{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 22px;
  box-shadow:var(--shadow-sm);
}
.steps-side h3{
  font-size:15px;
  font-family:var(--sans);
  font-weight:600;
  color:var(--ink-900);
  padding-bottom:14px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
  letter-spacing:.04em;
}
.steps-side ol{display:flex;flex-direction:column;gap:2px;}
.steps-side a{
  display:flex;align-items:flex-start;gap:12px;
  padding:11px 10px;
  border-radius:var(--radius-sm);
  font-size:14px;
  color:var(--ink-700);
  line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.steps-side a .n{
  font-family:var(--sans);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--brand-500);
  letter-spacing:.06em;
  padding-top:2px;
  flex:0 0 22px;
}
.steps-side a:hover{background:var(--brand-100);color:var(--brand-900);}
.steps-side a.is-current{background:var(--brand-100);color:var(--brand-900);font-weight:600;}
.steps-side .side-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--ink-500);
  line-height:1.7;
}

.step-list{display:flex;flex-direction:column;gap:24px;}
.step-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px 34px;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{border-color:rgba(44,122,104,.28);transform:translateY(-3px);box-shadow:0 18px 40px -30px rgba(16,32,29,.45);}
.step-head{display:flex;align-items:baseline;gap:18px;margin-bottom:14px;}
.step-num{
  font-family:var(--sans);
  font-variant-numeric:tabular-nums;
  font-size:34px;
  line-height:1;
  font-weight:600;
  color:rgba(15,58,51,.16);
  letter-spacing:-.02em;
}
.step-card h3{font-size:19px;line-height:1.45;}
.step-card p.desc{font-size:15px;color:var(--ink-500);line-height:1.85;}
.step-tip{
  margin-top:18px;
  display:flex;gap:10px;
  padding:14px 16px;
  border-radius:var(--radius-sm);
  background:var(--accent-soft);
  border-left:3px solid var(--accent);
  font-size:14px;
  color:#8F3B26;
  line-height:1.75;
}
.step-tip i{color:var(--accent);font-size:13px;margin-top:5px;}
.step-tip b{color:#7A3220;font-weight:600;}

@media (max-width:1024px){
  .steps-layout{grid-template-columns:1fr;gap:28px;}
  .steps-side{position:static;}
  .steps-side ol{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .steps-side ol li{flex:1 1 140px;}
  .steps-side a{padding:8px 10px;background:var(--paper);}
}
@media (max-width:640px){
  .step-card{padding:24px 20px;}
  .step-head{gap:12px;flex-direction:column;align-items:flex-start;}
  .step-num{font-size:26px;}
}

/* ============ 核对清单 ============ */
.checklist-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:36px 38px;
  box-shadow:var(--shadow-sm);
}
.checklist-wrap h2{font-size:24px;margin-bottom:10px;}
.checklist-wrap > p{color:var(--ink-500);font-size:15px;margin-bottom:26px;}
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:14px 32px;}
.checklist li{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 0;
  border-bottom:1px dashed rgba(16,32,29,.12);
  font-size:15px;
  color:var(--ink-700);
}
.check-box{
  flex:0 0 20px;
  width:20px;height:20px;
  margin-top:3px;
  border:1px solid rgba(44,122,104,.45);
  border-radius:5px;
  background:var(--brand-100);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-700);
  font-size:11px;
}
.checklist li span.txt{line-height:1.7;}
.checklist li small{display:block;color:var(--ink-500);font-size:13px;margin-top:2px;}
@media (max-width:860px){
  .checklist{grid-template-columns:1fr;}
  .checklist-wrap{padding:26px 20px;}
}

/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;
  min-height:56px;
  background:none;border:none;
  text-align:left;
  font-size:17px;
  font-family:var(--sans);
  font-weight:500;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-500);}
.faq-icon{
  flex:0 0 20px;
  width:20px;height:20px;
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-500);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.8px;}
.faq-icon::after{left:9px;top:0;width:1.8px;height:20px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 46px 20px 0;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
}
.faq-item.is-open .faq-a{max-height:360px;}
@media (max-width:640px){
  .faq-q{font-size:16px;}
  .faq-a p{padding-right:20px;}
}

/* ============ CTA ============ */
.cta-block{
  background:var(--brand-900);
  border-radius:24px;
  padding:56px 56px;
  color:#fff;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:40px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(228,103,75,.22),transparent 66%);
  pointer-events:none;
}
.cta-block h2{
  color:#fff;
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.32;
  margin-bottom:14px;
}
.cta-block p{color:rgba(255,255,255,.74);font-size:15px;line-height:1.85;max-width:520px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;z-index:1;}
.cta-actions .hint{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;}
@media (max-width:900px){
  .cta-block{grid-template-columns:1fr;padding:36px 24px;border-radius:18px;}
}
@media (max-width:640px){
  .cta-actions .btn{width:100%;}
}

/* ============ 相关分类 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.related-card:hover{border-color:rgba(44,122,104,.28);transform:translateY(-3px);box-shadow:0 18px 40px -30px rgba(16,32,29,.45);}
.related-card .idx{
  font-variant-numeric:tabular-nums;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand-500);
  margin-bottom:12px;
  display:block;
}
.related-card h3{font-size:18px;margin-bottom:8px;color:var(--ink-900);}
.related-card p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.related-card .go{
  margin-top:16px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;
  color:var(--brand-500);
}
.related-card .go i{transition:transform .2s ease;font-size:12px;}
.related-card:hover .go i{transform:translateX(4px);}
@media (max-width:900px){
  .related-grid{grid-template-columns:1fr;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  margin-top:80px;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.site-footer .logo{color:#fff;font-size:16px;}
.site-footer .logo:hover{color:#fff;}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:300px;
}
.footer-col h4{
  color:#fff;
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-bottom{
  padding-top:24px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:44px 0 24px;margin-top:56px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --line:rgba(16,32,29,.10);
  --line-strong:rgba(16,32,29,.18);
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background-color:var(--paper);
  background-image:radial-gradient(900px 420px at 82% -6%,rgba(44,122,104,.08),transparent 70%);
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font:inherit;}
h1,h2,h3,h4,h5,h6{font-family:var(--serif);font-weight:600;color:var(--ink-900);margin:0;line-height:1.32;}
p{margin:0;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(251,250,247,.55);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.94);
  box-shadow:0 10px 30px rgba(16,32,29,.10);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:26px;
  min-height:var(--nav-h);
  transition:min-height .22s ease;
}
.site-header.is-scrolled .nav-inner{min-height:64px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:17px;
  font-weight:600;
  color:var(--brand-900);
  white-space:nowrap;
  letter-spacing:.01em;
}
.logo:hover{color:var(--brand-700);}
.logo .mark{width:32px;height:32px;flex:none;}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-700);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after,
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-wrap{display:flex;align-items:center;gap:8px;}
.search-toggle{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  color:var(--ink-700);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.search-toggle svg{width:20px;height:20px;}
.search-toggle:hover{background:var(--brand-100);color:var(--brand-900);border-color:rgba(44,122,104,.28);}
.search-panel{
  width:0;opacity:0;
  overflow:hidden;
  transition:width .24s ease,opacity .24s ease;
}
.search-wrap.is-open .search-panel{width:300px;opacity:1;}
.search-panel input{
  width:100%;height:44px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-900);
  font-size:14px;
}
.search-panel input::placeholder{color:var(--ink-500);}
.search-panel input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.14);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;border-color:rgba(15,58,51,.3);color:var(--brand-900);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);border-color:rgba(44,122,104,.4);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  flex-direction:column;
  gap:4px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
}
.nav-burger span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}

