/* roulang page: index */
:root{
  --c-bg:#0A0A0B;
  --c-surface:#141416;
  --c-paper:#F6F2E9;
  --c-ink:#F5F1E8;
  --c-ink-dark:#14120E;
  --c-muted:#A39C90;
  --c-primary:#F2A81D;
  --c-primary-deep:#B87509;
  --c-accent:#E2542A;
  --c-support:#1F4A3A;
  --c-line:rgba(245,241,232,0.14);
  --c-line-dark:rgba(20,18,14,0.12);
  --r-card:8px;
  --r-block:10px;
  --r-btn:6px;
  --sp-section:clamp(52px,7vw,110px);
  --shadow-dark:0 8px 28px rgba(0,0,0,.5);
  --shadow-light:0 6px 20px rgba(20,18,14,.08);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Oswald","Bebas Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--c-primary);color:#14120E}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:2px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0A0B}
::-webkit-scrollbar-thumb{background:#2C2C31;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:var(--c-primary)}

/* ===== 容器与通用排版 ===== */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0;position:relative}
.section--paper{background:var(--c-paper);color:var(--c-ink-dark)}
.section--tight{padding-top:calc(var(--sp-section) * .68)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.14em;color:var(--c-primary);font-weight:600}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);display:block;flex-shrink:0}
.section--paper .eyebrow{color:var(--c-primary-deep)}
.section--paper .eyebrow::before{background:var(--c-primary-deep)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:22px;margin-bottom:46px;padding-bottom:22px;border-bottom:1px solid var(--c-line);
}
.section--paper .section-head{border-bottom-color:var(--c-line-dark)}
.section-head>div{max-width:760px}
.section-title{font-size:clamp(26px,3.2vw,42px);font-weight:900;letter-spacing:-.02em;line-height:1.26;margin-top:14px}
.section-desc{margin-top:14px;font-size:16px;line-height:1.9;color:rgba(245,241,232,.7)}
.section--paper .section-desc{color:rgba(20,18,14,.66)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15.5px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--c-primary);color:#14120E}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(226,84,42,.3)}
.btn-ghost{border-color:rgba(245,241,232,.5);color:var(--c-ink);background:transparent}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-sm{padding:11px 22px;font-size:14.5px}
.text-link{position:relative;display:inline-block;font-weight:700;color:var(--c-primary)}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;width:100%;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease-out;
}
.text-link:hover::after{transform:scaleX(1)}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:72px;
  border-bottom:1px solid transparent;
  transition:height .25s ease,background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  height:60px;background:rgba(10,10,11,.92);border-bottom-color:var(--c-line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;color:var(--c-primary);flex-shrink:0}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;color:var(--c-ink)}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;padding:8px 0;
  color:rgba(245,241,232,.78);transition:color .16s ease-out;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:100%;height:2px;background:var(--c-primary);
  transform:translateX(-50%) scaleX(0);transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-cta{margin-left:6px}
.menu-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:6px;color:var(--c-ink);
}
.menu-toggle i{display:block;width:18px;height:2px;background:currentColor;position:relative}
.menu-toggle i::before,.menu-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.menu-toggle i::before{top:-6px}
.menu-toggle i::after{top:6px}
.drawer-scrim{
  position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-scrim.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:#0F0F11;border-left:1px solid var(--c-line);padding:26px 24px 34px;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);
  overflow-y:auto;display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}
.drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:6px;color:var(--c-ink);font-size:18px;line-height:1}
.drawer-link{padding:15px 0;border-bottom:1px solid var(--c-line);font-size:16px;font-weight:600;color:rgba(245,241,232,.85)}
.drawer-link.is-active{color:var(--c-primary)}
.drawer-link:hover{color:var(--c-primary)}
.drawer-cta{margin-top:24px}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:146px 0 var(--sp-section);min-height:620px}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(100deg,rgba(10,10,11,.88) 0%,rgba(10,10,11,.7) 48%,rgba(10,10,11,.78) 100%),
  url("/assets/images/backpic/back-1.jpg");
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:3px 3px;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:24px;z-index:1;
  background:linear-gradient(to bottom,rgba(10,10,11,0),var(--c-bg));
}
.hero-inner{
  position:relative;z-index:2;display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(0,.72fr);
  gap:56px;align-items:center;
}
.hero-title{
  font-size:clamp(38px,5.4vw,68px);font-weight:900;line-height:1.12;
  letter-spacing:-.02em;margin-top:20px;
}
.hero-title em{font-style:normal;color:var(--c-primary)}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:rgba(245,241,232,.8);max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px 40px;margin-top:42px;padding-top:26px;
  border-top:1px solid var(--c-line);
}
.hero-meta-item strong{
  display:block;font-family:var(--font-num);font-size:28px;font-weight:700;
  letter-spacing:-.01em;color:var(--c-primary);line-height:1.2;
}
.hero-meta-item span{font-size:13px;color:var(--c-muted);letter-spacing:.06em}
.hero-poster{justify-self:end;width:100%;max-width:330px}
.poster-frame{
  position:relative;aspect-ratio:2/3;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(245,241,232,.22);box-shadow:0 18px 48px rgba(0,0,0,.62);
  background:#1B1B1F;transition:border-color .22s ease-out;
}
.poster-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.poster-frame:hover{border-color:var(--c-primary)}
.poster-frame:hover img{transform:scale(1.03)}
.poster-tag{
  position:absolute;left:14px;top:14px;z-index:3;font-size:12px;letter-spacing:.14em;
  padding:5px 11px;border:1px solid rgba(242,168,29,.7);color:var(--c-primary);
  background:rgba(10,10,11,.62);border-radius:4px;
}
.poster-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:48px 16px 16px;
  background:linear-gradient(to top,rgba(10,10,11,.95),rgba(10,10,11,0));
}
.poster-caption strong{display:block;font-size:16px;font-weight:800;line-height:1.5}
.poster-caption span{font-size:12.5px;color:var(--c-muted)}

