/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#0B1410;
  --panel:#12201A;
  --panel-a:#16281F;
  --panel-b:#0F1B15;
  --green:#3FBF7F;
  --green-deep:#2E7D5B;
  --mint:#7DE0A8;
  --pink:#FF8FB1;
  --pink-soft:#FF9FC0;
  --purple:#B98BE0;
  --text:#EAF6EF;
  --text-2:#A9C4B6;
  --text-3:#6E8B7D;
  --link:#7DE0A8;
  --link-hover:#FF9FB8;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --grad:linear-gradient(135deg,#3FBF7F 0%,#7DE0A8 38%,#FF9FC0 100%);
  --grad-soft:linear-gradient(135deg,rgba(63,191,127,.16) 0%,rgba(255,159,192,.10) 100%);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-hover:0 0 0 1px rgba(63,191,127,.35),0 26px 60px -22px rgba(63,191,127,.30);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(63,191,127,.10),transparent 62%),
    radial-gradient(760px 460px at 92% 6%,rgba(255,143,177,.07),transparent 60%);
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--link-hover)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:8px}

/* ===================== 容器与板块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:linear-gradient(180deg,#0F1B15 0%,#0B1410 100%)}

/* ===================== 通用组件 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#07231A}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 34px -14px rgba(63,191,127,.65);color:#07231A}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--green);color:var(--link)}
.btn-ghost:active{transform:translateY(0)}
.btn-lg{height:52px;padding:0 32px}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--link);
  background:none;border:none;padding:0;cursor:pointer;position:relative;font-weight:600;
}
.btn-text::after{content:"";position:absolute;left:0;right:20px;bottom:-3px;height:2px;border-radius:2px;background:var(--grad)}
.btn-text::before{content:"→";font-size:13px;order:2;transition:transform .18s ease}
.btn-text:hover::before{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.10);
  font-size:13px;color:var(--text-2);white-space:nowrap;
}
.badge b{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--mint);letter-spacing:0}
.badge.pink b{color:var(--pink)}
.badge.purple b{color:var(--purple)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}

.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);white-space:nowrap;
}
.chip-pink{color:#FFC2D5;background:rgba(255,143,177,.10);border-color:rgba(255,143,177,.28)}
.chip-purple{color:#D9BDF2;background:rgba(185,139,224,.10);border-color:rgba(185,139,224,.28)}
.chip-green{color:#A9EFC9;background:rgba(63,191,127,.10);border-color:rgba(63,191,127,.28)}

.card{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}

.ratio-43{aspect-ratio:4/3;overflow:hidden;border-radius:20px;background:#0F1B15}
.ratio-32{aspect-ratio:3/2;overflow:hidden;border-radius:20px;background:#0F1B15}
.ratio-169{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-lg);background:#0F1B15}
.ratio-11{aspect-ratio:1/1;overflow:hidden;border-radius:20px;background:#0F1B15}
.ratio-43 img,.ratio-32 img,.ratio-169 img,.ratio-11 img{width:100%;height:100%;object-fit:cover}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head-main{max-width:820px}
.sec-title{position:relative;padding-left:16px;font-size:28px;line-height:1.36}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--grad);
}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.8}
.sec-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);font-size:13px;color:var(--mint);
  background:rgba(63,191,127,.10);border:1px solid rgba(63,191,127,.28);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}

.dot-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;margin-top:10px}
.dot-list li::before{
  content:"";flex:0 0 7px;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--grad);
}