/* ---------- 面包屑与文章头 ---------- */
.site-main{padding-bottom:96px;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-top:28px;
  font-size:13px;
  line-height:1.6;
  color:var(--ink-500);
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:rgba(16,32,29,.26);}
.breadcrumb .current{color:var(--ink-700);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{
  padding:22px 0 30px;
  margin-bottom:44px;
  border-bottom:1px solid var(--line);
}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  letter-spacing:.12em;
  line-height:1.7;
}
.tag-accent{background:rgba(228,103,75,.13);color:#B94A31;}
.article-title{
  font-size:clamp(28px,3.4vw,36px);
  line-height:1.34;
  margin:20px 0 18px;
  max-width:900px;
  overflow-wrap:anywhere;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  font-size:13px;
  color:var(--ink-500);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(16,32,29,.24);display:inline-block;}
.article-meta strong{color:var(--ink-700);font-weight:600;}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;
  align-items:start;
}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.95;
  color:var(--ink-700);
  overflow-wrap:anywhere;
}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.42;
  color:var(--ink-900);
  margin:40px 0 18px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  border-radius:2px;
  background:var(--accent);
}
.article-body h3{font-size:19px;line-height:1.5;margin:30px 0 12px;color:var(--ink-900);}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--ink-900);}
.article-body p{margin:0 0 22px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  background:var(--sand);
  border-left:3px solid var(--brand-500);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-md);margin:26px 0;width:100%;height:auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;
  display:block;
  overflow-x:auto;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  white-space:nowrap;
}
.article-body th{background:var(--brand-100);color:var(--brand-900);font-weight:600;}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--brand-700);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.article-body strong{color:var(--ink-900);}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:24px;
}
.side-label{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--ink-500);
  margin-bottom:10px;
}
.side-cat{
  font-family:var(--serif);
  font-size:19px;
  color:var(--brand-900);
  margin-bottom:16px;
}
.side-links{list-style:none;margin:0;padding:0;}
.side-links li{border-top:1px solid var(--line);}
.side-links li:first-child{border-top:0;}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 0;
  font-size:15px;
  color:var(--ink-700);
}
.side-links a span{
  color:var(--brand-500);
  transition:transform .2s ease;
}
.side-links a:hover{color:var(--brand-900);}
.side-links a:hover span{transform:translateX(4px);}
.side-btn{width:100%;margin-top:20px;}
.side-note{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-500);
}
.side-note strong{display:block;color:var(--ink-900);font-size:15px;margin-bottom:6px;}
.side-figure{
  border-radius:var(--radius-md);
  overflow:hidden;
  margin-bottom:14px;
  border:1px solid var(--line);
}
.side-figure img{width:100%;height:150px;object-fit:cover;}

/* ---------- 空态 ---------- */
.notice-empty{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:44px 32px;
  max-width:760px;
}
.notice-empty h2{
  font-size:24px;
  margin:0 0 12px;
  padding-left:0;
}
.notice-empty h2::before{display:none;}
.notice-empty p{margin-bottom:22px;color:var(--ink-500);}

