/* roulang page: index */
:root{
  --bg:#0E1512;
  --surface:#141F1A;
  --surface-alt:#1B2A23;
  --primary:#B4F461;
  --primary-hover:#C9FF7A;
  --accent:#FFB454;
  --text:#E7F0EA;
  --text-secondary:#A0AEA7;
  --border:rgba(255,255,255,0.08);
  --border-strong:rgba(255,255,255,0.14);
  --error:#FF5B54;
  --deep:#0C120F;
  --radius:16px;
  --radius-sm:8px;
  --shadow:0 16px 40px rgba(0,0,0,0.45);
  --glow:0 0 24px rgba(180,244,97,0.08);
  --transition:250ms ease;
  --header-height:100px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--text);text-decoration:none;transition:color var(--transition),border-color var(--transition),background var(--transition),box-shadow var(--transition),transform var(--transition);}
a:hover{color:var(--primary);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;}
input,button,textarea{font-family:inherit;font-size:inherit;color:inherit;}
::selection{background:var(--primary);color:var(--bg);}

.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ===== Buttons ===== */
.button{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;line-height:1;padding:0 28px;margin:0;
  background:var(--primary);color:var(--bg);border:1px solid var(--primary);
  border-radius:var(--radius-sm);font-size:15px;font-weight:700;cursor:pointer;
  transition:all var(--transition);
}
.button:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:var(--bg);}
.button:active{transform:scale(0.97);}
.button:focus{outline:2px solid var(--primary);outline-offset:2px;}
.button.btn-lg{height:52px;padding:0 36px;font-size:16px;}
.button.btn-secondary{background:transparent;border:1px solid rgba(255,255,255,0.2);color:var(--text);}
.button.btn-secondary:hover{border-color:var(--primary);color:var(--primary);background:transparent;}
.button.btn-dark{background:transparent;border:1px solid rgba(255,255,255,0.2);color:var(--text);}
.button.btn-dark:hover{border-color:var(--primary);color:var(--primary);background:rgba(180,244,97,0.06);}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(14,21,18,0.95);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.brand-bar{height:56px;display:flex;align-items:center;justify-content:space-between;}
.brand-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);}
.brand-logo i{color:var(--primary);font-size:20px;}
.brand-logo:hover{color:var(--primary);}
.brand-bar .button{height:36px;padding:0 20px;font-size:13px;border-radius:6px;}
.channel-bar{background:var(--deep);border-top:1px solid var(--border);min-height:44px;}
.channel-nav{display:flex;align-items:center;gap:2px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;display:block;flex-shrink:0;padding:12px 18px;
  font-size:14px;font-weight:500;color:var(--text-secondary);white-space:nowrap;
}
.channel-nav a:hover{color:var(--primary);}
.channel-nav a.active{color:var(--primary);}
.channel-nav a.active::after{
  content:'';position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--primary);
  border-radius:2px 2px 0 0;
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:620px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(rgba(14,21,18,0.55),rgba(14,21,18,0.82)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:88px 0 72px;text-align:center;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(180,244,97,0.035) 1px,transparent 1px),linear-gradient(90deg,rgba(180,244,97,0.035) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(180,244,97,0.4);background:rgba(180,244,97,0.08);
  border-radius:999px;padding:7px 18px;font-size:13px;font-weight:500;color:var(--primary);
  margin-bottom:24px;letter-spacing:0.02em;
}
.hero h1{font-size:48px;line-height:1.18;font-weight:800;letter-spacing:-0.01em;color:var(--text);margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--text-secondary);margin-bottom:34px;line-height:1.7;}
.hero-search{
  display:flex;max-width:620px;margin:0 auto 24px;background:var(--deep);
  border:1px solid rgba(255,255,255,0.12);border-radius:var(--radius-sm);overflow:hidden;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.hero-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(180,244,97,0.25);}
.hero-search input{
  flex:1;min-width:0;background:transparent;border:none;height:52px;padding:0 20px;
  color:var(--text);font-size:15px;outline:none;
}
.hero-search input::placeholder{color:rgba(160,174,167,0.7);}
.hero-search .button{
  flex-shrink:0;height:52px;border-radius:0;padding:0 30px;border:none;
}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:44px;}
.hero-stats{
  display:flex;justify-content:center;gap:56px;flex-wrap:wrap;
  border-top:1px solid var(--border);padding-top:36px;
}
.hero-stat{text-align:center;}
.hero-stat strong{display:block;font-size:28px;font-weight:800;color:var(--primary);line-height:1.2;letter-spacing:0.02em;}
.hero-stat:first-child strong{color:var(--accent);}
.hero-stat span{display:block;font-size:13px;color:var(--text-secondary);margin-top:6px;}