.divider{height:1px;background:var(--line-soft);border:0;margin:0}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,20,16,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:background .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{background:#0B1410;box-shadow:0 8px 24px -12px rgba(0,0,0,.6)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:10px 10px 10px 3px;background:var(--grad);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);flex:0 0 26px;
}
.brand-name{font-size:19px;font-weight:700;color:var(--text);letter-spacing:.02em}
.brand-sub{
  font-size:12px;color:var(--text-3);padding-left:10px;
  border-left:1px solid rgba(255,255,255,.12);line-height:1;
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:5px;height:64px;
  padding:0 13px;font-size:15px;color:var(--text-2);border-radius:12px;
}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;background:var(--grad);
}
.caret{width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.7;transition:transform .18s ease}
.nav-item:hover .caret{transform:rotate(45deg) translateY(0)}
.nav-panel{
  position:absolute;top:calc(100% - 8px);left:50%;
  transform:translate(-50%,6px);
  width:300px;padding:16px;border-radius:20px;
  background:#12201A;border:1px solid rgba(255,255,255,.08);
  box-shadow:0 26px 54px -22px rgba(0,0,0,.85);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .12s ease-out,transform .12s ease-out,visibility .12s ease-out;
}
.nav-item:hover .nav-panel,.nav-item:focus-within .nav-panel{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.panel-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;margin:0 0 8px}
.panel-label+.panel-entry{margin-top:0}
.panel-links{display:flex;flex-direction:column;gap:2px;margin-bottom:14px}
.panel-links a{font-size:14px;color:var(--text-2);padding:6px 8px;border-radius:10px;transition:background .16s ease,color .16s ease}
.panel-links a:hover{background:rgba(63,191,127,.10);color:var(--link)}
.panel-entry{display:flex;align-items:center;gap:10px;padding:6px;border-radius:12px;transition:background .16s ease}
.panel-entry:hover{background:rgba(255,255,255,.05)}
.panel-entry img{width:40px;height:40px;flex:0 0 40px;border-radius:12px;object-fit:cover}
.panel-entry-txt{display:flex;flex-direction:column;min-width:0}
.panel-entry-txt span{font-size:13px;color:var(--text);line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.panel-entry-txt em{font-style:normal;font-size:11px;color:var(--text-3);font-family:var(--mono)}
.panel-sep{height:1px;background:var(--line-soft);margin:12px 0}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative}
.search-box input{
  width:190px;height:40px;border-radius:var(--r-pill);
  background:#0F1B15;border:1px solid var(--line-strong);
  padding:0 16px;font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,width .18s ease;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 2px rgba(63,191,127,.20)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===================== Hero ===================== */
.hero{position:relative;padding:72px 0 84px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url(/assets/images/backpic/back-1.jpg);
  background-size:cover;background-position:center;
  opacity:.20;filter:saturate(.9);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,20,16,.55) 0%,rgba(11,20,16,.90) 62%,#0B1410 100%);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:40px;line-height:1.28;margin:20px 0 0;letter-spacing:.01em}
.hero h1 em{
  font-style:normal;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:620px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero .badge-row{margin-top:32px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compare-item{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--panel-b);
  box-shadow:var(--shadow);
}
.compare-item img{width:100%;height:100%;object-fit:cover;aspect-ratio:3/4;transition:transform .22s ease}
.compare-item:hover img{transform:scale(1.02)}
.compare-tag{
  position:absolute;top:12px;left:12px;height:26px;padding:0 12px;
  display:inline-flex;align-items:center;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;backdrop-filter:blur(6px);
}
.compare-tag.before{background:rgba(255,255,255,.12);color:var(--text);border:1px solid rgba(255,255,255,.18)}
.compare-tag.after{background:rgba(255,143,177,.20);color:#FFD3E1;border:1px solid rgba(255,143,177,.36)}
.compare-cap{
  position:absolute;left:0;right:0;bottom:0;padding:40px 14px 14px;
  background:linear-gradient(180deg,transparent,rgba(11,20,16,.94));
  font-size:13px;color:var(--text-2);line-height:1.6;
}
.hero-float{
  position:absolute;left:-18px;bottom:56px;display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:var(--r-pill);
  background:rgba(11,20,16,.90);border:1px solid rgba(63,191,127,.35);
  font-size:13px;color:var(--text);box-shadow:0 16px 34px -16px rgba(0,0,0,.9);
}
.hero-float b{font-family:var(--mono);font-size:15px;color:var(--mint)}

/* ===================== 原理速览条 ===================== */
.principle-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
}
.principle-cell{padding:28px 26px;border-right:1px solid var(--line-soft);position:relative}
.principle-cell:last-child{border-right:0}
.principle-cell::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.principle-cell:hover::before{transform:scaleX(1)}
.principle-idx{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.08em}
.principle-cell h3{font-size:19px;margin:10px 0 8px}
.principle-cell p{font-size:14px;color:var(--text-2);line-height:1.72;min-height:72px}
.principle-cell .badge{margin-top:14px}

/* ===================== 功能分组 1大2小 ===================== */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}
.feature-main{
  display:flex;flex-direction:column;gap:20px;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:24px;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.feature-main:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.feature-main h3{font-size:22px}
.feature-main p{color:var(--text-2);font-size:15px}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:20px}
.feature-mini{
  display:flex;flex-direction:column;gap:10px;justify-content:center;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.feature-mini:hover{transform:translateY(-3px);border-color:rgba(185,139,224,.35);box-shadow:0 0 0 1px rgba(185,139,224,.28),0 26px 60px -22px rgba(185,139,224,.25)}
.feature-mini h3{font-size:19px}
.feature-mini p{color:var(--text-2);font-size:14px;line-height:1.72}
.feature-icon{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(63,191,127,.12);border:1px solid rgba(63,191,127,.3);
}
.feature-icon svg{width:20px;height:20px;stroke:var(--mint);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.feature-icon.purple{background:rgba(185,139,224,.12);border-color:rgba(185,139,224,.3)}
.feature-icon.purple svg{stroke:var(--purple)}