/* ---------- 相关入口 ---------- */
.section{padding:72px 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-head h2{font-size:clamp(24px,2.6vw,30px);}
.section-head p{font-size:14px;color:var(--ink-500);margin-top:8px;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--brand-700);
  text-decoration:underline;
  text-underline-offset:5px;
  white-space:nowrap;
}
.link-more:hover{color:var(--brand-900);}
.reco-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.reco-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.reco-item:hover{
  transform:translateY(-3px);
  border-color:rgba(44,122,104,.28);
  box-shadow:var(--shadow-lg);
}
.reco-thumb{
  width:96px;height:72px;
  flex:none;
  border-radius:8px;
  overflow:hidden;
  background:var(--brand-100);
}
.reco-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.reco-item:hover .reco-thumb img{transform:scale(1.05);}
.reco-text{min-width:0;}
.reco-text h3{
  font-family:var(--sans);
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink-900);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:6px;
}
.reco-text time{font-size:12px;color:var(--ink-500);font-variant-numeric:tabular-nums;}
.reco-link{display:block;color:inherit;}
.reco-link:hover{color:inherit;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:72px;
  background:var(--brand-900);
  border-radius:24px;
  padding:56px 48px;
  color:#fff;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:40px;
  align-items:center;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(24px,2.8vw,32px);
  margin-bottom:14px;
}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.9;max-width:520px;}
.cta-form{display:flex;gap:12px;margin-top:24px;max-width:460px;}
.cta-form input{
  flex:1;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:14px;
  min-width:0;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5);}
.cta-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,103,75,.22);}
.cta-form .btn{background:var(--accent);color:#fff;flex:none;}
.cta-form .btn:hover{background:#CF5940;color:#fff;}
.cta-hint{font-size:13px;color:rgba(255,255,255,.55);margin-top:14px;}
.cta-side{border-left:1px solid rgba(255,255,255,.16);padding-left:40px;}
.cta-side .big{
  font-family:var(--serif);
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.4;
  color:#fff;
  margin-bottom:12px;
}
.cta-side p{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:20px;}
.cta-side .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;}
.cta-side .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.6);}
.form-msg{font-size:13px;color:#F6C9BC;margin-top:12px;min-height:20px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:#fff;
  padding:64px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .logo{color:#fff;font-size:17px;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .mark{width:32px;height:32px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-col h4{
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.54);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding-left:24px;padding-right:24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .sidebar{position:static;top:auto;}
  .article-body{max-width:100%;}
  .reco-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:44px 36px;}
  .cta-side{border-left:0;border-top:1px solid rgba(255,255,255,.16);padding-left:0;padding-top:28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:900px){
  .nav-inner{gap:16px;}
  .nav-links{gap:18px;}
  .nav-links a{font-size:14px;}
  .nav-cta{display:none;}
  .search-wrap.is-open .search-panel{width:200px;}
}
@media (max-width:768px){
  :root{--nav-h:60px;}
  .container{padding-left:24px;padding-right:24px;}
  .nav-inner{min-height:60px;}
  .logo{font-size:13px;}
  .logo .mark{width:26px;height:26px;}
  .nav-burger{display:inline-flex;}
  .nav-links{
    position:fixed;
    top:60px;left:0;right:0;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 24px 40px;
    background:var(--brand-900);
    transform:translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.2,1);
    overflow-y:auto;
    z-index:130;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{
    display:block;
    color:#fff;
    font-size:18px;
    line-height:56px;
    padding:0;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:#fff;}
  .nav-links a:hover{color:rgba(255,255,255,.85);}
  .search-panel,.search-wrap.is-open .search-panel{display:none;}
  .article-head{margin-bottom:32px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .reco-grid{grid-template-columns:minmax(0,1fr);}
  .section{padding-top:56px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-band{padding:36px 24px;border-radius:20px;margin-top:56px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;}
  .breadcrumb .current{white-space:normal;}
}
@media (max-width:520px){
  .article-title{font-size:24px;}
  .article-meta{font-size:12px;}
  .side-card{padding:20px;}
  .reco-item{flex-direction:column;}
  .reco-thumb{width:100%;height:140px;}
  .site-main{padding-bottom:64px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --line:rgba(16,32,29,.10);
  --line-strong:rgba(16,32,29,.18);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  color:var(--ink-900);
  font-weight:600;
  margin:0;
  letter-spacing:.01em;
}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:76px;
  background:rgba(251,250,247,.55);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(16,32,29,.10);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:height .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(251,250,247,.94);
  border-bottom-color:rgba(16,32,29,.16);
  box-shadow:0 8px 26px rgba(16,32,29,.09);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-900);text-decoration:none;white-space:nowrap;
}
.logo:hover{color:var(--brand-700);}
.logo .mark{width:30px;height:30px;flex:none;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;color:var(--ink-700);text-decoration:none;
  transition:color .2s ease;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.search-wrap{position:relative;}
.search-toggle{
  width:40px;height:40px;border-radius:10px;
  border:1px solid rgba(16,32,29,.12);background:transparent;
  color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.search-toggle:hover{background:var(--brand-100);color:var(--brand-700);border-color:rgba(44,122,104,.3);}
.search-toggle svg{width:18px;height:18px;}
.search-panel{
  position:absolute;right:0;top:calc(100% + 10px);
  width:0;opacity:0;overflow:hidden;padding:0;
  border-radius:10px;background:#fff;border:1px solid transparent;
  transition:width .24s ease,opacity .24s ease,padding .24s ease;
}
.search-wrap.is-open .search-panel{
  width:320px;opacity:1;padding:8px;border-color:var(--line);box-shadow:var(--shadow-lg);
}
.search-panel input[type="search"]{
  width:100%;height:44px;margin:0;border-radius:10px;
  border:1px solid var(--line-strong);background:var(--paper);
  padding:0 14px;font-size:14px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input[type="search"]:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.14);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;text-decoration:none;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:rgba(15,58,51,.3);color:var(--brand-900);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);border-color:rgba(15,58,51,.42);}
.btn-light{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn-light:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(16,32,29,.12);background:transparent;
  padding:0;cursor:pointer;position:relative;
}
.nav-burger span{
  position:absolute;left:12px;right:12px;height:1.8px;background:var(--brand-900);
  border-radius:2px;transition:transform .24s ease,opacity .24s ease;
}
.nav-burger span:nth-child(1){top:15px;}
.nav-burger span:nth-child(2){top:21px;}
.nav-burger span:nth-child(3){top:27px;}
.nav-burger.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg);background:#fff;}
.nav-burger.is-active span:nth-child(2){opacity:0;}
.nav-burger.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);background:#fff;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:152px 0 88px;
  background:
    radial-gradient(900px 420px at 84% 6%, rgba(221,235,228,.9), rgba(221,235,228,0) 70%),
    linear-gradient(180deg,#FBFAF7 0%,#FBFAF7 62%,#EFE9DF 100%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.12;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.06fr .94fr;
  gap:56px;align-items:center;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-500);margin-bottom:22px;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:rgba(16,32,29,.3);}
.breadcrumb .current{color:var(--ink-900);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;color:var(--brand-700);
  background:rgba(221,235,228,.8);
  border:1px solid rgba(44,122,104,.2);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero-copy h1{
  font-size:clamp(32px,4.2vw,50px);
  line-height:1.18;
  letter-spacing:.005em;
}
.lead{
  margin-top:20px;font-size:17px;line-height:1.9;color:var(--ink-700);
  max-width:56ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{
  display:flex;flex-wrap:wrap;gap:14px 26px;
  margin-top:30px;padding-top:24px;border-top:1px solid var(--line);
}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-500);}
.hero-points span{font-family:var(--font-serif);font-size:13px;color:var(--accent);letter-spacing:.08em;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:20px;box-shadow:var(--shadow-lg);
}
.glass-card{
  position:absolute;right:-10px;bottom:-22px;width:238px;
  padding:16px 18px;border-radius:14px;
  background:rgba(251,250,247,.86);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(16,32,29,.12);
  box-shadow:var(--shadow-lg);
}
.gc-label{font-size:12px;letter-spacing:.14em;color:var(--ink-500);margin:0 0 6px;}
.gc-value{font-family:var(--font-serif);font-size:20px;color:var(--brand-900);margin:0 0 6px;line-height:1.3;}
.gc-meta{font-size:12px;color:var(--ink-500);margin:0;}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section.sand{background:var(--sand);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(26px,3vw,36px);line-height:1.3;}
.section-head p{margin-top:16px;font-size:16px;color:var(--ink-500);line-height:1.9;}
.kicker{
  display:inline-block;font-size:12px;letter-spacing:.18em;
  color:var(--brand-700);margin-bottom:14px;
}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-sm);
  transition:border-color .24s ease,box-shadow .24s ease;
}
.compare-card:hover{border-color:rgba(44,122,104,.28);box-shadow:var(--shadow-lg);}
.compare-card.good{border-top:3px solid var(--brand-500);}
.compare-card.bad{border-top:3px solid var(--accent);}
.compare-card h3{font-size:20px;display:flex;align-items:center;gap:10px;}
.icon-round{
  width:28px;height:28px;border-radius:50%;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-family:var(--font-sans);
}
.good .icon-round{background:var(--brand-100);color:var(--brand-700);}
.bad .icon-round{background:rgba(228,103,75,.13);color:#B84A32;}
.compare-intro{font-size:14px;color:var(--ink-500);margin:10px 0 8px;}
.compare-list li{
  display:flex;gap:12px;padding:16px 0;
  border-bottom:1px dashed var(--line);font-size:15px;line-height:1.75;
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0;}
.compare-list .mark-icon{flex:none;font-weight:700;font-size:15px;line-height:1.7;}
.compare-list .tick{color:var(--brand-500);}
.compare-list .cross{color:var(--accent);}
.compare-list strong{display:block;color:var(--ink-900);font-weight:600;font-size:15px;margin-bottom:2px;}
.compare-list .desc{display:block;font-size:14px;color:var(--ink-500);}