/* ===== 痛点 ===== */
.pain-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);column-gap:48px}
.pain-item{padding:30px 0;border-bottom:1px solid var(--c-line)}
.pain-item:nth-child(odd){grid-column:1}
.pain-item:nth-child(even){grid-column:2}
.pain-num{font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;color:rgba(242,168,29,.55)}
.pain-title{font-size:20px;font-weight:800;margin-top:10px;letter-spacing:-.01em;line-height:1.5}
.pain-text{margin-top:10px;font-size:15.5px;line-height:1.85;color:rgba(245,241,232,.66)}

/* ===== 解决方案 ===== */
.solution-list{border-top:1px solid var(--c-line)}
.solution-row{
  display:grid;grid-template-columns:minmax(0,.36fr) minmax(0,.64fr);
  gap:36px;padding:34px 0;border-bottom:1px solid var(--c-line);align-items:start;
  transition:background-color .2s ease-out;
}
.solution-row:hover{background:rgba(242,168,29,.04)}
.solution-label{font-size:clamp(20px,2.2vw,27px);font-weight:900;letter-spacing:-.02em;line-height:1.34}
.solution-label span{
  display:block;font-family:var(--font-num);font-size:12.5px;font-weight:500;
  letter-spacing:.16em;color:var(--c-primary);margin-bottom:9px;
}
.solution-text{font-size:16px;line-height:1.9;color:rgba(245,241,232,.72)}

/* ===== 方法步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.step{position:relative;padding-left:26px}
.step::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:1px;background:var(--c-line)}
.step-num{
  font-family:var(--font-num);font-size:clamp(64px,7vw,96px);font-weight:700;line-height:.9;
  letter-spacing:-.03em;color:transparent;-webkit-text-stroke:1.5px rgba(242,168,29,.7);
}
.step-title{font-size:19px;font-weight:800;margin-top:18px;line-height:1.5}
.step-text{margin-top:10px;font-size:15.5px;line-height:1.85;color:rgba(245,241,232,.66)}

/* ===== 成果数据 ===== */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.metric{padding:0 30px;border-left:1px solid var(--c-line)}
.metric:first-child{border-left:0;padding-left:0}
.metric-num{
  font-family:var(--font-num);font-size:clamp(42px,5vw,64px);font-weight:700;
  line-height:1;letter-spacing:-.03em;color:var(--c-primary);
}
.metric-unit{font-size:15.5px;font-weight:800;margin-top:14px}
.metric-note{margin-top:8px;font-size:14px;line-height:1.8;color:var(--c-muted)}

/* ===== 专题导轨 ===== */
.rail{display:flex;gap:22px;overflow-x:auto;padding-bottom:14px;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.topic-card{
  flex:0 0 258px;scroll-snap-align:start;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;background:var(--c-surface);display:flex;flex-direction:column;
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.topic-card:hover{border-color:var(--c-primary);transform:translateY(-4px);box-shadow:var(--shadow-dark)}
.topic-card .poster-ratio{aspect-ratio:2/3;overflow:hidden;background:#1B1B1F}
.topic-card.is-wide{flex:0 0 340px}
.topic-card.is-wide .poster-ratio{aspect-ratio:16/9}
.topic-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.topic-card:hover img{transform:scale(1.03)}
.topic-body{padding:16px 16px 20px}
.topic-title{font-size:16px;font-weight:800;line-height:1.5;transition:color .18s ease-out}
.topic-card:hover .topic-title{color:var(--c-primary)}
.topic-meta{margin-top:9px;font-size:12.5px;letter-spacing:.04em;color:var(--c-muted)}
.rail-wrap{margin:0 -24px;padding:0 24px}