/* ===== Sections ===== */
.section{padding:88px 0;}
.section-alt{background:var(--surface);}
.section-alt2{background:var(--surface-alt);}
.section-head{margin-bottom:52px;}
.section-head .section-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--primary);
  background:rgba(180,244,97,0.1);border:1px solid rgba(180,244,97,0.2);
  border-radius:999px;padding:5px 15px;margin-bottom:16px;letter-spacing:0.04em;
}
.section-head h2{font-size:36px;line-height:1.3;font-weight:800;color:var(--text);margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text-secondary);max-width:680px;line-height:1.75;}
.section-head.center{text-align:center;}
.section-head.center p{margin-left:auto;margin-right:auto;}

/* ===== Channel Cards ===== */
.channel-section{background:var(--bg);border-top:1px solid var(--border);}
.channel-card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:linear-gradient(180deg,#16201B,#111A16);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 26px;transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition);
}
.channel-card:hover{
  transform:translateY(-4px);border-color:var(--primary);
  box-shadow:0 16px 40px rgba(0,0,0,0.45),0 0 24px rgba(180,244,97,0.08);
}
.channel-card .card-icon{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:rgba(180,244,97,0.1);border-radius:10px;margin-bottom:16px;
}
.channel-card .card-icon i{font-size:20px;color:var(--primary);font-weight:400;}
.channel-card h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;line-height:1.4;}
.channel-card p{font-size:14px;line-height:1.65;color:var(--text-secondary);margin-bottom:16px;flex:1;}
.channel-card .card-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--primary);
}
.channel-card .card-link::after{content:'→';transition:transform var(--transition);}
.channel-card:hover .card-link::after{transform:translateX(4px);}
.channel-card.featured{
  border-color:rgba(180,244,97,0.45);background:linear-gradient(180deg,#1B2A23,#14201A);
  box-shadow:0 12px 32px rgba(0,0,0,0.3),inset 0 1px 0 rgba(255,255,255,0.04);
}
.channel-card.featured:hover{border-color:var(--primary);box-shadow:0 16px 40px rgba(0,0,0,0.45),0 0 28px rgba(180,244,97,0.12);}
.featured-badge{
  position:absolute;top:18px;right:18px;font-size:11px;font-weight:700;color:var(--accent);
  background:rgba(255,180,84,0.12);border:1px solid rgba(255,180,84,0.3);
  border-radius:999px;padding:3px 10px;
}

/* ===== Guide ===== */
.guide-section{background:var(--surface-alt);}
.guide-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:52px;}
.guide-step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;transition:all var(--transition);}
.guide-step:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.3);}
.guide-step .step-num{font-size:32px;font-weight:800;color:var(--primary);line-height:1;margin-bottom:14px;font-family:'DIN Alternate','Arial Narrow',sans-serif;letter-spacing:0.02em;}
.guide-step:nth-child(2n) .step-num{color:var(--accent);}
.guide-step h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:8px;}
.guide-step p{font-size:14px;color:var(--text-secondary);line-height:1.65;margin-bottom:14px;}
.guide-step .step-icon{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;background:rgba(180,244,97,0.1);border-radius:8px;margin-bottom:12px;}
.guide-step .step-icon i{font-size:14px;color:var(--primary);}
.guide-media{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.guide-media figure{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--border);}
.guide-media img{width:100%;height:220px;object-fit:cover;border-radius:12px;}
.guide-media figcaption{position:absolute;left:14px;bottom:14px;background:rgba(14,21,18,0.82);color:var(--text);font-size:13px;font-weight:600;padding:5px 12px;border-radius:6px;backdrop-filter:blur(6px);}

