/* roulang page: index */
:root{
  --c-primary:#F0563A;
  --c-primary-hover:#D84226;
  --c-primary-active:#BC3720;
  --c-primary-soft:#FFE7DF;
  --c-secondary:#3B1F35;
  --c-secondary-soft:#F1E3EC;
  --c-accent:#FFB169;
  --c-mint:#2FA98C;
  --c-bg:#FBF5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F5EBE3;
  --c-line:#EBDCD0;
  --c-text:#241A20;
  --c-text-2:#6E5C64;
  --c-text-3:#9A8A90;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(59,31,53,.06);
  --shadow-2:0 12px 32px rgba(59,31,53,.12);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(240,86,58,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);box-shadow:0 1px 0 var(--c-line)}
.brandbar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.brandbar-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(145deg,var(--c-primary),var(--c-primary-hover));
  color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(240,86,58,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-secondary);letter-spacing:-.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);margin-top:3px}
.nav-search{
  flex:1 1 auto;max-width:430px;position:relative;display:flex;align-items:center;
  background:var(--c-surface-alt);border:1px solid transparent;border-radius:999px;
  height:44px;padding:0 18px;transition:.22s ease;
}
.nav-search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(240,86,58,.13)}
.nav-search i{color:var(--c-text-3);font-size:14px;margin-right:10px}
.nav-search input{
  flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--c-text);
  height:100%;font-family:inherit;
}
.nav-search input::placeholder{color:var(--c-text-3)}
.brandbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-secondary);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-hover)}

.channelbar{background:var(--c-surface-alt);border-bottom:1px solid var(--c-line)}
.channelbar-inner{
  display:flex;align-items:stretch;gap:4px;overflow-x:auto;scrollbar-width:none;
  -ms-overflow-style:none;
}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;flex:0 0 auto;padding:13px 16px 11px;font-size:15px;color:var(--c-text-2);
  border-bottom:3px solid transparent;white-space:nowrap;transition:.2s ease;font-weight:500;
}
.channel:hover{background:var(--c-surface);color:var(--c-primary-hover)}
.channel.active{color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:700;background:var(--c-surface)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  line-height:1.4;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 6px 16px rgba(240,86,58,.24)}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(216,66,38,.3)}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px)}
.btn-ghost{background:var(--c-surface);color:var(--c-secondary);border-color:var(--c-line);box-shadow:var(--shadow-1)}
.btn-ghost:hover{background:#fff;border-color:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--c-primary);font-weight:600;font-size:14px}
.text-link i{transition:transform .2s ease;font-size:12px}
.text-link:hover i{transform:translateX(3px)}

/* ============ shared ============ */
.section{padding:88px 0}
.section-alt{background:var(--c-surface-alt)}
.section-dark{background:var(--c-secondary);color:#F6E9F0}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark p{color:rgba(255,255,255,.76)}
.section-dark .section-sub{color:rgba(255,255,255,.72)}
.section-head{max-width:780px;margin-bottom:46px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center h2::after{margin-left:auto;margin-right:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:6px 16px;margin-bottom:18px;
}
.eyebrow.on-dark{background:rgba(255,177,105,.16);color:var(--c-accent)}
.section-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.3}
.section-head h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:var(--c-primary);margin-top:16px}
.section-sub{margin-top:16px;font-size:16px;color:var(--c-text-2);line-height:1.8;max-width:720px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.badge-soft{background:var(--c-secondary-soft);color:var(--c-secondary)}
.badge-mint{background:var(--c-mint);color:#fff}
.badge-accent{background:rgba(255,177,105,.22);color:#A85612}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.panel:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:var(--c-primary-soft)}
.thumb{position:relative;overflow:hidden;border-radius:var(--radius-md);background:var(--c-surface-alt)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb::after{content:"";position:absolute;inset:0;background:rgba(240,86,58,.06);pointer-events:none}
.ratio-16-9{aspect-ratio:16/9}
.ratio-4-3{aspect-ratio:4/3}
.grid{display:grid;gap:22px}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 78px;background:var(--c-surface-alt)}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/ad89cbc564955b7a.jpg');
  background-size:cover;background-position:center;opacity:.16;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 88% 12%,rgba(255,177,105,.35),transparent 46%),
             linear-gradient(180deg,rgba(251,245,240,.72),rgba(251,245,240,.94));
}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:860px}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);font-weight:700;line-height:1.22;
  color:var(--c-secondary);margin-bottom:22px;
}
.hero h1 .hl{color:var(--c-primary);position:relative;white-space:nowrap}
.hero-lead{font-size:16px;line-height:1.85;color:var(--c-text-2);max-width:800px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:44px}
.compare-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:26px 26px 22px;box-shadow:var(--shadow-1);transition:.22s ease;
}
.compare-panel:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.compare-panel.after{border:2px solid var(--c-primary-soft);box-shadow:var(--shadow-2)}
.compare-title{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-secondary)}
.compare-icon{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:14px;background:var(--c-surface-alt);color:var(--c-text-3);
}
.compare-panel.after .compare-icon{background:var(--c-primary-soft);color:var(--c-primary)}
.compare-list{margin-top:18px}
.compare-list li{
  position:relative;padding-left:24px;margin-bottom:12px;font-size:15px;line-height:1.7;color:var(--c-text-2);
}
.compare-list li:last-child{margin-bottom:0}
.compare-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--c-text-3);transform:rotate(45deg);
}
.compare-panel.after .compare-list li::before{background:var(--c-primary)}