/* ---------- checklist ---------- */
.checklist-panel{
  margin-top:32px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-sm);
}
.checklist-panel h3{font-size:19px;margin-bottom:6px;}
.checklist-panel .hint{font-size:14px;color:var(--ink-500);margin-bottom:22px;}
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 20px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:15px;line-height:1.7;
}
.check-box{
  width:20px;height:20px;flex:none;margin-top:3px;
  border:1.5px solid var(--brand-500);border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--brand-700);background:#fff;
}

/* ---------- stats ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-top:8px;
}
.stat-item{padding:30px 26px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:var(--font-serif);font-size:38px;line-height:1.05;
  color:var(--brand-900);display:flex;align-items:baseline;gap:6px;
}
.stat-num small{font-family:var(--font-sans);font-size:14px;color:var(--ink-500);font-weight:400;}
.stat-label{margin-top:10px;font-size:14px;color:var(--ink-500);line-height:1.7;}

/* ---------- accordion ---------- */
.accordion-layout{display:grid;grid-template-columns:330px 1fr;gap:56px;align-items:start;}
.accordion-aside{position:sticky;top:96px;}
.accordion-aside h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;margin-bottom:16px;}
.accordion-aside p{font-size:15px;color:var(--ink-500);line-height:1.9;}
.aside-note{
  margin-top:24px;padding:16px 18px;border-radius:var(--radius-sm);
  background:var(--brand-100);border:1px solid rgba(44,122,104,.18);
  font-size:14px;color:var(--brand-700);line-height:1.8;
}
details.acc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
details.acc[open]{border-color:rgba(44,122,104,.3);box-shadow:var(--shadow-sm);}
details.acc summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:18px 22px;min-height:56px;
  font-family:var(--font-serif);font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
  transition:background .2s ease;
}
details.acc summary:hover{background:rgba(221,235,228,.4);}
details.acc summary::-webkit-details-marker{display:none;}
.acc-num{font-family:var(--font-sans);font-size:13px;color:var(--accent);letter-spacing:.1em;flex:none;}
details.acc summary::after{
  content:"+";margin-left:auto;font-family:var(--font-sans);
  font-size:20px;font-weight:400;color:var(--brand-500);line-height:1;flex:none;
}
details.acc[open] summary::after{content:"−";}
.acc-body{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-700);}
.acc-body p{margin-bottom:14px;}
.acc-tip{
  margin-top:14px;padding:12px 16px;border-radius:0 8px 8px 0;
  background:rgba(228,103,75,.08);border-left:3px solid var(--accent);
  font-size:14px;color:var(--ink-700);
}

/* ---------- scenario ---------- */
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scenario-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.scenario-card:hover{transform:translateY(-3px);border-color:rgba(44,122,104,.28);box-shadow:var(--shadow-lg);}
.scenario-thumb{overflow:hidden;background:var(--brand-100);}
.scenario-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.scenario-card:hover .scenario-thumb img{transform:scale(1.03);}
.scenario-body{padding:24px;}
.badge{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);margin-bottom:14px;
}
.badge-accent{background:rgba(228,103,75,.13);color:#B84A32;}
.scenario-body h3{font-size:18px;line-height:1.45;margin-bottom:10px;}
.scenario-body p{font-size:14px;color:var(--ink-500);line-height:1.8;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.step{padding:32px 24px 8px;border-right:1px solid var(--line);position:relative;}
.step:last-child{border-right:0;}
.step-num{
  font-family:var(--font-serif);font-size:15px;letter-spacing:.1em;
  color:var(--accent);display:block;margin-bottom:12px;
}
.step h3{font-size:18px;margin-bottom:10px;line-height:1.45;}
.step p{font-size:14px;color:var(--ink-500);line-height:1.8;}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;}
.faq-wrap h2{font-size:clamp(26px,3vw,34px);margin-bottom:12px;}
.faq-wrap .faq-sub{font-size:15px;color:var(--ink-500);margin-bottom:32px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px;}
.related-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);text-decoration:none;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(44,122,104,.3);box-shadow:var(--shadow-sm);}
.related-card h3{font-size:17px;margin-bottom:6px;color:var(--ink-900);}
.related-card p{font-size:13px;color:var(--ink-500);margin:0;line-height:1.7;}
.related-card .arrow{color:var(--brand-500);font-size:18px;flex:none;transition:transform .22s ease;}
.related-card:hover .arrow{transform:translateX(4px);}

