/* roulang page: index */
:root{
  --sugar-primary:#F08A3C;
  --sugar-primary-deep:#C9642A;
  --sugar-berry:#5E2A55;
  --sugar-bg:#FFF8F1;
  --sugar-surface:#FFFFFF;
  --sugar-surface-2:#F6E9DC;
  --sugar-ink:#2B1F1A;
  --sugar-ink-2:#6B5A50;
  --sugar-mint:#1F9E8F;
  --sugar-line:#EADCCB;
  --radius-card:16px;
  --radius-lg:18px;
  --radius-sm:12px;
  --shadow-warm:0 12px 28px -14px rgba(94,42,85,.08);
  --shadow-warm-hover:0 20px 36px -16px rgba(94,42,85,.14);
  --section-y:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--sugar-bg);
  color:var(--sugar-ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--sugar-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

.section{padding:var(--section-y) 0}
@media (max-width:768px){.section{padding:52px 0}}
.section-alt{background:var(--sugar-surface-2)}
.section-plain{background:var(--sugar-surface)}

.section-no{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--sugar-primary);
  margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.section-title{font-size:clamp(24px,2.4vw,28px);color:var(--sugar-berry);font-weight:700}
.section-desc{margin-top:12px;color:var(--sugar-ink-2);font-size:15.5px;max-width:760px}
.dot-divider{
  height:6px;
  margin:26px 0;
  background-image:radial-gradient(circle, var(--sugar-primary) 1.5px, transparent 1.6px);
  background-size:14px 6px;
  background-repeat:repeat-x;
  opacity:.5;
}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,248,241,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--sugar-line);
  transition:box-shadow .22s ease-out;
}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(94,42,85,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(240,138,60,.12)}
.brand-text{font-size:19px;font-weight:700;color:var(--sugar-berry);letter-spacing:-0.01em}
.main-nav{display:none;align-items:center;gap:30px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;font-size:15px;color:var(--sugar-ink-2);padding:6px 2px;transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:3px;border-radius:999px;
  background:var(--sugar-primary);transform:translateX(-50%);transition:width .2s ease-out;
}
.nav-link:hover{color:var(--sugar-berry)}
.nav-link:hover::after{width:18px}
.nav-link.active{color:var(--sugar-berry);font-weight:600}
.nav-link.active::after{width:18px}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border-radius:12px;
  border:1px solid var(--sugar-primary);background:transparent;cursor:pointer;
}
.menu-toggle span{display:block;height:2px;border-radius:2px;background:var(--sugar-primary);transition:transform .2s ease-out,opacity .2s ease-out}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{
  display:none;
  position:fixed;inset:68px 0 0;background:var(--sugar-bg);z-index:55;
  padding:20px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.drawer-link{
  display:flex;align-items:center;gap:14px;height:56px;padding:0 6px;
  border-bottom:1px solid var(--sugar-line);color:var(--sugar-ink);font-size:16px;
}
.drawer-link .no{font-size:12.5px;color:var(--sugar-primary);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.drawer-cta{margin-top:22px;display:block;text-align:center}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out;
  white-space:nowrap;
}
.btn .arrow{transition:transform .22s ease-out}
.btn-primary{background:var(--sugar-primary);color:#fff;padding:12px 24px;font-size:15px}
.btn-primary:hover{background:var(--sugar-primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-warm)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:#fff;border-color:var(--sugar-line);color:var(--sugar-ink);padding:12px 24px;font-size:15px}
.btn-ghost:hover{border-color:var(--sugar-primary);color:var(--sugar-primary);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed}

/* 标签 */
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(31,158,143,.1);color:var(--sugar-mint);font-size:12.5px;font-weight:500;
}
.chip-cream{background:var(--sugar-surface-2);color:var(--sugar-ink-2)}
.ep{
  display:inline-flex;align-items:center;justify-content:center;height:22px;min-width:44px;padding:0 8px;
  border-radius:7px;background:var(--sugar-primary);color:#fff;font-size:12px;font-weight:600;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.ep-soft{background:rgba(240,138,60,.14);color:var(--sugar-primary-deep)}