/* ===================== 使用场景四宫格 ===================== */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;gap:14px;
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.scene-card h3{font-size:17px}
.scene-card p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.scene-head{display:flex;align-items:center;justify-content:space-between;gap:8px}

/* ===================== 养护面板演示 ===================== */
.demo-wrap{
  display:grid;grid-template-columns:1.25fr 1fr;gap:28px;align-items:stretch;
  background:linear-gradient(180deg,#132219 0%,#0C1711 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:24px;
  box-shadow:var(--shadow);
}
.demo-stage{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:340px}
.demo-stage img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.demo-stage::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(11,20,16,.85) 100%);
}
.demo-stage-badges{position:absolute;top:16px;left:16px;display:flex;gap:8px;flex-wrap:wrap;z-index:2}
.demo-stage-note{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  font-size:14px;color:var(--text-2);
}
.demo-steps{display:flex;flex-direction:column;gap:12px;justify-content:center}
.demo-step{
  display:flex;gap:14px;padding:16px;border-radius:var(--r-md);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:border-color .18s ease,background .18s ease;
}
.demo-step:hover{border-color:rgba(63,191,127,.35);background:rgba(63,191,127,.05)}
.demo-step-idx{
  flex:0 0 34px;width:34px;height:34px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;color:#07231A;background:var(--grad);
}
.demo-step h3{font-size:16px;margin-bottom:4px}
.demo-step p{font-size:13.5px;color:var(--text-2);line-height:1.68}

/* ===================== 成功案例错位 ===================== */
.case-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:20px}
.case-wide{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:22px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:18px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.case-wide:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.case-wide h3{font-size:21px;margin-top:4px}
.case-wide p{font-size:14.5px;color:var(--text-2);line-height:1.78}
.case-stack{display:grid;grid-template-rows:1fr 1fr;gap:20px}
.case-narrow{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;
  box-shadow:var(--shadow);display:flex;gap:16px;align-items:center;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.case-narrow:hover{transform:translateY(-3px);border-color:rgba(255,143,177,.35);box-shadow:0 0 0 1px rgba(255,143,177,.28),0 26px 60px -22px rgba(255,143,177,.22)}
.case-narrow .ratio-11{flex:0 0 96px;width:96px}
.case-narrow h3{font-size:16px;margin-bottom:4px}
.case-narrow p{font-size:13.5px;color:var(--text-2);line-height:1.6}
.case-narrow .badge{margin-top:8px;height:26px;font-size:12px;padding:0 10px}

/* ===================== 套餐价格 ===================== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.price-card{
  position:relative;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:26px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.price-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.price-card.featured{
  transform:translateY(-8px);
  border-color:transparent;
  background:
    linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%) padding-box,
    var(--grad) border-box;
  border:1px solid transparent;
  box-shadow:0 28px 60px -24px rgba(63,191,127,.45);
}
.price-card.featured:hover{transform:translateY(-11px)}
.price-flag{
  position:absolute;top:-12px;right:22px;height:26px;padding:0 14px;
  display:inline-flex;align-items:center;border-radius:var(--r-pill);
  background:var(--grad);color:#07231A;font-size:12px;font-weight:700;
}
.price-name{font-size:19px}
.price-sub{font-size:13px;color:var(--text-3)}
.price-value{display:flex;align-items:baseline;gap:6px;margin-top:4px}
.price-value b{font-family:var(--mono);font-size:36px;font-weight:700;color:var(--pink);letter-spacing:-.01em}
.price-value span{font-size:13px;color:var(--text-3)}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;margin-top:10px}
.price-list li::before{
  content:"";flex:0 0 14px;width:14px;height:14px;margin-top:6px;border-radius:50%;
  background:rgba(63,191,127,.14);border:1px solid rgba(63,191,127,.5);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237DE0A8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size:9px 9px;background-position:center;background-repeat:no-repeat;
}
.price-card .btn{margin-top:auto;width:100%}

/* ===================== 评价墙 瀑布两列 ===================== */
.review-wall{columns:2;column-gap:20px}
.review-card{
  break-inside:avoid;margin-bottom:20px;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  box-shadow:var(--shadow);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(185,139,224,.32);box-shadow:0 0 0 1px rgba(185,139,224,.22),0 26px 60px -22px rgba(185,139,224,.22)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;flex:0 0 40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#07231A;background:var(--grad);
}
.review-meta{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.review-meta strong{font-size:14.5px;font-weight:600}
.review-meta em{font-style:normal;font-size:12px;color:var(--text-3);font-family:var(--mono)}
.review-stars{margin-left:auto;display:flex;gap:2px}
.review-stars i{width:11px;height:11px;display:block;background:var(--grad);clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}
.review-card p{font-size:14.5px;color:var(--text-2);line-height:1.78}