/* ===== 多端场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-cell{
  border:1px solid var(--c-line);border-radius:var(--r-block);padding:28px;
  background:var(--c-surface);transition:border-color .2s ease-out,transform .2s ease-out;
}
.scene-cell:first-child,.scene-cell:last-child{grid-column:span 2}
.scene-cell:hover{border-color:rgba(242,168,29,.6);transform:translateY(-3px)}
.scene-tag{font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--c-primary)}
.scene-title{font-size:20px;font-weight:800;margin-top:12px;line-height:1.5}
.scene-text{margin-top:10px;font-size:15px;line-height:1.85;color:rgba(245,241,232,.66);max-width:540px}

/* ===== 口碑 ===== */
.quotes{max-width:880px}
.quote{padding:32px 0;border-bottom:1px solid var(--c-line)}
.quote:first-child{padding-top:0}
.quote-text{position:relative;padding-left:28px;font-size:18px;line-height:1.95;font-weight:500}
.quote-text::before{
  content:"“";position:absolute;left:0;top:-8px;font-family:var(--font-num);
  font-size:40px;line-height:1;color:var(--c-primary);
}
.quote-by{margin-top:16px;padding-left:28px;font-size:14px;letter-spacing:.04em;color:var(--c-muted)}

/* ===== 适用人群 ===== */
.audience-list{border-top:1px solid var(--c-line)}
.audience-row{
  display:grid;grid-template-columns:216px minmax(0,1fr);gap:32px;
  padding:24px 0;border-bottom:1px solid var(--c-line);align-items:baseline;
}
.audience-label{font-size:18px;font-weight:800;color:var(--c-primary)}
.audience-text{font-size:16px;line-height:1.9;color:rgba(245,241,232,.72)}

/* ===== 对比 ===== */
.compare{
  display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--c-line);
  border-radius:var(--r-block);overflow:hidden;
}
.compare-col{padding:32px}
.compare-col:first-child{background:rgba(245,241,232,.035);border-right:1px solid var(--c-line)}
.compare-head{font-size:13px;letter-spacing:.14em;font-weight:700;color:var(--c-muted);margin-bottom:22px}
.compare-col.is-us .compare-head{color:var(--c-primary)}
.compare-item{padding:16px 0;border-top:1px solid var(--c-line);font-size:15.5px;line-height:1.8}
.compare-item:first-of-type{border-top:0;padding-top:0}
.compare-item::before{content:"—";margin-right:10px;color:var(--c-muted)}
.compare-col.is-us .compare-item::before{color:var(--c-primary)}

/* ===== 资讯 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.news-card{
  display:flex;flex-direction:column;border:1px solid var(--c-line);border-radius:var(--r-block);
  overflow:hidden;background:var(--c-surface);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{border-color:var(--c-primary);transform:translateY(-4px);box-shadow:var(--shadow-dark)}
.ratio-16x9{aspect-ratio:16/9;overflow:hidden;background:#1B1B1F}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.news-card:hover .ratio-16x9 img{transform:scale(1.03)}
.news-body{padding:20px 22px 24px}
.news-kicker{font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--c-primary)}
.news-title{font-size:18px;font-weight:800;line-height:1.55;margin-top:10px;transition:color .18s ease-out}
.news-card:hover .news-title{color:var(--c-primary)}
.news-text{margin-top:10px;font-size:15px;line-height:1.85;color:rgba(245,241,232,.66)}
.news-meta{margin-top:16px;font-size:12.5px;letter-spacing:.05em;color:var(--c-muted)}

/* ===== 数据指标条 ===== */
.stat-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.stat-card{
  border:1px solid var(--c-line-dark);border-radius:var(--r-block);padding:28px;
  background:rgba(255,255,255,.62);box-shadow:var(--shadow-light);
}
.stat-value{font-family:var(--font-num);font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--c-ink-dark)}
.stat-value small{font-family:var(--font-sans);font-size:14px;font-weight:700;margin-left:6px;letter-spacing:0}
.stat-title{font-size:16px;font-weight:800;margin-top:10px}
.stat-bar{height:6px;border-radius:999px;background:rgba(20,18,14,.1);overflow:hidden;margin-top:16px}
.stat-bar i{display:block;height:100%;border-radius:999px;background:var(--c-primary)}
.stat-bar.is-accent i{background:var(--c-accent)}
.stat-bar.is-support i{background:var(--c-support)}
.stat-note{margin-top:14px;font-size:14.5px;line-height:1.8;color:rgba(20,18,14,.66)}