/* 卡片 */
.card{
  position:relative;background:var(--sugar-surface);border:1px solid var(--sugar-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-warm);overflow:hidden;
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-warm-hover)}
.card-hover-line:hover{border-color:var(--sugar-primary)}
.fold::before{
  content:"";position:absolute;left:0;top:0;width:6px;height:6px;background:var(--sugar-primary);
  border-bottom-right-radius:6px;z-index:2;
}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.progress{height:4px;border-radius:999px;background:var(--sugar-line);overflow:hidden}
.progress > i{display:block;height:100%;border-radius:999px;background:var(--sugar-primary)}
.progress-mint > i{background:var(--sugar-mint)}

.thumb{position:relative;background:var(--sugar-surface-2);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .thumb img{transform:scale(1.03)}

/* Hero */
.flash-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  background:var(--sugar-berry);color:#fff;border-radius:14px;
  padding:12px 18px;margin:24px 0 30px;font-size:14px;
}
.flash-dot{width:8px;height:8px;border-radius:50%;background:var(--sugar-primary);flex:0 0 auto}
.flash-label{font-weight:600;letter-spacing:.02em}
.flash-time{
  font-variant-numeric:tabular-nums;font-weight:700;font-size:16px;
  background:rgba(255,255,255,.14);padding:2px 12px;border-radius:999px;
}
.flash-text{color:rgba(255,255,255,.76);flex:1 1 220px;min-width:0}
.flash-link{color:var(--sugar-primary);font-weight:600;white-space:nowrap}
.flash-link:hover{color:#fff}

.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--sugar-primary-deep);
  background:rgba(240,138,60,.12);border-radius:999px;padding:5px 14px;
}
.hero h1{font-size:clamp(26px,4vw,38px);color:var(--sugar-berry);margin-top:18px;line-height:1.28}
.hero-sub{margin-top:14px;font-size:17px;color:var(--sugar-ink);font-weight:500}
.hero-desc{margin-top:16px;color:var(--sugar-ink-2);font-size:15.5px;max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px}
.hero-stats li{font-size:13px;color:var(--sugar-ink-2)}
.hero-stats strong{display:block;font-size:22px;color:var(--sugar-berry);font-variant-numeric:tabular-nums;font-weight:700;line-height:1.3}

.hero-cards{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:16px;align-items:start}
.hero-main-card{grid-row:span 2}
.hero-side-card{margin-top:22px}
.hero-side-card.second{margin-top:0}

/* 网格 */
.grid-2{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}}
.grid-3{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.grid-4{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:560px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}}
.split-5-7{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.split-5-7{grid-template-columns:5fr 7fr;gap:48px}}
.split-7-5{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.split-7-5{grid-template-columns:7fr 5fr;gap:48px}}
.mosaic-23{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.mosaic-23{grid-template-columns:repeat(6,1fr)}}
.mosaic-wide{grid-column:span 1}
@media (min-width:768px){.mosaic-wide{grid-column:span 3}}
.mosaic-small{grid-column:span 1}
@media (min-width:768px){.mosaic-small{grid-column:span 2}}

/* 痛点条 */
.pain-item{display:flex;gap:14px;align-items:flex-start;padding:20px;border-radius:var(--radius-card);background:var(--sugar-surface);border:1px solid var(--sugar-line)}
.pain-no{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(240,138,60,.14);color:var(--sugar-primary-deep);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.pain-item h3{font-size:16.5px;color:var(--sugar-berry)}
.pain-item p{margin-top:6px;font-size:14px;color:var(--sugar-ink-2)}

/* 对勾列表 */
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:16px 0;border-bottom:1px dashed var(--sugar-line)}
.check-list li:last-child{border-bottom:none}
.check-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:rgba(31,158,143,.12);
  color:var(--sugar-mint);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.check-list h3{font-size:16.5px;color:var(--sugar-ink)}
.check-list p{margin-top:4px;font-size:14px;color:var(--sugar-ink-2)}

/* 步骤时间轴 */
.steps{display:grid;grid-template-columns:1fr;gap:22px;position:relative}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:20px}}
.step{position:relative;padding-top:26px}
.step::before{
  content:"";position:absolute;top:11px;left:0;right:0;height:1px;background:var(--sugar-line);
}
@media (min-width:768px){.step:last-child::before{right:auto;width:100%}}
.step-no{
  position:relative;z-index:2;display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;background:var(--sugar-primary);color:#fff;
  font-size:11.5px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step h3{margin-top:14px;font-size:16.5px;color:var(--sugar-berry)}
.step p{margin-top:6px;font-size:14px;color:var(--sugar-ink-2)}