/* ============ kpi ============ */
.kpi-band{background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:0}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.kpi{
  padding:34px 24px;text-align:center;border-right:1px solid var(--c-line);transition:.22s ease;
}
.kpi:last-child{border-right:0}
.kpi:hover{background:var(--c-surface-alt)}
.kpi-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--c-primary);line-height:1.2}
.kpi-label{margin-top:8px;font-size:14px;color:var(--c-text-2)}

/* ============ chips bar ============ */
.chips-band{background:var(--c-bg);border-bottom:1px solid var(--c-line);padding:18px 0}
.chips{display:flex;gap:12px;overflow-x:auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:9px;padding:9px 20px;border-radius:999px;
  background:var(--c-surface);border:1px solid var(--c-line);font-size:14px;font-weight:600;color:var(--c-text-2);
  transition:.2s ease;
}
.chip i{color:var(--c-accent);font-size:13px}
.chip:hover{color:var(--c-primary-hover);border-color:var(--c-primary-soft);background:var(--c-primary-soft);transform:translateY(-2px);box-shadow:var(--shadow-1)}

/* ============ feature tabs ============ */
.feature-tabs{border:0;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.feature-tabs .nav-link{
  border:1px solid var(--c-line);border-radius:999px;background:var(--c-surface);
  color:var(--c-text-2);font-size:15px;font-weight:600;padding:10px 22px;transition:.2s ease;
}
.feature-tabs .nav-link:hover{border-color:var(--c-primary-soft);color:var(--c-primary-hover);background:var(--c-primary-soft)}
.feature-tabs .nav-link.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(240,86,58,.24)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-item{padding:28px 26px;display:flex;flex-direction:column;height:100%}
.feature-ico{
  width:48px;height:48px;border-radius:14px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:18px;
}
.feature-item h3{font-size:19px;font-weight:600;margin-bottom:10px}
.feature-item p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;margin-bottom:18px}
.feature-item .text-link{margin-top:auto}

/* ============ scenes ============ */
.scene{display:grid;grid-template-columns:1.02fr 1fr;gap:48px;align-items:center;margin-bottom:64px}
.scene:last-of-type{margin-bottom:0}
.scene.reverse .scene-media{order:2}
.scene-media .thumb{border-radius:var(--radius-lg);box-shadow:var(--shadow-2)}
.scene-body h3{font-size:clamp(21px,2.2vw,27px);font-weight:700;margin-bottom:16px}
.scene-body p{font-size:15.5px;color:var(--c-text-2);line-height:1.85;margin-bottom:18px}
.scene-points{display:grid;gap:12px;margin-bottom:22px}
.scene-points li{position:relative;padding-left:26px;font-size:15px;color:var(--c-text-2)}
.scene-points li::before{
  content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:2px;
  background:var(--c-primary);transform:rotate(45deg);
}
.scene-narrow{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:56px}
.scene-narrow .panel{padding:0;overflow:hidden}
.scene-narrow .thumb{border-radius:0}
.scene-narrow .sn-body{padding:24px 26px 28px}
.scene-narrow h3{font-size:19px;font-weight:700;margin-bottom:10px}
.scene-narrow p{font-size:14.5px;color:var(--c-text-2);line-height:1.75}

/* ============ compare table ============ */
.cmp-rows{display:grid;gap:14px}
.cmp-row{
  display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:0;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-1);
}
.cmp-row > div{padding:22px 24px;font-size:15px;border-right:1px solid var(--c-line);display:flex;align-items:center}
.cmp-row > div:last-child{border-right:0}
.cmp-key{font-weight:700;color:var(--c-secondary);background:var(--c-surface-alt)}
.cmp-old{color:var(--c-text-3)}
.cmp-new{color:var(--c-primary-hover);font-weight:600;background:rgba(255,231,223,.5)}
.cmp-head > div{font-weight:700;font-size:14px;letter-spacing:.02em}
.cmp-head .cmp-key{background:var(--c-secondary);color:#fff}
.cmp-head .cmp-old{background:var(--c-surface-alt);color:var(--c-text-2)}
.cmp-head .cmp-new{background:var(--c-primary-soft);color:var(--c-primary-hover)}

/* ============ timeline ============ */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:26px;height:2px;background:var(--c-line);
}
.tl-item{position:relative;padding-top:56px}
.tl-dot{
  position:absolute;top:14px;left:0;width:26px;height:26px;border-radius:50%;background:var(--c-surface);
  border:3px solid var(--c-primary);box-shadow:0 0 0 6px var(--c-bg);z-index:2;
}
.tl-num{font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.08em}
.tl-item h3{font-size:18px;font-weight:700;margin:8px 0 10px}
.tl-item p{font-size:14px;color:var(--c-text-2);line-height:1.75}
.section-alt .tl-dot{box-shadow:0 0 0 6px var(--c-surface-alt)}

/* ============ channel wall ============ */
.chan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.chan-card{
  display:flex;flex-direction:column;padding:26px 24px;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);transition:.22s ease;
}
.chan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.chan-card h3{font-size:17px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.chan-card h3 i{color:var(--c-accent);font-size:14px}
.chan-card p{font-size:14px;color:var(--c-text-2);line-height:1.7;margin-bottom:18px}
.chan-arrow{
  margin-top:auto;width:32px;height:32px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:.22s ease;
}
.chan-card:hover .chan-arrow{background:var(--c-primary);color:#fff;transform:translateX(4px)}