/* ---------- cta ---------- */
.cta-panel{
  background:var(--brand-900);border-radius:24px;
  padding:56px;color:#fff;
  display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
}
.cta-panel h2{color:#fff;font-size:clamp(24px,2.8vw,32px);line-height:1.35;margin-bottom:14px;}
.cta-panel p{font-size:15px;line-height:1.9;color:rgba(251,250,247,.78);max-width:52ch;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-foot{
  margin-top:22px;font-size:13px;color:rgba(251,250,247,.6);
  display:flex;align-items:center;gap:8px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(251,250,247,.78);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{color:#fff;font-size:15px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(251,250,247,.68);max-width:34ch;}
.footer-col h4{
  color:#fff;font-family:var(--font-sans);font-size:14px;font-weight:600;
  letter-spacing:.08em;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(251,250,247,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(251,250,247,.68);}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(251,250,247,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-figure{padding-right:16px;}
  .glass-card{right:0;bottom:-18px;}
  .accordion-layout{grid-template-columns:1fr;gap:32px;}
  .accordion-aside{position:static;}
  .scenario-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step{border-right:0;border-bottom:1px solid var(--line);padding-bottom:24px;}
  .step:nth-child(odd){border-right:1px solid var(--line);}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-panel{grid-template-columns:1fr;padding:40px;gap:28px;}
}
@media (max-width:900px){
  .search-wrap, .nav-cta{display:none;}
}
@media (max-width:767px){
  .container{padding:0 24px;}
  .site-header{height:60px;}
  .site-header.is-scrolled{height:60px;}
  .logo{font-size:13px;gap:8px;}
  .logo .mark{width:26px;height:26px;}
  .nav-burger{display:block;}
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--brand-900);
    padding:12px 24px 40px;overflow-y:auto;
    transform:translateX(105%);transition:transform .28s ease;
    z-index:130;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links li{border-bottom:1px solid rgba(255,255,255,.12);}
  .nav-links a{
    display:block;color:#fff;font-size:18px;line-height:56px;padding:0;font-weight:500;
  }
  .nav-links a:hover{color:#fff;}
  .nav-links a.is-active{color:#fff;}
  .nav-links a.is-active::after{display:none;}
  .page-hero{padding:112px 0 64px;}
  .hero-points{gap:10px 20px;}
  .section{padding:64px 0;}
  .compare-grid{grid-template-columns:1fr;gap:18px;}
  .compare-card{padding:24px;}
  .checklist{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .scenario-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0 !important;}
  .cta-panel{padding:32px 24px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .glass-card{width:200px;padding:14px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  details.acc summary{font-size:16px;padding:16px 18px;}
  .acc-body{padding:0 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition:none !important;animation:none !important;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --border:rgba(16,32,29,.10);
  --border-strong:rgba(44,122,104,.28);
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;color:var(--ink-900);line-height:1.32;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;color:inherit;}
svg{display:block;}
::selection{background:var(--brand-100);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:76px;display:flex;align-items:center;
  background:rgba(251,250,247,.58);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--border);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(251,250,247,.95);
  box-shadow:0 10px 24px rgba(16,32,29,.10);
  border-bottom-color:rgba(16,32,29,.14);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:16px;font-weight:700;
  color:var(--brand-900);white-space:nowrap;letter-spacing:.01em;
  transition:color .2s ease;
}
.logo .mark{width:30px;height:30px;flex:none;}
.logo:hover{color:var(--brand-700);}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{
  position:relative;display:inline-block;padding:10px 0;
  font-size:15px;color:var(--ink-700);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.search-wrap{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-900);background:rgba(15,58,51,.05);
  transition:background .2s ease,color .2s ease;
}
.search-toggle svg{width:19px;height:19px;}
.search-toggle:hover{background:var(--brand-100);}
.search-panel{
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:0;opacity:0;overflow:hidden;pointer-events:none;
  transition:width .25s ease,opacity .2s ease;
}
.search-panel.is-open{width:320px;opacity:1;pointer-events:auto;}
.search-panel input{
  width:100%;height:44px;padding:0 16px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.14);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:background .2s ease;
}
.nav-burger span{display:block;width:20px;height:1.8px;background:var(--brand-900);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-burger:hover{background:var(--brand-100);}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(6.8px) rotate(45deg);}
body.nav-open .nav-burger span:nth-child(2){opacity:0;}
body.nav-open .nav-burger span:nth-child(3){transform:translateY(-6.8px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-900);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:transparent;color:var(--brand-900);border-color:rgba(15,58,51,.3);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);}
.btn-light{background:var(--paper);color:var(--brand-900);}
.btn-light:hover{background:#fff;color:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);border-bottom:1px solid rgba(44,122,104,.5);padding-bottom:2px;transition:color .2s ease,gap .2s ease;}
.link-arrow:hover{color:var(--brand-900);gap:10px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  background:
    linear-gradient(180deg,rgba(251,250,247,.96) 0%,rgba(251,250,247,.90) 55%,rgba(251,250,247,.98) 100%),
    url(/assets/images/backpic/back-3.png) center/cover no-repeat;
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,122,104,.14),rgba(44,122,104,0) 70%);
  pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:26px;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:rgba(16,32,29,.28);}
.breadcrumb .current{color:var(--ink-700);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;font-weight:600;
  color:var(--brand-700);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1.5px;background:var(--accent);border-radius:2px;}
.hero-title{
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.16;
  margin:18px 0 20px;
  max-width:16em;
  letter-spacing:.005em;
}
.hero-lead{font-size:17px;line-height:1.9;color:var(--ink-700);max-width:62ch;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  background:var(--brand-100);color:var(--brand-700);
}
.tag.is-accent{background:rgba(228,103,75,.12);color:#B84A31;}

.faq-search{margin-top:34px;max-width:660px;}
.faq-search-field{
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:8px 8px 8px 16px;box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-search-field:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(44,122,104,.12);}
.faq-search-field svg{width:18px;height:18px;color:var(--ink-500);flex:none;}
.faq-search-field input{
  flex:1;min-width:0;height:40px;border:0;background:transparent;font-size:15px;
}
.faq-search-field input:focus{outline:none;}
.faq-search-field input::placeholder{color:rgba(16,32,29,.34);}
.faq-search-hint{margin-top:12px;font-size:13px;color:var(--ink-500);min-height:20px;}
.faq-search-hint strong{color:var(--brand-700);font-weight:600;}

/* ---------- sections ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-sand{background:var(--sand);border-top:1px solid rgba(16,32,29,.06);border-bottom:1px solid rgba(16,32,29,.06);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-700);line-height:1.85;}

/* ---------- faq layout ---------- */
.faq-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start;}
.faq-toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px 20px;box-shadow:var(--shadow-sm);
}
.faq-toc h2{
  font-family:var(--font-sans);
  font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--ink-500);
  margin-bottom:14px;
}
.faq-toc a{
  display:block;padding:9px 12px;border-radius:9px;
  font-size:15px;color:var(--ink-700);
  border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.faq-toc a:hover{background:var(--sand);color:var(--brand-900);}
.faq-toc a.is-active{background:var(--brand-100);color:var(--brand-900);font-weight:600;border-left-color:var(--accent);}
.toc-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--border);
  font-size:13px;line-height:1.7;color:var(--ink-500);
}