/* ===== News ===== */
.news-section{background:var(--surface-alt);border-top:1px solid var(--border);}
.news-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;
  transition:all var(--transition);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 16px 40px rgba(0,0,0,0.4),0 0 20px rgba(180,244,97,0.06);}
.news-badge{
  display:inline-block;width:max-content;font-size:12px;font-weight:600;color:var(--primary);
  background:rgba(180,244,97,0.1);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.news-card h3{font-size:17px;font-weight:700;color:var(--text);line-height:1.5;margin-bottom:10px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.news-card p{font-size:14px;color:var(--text-secondary);line-height:1.65;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:16px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-secondary);}
.news-meta i{color:var(--primary);font-size:12px;}
.news-empty{
  border:1px dashed var(--border-strong);border-radius:var(--radius);
  padding:48px 24px;text-align:center;color:var(--text-secondary);font-size:15px;
  background:rgba(14,21,18,0.3);
}

/* ===== Plan ===== */
.plan-section{background:var(--bg);}
.plan-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:32px 30px;
  transition:all var(--transition);position:relative;
}
.plan-card:hover{border-color:var(--border-strong);transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,0.4);}
.plan-card.recommended{
  border-color:var(--primary);background:linear-gradient(180deg,#1B2A23,#141F1A);
  box-shadow:0 16px 44px rgba(0,0,0,0.45),0 0 28px rgba(180,244,97,0.1);
  transform:translateY(-8px);
}
.plan-card.recommended:hover{transform:translateY(-10px);}
.recommend-tag{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--primary);color:var(--bg);font-size:12px;font-weight:700;
  border-radius:999px;padding:5px 16px;letter-spacing:0.04em;white-space:nowrap;
}
.plan-card h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:10px;}
.plan-card .plan-desc{font-size:14px;color:var(--text-secondary);margin-bottom:22px;line-height:1.65;}
.plan-card .plan-price{font-size:32px;font-weight:800;color:var(--primary);line-height:1;margin-bottom:24px;}
.plan-card.recommended .plan-price{color:var(--primary);}
.plan-list{flex:1;margin-bottom:28px;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-secondary);padding:7px 0;line-height:1.6;}
.plan-list li i{color:var(--primary);font-size:13px;margin-top:4px;}
.plan-card .button{width:100%;}
.plan-card.recommended .button{background:var(--primary);}

/* ===== FAQ ===== */
.faq-section{background:var(--surface);}
.faq-wrap{max-width:820px;margin:0 auto;}
.accordion{margin:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--deep);}
.accordion-item{border-bottom:1px solid var(--border);}
.accordion-item:last-child{border-bottom:none;}
.accordion-title{
  position:relative;display:block;padding:20px 56px 20px 24px;
  font-size:16px;font-weight:600;line-height:1.5;color:var(--text);
  background:transparent;border:none;transition:color var(--transition);
}
.accordion-title:hover,.accordion-title:focus{color:var(--primary);background:rgba(180,244,97,0.04);}
.accordion-title::after{
  content:'+';position:absolute;right:22px;top:18px;font-size:22px;line-height:1;
  color:var(--primary);font-weight:400;transition:transform var(--transition);
}
.accordion-item.is-active > .accordion-title::after{content:'−';}
.accordion-content{
  background:transparent;border:none;padding:0 24px 22px;
  color:var(--text-secondary);font-size:15px;line-height:1.8;
}
.accordion-content p{margin-bottom:0;}