/* ===================== 数据墙 ===================== */
.data-wall{
  background:linear-gradient(180deg,#16281F 0%,#0C1711 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:56px 40px;box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.data-wall::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:var(--grad);opacity:.08;filter:blur(10px);
}
.data-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;position:relative;z-index:1}
.data-cell{text-align:center}
.data-cell b{
  display:block;font-family:var(--mono);font-size:40px;font-weight:700;line-height:1.15;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.data-cell span{display:block;margin-top:8px;font-size:13px;color:var(--text-2)}
.data-note{margin-top:28px;text-align:center;font-size:12.5px;color:var(--text-3);position:relative;z-index:1}

/* ===================== 资讯列表 ===================== */
.news-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:start}
.news-feature{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:20px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.news-feature:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.news-feature h3{font-size:21px;line-height:1.45}
.news-feature p{font-size:14.5px;color:var(--text-2);line-height:1.78}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);font-family:var(--mono)}
.news-list{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%)}
.news-item{display:flex;gap:14px;padding:16px;border-bottom:1px solid var(--line-soft);align-items:center;transition:background .16s ease}
.news-item:last-child{border-bottom:0}
.news-item:hover{background:rgba(63,191,127,.05)}
.news-item .thumb{width:96px;height:72px;flex:0 0 96px;border-radius:14px;overflow:hidden;background:#0F1B15}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-item-body{min-width:0;display:flex;flex-direction:column;gap:6px}
.news-item-body h3{
  font-size:15px;font-weight:600;line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-item-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-3);font-family:var(--mono)}

/* ===================== 订阅 CTA ===================== */
.cta-band{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);padding:52px 44px;
  background:var(--panel);box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;background:var(--grad);opacity:.15;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:28px;line-height:1.35}
.cta-inner p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-band .badge{margin-top:20px;position:relative;z-index:1}

/* ===================== 图鉴横滑 ===================== */
.scroll-rail-wrap{position:relative}
.scroll-rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:196px;gap:16px;
  overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;
  scrollbar-width:thin;scrollbar-color:rgba(63,191,127,.4) transparent;
}
.scroll-rail::-webkit-scrollbar{height:6px}
.scroll-rail::-webkit-scrollbar-thumb{background:rgba(63,191,127,.35);border-radius:99px}
.scroll-rail::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:99px}
.rail-card{
  scroll-snap-align:start;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:14px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.rail-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.rail-card h3{font-size:16px}
.rail-card p{font-size:13px;color:var(--text-2);line-height:1.6;flex:1}
.rail-link{font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:5px}
.rail-link::after{content:"→";font-size:12px;transition:transform .18s ease}
.rail-link:hover::after{transform:translateX(3px)}
.rail-fade{
  position:absolute;right:0;top:0;bottom:18px;width:64px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(11,20,16,.92));
}

/* ===================== 新手三步 ===================== */
.steps-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.step-card{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;
  box-shadow:var(--shadow);position:relative;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.step-num{
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.12em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.step-card h3{font-size:19px;margin:12px 0 10px}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.75;min-height:74px}
.step-card .badge{margin-top:14px}

/* ===================== 养护日历 ===================== */
.calendar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cal-card{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.cal-card:hover{transform:translateY(-3px);border-color:rgba(255,143,177,.32);box-shadow:0 0 0 1px rgba(255,143,177,.2),0 26px 60px -22px rgba(255,143,177,.2)}
.cal-month{font-family:var(--mono);font-size:13px;color:var(--pink);letter-spacing:.08em}
.cal-card h3{font-size:17px}
.cal-card p{font-size:14px;color:var(--text-2);line-height:1.72;flex:1}

/* ===================== FAQ ===================== */
.faq-wrap{max-width:900px;margin:0 auto}
details.faq{
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:20px;
  padding:0 20px;margin-bottom:12px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
details.faq:hover{border-color:rgba(63,191,127,.28)}
details.faq[open]{border-color:rgba(63,191,127,.35);box-shadow:0 18px 40px -22px rgba(63,191,127,.35)}
details.faq summary{
  height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  cursor:pointer;font-size:16px;font-weight:600;color:var(--text);list-style:none;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"";width:11px;height:11px;flex:0 0 11px;
  border-right:2px solid var(--link);border-bottom:2px solid var(--link);
  transform:rotate(45deg);transition:transform .2s ease;
}
details.faq[open] summary::after{transform:rotate(-135deg)}
.faq-body{padding:0 0 20px;font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:780px}