/* ============ demo ============ */
.demo-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center}
.step-list{display:grid;gap:18px}
.step{display:flex;gap:18px;padding:20px 22px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);transition:.22s ease}
.step:hover{border-color:var(--c-primary-soft);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.step-num{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14px;color:var(--c-text-2);line-height:1.7}
.demo-carousel{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--c-line);background:var(--c-surface)}
.demo-carousel .carousel-item img{width:100%;aspect-ratio:4/3;object-fit:cover}
.demo-carousel .carousel-indicators{bottom:12px}
.demo-carousel .carousel-indicators [data-bs-target]{
  width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.6);border:0;opacity:1;margin:0 5px;
}
.demo-carousel .carousel-indicators .active{background:var(--c-primary);transform:scale(1.2)}
.demo-carousel .carousel-indicators{opacity:1}

/* ============ cases ============ */
.case-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:26px;align-items:start}
.case-main{padding:32px}
.case-main .badge{margin-bottom:16px}
.case-main h3{font-size:21px;font-weight:700;margin-bottom:14px}
.case-main p{font-size:15px;color:var(--c-text-2);line-height:1.85;margin-bottom:16px}
.case-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.case-stats{display:grid;gap:16px}
.case-stat{padding:22px 24px;display:flex;align-items:center;gap:18px}
.case-stat .cs-ico{
  flex:0 0 46px;width:46px;height:46px;border-radius:13px;background:var(--c-primary-soft);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:17px;
}
.case-stat strong{display:block;font-size:19px;color:var(--c-secondary)}
.case-stat span{font-size:13.5px;color:var(--c-text-2)}

/* ============ pricing ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:32px 28px;display:flex;flex-direction:column;transition:.22s ease;color:var(--c-text);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.price-card.recommended{border:2px solid var(--c-primary);box-shadow:0 18px 40px rgba(240,86,58,.22);transform:translateY(-6px)}
.price-card.recommended:hover{transform:translateY(-9px)}
.price-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--c-primary);color:#fff;font-size:12px;font-weight:700;padding:5px 18px;border-radius:999px;
  letter-spacing:.04em;box-shadow:0 6px 14px rgba(240,86,58,.3);
}
.price-name{font-size:17px;font-weight:700;color:var(--c-secondary)}
.price-desc{font-size:13.5px;color:var(--c-text-3);margin-top:6px;min-height:22px}
.price-value{margin:22px 0 4px;display:flex;align-items:baseline;gap:6px}
.price-value .cur{font-size:18px;font-weight:700;color:var(--c-primary)}
.price-value .num{font-size:42px;font-weight:700;line-height:1;color:var(--c-primary);letter-spacing:-.02em}
.price-value .unit{font-size:13.5px;color:var(--c-text-2)}
.price-line{height:1px;background:var(--c-line);margin:22px 0}
.price-list{display:grid;gap:12px;margin-bottom:26px}
.price-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--c-text-2);line-height:1.65}
.price-list li i{position:absolute;left:0;top:3px;color:var(--c-primary);font-size:13px}
.price-card .btn{margin-top:auto}
.section-dark .price-card{color:var(--c-text)}
.section-dark .price-card p{color:var(--c-text-3)}

/* ============ reviews ============ */
.review-cols{columns:3;column-gap:22px}
.review-card{
  break-inside:avoid;margin-bottom:22px;padding:24px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-md);box-shadow:var(--shadow-1);transition:.22s ease;
}
.review-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:var(--c-primary-soft)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:38px;height:38px;flex:0 0 38px;border-radius:50%;background:var(--c-secondary-soft);
  color:var(--c-secondary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.review-name{font-weight:600;font-size:14.5px}
.stars{color:var(--c-primary);font-size:11px;letter-spacing:2px;margin-top:2px}
.review-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.review-time{margin-top:14px;font-size:12.5px;color:var(--c-text-3)}

/* ============ stats + voice ============ */
.voice-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:center}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.stat-item strong{display:block;font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--c-primary);line-height:1.15}
.stat-item span{display:block;margin-top:8px;font-size:14px;color:var(--c-text-2)}
.voice-box{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-1)}
.voice-quote{font-size:18px;line-height:1.8;color:var(--c-secondary);font-weight:500}
.voice-meta{margin-top:20px;font-size:13.5px;color:var(--c-text-3)}
.voice-box .carousel-indicators{position:static;margin:24px 0 0;justify-content:flex-start}
.voice-box .carousel-indicators [data-bs-target]{
  width:22px;height:5px;border-radius:999px;background:var(--c-line);border:0;opacity:1;margin:0 4px 0 0;
}
.voice-box .carousel-indicators .active{background:var(--c-primary)}

/* ============ guarantee ============ */
.guard-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:center}
.guard-list{display:grid;gap:18px}
.guard-item{display:flex;gap:18px;padding:24px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);box-shadow:var(--shadow-1);transition:.22s ease}
.guard-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.guard-ico{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;background:rgba(47,169,140,.12);
  color:var(--c-mint);display:flex;align-items:center;justify-content:center;font-size:17px;
}
.guard-item h3{font-size:17px;font-weight:600;margin-bottom:7px}
.guard-item p{font-size:14px;color:var(--c-text-2);line-height:1.75}

/* ============ news ============ */
.news-top{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.news-top .section-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-1);transition:.22s ease;height:100%;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.news-thumb{display:block;position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-surface-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-thumb::after{content:"";position:absolute;inset:0;background:rgba(240,86,58,.06);pointer-events:none}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-body .badge{align-self:flex-start;margin-bottom:12px}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--c-primary)}
.news-body p{font-size:14px;color:var(--c-text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-text-3)}
.empty-state{
  grid-column:1/-1;min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:var(--c-surface-alt);border:1px dashed var(--c-line);border-radius:var(--radius-md);
  color:var(--c-text-2);font-size:15px;text-align:center;padding:32px;
}
.empty-state i{font-size:30px;color:var(--c-primary);opacity:.7}