/* ===== CTA ===== */
.cta-section{background:var(--bg);position:relative;overflow:hidden;}
.cta-section::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 50% 100%,rgba(180,244,97,0.1),transparent 70%);
}
.cta-box{
  position:relative;text-align:center;border:1px solid var(--border);
  background:linear-gradient(180deg,#16201B,#111A16);
  border-radius:20px;padding:72px 32px;
}
.cta-box h2{font-size:32px;font-weight:800;color:var(--text);margin-bottom:16px;}
.cta-box p{font-size:16px;color:var(--text-secondary);max-width:560px;margin:0 auto 36px;line-height:1.7;}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ===== Footer ===== */
.site-footer{background:#0A0F0D;border-top:1px solid var(--border);padding:60px 0 32px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-brand .brand-logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.7;max-width:300px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-secondary);}
.footer-col ul a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--text-secondary);
}

/* ===== Floating CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:52px;height:52px;border-radius:50%;
  background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 32px rgba(0,0,0,0.4),0 0 20px rgba(180,244,97,0.25);
  opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition);
  font-size:18px;cursor:pointer;
}
.float-cta.visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--primary-hover);transform:translateY(-2px);}
.float-cta:active{transform:scale(0.97);}
.float-cta:focus{outline:2px solid var(--primary);outline-offset:3px;}
.float-cta .float-text{
  position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);
  background:var(--deep);border:1px solid var(--border-strong);color:var(--text);
  font-size:13px;font-weight:600;border-radius:6px;padding:6px 14px;white-space:nowrap;
  opacity:0;visibility:hidden;transition:all var(--transition);pointer-events:none;
}
.float-cta:hover .float-text{opacity:1;visibility:visible;}

/* ===== Keyframes / misc ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}
.hero-inner>*{animation:fadeInUp 600ms ease both;}
.hero-inner>*:nth-child(2){animation-delay:100ms;}
.hero-inner>*:nth-child(3){animation-delay:200ms;}
.hero-inner>*:nth-child(4){animation-delay:300ms;}
.hero-inner>*:nth-child(5){animation-delay:400ms;}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .guide-steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:640px){
  .section{padding:48px 0;}
  .hero{padding:56px 0 48px;min-height:auto;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15px;margin-bottom:24px;}
  .hero-stats{gap:32px;padding-top:28px;}
  .hero-stat strong{font-size:22px;}
  .guide-steps{grid-template-columns:1fr;gap:16px;margin-bottom:32px;}
  .guide-media{grid-template-columns:1fr;}
  .guide-media img{height:180px;}
  .section-head h2{font-size:26px;}
  .section-head{margin-bottom:32px;}
  .hero-search{flex-direction:column;}
  .hero-search .button{border-radius:0 0 var(--radius-sm) var(--radius-sm);}
  .hero-actions .button{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .float-cta{width:48px;height:48px;right:16px;bottom:16px;}
  .hero-actions{gap:10px;}
  .channel-nav a{padding:12px 14px;font-size:13px;}
}

/* roulang page: article */
:root {
  --bg: #0E1512;
  --surface: #141F1A;
  --surface-alt: #1B2A23;
  --primary: #B4F461;
  --primary-hover: #C9FF7A;
  --accent: #FFB454;
  --text: #E7F0EA;
  --text-secondary: #A0AEA7;
  --border: rgba(255,255,255,0.08);
  --error: #FF5B54;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 16px 40px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 24px rgba(180,244,97,0.08);
  --font-sans: "PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",-apple-system,sans-serif;
  --font-num: "DIN Alternate","Bahnschrift","Arial Narrow",sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 108px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 250ms ease, border-color 250ms ease, background 250ms ease;
}

a:hover {
  color: var(--primary);
}

ul, ol {
  padding-left: 1.5em;
}

button, input, textarea {
  font-family: var(--font-sans);
}

.grid-container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==================== Foundation 覆盖 ==================== */
.button {
  background: var(--primary);
  color: var(--bg);
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  font-weight: 700;
  height: 40px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 250ms ease, background 250ms ease, box-shadow 250ms ease, border-color 250ms ease, color 250ms ease;
  font-size: 14px;
  line-height: 1;
  margin: 0;
  cursor: pointer;
}

.button:hover {
  background: var(--primary-hover);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(180,244,97,0.18);
}

.button:active {
  transform: scale(0.97);
}

.button:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

a:focus:not(:focus-visible) {
  outline: none;
}

/* ==================== Header ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14,21,18,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand-bar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}