/* ===== 更新节奏 ===== */
.schedule{border-top:1px solid var(--c-line)}
.schedule-row{
  display:grid;grid-template-columns:132px minmax(0,1fr) auto;gap:24px;
  padding:22px 0;border-bottom:1px solid var(--c-line);align-items:center;
}
.schedule-date{font-family:var(--font-num);font-size:17px;letter-spacing:.06em;color:var(--c-primary)}
.schedule-title{font-size:16.5px;font-weight:700;line-height:1.6}
.schedule-desc{margin-top:6px;font-size:14.5px;font-weight:400;color:var(--c-muted);line-height:1.8}
.schedule-tag{
  font-size:12.5px;padding:5px 13px;border-radius:999px;
  border:1px solid var(--c-line);color:var(--c-muted);white-space:nowrap;
}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:62px;padding:18px 0;text-align:left;font-size:17px;font-weight:700;
  line-height:1.6;color:var(--c-ink);transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary)}
.faq-sign{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq-sign::before{left:0;top:8px;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px;transform:scaleY(1);transition:transform .25s ease-out}
.faq-item.is-open .faq-sign::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s cubic-bezier(.22,.61,.36,1)}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 44px 22px 0;font-size:15.5px;line-height:1.9;color:rgba(245,241,232,.72);max-width:900px}

/* ===== 品质承诺 ===== */
.promise-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.promise-item{padding:30px 26px;border-left:1px solid var(--c-line)}
.promise-item:first-child{border-left:0;padding-left:0}
.promise-badge{
  display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:700;
  color:#8FD6B6;background:rgba(31,74,58,.34);border:1px solid rgba(31,74,58,.7);
  padding:4px 10px;border-radius:4px;
}
.promise-title{font-size:18px;font-weight:800;margin-top:14px;line-height:1.5}
.promise-text{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--c-muted)}

/* ===== 底部 CTA ===== */
.cta-block{
  position:relative;border:1px solid var(--c-line);border-radius:var(--r-block);
  overflow:hidden;padding:64px 56px;
  background-image:linear-gradient(92deg,rgba(10,10,11,.95) 0%,rgba(10,10,11,.7) 62%,rgba(10,10,11,.6) 100%),
  url("/assets/images/backpic/back-5.jpg");
  background-size:cover;background-position:center;
}
.cta-title{font-size:clamp(26px,3.4vw,42px);font-weight:900;letter-spacing:-.02em;line-height:1.3;max-width:780px}
.cta-text{margin-top:16px;max-width:660px;font-size:16px;line-height:1.9;color:rgba(245,241,232,.76)}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:20px}

/* ===== 页脚 ===== */
.site-footer{background:#0A0A0B;border-top:1px solid var(--c-line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.25fr 1fr 1.2fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-text{margin-top:18px;font-size:15px;line-height:1.9;color:var(--c-muted);max-width:380px}
.footer-head{font-size:13px;letter-spacing:.14em;font-weight:700;color:var(--c-ink);margin-bottom:18px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:15px;color:var(--c-muted)}
.footer-links a:hover{color:var(--c-primary)}
.form-field{margin-bottom:16px}
.form-label{display:block;font-size:13px;letter-spacing:.08em;color:var(--c-muted);margin-bottom:8px}
.form-input{
  width:100%;padding:12px 14px;background:#141416;border:1px solid var(--c-line);
  border-radius:6px;color:var(--c-ink);font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.form-input::placeholder{color:#6C665E}
.form-input:focus{outline:none;border-color:var(--c-primary);box-shadow:inset 0 0 0 2px rgba(242,168,29,.24)}
.form-hint{margin-top:10px;font-size:12.5px;color:var(--c-muted);line-height:1.7}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#7E7870;
}

