/* roulang page: index */
:root{
  --color-brand:#B5452B;
  --color-brand-dark:#8E3420;
  --color-brand-light:#E9CBB9;
  --color-accent:#496253;
  --color-highlight:#C5923B;
  --color-bg:#F7F1E6;
  --color-surface:#FFFFFF;
  --color-border:#E5D8C4;
  --color-text:#2E231C;
  --color-text-secondary:#7C6B5B;
  --color-danger:#D24726;
  --color-success:#3F8E5E;
  --shadow-card:0 8px 24px rgba(63,36,18,0.08);
  --shadow-hover:0 14px 34px rgba(63,36,18,0.14);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:var(--color-brand);text-decoration:none;transition:color .2s;}
a:hover{color:var(--color-brand-dark);}
button{font-family:inherit;border:none;background:none;cursor:pointer;font-size:1rem;}
input,textarea{font-family:inherit;font-size:1rem;}
ul,ol{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section__head{max-width:680px;margin-bottom:40px;}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section__eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--color-brand);background:rgba(181,69,43,0.08);padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:10px;letter-spacing:.02em;}
.section__title{font-size:clamp(26px,3.5vw,36px);line-height:1.25;font-weight:800;color:var(--color-text);margin-bottom:12px;}
.section__desc{font-size:16px;color:var(--color-text-secondary);line-height:1.7;}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:15px;font-weight:700;padding:12px 24px;border-radius:var(--radius-btn);transition:all .2s;border:2px solid transparent;cursor:pointer;white-space:nowrap;}
.btn--primary{background:var(--color-brand);color:#FFF;}
.btn--primary:hover{background:var(--color-brand-dark);box-shadow:0 6px 16px rgba(181,69,43,0.28);transform:translateY(-1px);color:#fff;}
.btn--ghost{background:transparent;border-color:var(--color-brand);color:var(--color-brand);}
.btn--ghost:hover{background:rgba(181,69,43,0.08);color:var(--color-brand-dark);}
.btn--sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn--block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--color-brand);outline-offset:2px;}

.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;line-height:1;}
.badge--danger{background:var(--color-danger);color:#fff;}
.badge--hot{background:var(--color-highlight);color:#fff;box-shadow:0 0 12px rgba(197,146,59,0.35);}
.badge--success{background:var(--color-success);color:#fff;}
.badge--highlight{background:var(--color-highlight);color:#2E231C;}
.badge--outline{background:rgba(181,69,43,0.08);color:var(--color-brand);}

.site-header{position:sticky;top:0;z-index:100;height:72px;background:rgba(247,241,230,0.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);}
.nav{display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__logo{width:40px;height:40px;border-radius:50%;background:var(--color-brand);color:#F7F1E6;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;line-height:1;flex-shrink:0;}
.brand__name{font-size:19px;font-weight:800;color:var(--color-text);letter-spacing:.01em;white-space:nowrap;}
.nav__links{display:flex;align-items:center;gap:32px;}
.nav__link{font-size:15px;color:var(--color-text);font-weight:500;position:relative;padding:6px 0;transition:color .2s;}
.nav__link::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--color-brand);transition:width .25s;border-radius:2px;}
.nav__link:hover{color:var(--color-brand);}
.nav__link:hover::after{width:100%;}
.nav__link.is-active{color:var(--color-brand);}
.nav__link.is-active::after{width:100%;}
.nav__cta{display:flex;align-items:center;gap:12px;}
.nav__status{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--color-danger);background:rgba(210,71,38,0.08);border:1px solid rgba(210,71,38,0.2);padding:4px 12px;border-radius:var(--radius-pill);white-space:nowrap;}
.nav__status-dot{width:6px;height:6px;border-radius:50%;background:var(--color-danger);animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(1.4);}}
.nav__toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--color-border);background:var(--color-surface);flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:border-color .2s;}
.nav__toggle:hover{border-color:var(--color-brand);}
.nav__toggle span{width:18px;height:2px;background:var(--color-text);border-radius:2px;transition:background .2s;}