/* ============ faq ============ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.faq-aside .btn{margin-top:22px}
.faq-aside p{font-size:15px;color:var(--c-text-2);line-height:1.85}
.accordion-item{
  border:1px solid var(--c-line)!important;border-radius:var(--radius-md)!important;
  background:var(--c-surface);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:var(--c-surface);font-size:16px;font-weight:600;color:var(--c-text);
  padding:20px 54px 20px 22px;border-radius:var(--radius-md)!important;box-shadow:none!important;line-height:1.6;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--c-primary);transition:transform .2s ease;line-height:1;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:rgba(255,231,223,.35)}
.accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg)}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--c-primary)!important}
.accordion-button:hover{color:var(--c-primary-hover)}
.accordion-body{font-size:14.5px;color:var(--c-text-2);line-height:1.85;padding:0 24px 22px}

/* ============ cta ============ */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-hover));
  border-radius:var(--radius-lg);padding:56px 48px;color:#fff;position:relative;overflow:hidden;
  box-shadow:0 20px 50px rgba(240,86,58,.28);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-band::after{
  content:"";position:absolute;right:80px;bottom:-90px;width:200px;height:200px;border-radius:50%;
  background:rgba(255,177,105,.24);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(23px,2.6vw,32px);font-weight:700;color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);font-size:15px;line-height:1.8;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-ghost{background:#fff;color:var(--c-primary-hover);border-color:#fff}
.cta-band .btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.cta-band .btn-outline{color:#fff;border-color:rgba(255,255,255,.75)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.16);color:#fff}

/* ============ disclaimer ============ */
.disclaimer{background:var(--c-surface-alt);border-top:1px solid var(--c-line);padding:26px 0}
.disclaimer-inner{display:flex;gap:14px;align-items:flex-start}
.disclaimer i{color:var(--c-primary);font-size:16px;margin-top:4px}
.disclaimer p{font-size:13.5px;color:var(--c-text-2);line-height:1.85}

/* ============ footer ============ */
.site-footer{background:var(--c-secondary);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-logo .brand-mark{box-shadow:none}
.footer-logo strong{color:#fff;font-size:17px;font-weight:700}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.55);
}

/* ============ offcanvas ============ */
.offcanvas{border-left:0!important}
.offcanvas-header{border-bottom:1px solid var(--c-line)}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--c-secondary)}
.offcanvas-body .chan-link{
  display:flex;align-items:center;justify-content:space-between;padding:14px 4px;
  border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-text-2);font-weight:500;
}
.offcanvas-body .chan-link:hover{color:var(--c-primary)}
.offcanvas-body .btn{margin-top:22px}

/* ============ responsive ============ */
@media (max-width:1199px){
  .chan-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .review-cols{columns:2}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .nav-search{display:none}
  .brandbar-inner{height:66px}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .brandbar-actions .btn-primary{display:none}
  .hero{padding:48px 0 58px}
  .compare{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .scene,.scene.reverse{grid-template-columns:1fr;gap:28px}
  .scene.reverse .scene-media{order:0}
  .scene-narrow{grid-template-columns:1fr}
  .demo-grid,.voice-grid,.guard-grid,.faq-grid,.case-grid{grid-template-columns:1fr;gap:34px}
  .price-grid{grid-template-columns:1fr}
  .price-card.recommended{transform:none}
  .price-card.recommended:hover{transform:translateY(-4px)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .kpi:nth-child(2){border-right:0}
  .kpi:nth-child(1),.kpi:nth-child(2){border-bottom:1px solid var(--c-line)}
  .cmp-row{grid-template-columns:1fr}
  .cmp-row > div{border-right:0;border-bottom:1px solid var(--c-line);padding:16px 20px}
  .cmp-row > div:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .review-cols{columns:1}
  .cta-band{padding:40px 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .hero h1{font-size:30px}
  .hero h1 .hl{white-space:normal}
  .hero-actions .btn{width:100%}
  .feature-grid{grid-template-columns:1fr}
  .chan-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .stat-grid{gap:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .channel{padding:12px 14px 10px;font-size:14px}
  .cmp-row > div{font-size:14px}
  .review-card{padding:20px}
}
@media (max-width:479px){
  .kpi-grid{grid-template-columns:1fr 1fr}
  .kpi{padding:24px 12px}
  .kpi-num{font-size:24px}
  .btn{width:100%;padding:12px 18px}
  .brandbar-actions{gap:8px}
  .brand-text strong{font-size:15px}
  .brand-text em{display:none}
}