/* ===== 进入视口动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.06s}
.reveal[data-delay="2"]{transition-delay:.12s}
.reveal[data-delay="3"]{transition-delay:.18s}
.reveal[data-delay="4"]{transition-delay:.24s}
.reveal[data-delay="5"]{transition-delay:.3s}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .main-nav{gap:22px}
  .nav-link{font-size:14.5px}
  .hero{padding-top:124px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-poster{justify-self:start;max-width:280px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 28px}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 0}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-cell:first-child,.scene-cell:last-child{grid-column:span 2}
  .promise-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .promise-item:nth-child(3){border-left:0;padding-left:0}
  .promise-item{border-top:1px solid var(--c-line)}
  .promise-item:first-child,.promise-item:nth-child(2){border-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .stat-strip{grid-template-columns:1fr;gap:18px}
  .schedule-row{grid-template-columns:112px minmax(0,1fr) auto;gap:18px}
}
@media (max-width:820px){
  .main-nav,.nav-cta{display:none}
  .menu-toggle{display:flex}
  .pain-grid{grid-template-columns:1fr;column-gap:0}
  .pain-item:nth-child(odd),.pain-item:nth-child(even){grid-column:1}
  .solution-row{grid-template-columns:1fr;gap:16px;padding:28px 0}
  .audience-row{grid-template-columns:1fr;gap:8px}
  .compare{grid-template-columns:1fr}
  .compare-col:first-child{border-right:0;border-bottom:1px solid var(--c-line)}
  .news-grid{grid-template-columns:1fr}
  .topic-card.is-wide{flex:0 0 290px}
  .cta-block{padding:46px 28px}
  .section{padding:calc(var(--sp-section) * .8) 0}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .brand-text{font-size:15.5px}
  .brand-mark{width:28px;height:28px}
  .hero{padding-top:108px}
  .hero-title{font-size:clamp(32px,8.4vw,44px)}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:22px 26px}
  .metrics{grid-template-columns:1fr}
  .metric{border-left:0;padding:0 0 26px;border-bottom:1px solid var(--c-line)}
  .metric:first-child{padding-top:0}
  .metric:last-child{border-bottom:0;padding-bottom:0}
  .scene-grid{grid-template-columns:1fr}
  .scene-cell:first-child,.scene-cell:last-child{grid-column:span 1}
  .steps{grid-template-columns:1fr;gap:30px}
  .promise-strip{grid-template-columns:1fr}
  .promise-item{border-left:0;padding-left:0;padding-right:0}
  .promise-item:nth-child(2){border-top:1px solid var(--c-line)}
  .promise-item:nth-child(3){border-top:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:1fr;gap:38px}
  .schedule-row{grid-template-columns:1fr;gap:8px}
  .schedule-tag{justify-self:start}
  .cta-actions .btn{width:100%}
  .quote-text{font-size:16.5px}
  .faq-q{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
 --c-bg:#0A0A0B;
 --c-surface:#141416;
 --c-paper:#F6F2E9;
 --c-ink:#F5F1E8;
 --c-ink-dark:#14120E;
 --c-muted:#A39C90;
 --c-primary:#F2A81D;
 --c-primary-deep:#B87509;
 --c-accent:#E2542A;
 --c-support:#1F4A3A;
 --c-line:rgba(245,241,232,0.14);
 --c-line-dark:rgba(20,18,14,0.12);
 --r-card:8px;
 --r-block:10px;
 --r-btn:6px;
 --sp-section:clamp(52px,7vw,110px);
 --shadow-dark:0 8px 28px rgba(0,0,0,.5);
 --shadow-light:0 6px 20px rgba(20,18,14,.08);
 --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
 --font-num:"Oswald","Bebas Neue",sans-serif;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 background:var(--c-bg);
 color:var(--c-ink);
 font-family:var(--font-sans);
 font-size:16.5px;
 line-height:1.9;
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
*,*::before,*::after{box-sizing:border-box}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ============ 通用排版 ============ */
.section{padding:var(--sp-section) 0;position:relative}
.section--paper{background:var(--c-paper);color:var(--c-ink-dark)}
.section--tight{padding-top:calc(var(--sp-section) * .7)}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.14em;
 color:var(--c-primary);font-weight:600;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);display:block;flex-shrink:0}
.section--paper .eyebrow{color:var(--c-primary-deep)}
.section--paper .eyebrow::before{background:var(--c-primary-deep)}
.section-head{
 display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
 gap:22px;margin-bottom:44px;padding-bottom:22px;border-bottom:1px solid var(--c-line);
}
.section--paper .section-head{border-bottom-color:var(--c-line-dark)}
.section-head .head-text{max-width:780px}
.section-title{font-size:clamp(26px,3.2vw,42px);font-weight:900;letter-spacing:-.02em;line-height:1.26;margin-top:14px}
.section-desc{margin-top:14px;font-size:16px;line-height:1.9;color:rgba(245,241,232,.7)}
.section--paper .section-desc{color:rgba(20,18,14,.66)}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:14px 28px;border-radius:var(--r-btn);font-size:15.5px;font-weight:700;letter-spacing:.02em;
 border:1px solid transparent;
 transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--c-primary);color:#14120E}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(226,84,42,.3)}
.btn-ghost{border-color:rgba(245,241,232,.5);color:var(--c-ink);background:transparent}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-sm{padding:11px 22px;font-size:14.5px}
.text-link{position:relative;display:inline-block;font-weight:700;color:var(--c-primary)}
.text-link::after{
 content:"";position:absolute;left:0;bottom:-3px;width:100%;height:2px;background:var(--c-primary);
 transform:scaleX(0);transform-origin:left;transition:transform .25s ease-out;
}
.text-link:hover::after{transform:scaleX(1)}
a.tlink:hover{color:var(--c-primary)}