/* ===================== 收尾 CTA 条 ===================== */
.closing-bar{
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:26px 32px;background:linear-gradient(180deg,#132219 0%,#0C1711 100%);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.closing-bar h2{font-size:20px}
.closing-bar p{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ===================== 页脚 ===================== */
.site-footer{
  margin-top:24px;
  background:#0B1410;
  border-top:1px solid var(--line-soft);
  padding:56px 0 0;
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.75;max-width:320px}
.footer-brand .badge-row{margin-top:18px}
.footer-col h3{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--link)}
.subscribe-form{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.subscribe-form label{font-size:13px;color:var(--text-3)}
.subscribe-row{display:flex;gap:10px}
.subscribe-row input{
  flex:1;height:44px;border-radius:var(--r-pill);
  background:#0F1B15;border:1px solid var(--line-strong);
  padding:0 18px;font-size:14px;color:var(--text);min-width:0;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.subscribe-row input::placeholder{color:var(--text-3)}
.subscribe-row input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 2px rgba(63,191,127,.20)}
.subscribe-row .btn{height:44px;padding:0 22px;font-size:14px}
.form-hint{font-size:13px;color:var(--text-3)}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .links a{font-size:13px;color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--link)}

/* ===================== 响应式 ===================== */
@media (max-width:1280px){
  .search-box input{width:150px}
}
@media (max-width:1100px){
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-3px)}
  .data-grid{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .calendar-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1024px){
  .container{padding:0 32px}
  .header-inner{gap:16px}
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#0B1410;border-bottom:1px solid var(--line-soft);
    padding:8px 20px 20px;margin-left:0;
    max-height:0;overflow:hidden;
    transition:max-height .24s ease;
  }
  .main-nav.is-open{max-height:520px;overflow-y:auto}
  .nav-link{height:48px;padding:0 8px;width:100%;justify-content:space-between}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{color:var(--link)}
  .nav-panel{display:none}
  .search-box{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:34px}
  .hero-float{left:auto;right:14px;bottom:14px}
  .feature-grid{grid-template-columns:1fr}
  .demo-wrap{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .review-wall{columns:1}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:30px;line-height:1.34}
  .hero-lead{font-size:15px}
  .compare{grid-template-columns:1fr;gap:14px}
  .compare-item img{aspect-ratio:4/3}
  .hero-bg{opacity:.14}
  .principle-strip{grid-template-columns:1fr}
  .principle-cell{border-right:0;border-bottom:1px solid var(--line-soft)}
  .principle-cell:last-child{border-bottom:0}
  .principle-cell p{min-height:auto}
  .scene-grid{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr;gap:14px}
  .step-card p{min-height:auto}
  .calendar-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .data-wall{padding:36px 22px}
  .data-cell b{font-size:32px}
  .sec-title{font-size:22px}
  .cta-band{padding:32px 22px}
  .cta-inner h2{font-size:22px}
  .sec-head{margin-bottom:26px}
  .scroll-rail{grid-auto-columns:172px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .closing-bar{padding:22px 20px}
  .closing-bar h2{font-size:18px}
  .case-narrow{flex-direction:column;align-items:flex-start}
  .case-narrow .ratio-11{flex:0 0 auto;width:100%}
  .case-narrow .ratio-11 img{aspect-ratio:16/9;height:auto}
  .review-wall{columns:1}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .subscribe-row{flex-direction:column}
  .subscribe-row .btn{width:100%}
  .brand-sub{display:none}
  .price-value b{font-size:30px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg:#0B1410;
  --panel:#12201A;
  --panel-a:#16281F;
  --panel-b:#0F1B15;
  --green:#3FBF7F;
  --green-deep:#2E7D5B;
  --mint:#7DE0A8;
  --pink:#FF8FB1;
  --pink-soft:#FF9FC0;
  --purple:#B98BE0;
  --text:#EAF6EF;
  --text-2:#A9C4B6;
  --text-3:#6E8B7D;
  --link:#7DE0A8;
  --link-hover:#FF9FB8;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --grad:linear-gradient(135deg,#3FBF7F 0%,#7DE0A8 38%,#FF9FC0 100%);
  --grad-soft:linear-gradient(135deg,rgba(63,191,127,.16) 0%,rgba(255,159,192,.10) 100%);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-hover:0 0 0 1px rgba(63,191,127,.35),0 26px 60px -22px rgba(63,191,127,.30);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(63,191,127,.10),transparent 62%),
    radial-gradient(760px 460px at 92% 6%,rgba(255,143,177,.07),transparent 60%);
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--link-hover)}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:6px}
h1,h2,h3{letter-spacing:.01em}
ul{list-style:none}