.faq-group{margin-bottom:56px;scroll-margin-top:112px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:8px;}
.group-index{
  flex:none;width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-900);color:#fff;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.group-head h2{font-size:clamp(21px,2.4vw,25px);line-height:1.4;}
.group-desc{font-size:15px;color:var(--ink-700);line-height:1.85;margin:10px 0 18px 52px;}
.faq-list{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 4px 20px 0;text-align:left;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  flex:none;position:relative;width:20px;height:20px;margin-top:4px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand-500);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .22s ease,background .22s ease;
}
.faq-icon::before{width:14px;height:1.8px;}
.faq-icon::after{width:1.8px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.2,1);}
.faq-a-inner{
  padding:0 44px 22px 0;
  font-size:15px;line-height:1.9;color:var(--ink-700);
}
.faq-a-inner p+p{margin-top:10px;}
.faq-empty{
  display:none;padding:22px 24px;border:1px dashed rgba(44,122,104,.4);
  border-radius:var(--radius-md);background:#fff;
  font-size:15px;color:var(--ink-700);
}
.faq-empty.is-visible{display:block;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.related-card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-lg);}
.related-num{
  flex:none;font-family:var(--font-serif);font-size:20px;font-weight:700;
  color:var(--brand-500);font-variant-numeric:tabular-nums;
}
.related-body h3{font-family:var(--font-sans);font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:4px;}
.related-body p{font-size:13px;line-height:1.65;color:var(--ink-500);}
.related-card .arrow{
  margin-left:auto;flex:none;color:var(--brand-500);
  transition:transform .2s ease;
}
.related-card:hover .arrow{transform:translateX(4px);}

/* ---------- cta ---------- */
.cta-block{
  display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;
  background:var(--brand-900);color:#fff;
  border-radius:24px;padding:60px;
  box-shadow:var(--shadow-lg);
}
.cta-block h2{
  font-size:clamp(24px,3vw,34px);line-height:1.3;color:#fff;margin:16px 0 16px;
}
.cta-block p{font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.78);max-width:46ch;}
.eyebrow-light{color:rgba(255,255,255,.72);}
.eyebrow-light::before{background:var(--accent);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(255,255,255,.16);}
.cta-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:3fr 3fr 3fr 3fr;gap:40px;}
.footer-brand .logo{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.65);max-width:32ch;}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;font-weight:700;letter-spacing:.14em;
  color:rgba(255,255,255,.9);margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:90;
    flex-direction:column;justify-content:center;gap:0;
    background:var(--brand-900);
    padding:80px 32px 48px;
    transform:translateX(100%);
    transition:transform .3s cubic-bezier(.2,.7,.2,1);
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links li{width:100%;max-width:420px;}
  .nav-links a{
    display:block;padding:16px 0;font-size:18px;color:#fff;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  .nav-links a::after{display:none;}
  .nav-links a:hover,.nav-links a.is-active{color:var(--accent);}
  .nav-cta,.search-wrap{display:none;}
  .nav-burger{display:flex;position:relative;z-index:95;}
  body.nav-open .nav-burger span{background:#fff;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .faq-toc{position:static;top:auto;padding:16px;}
  .faq-toc h2{margin-bottom:10px;}
  .faq-toc ul{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
  .faq-toc li{flex:none;}
  .faq-toc a{
    white-space:nowrap;padding:8px 14px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);border-left:0;
    font-size:14px;
  }
  .faq-toc a.is-active{background:var(--brand-900);color:#fff;font-weight:600;}
  .toc-note{display:none;}
}
@media (max-width:899px){
  .cta-block{grid-template-columns:1fr;gap:32px;padding:40px 32px;}
  .cta-media{order:-1;}
  .related-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .container{padding:0 24px;}
  .site-header{height:60px;}
  .site-header.is-scrolled{height:60px;}
  .logo{font-size:13px;}
  .logo .mark{width:24px;height:24px;}
  .page-hero{padding:110px 0 52px;}
  .section{padding:56px 0;}
  .hero-lead{font-size:15.5px;}
  .faq-search-field{flex-wrap:wrap;padding:12px;}
  .faq-search-field input{width:100%;flex:1 1 100%;}
  .faq-search-field .btn{width:100%;}
  .faq-q{font-size:16px;padding:18px 0;}
  .faq-a-inner{padding-right:8px;}
  .group-desc{margin-left:0;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-block{padding:32px 24px;border-radius:18px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .hero-title{font-size:clamp(26px,8vw,32px);}
  .hero-meta{gap:8px;}
  .group-head{gap:12px;}
  .group-index{width:32px;height:32px;border-radius:9px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0F3A33;
  --brand-700:#17564B;
  --brand-500:#2C7A68;
  --brand-100:#DDEBE4;
  --accent:#E4674B;
  --sand:#EFE9DF;
  --paper:#FBFAF7;
  --ink-900:#10201D;
  --ink-700:#2C3F3A;
  --ink-500:#5A6B66;
  --line:rgba(16,32,29,.10);
  --line-strong:rgba(16,32,29,.18);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-md:0 8px 24px -14px rgba(16,32,29,.28);
  --shadow-lg:0 24px 60px -28px rgba(16,32,29,.28);
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  color:var(--ink-900);
  margin:0;
  font-weight:600;
  letter-spacing:.01em;
}

p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}

a{
  color:var(--brand-700);
  text-decoration:none;
  transition:color .2s var(--ease);
}
a:hover{color:var(--brand-500);}

img{max-width:100%;display:block;border-style:none;}

ul,ol{margin:0;padding:0;list-style:none;}

button{font-family:inherit;font-size:inherit;cursor:pointer;background:none;border:none;color:inherit;}

input{font-family:inherit;font-size:inherit;}

:focus-visible{
  outline:2px solid var(--brand-500);
  outline-offset:3px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ============ 顶栏 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(251,250,247,.55);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(16,32,29,.06);
  transition:height .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(251,250,247,.94);
  border-bottom-color:rgba(16,32,29,.16);
}

.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--brand-900);
  white-space:nowrap;
  flex:0 0 auto;
}
.logo:hover{color:var(--brand-900);}
.logo .mark{width:30px;height:30px;flex:0 0 30px;}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-700);
  letter-spacing:.01em;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:-6px;
  height:2px;
  background:transparent;
  border-radius:2px;
  transition:background .2s var(--ease);
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{background:rgba(44,122,104,.35);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-links a.is-active::after{background:var(--accent);}

.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.search-wrap{position:relative;display:flex;align-items:center;}