/* ============ 导航 ============ */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:60;height:72px;
 border-bottom:1px solid transparent;
 transition:height .25s ease,background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
 height:60px;background:rgba(10,10,11,.92);border-bottom-color:var(--c-line);
 backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;color:var(--c-primary);flex-shrink:0}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;color:var(--c-ink)}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
 position:relative;font-size:15px;font-weight:500;padding:8px 0;
 color:rgba(245,241,232,.78);transition:color .16s ease-out;white-space:nowrap;
}
.nav-link::after{
 content:"";position:absolute;left:50%;bottom:0;width:100%;height:2px;background:var(--c-primary);
 transform:translateX(-50%) scaleX(0);transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-cta{margin-left:6px}
.menu-toggle{
 display:none;width:42px;height:42px;align-items:center;justify-content:center;
 border:1px solid var(--c-line);border-radius:6px;color:var(--c-ink);
}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.drawer-scrim{position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:70;opacity:0;pointer-events:none;transition:opacity .3s ease}
.drawer-scrim.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
 position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
 background:#0F0F11;border-left:1px solid var(--c-line);padding:26px 24px 34px;
 transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);
 overflow-y:auto;display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}
.drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:6px;color:var(--c-ink);font-size:18px;line-height:1}
.drawer-link{padding:15px 0;border-bottom:1px solid var(--c-line);font-size:16px;font-weight:600;color:rgba(245,241,232,.85)}
.drawer-link.is-active{color:var(--c-primary)}
.drawer-link:hover{color:var(--c-primary)}
.drawer-cta{margin-top:26px}

/* ============ 分类头部条带 ============ */
.cat-band{
 position:relative;overflow:hidden;margin-top:0;
 padding:calc(72px + clamp(34px,5vw,58px)) 0 clamp(36px,4.6vw,58px);
 background:#0C0C0E;
 border-bottom:1px solid var(--c-line);
}
.cat-band::before{
 content:"";position:absolute;inset:0;
 background:url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
 opacity:.2;filter:saturate(.75);
}
.cat-band::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(10,10,11,.86) 0%,rgba(10,10,11,.94) 62%,rgba(10,10,11,1) 100%);
}
.band-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.65fr) minmax(260px,.85fr);gap:44px;align-items:end}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;letter-spacing:.06em;color:rgba(245,241,232,.55)}
.breadcrumb .sep{color:rgba(245,241,232,.3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current]{color:var(--c-primary)}
.cat-title{
 font-size:clamp(30px,4.4vw,54px);font-weight:900;letter-spacing:-.02em;line-height:1.22;
 margin-top:18px;max-width:20em;
}
.cat-title em{font-style:normal;color:var(--c-primary)}
.cat-lead{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(245,241,232,.72);max-width:46em}
.stat-card{
 background:rgba(20,20,22,.86);border:1px solid var(--c-line);border-radius:var(--r-block);
 padding:22px 22px 8px;box-shadow:var(--shadow-dark);
}
.stat-card .stat-head{font-size:12.5px;letter-spacing:.14em;color:var(--c-primary);font-weight:600;margin-bottom:12px}
.stat-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--c-line)}
.stat-row:last-child{border-bottom:0}
.stat-label{font-size:14px;color:rgba(245,241,232,.66)}
.stat-value{font-family:var(--font-num);font-size:22px;font-weight:600;letter-spacing:.01em;color:var(--c-ink)}
.stat-value small{font-family:var(--font-sans);font-size:13px;font-weight:600;color:var(--c-muted);margin-left:5px}

/* ============ 概览要点 ============ */
.overview-list{border-top:1px solid var(--c-line)}
.overview-item{
 display:grid;grid-template-columns:76px minmax(0,1fr) minmax(0,1.15fr);gap:26px;align-items:start;
 padding:30px 0;border-bottom:1px solid var(--c-line);
}
.overview-item .ov-num{font-family:var(--font-num);font-size:26px;color:var(--c-primary);line-height:1.3}
.overview-item h3{font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.5}
.overview-item p{font-size:15.5px;line-height:1.9;color:rgba(245,241,232,.68)}