/* ===================== 容器 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:linear-gradient(180deg,#0F1B15 0%,#0B1410 100%)}
/* ===================== 通用组件 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#07231A}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 34px -14px rgba(63,191,127,.65);color:#07231A}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--green);color:var(--link)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--link);
  background:none;border:none;padding:0;cursor:pointer;position:relative;font-weight:600;
}
.btn-text::after{content:"";position:absolute;left:0;right:22px;bottom:-3px;height:2px;border-radius:2px;background:var(--grad)}
.btn-text::before{content:"→";font-size:13px;order:2;transition:transform .18s ease}
.btn-text:hover::before{transform:translateX(3px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.10);
  font-size:13px;color:var(--text-2);white-space:nowrap;
}
.badge b{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--mint);letter-spacing:0}
.badge.pink b{color:var(--pink)}
.badge.purple b{color:var(--purple)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);white-space:nowrap;
}
.chip-pink{color:#FFC2D5;background:rgba(255,143,177,.10);border-color:rgba(255,143,177,.28)}
.chip-purple{color:#D9BDF2;background:rgba(185,139,224,.10);border-color:rgba(185,139,224,.28)}
.chip-green{color:#A9EFC9;background:rgba(63,191,127,.10);border-color:rgba(63,191,127,.28)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.sec-title{position:relative;padding-left:16px;font-size:28px;line-height:1.36;margin:0 0 8px;font-weight:700}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--grad);
}
.sec-sub{margin:0;color:var(--text-2);font-size:15px;line-height:1.75;max-width:720px}
.ratio-43{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r-md);background:var(--panel-b)}
.ratio-43 img{width:100%;height:100%;object-fit:cover}
/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,20,16,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:background .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{background:#0B1410;box-shadow:0 8px 24px -12px rgba(0,0,0,.6)}
.header-inner{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:22px;height:22px;flex:0 0 auto;
  border-radius:50% 50% 50% 5px;
  background:var(--grad);
  box-shadow:0 0 0 4px rgba(63,191,127,.12);
}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:12px;color:var(--text-3);padding-left:10px;border-left:1px solid var(--line-strong);line-height:1.3}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  height:64px;padding:0 14px;font-size:15px;color:var(--text-2);font-weight:500;
}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;background:var(--grad);
}
.caret{
  width:6px;height:6px;flex:0 0 auto;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-2px);opacity:.7;
}
.nav-panel{
  position:absolute;top:calc(100% + 14px);left:0;width:308px;
  background:#12201A;border:1px solid var(--line-strong);border-radius:20px;
  padding:18px;box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .12s ease-out,transform .12s ease-out,visibility .12s;
}
.nav-item:hover .nav-panel,.nav-item:focus-within .nav-panel{opacity:1;visibility:visible;transform:translateY(0)}
.panel-label{margin:0 0 10px;font-size:12px;color:var(--text-3);letter-spacing:.06em}
.panel-links{display:flex;flex-direction:column;gap:2px}
.panel-links a{padding:7px 10px;border-radius:10px;font-size:14px;color:var(--text-2)}
.panel-links a:hover{background:rgba(63,191,127,.10);color:var(--mint)}
.panel-sep{height:1px;background:var(--line-soft);margin:14px 0}
.panel-entry{display:flex;gap:10px;align-items:center;padding:7px 10px;border-radius:12px}
.panel-entry:hover{background:rgba(255,255,255,.04)}
.panel-entry img{width:40px;height:40px;border-radius:12px;object-fit:cover;flex:0 0 auto}
.panel-entry-txt{display:flex;flex-direction:column;gap:2px;min-width:0}
.panel-entry-txt span{display:block;font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}
.panel-entry-txt em{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--text-3)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;margin-left:auto;
  background:none;border:1px solid var(--line-strong);border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;height:1.5px;background:var(--text);border-radius:2px}
/* ===================== 面包屑与分类横幅 ===================== */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--link)}
.crumb-current{color:var(--text-2)}
.cat-banner{position:relative;background:#12201A;border-bottom:1px solid var(--line-soft);overflow:hidden}
.cat-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 320px at 86% 18%,rgba(63,191,127,.14),transparent 66%);
}
.cat-banner-inner{
  display:flex;align-items:center;gap:44px;
  padding-top:52px;padding-bottom:52px;
}
.cat-banner-txt{flex:1 1 auto;min-width:0}
.cat-banner h1{font-size:40px;line-height:1.3;margin:0 0 14px;font-weight:700}
.cat-banner p{margin:0 0 22px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:640px}