.hero{position:relative;padding:72px 0 80px;overflow:hidden;}
.hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;filter:saturate(.9);}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(115deg,var(--color-bg) 52%,rgba(247,241,230,0.72) 75%,rgba(247,241,230,0.25) 100%);}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero__title{font-size:clamp(34px,5vw,52px);line-height:1.2;font-weight:800;margin-bottom:18px;letter-spacing:-.01em;}
.hero__title span{color:var(--color-brand);}
.hero__lead{font-size:17px;color:var(--color-text-secondary);max-width:460px;margin-bottom:28px;line-height:1.7;}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px;}
.hero__meta{display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:var(--color-text-secondary);}
.hero__meta strong{color:var(--color-text);font-weight:700;font-variant-numeric:tabular-nums;}
.hero__stage{position:relative;}
.hero-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:box-shadow .25s;}
.hero-card:hover{box-shadow:var(--shadow-hover);}
.hero-card__cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.hero-card__cover img{width:100%;height:100%;object-fit:cover;}
.hero-card__badges{position:absolute;left:12px;top:12px;display:flex;gap:6px;}
.hero-card__body{padding:16px 18px 18px;}
.hero-card__title{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:10px;}
.hero-card__meta{display:flex;justify-content:space-between;gap:10px;font-size:13px;color:var(--color-text-secondary);}
.hero-card__btn{margin-top:14px;}
.hero-mini{position:absolute;left:-28px;bottom:-26px;width:158px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;box-shadow:var(--shadow-hover);padding:14px;transform:rotate(-5deg);z-index:3;transition:transform .25s;}
.hero-mini:hover{transform:rotate(0deg) translateY(-2px);}
.hero-mini__title{font-size:14px;font-weight:700;line-height:1.5;margin:8px 0 4px;color:var(--color-text);}
.hero-mini__meta{font-size:12px;color:var(--color-text-secondary);}

.boards-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.board-card{position:relative;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:all .25s;}
.board-card:hover{border-color:var(--color-brand-light);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.board-card__icon{width:44px;height:44px;border-radius:10px;background:rgba(181,69,43,0.1);color:var(--color-brand);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:14px;}
.board-card__name{font-size:18px;font-weight:700;margin-bottom:6px;}
.board-card__desc{font-size:14px;color:var(--color-text-secondary);line-height:1.65;margin-bottom:12px;}
.board-card__footer{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--color-text-secondary);border-top:1px solid var(--color-border);padding-top:12px;}
.board-card__link{color:var(--color-brand);font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:transform .2s;}
.board-card:hover .board-card__link{transform:translateX(4px);}

.stats-section{background:var(--color-text);color:#F7F1E6;}
.stats-section .section__title{color:#F7F1E6;}
.stats-section .section__desc{color:rgba(247,241,230,0.66);}
.stats-section .section__eyebrow{background:rgba(247,241,230,0.1);color:#F7F1E6;}
.stats-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.stat-item{padding:8px 0;}
.stat-num{font-size:clamp(40px,5vw,56px);font-weight:800;color:#F7F1E6;font-variant-numeric:tabular-nums;line-height:1.1;}
.stat-label{margin-top:8px;font-size:14px;color:rgba(247,241,230,0.66);}
.rank-list{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-card);padding:20px 22px;}
.rank-list__title{font-size:16px;font-weight:700;color:#F7F1E6;margin-bottom:6px;display:flex;align-items:center;gap:8px;}
.rank-list__desc{font-size:13px;color:rgba(247,241,230,0.55);margin-bottom:12px;}
.rank-item{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,0.08);}
.rank-item:last-child{border-bottom:none;}
.rank-avatar{width:34px;height:34px;border-radius:50%;background:var(--color-brand-light);color:var(--color-brand-dark);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;}
.rank-name{flex:1;font-size:14px;color:#F7F1E6;font-weight:500;}
.rank-count{font-size:12px;color:rgba(247,241,230,0.65);background:rgba(255,255,255,0.08);padding:3px 10px;border-radius:var(--radius-pill);white-space:nowrap;}