/* roulang page: article */
:root{
  --c-primary:#F0563A;
  --c-primary-hover:#D84226;
  --c-primary-active:#BC3720;
  --c-primary-soft:#FFE7DF;
  --c-secondary:#3B1F35;
  --c-secondary-soft:#F1E3EC;
  --c-accent:#FFB169;
  --c-mint:#2FA98C;
  --c-bg:#FBF5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F5EBE3;
  --c-line:#EBDCD0;
  --c-text:#241A20;
  --c-text-2:#6E5C64;
  --c-text-3:#9A8A90;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(59,31,53,.06);
  --shadow-2:0 12px 32px rgba(59,31,53,.12);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);box-shadow:0 1px 0 var(--c-line)}
.brandbar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.brandbar-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(145deg,var(--c-primary),var(--c-primary-hover));
  color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(240,86,58,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-secondary);letter-spacing:-.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);margin-top:3px}
.nav-search{
  flex:1 1 auto;max-width:430px;position:relative;display:flex;align-items:center;
  background:var(--c-surface-alt);border:1px solid transparent;border-radius:999px;
  height:44px;padding:0 18px;transition:.22s ease;
}
.nav-search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(240,86,58,.13)}
.nav-search i{color:var(--c-text-3);font-size:14px;margin-right:10px}
.nav-search input{flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--c-text);height:100%;font-family:inherit}
.nav-search input::placeholder{color:var(--c-text-3)}
.brandbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-secondary);font-size:17px;cursor:pointer;transition:.2s ease;
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-hover)}
.mobile-panel{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--c-line);box-shadow:var(--shadow-2);padding:8px 0;z-index:1029}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:13px 20px;font-size:14.5px;font-weight:600;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a:hover{background:var(--c-primary-soft);color:var(--c-primary-hover)}
/* ===== channel bar ===== */
.channelbar{background:var(--c-surface-alt);border-bottom:1px solid var(--c-line)}
.channelbar-inner{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;display:block;padding:14px 14px 11px;font-size:14px;font-weight:600;
  color:var(--c-text-2);white-space:nowrap;border-bottom:3px solid transparent;transition:.2s ease;
}
.channel:hover{background:#fff;color:var(--c-primary-hover)}
.channel.active{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.channel:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px}
/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 6px 16px rgba(240,86,58,.24)}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(216,66,38,.3)}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px)}
.btn-ghost{background:var(--c-surface);color:var(--c-secondary);border-color:var(--c-line);box-shadow:var(--shadow-1)}
.btn-ghost:hover{background:#fff;border-color:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:14px}
.btn:focus-visible{outline:3px solid rgba(240,86,58,.45);outline-offset:2px}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--c-primary);font-weight:600;font-size:14px}
.text-link i{transition:transform .2s ease;font-size:12px}
.text-link:hover i{transform:translateX(3px)}
/* ===== shared ===== */
.section{padding:88px 0}
.section-alt{background:var(--c-surface-alt)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:var(--c-primary);margin-top:16px}
.section-sub{margin-top:14px;font-size:15.5px;color:var(--c-text-2);line-height:1.8;max-width:720px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.7}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.badge-soft{background:var(--c-secondary-soft);color:var(--c-secondary)}
.badge-mint{background:var(--c-mint);color:#fff}
.badge-accent{background:rgba(255,177,105,.24);color:#A85612}
/* ===== article hero ===== */
.article-hero{
  position:relative;background:var(--c-surface-alt);border-bottom:1px solid var(--c-line);
  padding:34px 0 46px;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(240,86,58,.14) 1px,transparent 1px);
  background-size:18px 18px;opacity:.55;pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--c-text-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:var(--c-text-3);font-size:11px}
.crumbs .now{color:var(--c-text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(26px,3.4vw,42px);font-weight:700;line-height:1.3;
  margin:18px 0 20px;max-width:920px;color:var(--c-secondary);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;font-size:13.5px;color:var(--c-text-2)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--c-primary);font-size:13px}
/* ===== article layout ===== */
.article-shell{background:var(--c-bg);padding:56px 0 80px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px;gap:56px;justify-content:center}
}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:38px 42px;box-shadow:var(--shadow-1);
}
.article-body{font-size:16px;line-height:1.85;color:var(--c-text)}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(21px,2.2vw,25px);font-weight:700;line-height:1.4;color:var(--c-secondary);
  margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:28px 0 12px;color:var(--c-secondary)}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(240,86,58,.4)}
.article-body a:hover{color:var(--c-primary-hover);border-bottom-color:var(--c-primary-hover)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:6px;list-style:none}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:1px;
  background:var(--c-primary);transform:rotate(45deg);
}
.article-body ol{counter-reset:artnum}
.article-body ol li{padding-left:28px}
.article-body ol li::before{
  counter-increment:artnum;content:counter(artnum);
  position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  background:var(--c-primary-soft);color:var(--c-primary-hover);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--c-surface-alt);
  border-left:4px solid var(--c-primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--c-text-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:24px auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-text-3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:var(--c-surface-alt);font-weight:600;color:var(--c-secondary)}
.article-body tbody tr:nth-child(even){background:#FDF8F4}
.article-body strong{color:var(--c-secondary);font-weight:700}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;background:var(--c-surface-alt);border-radius:var(--radius-md);