/* 横滑轨 */
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--sugar-line);border-radius:999px}
.rail-item{flex:0 0 220px;scroll-snap-align:start}
@media (min-width:768px){.rail-item{flex:0 0 236px}}

/* 日历 */
.calendar{display:flex;gap:14px;overflow-x:auto;padding-bottom:12px}
.cal-day{
  flex:0 0 148px;background:var(--sugar-surface);border:1px solid var(--sugar-line);
  border-radius:14px;padding:16px;transition:border-color .2s ease-out,transform .2s ease-out;
}
.cal-day:hover{border-color:var(--sugar-primary);transform:translateY(-2px)}
.cal-day.today{background:var(--sugar-surface-2);border-color:var(--sugar-primary)}
.cal-date{font-size:13px;color:var(--sugar-ink-2);font-variant-numeric:tabular-nums}
.cal-title{margin-top:8px;font-size:15px;font-weight:600;color:var(--sugar-berry)}
.cal-note{margin-top:6px;font-size:13px;color:var(--sugar-ink-2)}

/* 时间线 */
.tl{border-left:1px solid var(--sugar-line);padding-left:22px;margin-top:8px}
.tl li{position:relative;padding-bottom:24px}
.tl li:last-child{padding-bottom:0}
.tl li::before{
  content:"";position:absolute;left:-28px;top:8px;width:10px;height:10px;border-radius:50%;
  background:var(--sugar-mint);box-shadow:0 0 0 4px rgba(31,158,143,.12);
}
.tl-date{font-size:13px;color:var(--sugar-ink-2);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tl-text{margin-top:4px;font-size:15px;color:var(--sugar-ink)}

/* 数据带 */
.band{background:var(--sugar-berry);color:#fff;border-radius:20px;padding:48px 32px}
@media (max-width:640px){.band{padding:34px 22px}}
.band h2{color:#fff;font-size:clamp(22px,2.4vw,26px)}
.band .section-no{color:var(--sugar-primary)}
.band-desc{color:rgba(255,255,255,.72);margin-top:12px;font-size:15px;max-width:680px}
.band-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:34px}
@media (min-width:900px){.band-grid{grid-template-columns:repeat(4,1fr)}}
.band-num{font-size:34px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2}
.band-num::after{content:"";display:block;width:28px;height:3px;border-radius:999px;background:var(--sugar-primary);margin-top:12px}
.band-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.76)}

/* 证言 */
.quote-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:1024px){.quote-grid{grid-template-columns:repeat(12,1fr)}}
.quote-card{padding:24px}
@media (min-width:1024px){
  .quote-a{grid-column:span 7}
  .quote-b{grid-column:span 5;margin-top:26px}
  .quote-c{grid-column:span 7;margin-top:-6px}
}
.avatar{
  width:38px;height:38px;border-radius:50%;background:var(--sugar-surface-2);color:var(--sugar-berry);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.stars{color:var(--sugar-primary);letter-spacing:2px;font-size:14px}

/* 人群卡 */
.persona{padding:22px;border:1px solid var(--sugar-line);border-radius:var(--radius-card);background:var(--sugar-surface);transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out}
.persona:hover{transform:translateY(-2px);border-color:var(--sugar-primary);box-shadow:var(--shadow-warm)}
.persona-icon{width:38px;height:38px;border-radius:12px;background:rgba(94,42,85,.08);color:var(--sugar-berry);display:flex;align-items:center;justify-content:center}
.persona h3{margin-top:14px;font-size:16.5px;color:var(--sugar-berry)}
.persona p{margin-top:6px;font-size:14px;color:var(--sugar-ink-2)}

/* 对照 */
.compare{display:grid;grid-template-columns:1fr;gap:22px;position:relative}
@media (min-width:768px){.compare{grid-template-columns:1fr 1fr;gap:34px}}
.compare::after{
  content:"";display:none;position:absolute;left:50%;top:6px;bottom:6px;border-left:1px dashed var(--sugar-line);
}
@media (min-width:768px){.compare::after{display:block}}
.compare-box{padding:24px;border-radius:var(--radius-card);background:var(--sugar-surface);border:1px solid var(--sugar-line)}
.compare-box.after{border-color:var(--sugar-primary);box-shadow:var(--shadow-warm)}
.compare-box h3{font-size:16.5px;color:var(--sugar-berry)}
.compare-box li{padding:10px 0;border-bottom:1px dashed var(--sugar-line);font-size:14.5px;color:var(--sugar-ink-2)}
.compare-box li:last-child{border-bottom:none}
.compare-box.after li{color:var(--sugar-ink)}