/* ============ 筛选条 ============ */
.filter-bar{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
 padding:18px 20px;border:1px solid var(--c-line);border-radius:var(--r-block);
 background:rgba(20,20,22,.72);margin-bottom:36px;
}
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{
 padding:8px 16px;border-radius:999px;border:1px solid var(--c-line);
 font-size:14px;color:rgba(245,241,232,.75);background:transparent;
 transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.chip:hover{color:var(--c-primary);border-color:var(--c-primary)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#14120E;font-weight:700}
.sort-wrap{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(245,241,232,.62)}
.sort-select{
 appearance:none;-webkit-appearance:none;
 padding:9px 38px 9px 14px;border-radius:var(--r-btn);border:1px solid var(--c-line);
 background:rgba(10,10,11,.7);color:var(--c-ink);font-size:14px;
 background-image:linear-gradient(45deg,transparent 50%,var(--c-muted) 50%),linear-gradient(135deg,var(--c-muted) 50%,transparent 50%);
 background-position:calc(100% - 20px) 52%,calc(100% - 14px) 52%;
 background-size:6px 6px,6px 6px;background-repeat:no-repeat;
 transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sort-select:focus{border-color:var(--c-primary);box-shadow:inset 0 0 0 1px var(--c-primary);outline:none}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}
.poster-card{display:flex;flex-direction:column;gap:14px}
.poster-media{
 position:relative;aspect-ratio:2/3;border-radius:var(--r-card);overflow:hidden;
 border:1px solid var(--c-line);background:linear-gradient(160deg,#1B1B1E,#111113);
}
.poster-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.poster-card:hover .poster-media img{transform:scale(1.03)}
.poster-card:hover .poster-media{border-color:var(--c-primary)}
.poster-badge{
 position:absolute;left:10px;top:10px;padding:4px 10px;border-radius:4px;
 background:rgba(10,10,11,.78);border:1px solid rgba(245,241,232,.22);
 font-size:12px;letter-spacing:.06em;color:var(--c-ink);
}
.poster-title{font-size:17px;font-weight:800;line-height:1.55;letter-spacing:-.01em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster-title a:hover{color:var(--c-primary)}
.poster-sum{font-size:14.5px;line-height:1.8;color:rgba(245,241,232,.63);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster-meta{font-size:12.5px;letter-spacing:.06em;color:var(--c-muted);border-top:1px solid var(--c-line);padding-top:11px}
.more-wrap{margin-top:44px;display:flex;justify-content:center}
.more-link{
 display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15.5px;color:var(--c-primary);
 border-bottom:2px solid rgba(242,168,29,.35);padding-bottom:5px;transition:border-color .2s ease-out,color .2s ease-out;
}
.more-link:hover{border-bottom-color:var(--c-primary)}
.more-link .arrow{transition:transform .2s ease-out}
.more-link:hover .arrow{transform:translateX(4px)}

/* ============ 本类精选 ============ */
.feature-list{display:flex;flex-direction:column;gap:26px}
.feature-card{
 display:grid;grid-template-columns:minmax(0,40%) minmax(0,1fr);gap:0;
 border:1px solid var(--c-line-dark);border-radius:var(--r-block);overflow:hidden;background:#fff;
 box-shadow:var(--shadow-light);
 transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,18,14,.14)}
.feature-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDE7DA}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body{padding:28px 30px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.feature-tag{
 align-self:flex-start;font-size:12.5px;letter-spacing:.1em;color:#fff;background:var(--c-support);
 padding:5px 12px;border-radius:4px;
}
.feature-body h3{font-size:22px;font-weight:900;letter-spacing:-.01em;line-height:1.45;color:var(--c-ink-dark)}
.feature-body h3 a:hover{color:var(--c-primary-deep)}
.feature-body p{font-size:15.5px;line-height:1.9;color:rgba(20,18,14,.68)}
.feature-meta{font-size:13px;letter-spacing:.06em;color:rgba(20,18,14,.5);border-top:1px solid var(--c-line-dark);padding-top:13px}

/* ============ 数据概览 ============ */
.data-strip{
 display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
 border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.data-cell{padding:34px 30px;border-right:1px solid var(--c-line)}
.data-cell:last-child{border-right:0}
.data-num{font-family:var(--font-num);font-size:clamp(34px,4.2vw,52px);font-weight:700;letter-spacing:-.01em;color:var(--c-primary);line-height:1.1}
.data-num span{font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--c-ink);margin-left:8px;letter-spacing:0}
.data-label{margin-top:10px;font-size:15.5px;font-weight:700}
.data-note{margin-top:8px;font-size:14px;color:rgba(245,241,232,.6);line-height:1.85}
.data-foot{margin-top:22px;font-size:14px;color:rgba(245,241,232,.55)}