  padding:36px 22px;color:var(--c-text-2);
}
.empty-state i{font-size:30px;color:var(--c-primary);opacity:.7}
.empty-state strong{font-size:17px;color:var(--c-secondary)}
/* ===== sidebar ===== */
.side-col{display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:22px 22px 18px;box-shadow:var(--shadow-1);position:sticky;top:132px;
}
.side-card h3{font-size:15px;font-weight:700;color:var(--c-secondary);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--c-primary);font-size:13px}
.toc-list{display:flex;flex-direction:column}
.toc-list a{
  display:block;font-size:13.5px;color:var(--c-text-2);padding:8px 0;
  border-bottom:1px dashed var(--c-line);line-height:1.6;transition:.2s ease;
}
.toc-list a:last-child{border-bottom:0}
.toc-list a:hover{color:var(--c-primary);padding-left:4px}
.side-tips{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.side-tips li{display:flex;gap:10px;font-size:13.5px;color:var(--c-text-2);line-height:1.7}
.side-tips i{color:var(--c-mint);margin-top:4px;font-size:12px}
/* ===== tags ===== */
.article-tail{margin-top:34px;padding-top:26px;border-top:1px dashed var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13px;color:var(--c-text-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 15px;border-radius:999px;
  background:var(--c-surface-alt);color:var(--c-text-2);font-size:13px;font-weight:500;
  border:1px solid var(--c-line);transition:.2s ease;
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary-soft)}
.share-row{display:flex;align-items:center;gap:12px;margin-top:20px}
.share-row .label{font-size:13px;color:var(--c-text-3)}
.share-btn{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface-alt);color:var(--c-text-2);font-size:14px;border:1px solid var(--c-line);transition:.2s ease;
}
.share-btn:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:translateY(-2px)}
/* ===== related ===== */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;height:100%;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.post-thumb{position:relative;aspect-ratio:16/9;background:var(--c-surface-alt);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-thumb::after{content:"";position:absolute;inset:0;background:rgba(240,86,58,.06);pointer-events:none}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.post-title{
  font-size:16.5px;font-weight:700;line-height:1.5;color:var(--c-secondary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--c-primary-hover)}
.post-desc{
  font-size:13.5px;color:var(--c-text-2);line-height:1.7;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;font-size:12.5px;color:var(--c-text-3)}
/* ===== prev next ===== */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pn-card{
  display:flex;gap:14px;align-items:flex-start;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-md);padding:18px 20px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.pn-card i{color:var(--c-primary);font-size:14px;margin-top:4px}
.pn-card small{display:block;font-size:12px;color:var(--c-text-3);margin-bottom:5px}
.pn-card span{font-size:14.5px;font-weight:600;color:var(--c-secondary);line-height:1.5}
.back-row{margin-top:20px}
/* ===== author ===== */
.author-card{
  display:flex;gap:18px;align-items:flex-start;background:var(--c-surface-alt);
  border:1px solid var(--c-line);border-radius:var(--radius-lg);padding:26px 28px;
}
.avatar{
  width:56px;height:56px;flex:0 0 56px;border-radius:50%;
  background:linear-gradient(145deg,var(--c-primary),var(--c-secondary));
  color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.author-card h3{font-size:16px;font-weight:700;color:var(--c-secondary);margin-bottom:8px}
.author-card p{font-size:13.8px;color:var(--c-text-2);line-height:1.8}
/* ===== cta ===== */
.cta-band{
  background:var(--c-primary);color:#fff;border-radius:var(--radius-lg);
  padding:34px 38px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;box-shadow:0 16px 40px rgba(240,86,58,.26);
}
.cta-band h2{font-size:clamp(20px,2.3vw,28px);color:#fff;line-height:1.35;font-weight:700}
.cta-band p{color:rgba(255,255,255,.86);font-size:14.5px;margin-top:8px;line-height:1.7}
.cta-band .btn-white{background:#fff;color:var(--c-primary-hover);border-color:#fff;box-shadow:0 8px 20px rgba(0,0,0,.14)}
.cta-band .btn-white:hover{background:#FFF3EE;color:var(--c-primary-active);transform:translateY(-1px)}
.cta-band .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.cta-band .btn-line:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.compliance-note{margin-top:20px;font-size:13px;color:var(--c-text-3);text-align:center;line-height:1.8}
/* ===== footer ===== */
.site-footer{background:var(--c-secondary);color:#F6E9F0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px;padding-bottom:44px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:11px;font-size:16px}
.footer-logo strong{font-size:16px;color:#fff;font-weight:700}
.site-footer p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.85}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.74)}
.footer-col a:hover{color:var(--c-accent)}
.footer-col a:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:18px 0 22px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);
}
/* ===== responsive ===== */
@media (max-width:1199px){
  .side-card{position:static}
  .article-layout{gap:32px}
}
@media (max-width:991px){
  .brandbar-inner{height:66px;gap:14px}
  .nav-search{max-width:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .brandbar-actions .btn{display:none}
  .section{padding:64px 0}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-card{padding:30px 26px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .brand-text em{display:none}
  .brand-text strong{font-size:15px;max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav-search{display:none}
  .channel{padding:12px 12px 9px;font-size:13.5px}
  .section{padding:52px 0}
  .article-hero{padding:26px 0 34px}
  .article-hero h1{margin:14px 0 16px}
  .article-shell{padding:34px 0 56px}
  .article-card{padding:24px 18px;border-radius:var(--radius-md)}
  .article-body{font-size:15.5px}
  .related-grid{grid-template-columns:1fr}
  .pn-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px}
  .author-card{flex-direction:column;gap:14px;padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .btn{width:100%}
  .brandbar-actions .btn,.cta-band .btn{width:100%}
  .cta-band{flex-direction:column;align-items:stretch}
  .meta-row{gap:8px 16px;font-size:12.5px}
}