.brand-logo i {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--bg);
  border-radius: 6px;
  font-size: 13px;
}

.brand-logo span {
  white-space: nowrap;
}

.brand-bar .button {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 8px;
  white-space: nowrap;
}

.channel-bar {
  border-top: 1px solid rgba(255,255,255,0.04);
  background: #0F1714;
}

.channel-nav {
  height: 44px;
  display: flex;
  align-items: center;
  gap: 30px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  position: relative;
  height: 44px;
  display: flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  transition: color 250ms ease, border-color 250ms ease;
}

.channel-nav a:hover {
  color: var(--primary);
}

.channel-nav a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ==================== 面包屑 ==================== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 250ms ease;
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .separator {
  color: rgba(255,255,255,0.25);
}

.breadcrumb .current {
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

/* ==================== 文章头部 ==================== */
.article-hero {
  padding: 72px 0 64px;
  background: linear-gradient(rgba(14,21,18,0.55), rgba(14,21,18,0.88)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(180,244,97,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.article-hero .grid-container {
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: rgba(180,244,97,0.12);
  border: 1px solid rgba(180,244,97,0.35);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-tag);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.article-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 840px;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 26px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.meta-line span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.meta-line i {
  color: var(--primary);
  font-size: 13px;
  opacity: 0.85;
}

.article-summary {
  max-width: 720px;
  border-left: 4px solid var(--primary);
  background: rgba(20,31,26,0.72);
  border-radius: 0 8px 8px 0;
  padding: 16px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ==================== 正文区 ==================== */
.article-main {
  padding: 64px 0 56px;
  background: var(--bg);
}

.article-content-wrap {
  max-width: 760px;
  margin: 0 auto;
}

.article-content {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

.article-content > * + * {
  margin-top: 1.2em;
}

.article-content h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin: 48px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.article-content h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin: 36px 0 16px;
}

.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 1.2em;
}

.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(180,244,97,0.35);
}

.article-content a:hover {
  color: var(--primary-hover);
  border-bottom-color: var(--primary);
}

.article-content ul,
.article-content ol {
  margin: 1em 0 1.4em;
  padding-left: 1.6em;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 10px;
}

.article-content ul li::marker {
  color: var(--primary);
}

.article-content ol li::marker {
  color: var(--accent);
  font-weight: 700;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--surface);
  border-radius: 0 8px 8px 0;
  padding: 16px 24px;
  margin: 1.6em 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content img {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 1.6em 0;
  object-fit: cover;
}

.article-content figure {
  margin: 1.6em 0;
}

.article-content figure img {
  margin: 0;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 8px;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 15px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.article-content th {
  background: var(--surface-alt);
  color: var(--text);
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
}

.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.article-content tr:nth-child(odd) td {
  background: rgba(27,42,35,0.4);
}

.article-content tr:last-child td {
  border-bottom: none;
}

.article-content code {
  background: #0C120F;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
  color: var(--primary);
}

.article-content pre {
  background: #0C120F;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.6em 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  line-height: 1.7;
}

.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.article-content strong {
  color: var(--text);
  font-weight: 700;
}

/* ==================== 内容未找到 ==================== */
.not-found {
  text-align: center;
  padding: 80px 24px;
  background: var(--surface);
  border: 1px dashed rgba(180,244,97,0.3);
  border-radius: var(--radius-card);
}

.not-found i {
  font-size: 44px;
  color: var(--accent);
  margin-bottom: 20px;
  display: inline-block;
}

.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ==================== 标签区 ==================== */
.article-tags-section {
  padding: 8px 0 40px;
  background: var(--bg);
}

.tags-row {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  background: rgba(180,244,97,0.08);
  border: 1px solid rgba(180,244,97,0.18);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-tag);
  transition: background 250ms ease, border-color 250ms ease;
}

.tag:hover {
  background: rgba(180,244,97,0.15);
  border-color: rgba(180,244,97,0.4);
}

/* ==================== 相关推荐 ==================== */
.related-section {
  padding: 72px 0;
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.related-section .section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 16px;
}