/* 条形图 */
.bar-row{display:grid;grid-template-columns:96px 1fr 52px;gap:14px;align-items:center;padding:11px 0}
.bar-track{height:8px;border-radius:999px;background:var(--sugar-line);overflow:hidden}
.bar-fill{height:100%;border-radius:999px}
.bar-val{font-size:13px;color:var(--sugar-ink-2);font-variant-numeric:tabular-nums;text-align:right}

/* FAQ */
.faq-item{border-bottom:1px solid var(--sugar-line);padding:16px 0}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;
  font-size:16px;font-weight:600;color:var(--sugar-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--sugar-surface-2);
  color:var(--sugar-primary-deep);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.faq-item[open] summary .sign{background:rgba(240,138,60,.16)}
.faq-item p{
  margin-top:12px;padding-left:14px;border-left:3px solid var(--sugar-primary);
  font-size:14.5px;color:var(--sugar-ink-2);
}

/* 表单 */
.form-card{padding:28px}
.form-label{display:block;font-size:13.5px;font-weight:600;color:var(--sugar-berry);margin-bottom:7px}
.form-field{
  width:100%;border:1px solid var(--sugar-line);border-radius:var(--radius-sm);
  background:#fff;padding:11px 14px;font-size:15px;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.form-field:focus{outline:none;border-color:var(--sugar-primary);box-shadow:0 0 0 2px rgba(240,138,60,.22)}
.form-hint{margin-top:10px;font-size:13px;color:var(--sugar-ink-2)}
.form-note{margin-top:14px;font-size:13px;color:var(--sugar-berry)}

/* 资讯条目 */
.post-row{display:grid;grid-template-columns:1fr;gap:16px;padding:18px 0;border-bottom:1px dashed var(--sugar-line);transition:background-color .2s ease-out}
.post-row:hover{background:rgba(246,233,220,.45)}
@media (min-width:768px){.post-row{grid-template-columns:132px 1fr auto;align-items:center;gap:22px}}
.post-row:last-child{border-bottom:none}
.post-thumb{width:100%;aspect-ratio:16/10;border-radius:14px;overflow:hidden;background:var(--sugar-surface-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover}

/* 结尾 CTA */
.cta-band{background:var(--sugar-berry);border-radius:22px;padding:46px 32px;color:#fff}
@media (max-width:640px){.cta-band{padding:34px 22px}}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-band p{color:rgba(255,255,255,.76);margin-top:12px;max-width:620px;font-size:15px}
.text-link{color:var(--sugar-primary);font-weight:600}
.text-link:hover{color:#fff}

/* 页脚 */
.site-footer{background:var(--sugar-berry);color:rgba(255,255,255,.82);margin-top:80px;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.site-footer h3{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:14px}
.site-footer a{color:rgba(255,255,255,.8);font-size:14px;line-height:2.1}
.site-footer a:hover{color:var(--sugar-primary)}
.footer-desc{margin-top:14px;font-size:14px;color:rgba(255,255,255,.68);max-width:320px}
.footer-tip{margin-top:12px;font-size:13px;color:var(--sugar-primary)}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62);
}