.cat-banner-thumb{flex:0 0 268px;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}
/* ===================== 筛选条 ===================== */
.cat-filter{border-bottom:1px solid var(--line-soft);background:#0F1B15}
.filter-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:18px;padding-bottom:18px;flex-wrap:wrap}
.filter-chips{display:flex;flex-wrap:wrap;gap:10px}
.chip-btn{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.10);cursor:default;
}
.chip-btn.is-on{
  color:#07231A;font-weight:600;background:var(--grad);
  border-color:transparent;
}
.filter-count{font-size:13px;color:var(--text-3)}
.filter-count b{font-family:var(--mono);font-size:15px;color:var(--mint);font-weight:700}
/* ===================== 条目列表 ===================== */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.entry-card{
  display:flex;gap:18px;
  background:linear-gradient(180deg,var(--panel-a) 0%,var(--panel-b) 100%);
  border:1px solid var(--line);border-radius:20px;padding:16px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.entry-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.entry-thumb{flex:0 0 168px;aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:var(--panel-b)}
.entry-thumb img{width:100%;height:100%;object-fit:cover}
.entry-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.entry-title{margin:0 0 8px;font-size:17px;font-weight:600;line-height:1.5;color:var(--text)}
.entry-desc{
  margin:0 0 12px;font-size:13.5px;line-height:1.72;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:auto}
.entry-meta{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  margin-top:14px;padding-top:12px;border-top:1px solid var(--line-soft);
  font-family:var(--mono);font-size:12.5px;color:var(--text-3);
}
.list-more{display:flex;justify-content:center;margin-top:34px}
/* ===================== 选购要点 ===================== */
.points-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.point-item{
  display:flex;gap:16px;padding:22px;border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(180deg,#16281F,#0F1B15);
  transition:border-color .18s ease,transform .18s ease;
}
.point-item:hover{border-color:rgba(63,191,127,.35);transform:translateY(-2px)}
.point-num{
  flex:0 0 auto;font-family:var(--mono);font-size:26px;font-weight:700;line-height:1.1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  -webkit-text-fill-color:transparent;
}
.point-item h3{margin:0 0 6px;font-size:16px;font-weight:600;color:var(--text)}
.point-item p{margin:0;font-size:14px;line-height:1.75;color:var(--text-2)}
/* ===================== 参数对比表 ===================== */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#0F1B15}
.cmp-table{width:100%;border-collapse:collapse;font-size:14px}
.cmp-table th{
  background:#16281F;color:var(--text);text-align:left;
  padding:15px 20px;font-size:13.5px;font-weight:600;white-space:nowrap;
}
.cmp-table td{padding:15px 20px;color:var(--text-2);border-top:1px solid var(--line-soft);vertical-align:top}
.cmp-table tbody tr:hover td{background:rgba(63,191,127,.05)}
.cmp-table td strong{color:var(--text);font-weight:600}
/* ===================== FAQ ===================== */
.faq-list{max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:#0F1B15;margin-bottom:12px;overflow:hidden;
  transition:border-color .18s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:rgba(63,191,127,.30)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:15px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 12px;width:12px;height:12px;
  border-right:1.5px solid var(--text-2);border-bottom:1.5px solid var(--text-2);
  transform:rotate(45deg);transition:transform .18s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-body{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--text-2)}
/* ===================== 相关专题 ===================== */
.topic-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:20px;align-items:start}
.topic-main{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  background:linear-gradient(180deg,#16281F,#0F1B15);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.topic-main:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover)}
.topic-main .ratio-169{position:relative;aspect-ratio:16/9;overflow:hidden}
.topic-main .ratio-169 img{width:100%;height:100%;object-fit:cover}
.topic-main-body{padding:22px}
.topic-main-body h3{margin:0 0 10px;font-size:19px;font-weight:600;line-height:1.5}
.topic-main-body p{margin:0 0 14px;font-size:14px;line-height:1.78;color:var(--text-2)}
.topic-list{
  display:flex;flex-direction:column;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;background:#0F1B15;
}
.topic-row{display:flex;gap:14px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line-soft)}
.topic-row:last-child{border-bottom:0}
.topic-row:hover{background:rgba(63,191,127,.05)}
.topic-row img{width:96px;height:72px;object-fit:cover;border-radius:12px;flex:0 0 auto}
.topic-row-txt{min-width:0}
.topic-row-txt strong{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:4px}
.topic-row-txt em{font-style:normal;font-family:var(--mono);font-size:12px;color:var(--text-3)}