.related-section .section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.related-section .section-head .more-link {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-section .section-head .more-link:hover {
  color: var(--primary);
}

.related-grid {
  row-gap: 24px;
}

.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform 250ms ease, border-color 250ms ease, box-shadow 250ms ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.related-card .card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: none;
  border-radius: 0;
  transition: transform 250ms ease;
}

.related-card:hover .card-img img {
  transform: scale(1.04);
}

.related-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,21,18,0.35), transparent 50%);
  pointer-events: none;
}

.related-card .card-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1;
  margin-bottom: 0;
  background: rgba(14,21,18,0.78);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(180,244,97,0.3);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
}

.related-card .related-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card .related-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
  transition: color 250ms ease;
}

.related-card:hover .related-body h3 {
  color: var(--primary);
}

.related-card .related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  flex: 1;
}

.related-card .related-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

.related-card .related-foot .time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-card .related-foot .time i {
  font-size: 11px;
  color: var(--accent);
}

.related-card .related-foot .arrow {
  color: var(--primary);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform 250ms ease;
}

.related-card:hover .related-foot .arrow {
  transform: translateX(3px);
}

/* ==================== 返回CTA ==================== */
.article-cta {
  padding: 72px 0;
  background: var(--bg);
  text-align: center;
}

.article-cta .cta-inner {
  max-width: 560px;
  margin: 0 auto;
}

.article-cta h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.article-cta p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 15px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.cta-buttons .button {
  height: 48px;
  padding: 0 32px;
  font-size: 15px;
}

.cta-buttons .button.secondary {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text);
}

.cta-buttons .button.secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(180,244,97,0.06);
}

/* ==================== Footer ==================== */
.site-footer {
  background: #0A0F0D;
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .brand-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 280px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 250ms ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== 浮动CTA ==================== */
.floating-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(180,244,97,0.35), 0 0 24px rgba(180,244,97,0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 250ms ease, transform 250ms ease, background 250ms ease, box-shadow 250ms ease, width 300ms ease;
  font-size: 16px;
  white-space: nowrap;
}

.floating-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.floating-cta:hover {
  background: var(--primary-hover);
  color: var(--bg);
  box-shadow: 0 12px 32px rgba(180,244,97,0.45), 0 0 32px rgba(180,244,97,0.2);
  width: auto;
  padding: 0 20px;
  border-radius: 26px;
  gap: 8px;
}

.floating-cta span {
  display: none;
}

.floating-cta:hover span {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
}

.floating-cta:active {
  transform: scale(0.97);
}

/* ==================== 响应式 ==================== */
@media screen and (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .article-hero h1 {
    font-size: 36px;
  }
}

@media screen and (max-width: 768px) {
  .grid-container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .brand-bar {
    height: 52px;
  }

  .brand-logo {
    font-size: 15px;
    gap: 8px;
  }

  .brand-logo i {
    width: 24px;
    height: 24px;
    font-size: 11px;
  }

  .brand-bar .button {
    padding: 0 12px;
    font-size: 13px;
  }

  .channel-nav {
    gap: 20px;
  }

  .article-hero {
    padding: 44px 0 40px;
  }

  .article-hero h1 {
    font-size: 28px;
    line-height: 1.25;
  }

  .meta-line {
    gap: 8px 16px;
    font-size: 13px;
  }

  .article-main {
    padding: 40px 0 32px;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.8;
  }

  .article-content h2 {
    font-size: 24px;
  }

  .article-content h3 {
    font-size: 19px;
  }

  .related-section {
    padding: 48px 0;
  }

  .related-section .section-head {
    flex-direction: column;
    gap: 8px;
  }

  .related-section .section-head h2 {
    font-size: 24px;
  }

  .article-cta {
    padding: 48px 0;
  }

  .article-cta h2 {
    font-size: 24px;
  }

  .cta-buttons .button {
    height: 44px;
    padding: 0 24px;
    font-size: 14px;
  }

  .site-footer {
    padding: 48px 0 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }

  .floating-cta {
    right: 20px;
    bottom: 20px;
    width: 48px;
    height: 48px;
    font-size: 15px;
  }
}

@media screen and (max-width: 520px) {
  .grid-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-logo span {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .breadcrumb .current {
    max-width: 130px;
  }

  .article-summary {
    padding: 14px 16px;
    font-size: 14px;
  }

  .meta-line {
    gap: 6px 12px;
  }

  .related-card .related-body h3 {
    font-size: 16px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-buttons .button {
    width: 100%;
    max-width: 280px;
  }
}

/* roulang page: category1 */
:root {
  --bg: #0E1512;
  --surface: #141F1A;
  --surface-alt: #1B2A23;
  --primary: #B4F461;
  --primary-hover: #C9FF7A;
  --accent: #FFB454;
  --text: #E7F0EA;
  --text-secondary: #A0AEA7;
  --border: rgba(255,255,255,0.08);
  --error: #FF5B54;
  --radius: 16px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 16px 40px rgba(0,0,0,0.45), 0 0 24px rgba(180,244,97,0.08);
  --shadow-float: 0 8px 24px rgba(0,0,0,0.35);
  --transition: 250ms ease;
  --font-sans: "PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",-apple-system,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-hover); }
p { margin-bottom: 1.2em; }
ul, ol { list-style: none; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14,21,18,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand-bar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}
.brand-logo:hover { color: var(--primary); }
.brand-logo i { color: var(--primary); font-size: 18px; }
.brand-bar .button {
  height: 36px;
  line-height: 34px;
  padding: 0 18px;
  background: var(--primary);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14px;
  border: 1px solid transparent;
  transition: all var(--transition);
  margin: 0;
}
.brand-bar .button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(180,244,97,0.2);
}
.brand-bar .button:active { transform: scale(0.97); }
.brand-bar .button:focus-visible,
.channel-nav a:focus-visible,
.button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.channel-bar {
  background: #0F1714;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.channel-nav {
  display: flex;
  align-items: center;
  height: 44px;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  flex-shrink: 0;
  line-height: 44px;
}
.channel-nav a:hover { color: var(--primary); }
.channel-nav a.active { color: var(--primary); }
.channel-nav a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px 2px 0 0;
}

/* ===== Button styles ===== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  transition: all var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1;
}
.button-primary {
  background: var(--primary);
  color: var(--bg);
}
.button-primary:hover {
  background: var(--primary-hover);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(180,244,97,0.18);
}
.button-primary:active { transform: scale(0.97); }
.button-secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
}
.button-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.button-secondary:active { transform: scale(0.97); }
.button-large { height: 52px; padding: 0 32px; font-size: 16px; }
.button-sm { height: 36px; padding: 0 14px; font-size: 14px; }

/* ===== Section common ===== */
main { overflow: hidden; }
.section-header {
  margin-bottom: 42px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(180,244,97,0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 640px;
}