.fade-up{opacity:0;transform:translateY(14px);transition:opacity .25s ease-out,transform .25s ease-out}
.fade-up.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .fade-up{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
 --sugar-primary:#F08A3C;
 --sugar-primary-deep:#C9642A;
 --sugar-berry:#5E2A55;
 --sugar-bg:#FFF8F1;
 --sugar-surface:#FFFFFF;
 --sugar-surface-2:#F6E9DC;
 --sugar-ink:#2B1F1A;
 --sugar-ink-2:#6B5A50;
 --sugar-mint:#1F9E8F;
 --sugar-line:#EADCCB;
 --radius-card:16px;
 --radius-lg:18px;
 --radius-sm:12px;
 --shadow-warm:0 12px 28px -14px rgba(94,42,85,.08);
 --shadow-warm-hover:0 20px 36px -16px rgba(94,42,85,.14);
 --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 background:var(--sugar-bg);
 color:var(--sugar-ink);
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
 font-size:16px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--sugar-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:var(--section-y) 0}}
.section-alt{background:var(--sugar-surface-2)}
.section-plain{background:var(--sugar-surface)}
.section-no{
 display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
 color:var(--sugar-primary);margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.section-title{font-size:clamp(22px,2.4vw,28px);color:var(--sugar-berry);font-weight:700;letter-spacing:-0.01em;line-height:1.4}
.section-desc{margin-top:12px;color:var(--sugar-ink-2);font-size:15.5px;max-width:780px}
.dot-divider{
 height:6px;margin:26px 0;
 background-image:radial-gradient(circle,var(--sugar-primary) 1.5px,transparent 1.6px);
 background-size:14px 6px;background-repeat:repeat-x;opacity:.5;
}
/* 头部 */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,248,241,.9);
 backdrop-filter:blur(8px);
 border-bottom:1px solid var(--sugar-line);
 transition:box-shadow .22s ease-out;
}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(94,42,85,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(240,138,60,.12);flex:0 0 auto}
.brand-text{font-size:19px;font-weight:700;color:var(--sugar-berry);letter-spacing:-0.01em}
.main-nav{display:none}
.nav-link{position:relative;font-size:15px;color:var(--sugar-ink-2);padding:6px 2px;transition:color .2s ease-out}
.nav-link::after{
 content:"";position:absolute;left:50%;bottom:-2px;width:0;height:3px;border-radius:999px;
 background:var(--sugar-primary);transform:translateX(-50%);transition:width .2s ease-out;
}
.nav-link:hover{color:var(--sugar-berry)}
.nav-link:hover::after{width:18px}
.nav-link.active{color:var(--sugar-berry);font-weight:600}
.nav-link.active::after{width:18px}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
 display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
 width:44px;height:44px;padding:0 11px;border-radius:12px;
 border:1px solid var(--sugar-primary);background:transparent;cursor:pointer;
}
.menu-toggle span{display:block;height:2px;border-radius:2px;background:var(--sugar-primary);transition:transform .2s ease-out,opacity .2s ease-out}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
 display:none;position:fixed;inset:68px 0 0;background:var(--sugar-bg);z-index:55;
 padding:20px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.drawer-link{
 display:flex;align-items:center;gap:14px;height:56px;padding:0 6px;
 border-bottom:1px solid var(--sugar-line);color:var(--sugar-ink);font-size:16px;
}
.drawer-link .no{font-size:12.5px;color:var(--sugar-primary);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.drawer-cta{margin-top:22px;display:block;text-align:center}
@media (min-width:1024px){
 .main-nav{display:flex;align-items:center;gap:30px}
 .menu-toggle{display:none}
 .mobile-drawer{display:none!important}
}
/* 按钮 */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 border-radius:999px;font-weight:600;border:1px solid transparent;cursor:pointer;
 transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out;
 white-space:nowrap;min-height:44px;
}
.btn .arrow{transition:transform .22s ease-out}
.btn-primary{background:var(--sugar-primary);color:#fff;padding:12px 24px;font-size:15px}
.btn-primary:hover{background:var(--sugar-primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-warm)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:#fff;border-color:var(--sugar-line);color:var(--sugar-ink);padding:12px 24px;font-size:15px}
.btn-ghost:hover{border-color:var(--sugar-primary);color:var(--sugar-primary);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
/* 标签 */
.chip{
 display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
 background:rgba(31,158,143,.1);color:var(--sugar-mint);font-size:12.5px;font-weight:500;
}
.chip-cream{background:var(--sugar-surface-2);color:var(--sugar-ink-2)}
.ep-badge{
 display:inline-flex;align-items:center;justify-content:center;
 min-width:46px;height:24px;padding:0 8px;border-radius:6px;