.search-toggle{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  color:var(--brand-900);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.search-toggle svg{width:19px;height:19px;}
.search-toggle:hover{background:var(--brand-100);color:var(--brand-700);}

.search-panel{
  width:0;
  overflow:hidden;
  transition:width .28s var(--ease),margin .28s var(--ease);
}
.search-panel.is-open{width:320px;margin-left:8px;}
.search-panel input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.9);
  color:var(--ink-900);
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-panel input::placeholder{color:#93a29d;}
.search-panel input:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(44,122,104,.14);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{
  background:var(--brand-700);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-lg);
}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{
  background:transparent;
  color:var(--brand-900);
  border-color:rgba(15,58,51,.3);
}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.nav-cta{display:inline-flex;}

.nav-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  border-radius:10px;
  transition:background .2s var(--ease);
}
.nav-burger span{
  display:block;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--brand-900);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-burger:hover{background:var(--brand-100);}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  flex-direction:column;
  background:var(--brand-900);
  padding:22px 24px 32px;
}
.nav-drawer.is-open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
}
.drawer-top .logo{color:#fff;font-size:14px;}
.drawer-top .logo .mark{width:26px;height:26px;flex:0 0 26px;}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;
  border-radius:10px;
  font-size:22px;
  line-height:1;
}
.drawer-close:hover{background:rgba(255,255,255,.1);}
.drawer-links{flex:1 1 auto;margin-top:8px;}
.drawer-links a{
  display:flex;
  align-items:center;
  height:56px;
  color:#fff;
  font-size:18px;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-links a:hover{color:#F2B3A4;padding-left:6px;}
.drawer-links a.is-active{color:#F2B3A4;}
.drawer-bottom{padding-top:20px;}
.drawer-bottom .btn{width:100%;background:var(--accent);color:#fff;}
.drawer-bottom .btn:hover{background:#cf563c;color:#fff;}
.drawer-note{
  margin-top:14px;
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.62);
}

/* ============ 主区域 ============ */
main{padding-top:76px;}

.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--brand-500);
  margin-bottom:14px;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:34px;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:rgba(16,32,29,.32);}
.breadcrumb .current{color:var(--ink-900);font-weight:600;}

/* Hero */
.page-hero{
  position:relative;
  padding:44px 0 84px;
  overflow:hidden;
  background:var(--paper);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.14;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(60% 70% at 18% 12%,rgba(221,235,228,.85),rgba(251,250,247,0) 68%);
  z-index:0;
}
.page-hero > .container{position:relative;z-index:1;}

.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}

.hero-copy h1{
  font-size:clamp(34px,4.2vw,52px);
  line-height:1.16;
  margin-bottom:22px;
  letter-spacing:.005em;
}
.hero-lede{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  max-width:34em;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-meta-item{display:flex;flex-direction:column;gap:4px;}
.hero-meta-item .num{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--accent);
}
.hero-meta-item .txt{
  font-size:14px;
  color:var(--ink-700);
}

.hero-figure{position:relative;}
.hero-figure img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:var(--radius-lg);
  background:linear-gradient(210deg,rgba(15,58,51,0) 40%,rgba(15,58,51,.42) 100%);
  pointer-events:none;
}
.hero-note{
  position:absolute;
  left:-16px;
  bottom:-16px;
  z-index:2;
  width:248px;
  padding:14px 16px;
  border-radius:14px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--shadow-md);
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.hero-note .dot{
  width:8px;height:8px;
  margin-top:9px;
  flex:0 0 8px;
  border-radius:50%;
  background:var(--brand-500);
  box-shadow:0 0 0 4px rgba(44,122,104,.16);
}
.hero-note strong{
  display:block;
  font-size:14px;
  color:var(--ink-900);
  line-height:1.5;
}
.hero-note span{
  display:block;
  font-size:12px;
  color:var(--ink-500);
  line-height:1.6;
}

/* 数据条 */
.fact-row{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(239,233,223,.42);
}
.fact-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.fact{
  padding:26px 26px 26px 0;
  border-right:1px solid var(--line);
}
.fact:last-child{border-right:none;padding-right:0;}
.fact strong{
  display:block;
  font-family:var(--font-serif);
  font-size:26px;
  line-height:1.2;
  color:var(--brand-900);
  margin-bottom:6px;
}
.fact span{
  font-size:13px;
  color:var(--ink-500);
  letter-spacing:.02em;
}

/* 通用区块 */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-sand{background:var(--sand);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:40px;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(26px,3vw,34px);
  line-height:1.3;
  max-width:22em;
}
.section-desc{
  max-width:30em;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-500);
}

/* 筛选 chips */
.chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:32px 0 8px;
}
.chip{
  height:40px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-700);
  font-size:14px;
  letter-spacing:.02em;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.chip.is-active{
  background:var(--brand-900);
  border-color:var(--brand-900);
  color:#fff;
}
.chip.is-active:hover{color:#fff;}

/* 时间线 */
.timeline{
  position:relative;
  margin-top:38px;
  padding-left:36px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;
  top:10px;
  bottom:10px;
  width:2px;
  background:linear-gradient(180deg,var(--brand-500),rgba(44,122,104,.12));
}
.tl-item{
  position:relative;
  padding:0 0 26px;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:-36px;
  top:22px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--paper);
  border:2px solid var(--brand-500);
}
.tl-item[data-hidden="true"]{display:none;}
.tl-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:24px 26px;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{
  border-color:rgba(44,122,104,.28);
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.tl-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.tl-date{
  font-size:13px;
  font-weight:600;
  color:var(--ink-500);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  letter-spacing:.06em;
  font-weight:600;
}
.badge-accent{background:rgba(228,103,75,.14);color:#C24C33;}

.tl-card h3{
  font-size:19px;
  line-height:1.5;
  margin-bottom:8px;
}
.tl-card p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.tl-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.tl-more svg{width:14px;height:14px;transition:transform .2s var(--ease);}
.tl-more:hover svg{transform:translateX(4px);}

.empty-hint{
  margin-top:24px;
  padding:22px 24px;
  border-radius:var(--radius-sm);
  border:1px dashed var(--line-strong);
  background:rgba(255,255,255,.6);
  font-size:15px;
  color:var(--ink-500);
  text-align:center;
}

/* 要点提示条 */
.notice-band{
  display:flex;
  gap:18px;
  align-items:flex-start;
  margin-top:34px;
  padding:22px 26px;
  background:rgba(228,103,75,.07);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.notice-band strong{
  display:block;
  font-size:15px;
  color:var(--ink-900);
  margin-bottom:4px;
}
.notice-band p{font-size:14px;line-height:1.8;color:var(--ink-700);}