/* ===== Category Hero ===== */
.category-hero {
  position: relative;
  padding: 88px 0 96px;
  background-image:
    linear-gradient(rgba(14,21,18,0.62), rgba(14,21,18,0.88)),
    url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(180,244,97,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180,244,97,0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.category-hero .grid-container { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--primary);
  background: rgba(180,244,97,0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
}
.category-hero h1 {
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  color: var(--text);
}
.category-hero h1 .h1-accent {
  color: var(--accent);
}
.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== Category Intro ===== */
.category-intro {
  padding: 88px 0;
  background: var(--bg);
}
.intro-content .section-tag { margin-bottom: 14px; }
.intro-content h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}
.intro-content > p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.intro-list {
  display: grid;
  gap: 12px;
}
.intro-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color var(--transition);
}
.intro-list li:hover { border-color: rgba(180,244,97,0.4); }
.intro-list li i {
  color: var(--primary);
  font-size: 15px;
}
.intro-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}
.intro-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ===== Entry List ===== */
.entry-list {
  padding: 88px 0;
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.entry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
}
.entry-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}
.entry-card .card-cover {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.entry-card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.entry-card:hover .card-cover img { transform: scale(1.04); }
.entry-card .card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-meta-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,180,84,0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.entry-card h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
  transition: color var(--transition);
}
.entry-card:hover h3 { color: var(--primary); }
.entry-card .card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
  flex: 1;
}
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.card-footer .card-date {
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-footer .card-read {
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-footer i { font-size: 12px; }
.card-link-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* ===== Usage Scene ===== */
.usage-scene {
  padding: 88px 0;
  background: var(--bg);
}
.scene-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}
.scene-card .scene-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(180,244,97,0.1);
  color: var(--primary);
  font-size: 22px;
  margin-bottom: 18px;
}
.scene-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.scene-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ===== Process Steps ===== */
.process-steps {
  padding: 88px 0;
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.step-wrapper {
  position: relative;
}
.step-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition);
}
.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(180,244,97,0.5);
}
.step-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 16px;
  font-family: "DIN Alternate", "Bahnschrift", sans-serif;
}
.step-num.step-primary { color: var(--primary); }
.step-num.step-accent { color: var(--accent); }
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(180,244,97,0.08);
  color: var(--primary);
  font-size: 18px;
  margin-bottom: 14px;
}
.step-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
.step-connector {
  position: absolute;
  top: 50%;
  right: -16px;
  width: 32px;
  height: 2px;
  background-image: linear-gradient(90deg, var(--primary) 50%, transparent 50%);
  background-size: 8px 2px;
  z-index: 2;
  display: none;
}

/* ===== FAQ ===== */
.category-faq {
  padding: 88px 0;
  background: var(--bg);
}
.accordion {
  max-width: 860px;
  margin: 0 auto;
  background: transparent;
  border: none;
  border-radius: 0;
}
.accordion-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.accordion-item:hover,
.accordion-item.is-active {
  border-color: rgba(180,244,97,0.4);
}
.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border: none;
  line-height: 1.4;
  transition: color var(--transition);
}
.accordion-title:hover,
.accordion-item.is-active .accordion-title {
  color: var(--primary);
  background: transparent;
}
.accordion-title::before,
.accordion-title::after {
  display: none;
}
.accordion-title .acc-icon {
  color: var(--primary);
  font-size: 14px;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.accordion-item.is-active .acc-icon {
  transform: rotate(45deg);
}
.accordion-content {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid rgba(255,255,255,0.04);
  background: transparent;
}
.accordion-content[data-tab-content] {
  padding-top: 16px;
}

/* ===== CTA ===== */
.category-cta {
  padding: 76px 0;
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  text-align: center;
}
.category-cta h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text);
}
.category-cta p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0A0F0D;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand-logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 340px;
  margin: 0;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.3s ease;
}
.float-cta.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.float-cta:hover {
  width: auto;
  padding: 0 20px;
  border-radius: 26px;
  background: var(--primary-hover);
  color: var(--bg);
}
.float-cta span {
  display: none;
  font-size: 14px;
  white-space: nowrap;
}
.float-cta:hover span { display: inline; }
.float-cta:active { transform: scale(0.97); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .category-hero {
    padding: 56px 0 64px;
  }
  .category-intro,
  .entry-list,
  .usage-scene,
  .process-steps,
  .category-faq {
    padding: 56px 0;
  }
  .hero-actions .button {
    width: 100%;
  }
  .intro-figure {
    margin-top: 28px;
  }
  .step-connector { display: none; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .brand-logo {
    font-size: 15px;
  }
  .brand-logo i {
    font-size: 16px;
  }
  .brand-bar .button {
    padding: 0 14px;
    font-size: 13px;
    height: 34px;
    line-height: 32px;
  }
  .channel-nav a {
    padding: 0 12px;
    font-size: 13px;
  }
  .category-hero h1 {
    font-size: 26px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .section-header h2 {
    font-size: 22px;
  }
  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
    font-size: 18px;
  }
  .accordion-title {
    font-size: 15px;
    padding: 16px 18px;
  }
  .accordion-content {
    padding: 0 18px 16px;
  }
  .entry-card .card-body {
    padding: 18px;
  }
}