/* ============ FAQ ============ */
.faq-list{max-width:920px;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
 width:100%;display:flex;align-items:center;justify-content:space-between;gap:22px;
 min-height:62px;padding:16px 0;text-align:left;font-size:17px;font-weight:700;line-height:1.6;color:var(--c-ink);
 transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform .26s ease-out}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:0;top:8px;width:18px;height:2px;background:var(--c-primary)}
.faq-icon::after{transform:rotate(90deg);transition:opacity .2s ease-out}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-a p{padding:0 60px 20px 0;margin-top:16px;font-size:15.5px;line-height:1.9;color:rgba(245,241,232,.7)}
.faq-item.is-open .faq-q{color:var(--c-primary)}

/* ============ 观看指引 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}
.step-item{position:relative;padding-top:26px;border-top:2px solid var(--c-primary)}
.step-num{font-family:var(--font-num);font-size:clamp(48px,6vw,76px);font-weight:700;line-height:1;color:rgba(245,241,232,.16);letter-spacing:-.02em}
.step-item h3{margin-top:14px;font-size:20px;font-weight:800;letter-spacing:-.01em}
.step-item p{margin-top:12px;font-size:15.5px;line-height:1.9;color:rgba(245,241,232,.68)}

/* ============ 收尾 CTA ============ */
.cta-block{
 border:1px solid var(--c-line);border-radius:var(--r-block);
 background:linear-gradient(135deg,rgba(20,20,22,.96),rgba(31,74,58,.42));
 padding:clamp(34px,4.4vw,56px);
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-block h2{font-size:clamp(23px,2.8vw,34px);font-weight:900;letter-spacing:-.02em;line-height:1.35;max-width:24em}
.cta-block p{margin-top:12px;font-size:15.5px;color:rgba(245,241,232,.68);max-width:36em}

/* ============ 页脚 ============ */
.site-footer{background:#08080A;border-top:1px solid var(--c-line);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr) minmax(0,1.15fr);gap:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-brand .brand-mark{width:32px;height:32px;color:var(--c-primary)}
.footer-brand .brand-text{font-size:17px;font-weight:800}
.footer-text{margin-top:16px;font-size:14.5px;line-height:1.9;color:rgba(245,241,232,.6);max-width:34em}
.footer-head{font-size:14px;font-weight:800;letter-spacing:.08em;color:rgba(245,241,232,.9);margin-bottom:16px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14.5px;color:rgba(245,241,232,.62)}
.footer-links a:hover{color:var(--c-primary)}
.footer-form{margin-top:4px}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.form-label{font-size:13.5px;color:rgba(245,241,232,.7)}
.form-input{
 width:100%;padding:12px 14px;border-radius:var(--r-btn);
 background:rgba(10,10,11,.72);border:1px solid var(--c-line);color:var(--c-ink);font-size:14.5px;
 transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.form-input::placeholder{color:rgba(245,241,232,.35)}
.form-input:focus{border-color:var(--c-primary);box-shadow:inset 0 0 0 2px rgba(242,168,29,.28);outline:none}
.form-hint{margin-top:12px;font-size:13px;line-height:1.8;color:rgba(245,241,232,.45)}
.footer-bottom{
 margin-top:46px;padding-top:20px;border-top:1px solid var(--c-line);
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
 font-size:13.5px;color:rgba(245,241,232,.45);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 .reveal{opacity:1;transform:none;transition:none}
 *{animation:none !important;transition:none !important}
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .main-nav{display:none}
 .menu-toggle{display:inline-flex}
 .band-grid{grid-template-columns:minmax(0,1fr);gap:30px;align-items:start}
 .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
 .overview-item{grid-template-columns:60px minmax(0,1fr);gap:20px}
 .overview-item p{grid-column:2}
 .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px}
}
@media (max-width:768px){
 .container{padding-left:20px;padding-right:20px}
 .cat-band{padding-top:calc(64px + 34px)}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
 .feature-card{grid-template-columns:minmax(0,1fr)}
 .feature-media{aspect-ratio:16/9}
 .feature-body{padding:24px 22px}
 .data-strip{grid-template-columns:minmax(0,1fr)}
 .data-cell{border-right:0;border-bottom:1px solid var(--c-line);padding:26px 4px}
 .data-cell:last-child{border-bottom:0}
 .step-grid{grid-template-columns:minmax(0,1fr);gap:26px}
 .faq-a p{padding-right:30px}
 .cta-block{padding:30px 24px}
 .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px}
 .section-head{margin-bottom:34px}
}
@media (max-width:520px){
 .poster-title{font-size:15.5px}
 .poster-sum{font-size:13.5px}
 .stat-card{padding:18px 18px 6px}
 .cat-title{font-size:clamp(26px,7vw,34px)}
 .filter-bar{padding:16px}
 .btn{padding:12px 22px}
}