.topics-layout{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.posts-list{display:flex;flex-direction:column;gap:16px;}
.post-card{display:flex;gap:16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:16px;box-shadow:var(--shadow-card);transition:all .25s;}
.post-card:hover{border-color:var(--color-brand-light);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.post-card__cover{flex:0 0 120px;aspect-ratio:4/3;border-radius:12px;overflow:hidden;}
.post-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.post-card:hover .post-card__cover img{transform:scale(1.04);}
.post-card__body{flex:1;min-width:0;}
.post-card__title{font-size:17px;font-weight:700;line-height:1.45;margin:6px 0;}
.post-card__title a{color:var(--color-text);}
.post-card__title a:hover{color:var(--color-brand);}
.post-card__excerpt{font-size:14px;color:var(--color-text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;}
.post-card__meta{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--color-text-secondary);}
.post-card__meta span{display:inline-flex;align-items:center;gap:4px;}
.side-widget{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card);margin-bottom:20px;}
.side-widget:last-child{margin-bottom:0;}
.side-widget__title{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-widget__title::before{content:'';width:4px;height:18px;border-radius:2px;background:var(--color-brand);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{font-size:13px;color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-border);padding:6px 14px;border-radius:var(--radius-pill);transition:all .2s;}
.tag:hover{color:var(--color-brand);border-color:var(--color-brand);background:rgba(181,69,43,0.06);}
.user-rank-item{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--color-border);}
.user-rank-item:last-child{border-bottom:none;}
.user-avatar{width:30px;height:30px;border-radius:50%;background:var(--color-brand-light);color:var(--color-brand-dark);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;}
.user-nick{flex:1;font-size:14px;font-weight:500;}
.user-count{font-size:12px;color:var(--color-text-secondary);background:var(--color-bg);padding:3px 10px;border-radius:var(--radius-pill);white-space:nowrap;}
.empty-state{border:2px dashed var(--color-border);border-radius:var(--radius-card);padding:48px 24px;text-align:center;color:var(--color-text-secondary);background:rgba(255,255,255,0.5);}
.empty-state__icon{width:44px;height:44px;border-radius:12px;background:var(--color-bg);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:20px;margin:0 auto 10px;}
.empty-state p{font-size:16px;margin-top:8px;}
.empty-state span{display:block;font-size:13px;color:var(--color-text-secondary);opacity:.7;margin-top:4px;}

.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.reco-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:all .25s;display:flex;flex-direction:column;}
.reco-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--color-brand-light);}
.reco-card__cover{aspect-ratio:16/9;overflow:hidden;position:relative;}
.reco-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.reco-card:hover .reco-card__cover img{transform:scale(1.04);}
.reco-card__badge{position:absolute;left:10px;top:10px;}
.reco-card__body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1;}
.reco-card__title{font-size:16px;font-weight:700;margin-bottom:6px;line-height:1.45;color:var(--color-text);}
.reco-card__title a{color:var(--color-text);}
.reco-card__title a:hover{color:var(--color-brand);}
.reco-card__meta{margin-top:auto;font-size:13px;color:var(--color-text-secondary);}

.event-panel{display:grid;grid-template-columns:5fr 7fr;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}
.event-panel__cover{position:relative;min-height:260px;}
.event-panel__cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.event-panel__cover .badge{position:absolute;left:14px;top:14px;}
.event-panel__body{padding:32px;}
.event-panel__title{font-size:22px;font-weight:800;margin-bottom:10px;}
.event-panel__info{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:14px;font-size:14px;color:var(--color-text-secondary);}
.event-panel__info strong{color:var(--color-text);font-weight:600;}
.event-points{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.event-points li{padding-left:20px;position:relative;font-size:14px;color:var(--color-text-secondary);line-height:1.6;}
.event-points li::before{content:'›';position:absolute;left:6px;color:var(--color-brand);font-weight:700;font-size:16px;line-height:1.4;}
.event-panel__actions{display:flex;gap:12px;flex-wrap:wrap;}