/* roulang page: category1 */
:root{
  --c-primary:#F0563A;
  --c-primary-hover:#D84226;
  --c-primary-active:#BC3720;
  --c-primary-soft:#FFE7DF;
  --c-secondary:#3B1F35;
  --c-secondary-soft:#F1E3EC;
  --c-accent:#FFB169;
  --c-mint:#2FA98C;
  --c-bg:#FBF5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F5EBE3;
  --c-line:#EBDCD0;
  --c-text:#241A20;
  --c-text-2:#6E5C64;
  --c-text-3:#9A8A90;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(59,31,53,.06);
  --shadow-2:0 12px 32px rgba(59,31,53,.12);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-text);
  font-size:16px;line-height:1.75;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--c-text)}
p{margin:0}
ul{margin:0}
:focus-visible{outline:3px solid rgba(240,86,58,.55);outline-offset:2px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 6px 16px rgba(240,86,58,.24)}
.btn.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(216,66,38,.3)}
.btn.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14)}
.btn.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px)}
.btn.btn-ghost{background:var(--c-surface);color:var(--c-secondary);border-color:var(--c-line);box-shadow:var(--shadow-1)}
.btn.btn-ghost:hover{background:#fff;border-color:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--c-primary);font-weight:600;font-size:14px}
.text-link i{transition:transform .2s ease;font-size:12px}
.text-link:hover i{transform:translateX(3px)}
/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.badge-soft{background:var(--c-secondary-soft);color:var(--c-secondary)}
.badge-mint{background:var(--c-mint);color:#fff}
.badge-accent{background:rgba(255,177,105,.24);color:#A85612}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);box-shadow:0 1px 0 var(--c-line)}
.brandbar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.brandbar-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(145deg,var(--c-primary),var(--c-primary-hover));
  color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(240,86,58,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-secondary);letter-spacing:-.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);margin-top:3px}
.nav-search{
  flex:1 1 auto;max-width:430px;position:relative;display:flex;align-items:center;
  background:var(--c-surface-alt);border:1px solid transparent;border-radius:999px;
  height:44px;padding:0 18px;transition:.22s ease;
}
.nav-search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(240,86,58,.13)}
.nav-search i{color:var(--c-text-3);font-size:14px;margin-right:10px}
.nav-search input{flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--c-text);height:100%;font-family:inherit}
.nav-search input::placeholder{color:var(--c-text-3)}
.brandbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-secondary);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-hover)}
/* ---------- channel bar ---------- */
.channelbar{background:var(--c-surface-alt);border-bottom:1px solid var(--c-line)}
.channelbar-inner{display:flex;align-items:stretch;gap:4px;overflow-x:auto;scrollbar-width:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel{
  padding:15px 17px;font-size:14.5px;font-weight:500;color:var(--c-text-2);
  border-bottom:3px solid transparent;white-space:nowrap;line-height:1.4;
}
.channel:hover{background:#fff;color:var(--c-primary)}
.channel.active{color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:700}
/* ---------- offcanvas ---------- */
.offcanvas{background:var(--c-surface)}
.offcanvas-header{border-bottom:1px solid var(--c-line)}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--c-secondary)}
.oc-nav{display:grid;gap:4px;margin-top:8px}
.oc-nav a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--c-text-2)}
.oc-nav a:hover{background:var(--c-surface-alt);color:var(--c-primary)}
.oc-nav a.active{background:var(--c-primary-soft);color:var(--c-primary-hover);font-weight:600}
/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:var(--c-surface-alt)}
.section-head{max-width:780px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:6px 16px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3}
.section-head h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:var(--c-primary);margin-top:16px}
.section-sub{margin-top:14px;font-size:16px;color:var(--c-text-2);line-height:1.85;max-width:720px}
/* ---------- category hero ---------- */
.cat-hero{
  position:relative;padding:56px 0 52px;background:var(--c-surface-alt);
  border-bottom:1px solid var(--c-line);
  background-image:radial-gradient(rgba(240,86,58,.16) 1px,transparent 1px);
  background-size:18px 18px;
}
.cat-hero-inner{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:center}
.breadcrumb-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb-row a{color:var(--c-text-2)}
.breadcrumb-row a:hover{color:var(--c-primary)}
.breadcrumb-row span.sep{opacity:.6}
.cat-hero h1{font-size:clamp(28px,3.4vw,42px);line-height:1.24;color:var(--c-secondary)}
.cat-hero h1 .hl{color:var(--c-primary)}
.cat-lead{margin-top:16px;font-size:16px;color:var(--c-text-2);line-height:1.85;max-width:640px}
.cat-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cat-badge{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);
  border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--c-text-2);
  box-shadow:var(--shadow-1);
}
.cat-badge i{color:var(--c-primary)}
.cat-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-2);padding:24px;
}
.cat-panel h2{font-size:15px;font-weight:700;color:var(--c-secondary);margin-bottom:14px;letter-spacing:0}
.cat-panel ul{list-style:none;padding:0;display:grid;gap:12px}
.cat-panel li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;align-items:flex-start}
.cat-panel li i{color:var(--c-mint);margin-top:4px;font-size:13px}
.cat-panel .panel-note{margin-top:16px;padding-top:14px;border-top:1px dashed var(--c-line);font-size:13px;color:var(--c-text-3);line-height:1.7}
/* ---------- post grid ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.post-thumb{display:block;position:relative;aspect-ratio:16/9;background:var(--c-surface-alt);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-thumb::after{content:"";position:absolute;inset:0;background:rgba(240,86,58,.06);pointer-events:none}
.post-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17px;font-weight:600;line-height:1.5}
.post-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--c-text)}
.post-body h3 a:hover{color:var(--c-primary)}
.post-body p{font-size:14px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--c-text-3);margin-top:auto;padding-top:6px;flex-wrap:wrap}
.post-meta i{margin-right:5px}
.list-more{display:flex;justify-content:center;margin-top:40px}
/* ---------- empty state ---------- */
.empty-state{
  min-height:220px;background:var(--c-surface-alt);border:1px dashed var(--c-line);
  border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:36px 24px;
}
.empty-state i{font-size:30px;color:var(--c-text-3)}
.empty-state p{font-size:15px;color:var(--c-text-2)}
/* ---------- explain ---------- */
.explain-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:44px;align-items:start}
.explain-body h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:22px}