 background:var(--sugar-primary);color:#fff;font-size:12px font-weight:600;
 font-size:12px;font-weight:600;letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
/* 卡片 */
.card{
 position:relative;background:var(--sugar-surface);border:1px solid var(--sugar-line);
 border-radius:var(--radius-card);box-shadow:var(--shadow-warm);overflow:hidden;
 transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-warm-hover);border-color:var(--sugar-primary)}
.thumb{position:relative;overflow:hidden;background:var(--sugar-surface-2)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .thumb img{transform:scale(1.03)}
.img-fallback{background:var(--sugar-surface-2);
 background-image:radial-gradient(circle,rgba(240,138,60,.35) 2px,transparent 2.1px);
 background-size:16px 16px}
/* 分类页头 */
.cat-head{padding:32px 0 28px;background:var(--sugar-bg);border-bottom:1px solid var(--sugar-line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--sugar-ink-2);margin-bottom:14px}
.crumb a{color:var(--sugar-ink-2)}
.crumb a:hover{color:var(--sugar-primary)}
.crumb .sep{color:var(--sugar-line)}
.cat-head-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:end}
@media (min-width:1024px){.cat-head-grid{grid-template-columns:7fr 5fr;gap:40px}}
.cat-title{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--sugar-berry);letter-spacing:-0.01em;line-height:1.3}
.cat-title em{font-style:normal;color:var(--sugar-primary)}
.cat-lead{margin-top:10px;color:var(--sugar-ink-2);font-size:15.5px;max-width:640px}
.stat-tags{display:flex;flex-wrap:wrap;gap:10px}
.stat-tag{
 display:flex;flex-direction:column;justify-content:center;gap:2px;
 min-width:132px;padding:12px 16px;border-radius:14px;
 background:var(--sugar-surface);border:1px solid var(--sugar-line);box-shadow:var(--shadow-warm);
}
.stat-tag b{font-size:19px;color:var(--sugar-berry);font-variant-numeric:tabular-nums}
.stat-tag span{font-size:12.5px;color:var(--sugar-ink-2)}
/* 工具条 */
.toolbar{
 background:var(--sugar-surface-2);border:1px solid var(--sugar-line);border-radius:var(--radius-lg);
 padding:16px 18px;display:flex;flex-direction:column;gap:14px;
}
@media (min-width:1024px){.toolbar{flex-direction:row;align-items:center;justify-content:space-between;gap:24px}}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px}
.filter-tab{
 border:1px solid transparent;background:#fff;color:var(--sugar-ink-2);
 height:38px;padding:0 16px;border-radius:999px;font-size:14px;cursor:pointer;
 transition:all .2s ease-out;
}
.filter-tab:hover{color:var(--sugar-primary);border-color:var(--sugar-line)}
.filter-tab.is-active{background:var(--sugar-primary);color:#fff;border-color:var(--sugar-primary);font-weight:600}
.sort-group{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--sugar-ink-2)}
.sort-btn{
 height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--sugar-line);
 background:#fff;color:var(--sugar-ink-2);font-size:13.5px;cursor:pointer;transition:all .2s ease-out;
}
.sort-btn:hover{border-color:var(--sugar-primary);color:var(--sugar-primary)}
.sort-btn.is-active{border-color:var(--sugar-primary);color:var(--sugar-primary);font-weight:600;background:rgba(240,138,60,.08)}
/* 列表网格 */
.lib-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px}
@media (min-width:768px){.lib-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (min-width:1024px){.lib-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1280px){.lib-grid{grid-template-columns:repeat(4,1fr)}}
.lib-card{display:flex;flex-direction:column}
.lib-card .thumb{aspect-ratio:16/10;border-radius:0}
.lib-card .ep-badge{position:absolute;left:12px;top:12px;z-index:2}
.lib-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.lib-title{font-size:16px;font-weight:600;color:var(--sugar-berry);line-height:1.5;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px}
.lib-sum{font-size:13.8px;color:var(--sugar-ink-2);line-height:1.7;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lib-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px dashed var(--sugar-line)}
.lib-tag{font-size:12.5px;color:var(--sugar-mint);background:rgba(31,158,143,.1);border-radius:999px;padding:3px 10px}
.lib-date{font-size:12.5px;color:var(--sugar-ink-2);font-variant-numeric:tabular-nums}
.progress{height:4px;border-radius:999px;background:var(--sugar-line);overflow:hidden}
.progress i{display:block;height:100%;border-radius:999px;background:var(--sugar-primary)}
/* 更多与页码 */
.more-wrap{margin-top:34px;display:flex;flex-direction:column;align-items:center;gap:20px}
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px}
.pager a,.pager span{
 display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;
 border-radius:12px;border:1px solid var(--sugar-line);background:#fff;font-size:14px;color:var(--sugar-ink-2);