.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.guide-card{position:relative;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:28px 26px 24px;box-shadow:var(--shadow-card);transition:all .25s;}
.guide-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--color-brand-light);}
.guide-card__num{font-size:40px;font-weight:800;color:var(--color-brand-light);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:14px;}
.guide-card__title{font-size:19px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.guide-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin-bottom:16px;}
.guide-card__more{font-size:14px;font-weight:600;color:var(--color-brand);display:inline-flex;align-items:center;gap:4px;transition:gap .2s;}
.guide-card__more:hover{gap:8px;}

.faq-list{max-width:800px;margin:0 auto;}
.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);margin-bottom:12px;box-shadow:var(--shadow-card);transition:box-shadow .2s,border-color .2s;}
.faq-item.is-open{box-shadow:var(--shadow-hover);border-color:var(--color-brand-light);}
.faq-item__q{display:flex;align-items:flex-start;gap:12px;padding:20px 22px;cursor:pointer;width:100%;text-align:left;font-size:16px;font-weight:600;color:var(--color-text);transition:color .2s;}
.faq-item__q:hover{color:var(--color-brand);}
.faq-q-avatar{flex:0 0 30px;height:30px;border-radius:50%;background:var(--color-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;margin-top:2px;}
.faq-item__q-text{flex:1;}
.faq-arrow{color:var(--color-text-secondary);transition:transform .3s;flex-shrink:0;font-size:18px;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-item__a{max-height:400px;}
.faq-a-body{display:flex;gap:14px;padding:4px 22px 20px 64px;font-size:15px;color:var(--color-text-secondary);line-height:1.75;border-top:1px solid var(--color-border);padding-top:16px;margin-top:2px;}
.faq-a-avatar{flex:0 0 26px;height:26px;border-radius:50%;background:var(--color-bg);color:var(--color-brand);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;}

.cta-section{position:relative;padding:72px 0;overflow:hidden;}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;}
.cta-section::after{content:'';position:absolute;inset:0;background:rgba(46,35,28,0.8);}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;}
.cta-head__eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--color-brand-light);background:rgba(233,203,185,0.12);padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:10px;letter-spacing:.02em;}
.cta-head__title{font-size:clamp(26px,3.5vw,36px);font-weight:800;line-height:1.25;margin-bottom:14px;color:#F7F1E6;}
.cta-head__desc{font-size:16px;color:rgba(247,241,230,0.72);margin-bottom:24px;max-width:420px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn--light{background:#F7F1E6;color:var(--color-text);}
.btn--light:hover{background:#fff;color:var(--color-brand-dark);transform:translateY(-1px);}
.btn--outline-light{background:transparent;border-color:rgba(247,241,230,0.5);color:#F7F1E6;}
.btn--outline-light:hover{background:rgba(247,241,230,0.1);border-color:#F7F1E6;color:#fff;}
.form-card{background:var(--color-surface);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-hover);}
.form-card__title{font-size:18px;font-weight:700;color:var(--color-text);margin-bottom:6px;}
.form-card__desc{font-size:14px;color:var(--color-text-secondary);margin-bottom:16px;}
.form-row{margin-bottom:12px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--color-text);margin-bottom:6px;}
.form-input,.form-textarea{width:100%;padding:12px 14px;border:1px solid var(--color-border);border-radius:10px;background:var(--color-bg);color:var(--color-text);font-size:15px;transition:border-color .2s,box-shadow .2s;}
.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--color-brand);box-shadow:0 0 0 3px rgba(181,69,43,0.12);background:#fff;}
.form-textarea{resize:vertical;min-height:88px;}

.site-footer{background:#261E18;color:rgba(247,241,230,0.7);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px;}
.footer-brand .brand__name{color:#F7F1E6;}
.footer-desc{font-size:14px;margin-top:14px;line-height:1.7;max-width:300px;}
.footer-social{display:flex;gap:10px;margin-top:16px;}
.footer-social__icon{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;font-size:14px;color:rgba(247,241,230,0.7);cursor:default;transition:all .2s;}
.footer-social__icon:hover{background:var(--color-brand);color:#fff;}
.footer-col h4{color:#F7F1E6;font-size:16px;margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{color:rgba(247,241,230,0.7);font-size:14px;transition:color .2s;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.8;margin-bottom:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(247,241,230,0.55);}