/* 阅读方式 5/7 */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:64px;
  align-items:start;
}
.split-left h2{
  font-size:clamp(26px,3vw,34px);
  line-height:1.3;
  margin-bottom:20px;
}
.split-left p{
  font-size:15px;
  line-height:1.9;
  color:var(--ink-500);
  margin-bottom:14px;
}
.step-list{border-top:1px solid var(--line);}
.step-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.step-num{
  font-family:var(--font-serif);
  font-size:22px;
  color:var(--brand-500);
  line-height:1.3;
  letter-spacing:.04em;
}
.step-item h3{
  font-size:17px;
  line-height:1.5;
  margin-bottom:6px;
  font-family:var(--font-sans);
  font-weight:700;
  color:var(--ink-900);
}
.step-item p{font-size:14px;line-height:1.8;color:var(--ink-500);margin:0;}

/* FAQ */
.faq-list{
  max-width:880px;
  margin:36px auto 0;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
  min-height:64px;
  padding:16px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  position:relative;
  flex:0 0 20px;
  width:20px;height:20px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-500);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a p{
  padding:0 40px 20px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-500);
  margin:0;
}

/* 订阅 CTA */
.cta-block{
  background:var(--brand-900);
  border-radius:24px;
  padding:64px;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  color:#fff;
}
.cta-block h2{
  color:#fff;
  font-size:clamp(26px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-block .cta-lede{
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.74);
  margin-bottom:26px;
  max-width:32em;
}
.sub-form{display:flex;flex-direction:column;gap:12px;max-width:420px;}
.sub-form label{
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.78);
}
.sub-row{display:flex;gap:12px;}
.sub-row input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:15px;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-row input::placeholder{color:rgba(255,255,255,.5);}
.sub-row input:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(255,255,255,.12);
  box-shadow:0 0 0 3px rgba(228,103,75,.2);
}
.sub-row .btn{
  background:var(--accent);
  color:#fff;
}
.sub-row .btn:hover{background:#cf563c;color:#fff;}
.form-note{
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  min-height:22px;
}
.cta-side{border-left:1px solid rgba(255,255,255,.16);padding-left:44px;}
.cta-side .big{
  font-family:var(--font-serif);
  font-size:26px;
  line-height:1.4;
  color:#fff;
  margin-bottom:12px;
}
.cta-side p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.68);
  margin-bottom:22px;
}
.cta-side .btn{
  background:transparent;
  border:1px solid rgba(255,255,255,.4);
  color:#fff;
}
.cta-side .btn:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* 相关栏目 */
.related{padding-top:12px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:32px;
}
.related-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.related-card:hover{
  border-color:rgba(44,122,104,.28);
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.related-card .rc-index{
  font-size:12px;
  font-weight:700;
  letter-spacing:.15em;
  color:var(--accent);
  display:block;
  margin-bottom:10px;
}
.related-card h3{
  font-size:19px;
  line-height:1.5;
  margin-bottom:8px;
  color:var(--ink-900);
}
.related-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-500);
  margin:0;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  margin-top:88px;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .logo{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo .mark{width:28px;height:28px;flex:0 0 28px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:26em;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-family:var(--font-sans);
  font-weight:700;
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.68);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:4px;}
.footer-col p{
  font-size:13px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  margin:0;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1100px){
  .nav-links{gap:20px;}
  .nav-links a{font-size:14px;}
  .logo{font-size:15px;}
  .search-panel.is-open{width:220px;}
  .hero-grid{gap:40px;}
  .cta-block{padding:48px;gap:40px;}
  .cta-side{padding-left:32px;}
}

@media screen and (max-width:1024px){
  .container{padding-left:28px;padding-right:28px;}
  .nav-inner{padding-left:28px;padding-right:28px;}
  .nav-links{display:none;}
  .nav-burger{display:inline-flex;}
  .nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-figure{max-width:620px;}
  .hero-note{left:12px;bottom:12px;width:230px;}
  .split{grid-template-columns:1fr;gap:40px;}
  .cta-block{grid-template-columns:1fr;padding:44px;gap:36px;}
  .cta-side{border-left:none;border-top:1px solid rgba(255,255,255,.16);padding-left:0;padding-top:28px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .fact-grid{grid-template-columns:1fr 1fr;}
  .fact{padding:22px 22px 22px 0;}
  .fact:nth-child(2){border-right:none;padding-right:0;}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line);}
}

@media screen and (max-width:768px){
  .site-header{height:60px;}
  .site-header.is-scrolled{height:60px;}
  main{padding-top:60px;}
  .logo{font-size:13px;gap:8px;}
  .logo .mark{width:26px;height:26px;flex:0 0 26px;}
  .search-panel.is-open{width:170px;}
  .nav-inner{gap:10px;padding-left:20px;padding-right:20px;}
  .container{padding-left:20px;padding-right:20px;}
  .page-hero{padding:30px 0 56px;}
  .hero-copy h1{font-size:clamp(28px,7.4vw,38px);}
  .hero-lede{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .hero-meta{gap:20px;}
  .section{padding:60px 0;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .timeline{padding-left:28px;}
  .tl-item::before{left:-28px;top:24px;width:12px;height:12px;}
  .timeline::before{left:5px;}
  .tl-card{padding:20px;}
  .tl-card h3{font-size:17px;}
  .faq-q{font-size:16px;min-height:58px;}
  .faq-a p{padding-right:0;}
  .sub-row{flex-direction:column;}
  .sub-row .btn{width:100%;}
  .cta-block{padding:32px 24px;border-radius:18px;}
  .cta-side .big{font-size:22px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px;}
  .site-footer{padding:52px 0 24px;margin-top:60px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .notice-band{padding:18px;gap:12px;}
}

@media screen and (max-width:520px){
  .hero-meta{flex-direction:column;gap:14px;}
  .fact-grid{grid-template-columns:1fr;}
  .fact{border-right:none;padding:18px 0;border-bottom:1px solid var(--line);}
  .fact:last-child{border-bottom:none;}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line);}
  .chips{gap:8px;}
  .chip{height:36px;padding:0 16px;font-size:13px;}
  .hero-note{position:relative;left:0;bottom:0;width:100%;margin-top:14px;}
  .hero-figure::after{border-radius:var(--radius-lg);}
  .step-item{grid-template-columns:44px 1fr;gap:12px;}
  .breadcrumb{font-size:12px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}