.explain-body h3{font-size:19px;line-height:1.5;margin:28px 0 12px;padding-left:14px;border-left:4px solid var(--c-primary);border-radius:2px}
.explain-body h3:first-of-type{margin-top:0}
.explain-body p{font-size:15.5px;color:var(--c-text-2);line-height:1.9;margin-bottom:16px}
.explain-body p strong{color:var(--c-secondary);font-weight:600}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:24px;position:sticky;top:120px;
}
.aside-card h3{font-size:16px;margin-bottom:14px;color:var(--c-secondary)}
.aside-card ol{margin:0;padding-left:18px;display:grid;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.aside-card li::marker{color:var(--c-primary);font-weight:700}
.aside-card .aside-tip{
  margin-top:18px;background:var(--c-primary-soft);border-radius:var(--radius-sm);
  padding:14px 16px;font-size:13.5px;color:var(--c-primary-hover);line-height:1.7;
}
/* ---------- tag wall ---------- */
.tag-wall{display:flex;flex-wrap:wrap;gap:12px}
.tag{
  display:inline-flex;align-items:center;gap:7px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:999px;padding:9px 18px;font-size:14px;color:var(--c-text-2);
  box-shadow:var(--shadow-1);transition:transform .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tag::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--c-primary);transform:rotate(45deg)}
.tag:hover{transform:translateY(-2px);color:var(--c-primary-hover);border-color:var(--c-primary-soft);box-shadow:var(--shadow-2)}
/* ---------- picks ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.pick-card{
  display:flex;gap:18px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-md);padding:14px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.pick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft)}
.pick-thumb{flex:0 0 152px;aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;background:var(--c-surface-alt);position:relative}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-thumb::after{content:"";position:absolute;inset:0;background:rgba(240,86,58,.06)}
.pick-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.pick-body h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-body h3 a:hover{color:var(--c-primary)}
.pick-body p{font-size:13.5px;color:var(--c-text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-body .post-meta{padding-top:2px}
/* ---------- tips ---------- */
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tip-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:28px 24px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.tip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.tip-num{
  font-size:42px;font-weight:700;line-height:1;color:var(--c-primary-soft);
  letter-spacing:-.03em;margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.tip-card h3{font-size:17px;margin-bottom:10px}
.tip-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.8}
.tip-card::after{
  content:"";position:absolute;right:-26px;bottom:-26px;width:86px;height:86px;border-radius:50%;
  background:rgba(255,177,105,.14);
}
/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-acc .accordion-item{
  border:1px solid var(--c-line);border-radius:var(--radius-md);overflow:hidden;
  margin-bottom:12px;background:var(--c-surface);box-shadow:var(--shadow-1);
}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  background:var(--c-surface);font-size:16px;font-weight:600;color:var(--c-text);
  padding:18px 22px;border-left:3px solid transparent;box-shadow:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--c-primary-soft);color:var(--c-primary-hover);border-left-color:var(--c-primary);
  box-shadow:none;
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::after{
  background-image:none;content:"+";width:26px;height:26px;flex:0 0 26px;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;
  color:var(--c-primary);transition:transform .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-acc .accordion-body{font-size:15px;color:var(--c-text-2);line-height:1.85;padding:6px 22px 22px}
/* ---------- related ---------- */
.related-wrap{display:grid;grid-template-columns:1.6fr 1fr;gap:44px;align-items:start}
.related-list{list-style:none;padding:0;display:grid;gap:0}
.related-list li{
  border-bottom:1px solid var(--c-line);padding:16px 0;display:flex;gap:14px;align-items:flex-start;
}
.related-list li:first-child{padding-top:0}
.related-list li:last-child{border-bottom:0;padding-bottom:0}
.related-list i{color:var(--c-primary);font-size:13px;margin-top:6px}
.related-list a{font-size:15.5px;font-weight:500;color:var(--c-text);line-height:1.65}
.related-list a:hover{color:var(--c-primary)}
.related-list time{display:block;font-size:12.5px;color:var(--c-text-3);margin-top:4px}
.back-card{
  background:var(--c-secondary);color:#F6E9F0;border-radius:var(--radius-lg);padding:30px 26px;
  box-shadow:var(--shadow-2);
}
.back-card h3{color:#fff;font-size:18px;margin-bottom:10px}
.back-card p{color:rgba(255,255,255,.74);font-size:14px;line-height:1.8;margin-bottom:18px}
.back-card .btn.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);box-shadow:none}
.back-card .btn.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:var(--c-accent)}
.back-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--c-primary);margin-top:18px}
.back-link i{font-size:12px;transition:transform .2s ease}
.back-link:hover i{transform:translateX(-3px)}
/* ---------- footer ---------- */
.site-footer{background:var(--c-secondary);color:rgba(255,255,255,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-logo{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-logo strong{color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66)}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);line-height:1.6}
.footer-col a:hover{color:var(--c-accent)}
.footer-col a:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;display:flex;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.58);
}
/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .cat-hero-inner{grid-template-columns:1fr;gap:28px}
  .explain-grid{grid-template-columns:1fr;gap:30px}
  .aside-card{position:static}
  .related-wrap{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .nav-search{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .section{padding:64px 0}
  .tips-grid{grid-template-columns:1fr}
  .pick-grid{grid-template-columns:1fr}
}
@media (max-width:767.98px){
  .container{padding:0 16px}
  .brandbar-inner{height:66px;gap:12px}
  .brand-text strong{font-size:15px}
  .brand-text em{display:none}
  .brandbar-actions .btn{display:none}
  .cat-hero{padding:40px 0 38px}
  .cat-hero h1{font-size:clamp(26px,7vw,32px)}
  .cat-lead{font-size:15px}
  .section{padding:52px 0}
  .post-grid{grid-template-columns:1fr}
  .pick-card{flex-direction:column}
  .pick-thumb{flex:0 0 auto;width:100%;aspect-ratio:16/9}
  .explain-body h3{font-size:17px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px}
  .channel{padding:13px 14px;font-size:14px}
  .channelbar-inner{padding-left:2px}
}
@media (max-width:520px){
  .btn{width:100%}
  .btn.btn-sm{width:auto}
  .list-more .btn{width:auto}
  .cat-badge{font-size:12px;padding:7px 13px}
  .post-body{padding:16px}
  .tip-card{padding:22px 18px}
}