/* ===================== 分类入口 ===================== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  display:block;padding:16px;border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(180deg,#16281F,#0F1B15);color:var(--text);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.cat-card:hover{transform:translateY(-3px);border-color:rgba(63,191,127,.35);box-shadow:var(--shadow-hover);color:var(--text)}
.cat-card-img{aspect-ratio:4/3;border-radius:14px;overflow:hidden;margin-bottom:14px;background:var(--panel-b)}
.cat-card-img img{width:100%;height:100%;object-fit:cover}
.cat-card h3{margin:0 0 10px;font-size:15.5px;font-weight:600;line-height:1.5}
/* ===================== CTA 窄条 ===================== */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:30px 34px;border-radius:var(--r-lg);
  border:1px solid rgba(63,191,127,.26);
  background:linear-gradient(135deg,rgba(63,191,127,.15),rgba(255,159,192,.10)),#12201A;
}
.cta-bar h2{margin:0 0 6px;font-size:22px;font-weight:700;line-height:1.45}
.cta-bar p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75}
/* ===================== 页面底部信息条 ===================== */
.page-foot{border-top:1px solid var(--line-soft);background:#0B1410}
.page-foot-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-top:22px;padding-bottom:22px;font-size:13px;color:var(--text-3);
}
.page-foot-inner span{line-height:1.7}
/* ===================== 页脚 ===================== */
.site-footer{background:#0B1410;border-top:1px solid var(--line-soft);padding:56px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{margin:0 0 16px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:290px}
.footer-col h3{margin:0 0 16px;font-size:15px;font-weight:600;color:var(--text)}
.footer-col ul{margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--link)}
.subscribe-form label{display:block;font-size:13px;color:var(--text-3);margin-bottom:10px}
.subscribe-row{display:flex;gap:10px}
.subscribe-row input{
  flex:1 1 auto;min-width:0;height:44px;border-radius:var(--r-pill);
  background:#0F1B15;border:1px solid var(--line-strong);
  padding:0 18px;font-size:14px;color:var(--text);
}
.subscribe-row input::placeholder{color:var(--text-3)}
.subscribe-row input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 2px rgba(63,191,127,.2)}
.subscribe-row .btn{height:44px;padding:0 22px;font-size:14px;flex:0 0 auto}
.form-hint{display:block;font-size:13px;color:var(--text-3);margin-top:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line-soft);padding:20px 0 28px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a{font-size:13px;color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--link)}
/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .header-inner{height:56px;gap:12px}
  .brand-sub{display:none}
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;margin-left:0;
    background:#0B1410;border-bottom:1px solid var(--line);
    padding:8px 32px 22px;display:none;
    max-height:calc(100vh - 56px);overflow-y:auto;
  }
  .main-nav.is-open{display:flex}
  .nav-item{width:100%}
  .nav-link{height:auto;padding:15px 0;font-size:16px;justify-content:space-between;border-bottom:1px solid var(--line-soft)}
  .nav-link.is-active::after{display:none}
  .nav-panel{
    position:static;width:auto;opacity:1;visibility:visible;transform:none;
    display:none;box-shadow:none;background:transparent;border:0;
    padding:8px 0 14px 16px;
  }
  .nav-item.is-open .nav-panel{display:block}
  .cat-banner-inner{gap:32px;padding-top:44px;padding-bottom:44px}
  .cat-banner-thumb{flex:0 0 220px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .cat-banner-inner{flex-direction:column;align-items:flex-start;gap:26px;padding-top:34px;padding-bottom:38px}
  .cat-banner h1{font-size:30px;line-height:1.35}
  .cat-banner-thumb{flex:0 0 auto;width:100%;max-width:320px}
  .sec-title{font-size:22px;line-height:1.4}
  .entry-grid{grid-template-columns:1fr;gap:14px}
  .entry-thumb{flex:0 0 128px}
  .points-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr;gap:14px}
  .cta-bar{padding:24px;flex-direction:column;align-items:flex-start}
  .filter-row{padding-top:14px;padding-bottom:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cmp-table thead{display:none}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%}
  .cmp-table tr{
    border:1px solid var(--line);border-radius:var(--r-md);
    background:#0F1B15;margin-bottom:12px;padding:8px 4px;overflow:hidden;
  }
  .cmp-table td{
    display:flex;justify-content:space-between;gap:16px;
    border-top:0;padding:9px 14px;font-size:14px;
  }
  .cmp-table td::before{
    content:attr(data-label);color:var(--text-3);font-size:13px;flex:0 0 auto;
  }
}
@media (max-width:520px){
  .cat-banner h1{font-size:26px}
  .entry-card{flex-direction:column;gap:14px}
  .entry-thumb{flex:0 0 auto;width:100%}
  .subscribe-row{flex-direction:column}
  .subscribe-row .btn{width:100%}
  .topic-row{flex-direction:row}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}