 font-variant-numeric:tabular-nums;transition:all .2s ease-out;
}
.pager a:hover{border-color:var(--sugar-primary);color:var(--sugar-primary)}
.pager .current{background:var(--sugar-primary);border-color:var(--sugar-primary);color:#fff;font-weight:600}
/* 精选条目 */
.feat-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.feat-item{
 display:grid;grid-template-columns:1fr;gap:0;
 border:1px solid var(--sugar-line);border-radius:var(--radius-card);overflow:hidden;background:#fff;
 box-shadow:var(--shadow-warm);transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.feat-item:hover{transform:translateY(-2px);border-color:var(--sugar-primary);box-shadow:var(--shadow-warm-hover)}
@media (min-width:768px){.feat-item{grid-template-columns:240px 1fr}}
.feat-item .thumb{aspect-ratio:16/10;height:100%}
.feat-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px}
.feat-body h3{font-size:17.5px;color:var(--sugar-berry);font-weight:600;line-height:1.5}
.feat-body p{font-size:14.5px;color:var(--sugar-ink-2);line-height:1.75}
.feat-more{font-size:13.5px;color:var(--sugar-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;margin-top:4px}
.feat-more .arrow{transition:transform .2s ease-out}
.feat-item:hover .feat-more .arrow{transform:translateX(4px)}
/* 使用指南 */
.guide-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;margin-top:28px}
@media (min-width:1024px){.guide-grid{grid-template-columns:5fr 7fr;gap:44px}}
.guide-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--sugar-line);box-shadow:var(--shadow-warm)}
.guide-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.guide-steps{display:flex;flex-direction:column;gap:18px}
.guide-step{display:flex;gap:16px;align-items:flex-start}
.guide-step .num{
 flex:0 0 auto;width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;
 background:rgba(240,138,60,.12);color:var(--sugar-primary-deep);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;
}
.guide-step h3{font-size:16.5px;color:var(--sugar-berry);font-weight:600}
.guide-step p{font-size:14.5px;color:var(--sugar-ink-2);margin-top:4px}
/* 指标卡内嵌 */
.metric-inline{
 display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;
}
@media (min-width:768px){.metric-inline{grid-template-columns:repeat(4,1fr)}}
.metric-box{
 background:#fff;border:1px solid var(--sugar-line);border-radius:14px;padding:18px;box-shadow:var(--shadow-warm);
}
.metric-box b{display:block;font-size:26px;color:var(--sugar-berry);font-variant-numeric:tabular-nums;line-height:1.2}
.metric-box .bar{height:3px;width:34px;border-radius:999px;background:var(--sugar-primary);margin:10px 0 8px}
.metric-box span{font-size:13.5px;color:var(--sugar-ink-2)}
/* FAQ */
.faq-list{margin-top:26px;border-top:1px solid var(--sugar-line)}
.faq-item{border-bottom:1px solid var(--sugar-line)}
.faq-item summary{
 list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:18px 0;font-size:16px;font-weight:600;color:var(--sugar-berry);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{
 flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
 border:1px solid var(--sugar-line);color:var(--sugar-primary);font-size:16px;line-height:1;transition:all .2s ease-out;
}
.faq-item[open] summary .sign{background:rgba(240,138,60,.12);border-color:var(--sugar-primary)}
.faq-item .faq-body{
 padding:0 0 20px 16px;border-left:3px solid var(--sugar-primary);
 color:var(--sugar-ink-2);font-size:15px;line-height:1.8;margin-bottom:6px;
}
/* 窄 CTA */
.cta-narrow{
 margin-top:34px;background:var(--sugar-berry);border-radius:var(--radius-lg);
 padding:28px 24px;display:flex;flex-direction:column;gap:18px;align-items:flex-start;
 box-shadow:var(--shadow-warm);
}
@media (min-width:768px){.cta-narrow{flex-direction:row;align-items:center;justify-content:space-between;padding:30px 34px}}
.cta-narrow h2{color:#fff;font-size:20px;font-weight:700;line-height:1.5}
.cta-narrow p{color:rgba(255,248,241,.78);font-size:14px;margin-top:6px}
/* 页脚 */
.site-footer{background:var(--sugar-berry);color:#F6E9DC;padding:60px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{color:rgba(255,248,241,.78);font-size:14.5px;line-height:1.8;margin:14px 0 10px;max-width:340px}
.footer-tip{
 display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#fff;
 background:rgba(255,255,255,.1);border-radius:999px;padding:5px 14px;
}
.footer-tip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--sugar-mint)}
.site-footer h3{font-size:15px;color:#fff;margin:0 0 14px;font-weight:600}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a{color:rgba(255,248,241,.76);font-size:14.5px;transition:color .2s ease-out}
.site-footer ul a:hover{color:var(--sugar-primary)}
.footer-bottom{
 border-top:1px solid rgba(255,248,241,.18);padding:18px 0;
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:13.5px;color:rgba(255,248,241,.7);
}