@media (min-width:769px) and (max-width:1023px){
  .container{padding:0 28px;}
  .boards-grid{grid-template-columns:repeat(2,1fr);}
  .stats-layout{grid-template-columns:1fr;gap:36px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .topics-layout{grid-template-columns:1fr;}
  .recommend-grid{grid-template-columns:repeat(2,1fr);}
  .guide-grid{grid-template-columns:repeat(2,1fr);}
  .event-panel{grid-template-columns:1fr;}
  .event-panel__cover{min-height:220px;}
  .cta-inner{grid-template-columns:1fr;}
  .hero__inner{grid-template-columns:1fr;gap:48px;}
  .hero-mini{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .nav__links{gap:20px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section__head{margin-bottom:28px;}
  .nav{height:64px;}
  .site-header{height:64px;}
  .brand__name{font-size:16px;}
  .nav__links{position:absolute;top:64px;left:0;right:0;background:var(--color-bg);flex-direction:column;padding:12px 24px 20px;border-bottom:1px solid var(--color-border);display:none;box-shadow:0 16px 32px rgba(63,36,18,0.1);}
  .nav__links.is-open{display:flex;}
  .nav__links .nav__link{width:100%;padding:10px 0;font-size:16px;}
  .nav__link.is-active::after{width:28px;}
  .nav__toggle{display:flex;}
  .nav__status{display:none;}
  .nav__cta{gap:8px;}
  .hero{padding:48px 0 56px;}
  .hero__inner{grid-template-columns:1fr;gap:48px;}
  .hero__title{font-size:clamp(30px,9vw,38px);}
  .hero__lead{font-size:16px;}
  .hero__meta{gap:16px;font-size:13px;}
  .hero-card__meta{flex-direction:column;gap:4px;}
  .hero-mini{display:none;}
  .boards-grid{grid-template-columns:1fr;}
  .stats-layout{grid-template-columns:1fr;gap:32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stat-num{font-size:36px;}
  .topics-layout{grid-template-columns:1fr;}
  .post-card{flex-direction:column;}
  .post-card__cover{flex:0 0 auto;width:100%;aspect-ratio:16/9;}
  .recommend-grid{grid-template-columns:1fr;}
  .guide-grid{grid-template-columns:1fr;}
  .event-panel{grid-template-columns:1fr;}
  .event-panel__cover{min-height:200px;}
  .event-panel__body{padding:20px;}
  .event-panel__title{font-size:19px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-section{padding:48px 0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .faq-item__q{font-size:15px;padding:16px;}
  .faq-a-body{padding-left:16px;}
  .faq-q-avatar{flex:0 0 26px;height:26px;font-size:13px;}
}

/* roulang page: article */
:root {
  --color-brand: #B5452B;
  --color-brand-dark: #8E3420;
  --color-brand-light: #E9CBB9;
  --color-accent: #496253;
  --color-highlight: #C5923B;
  --color-bg: #F7F1E6;
  --color-surface: #FFFFFF;
  --color-border: #E5D8C4;
  --color-text: #2E231C;
  --color-text-secondary: #7C6B5B;
  --color-danger: #D24726;
  --color-success: #3F8E5E;
  --shadow-card: 0 8px 24px rgba(63,36,18,0.08);
  --shadow-hover: 0 14px 34px rgba(63,36,18,0.14);
  --radius-card: 16px;
  --radius-btn: 12px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color .2s;
}

a:hover {
  color: var(--color-brand-dark);
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
}

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

.nav {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(247, 241, 230, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-brand);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand__name {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  white-space: nowrap;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 16px;
}

.nav__link {
  position: relative;
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 600;
  padding: 6px 0;
  transition: color .2s;
}

.nav__link:hover {
  color: var(--color-brand);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s;
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.nav__link.is-active {
  color: var(--color-brand);
}

.nav__cta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.nav__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-danger);
  background: rgba(210, 71, 38, 0.08);
  border-radius: 999px;
  padding: 5px 12px;
}

.nav__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-danger);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.nav__toggle {
  display: none;
  background: transparent;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 10px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: background .2s;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color .2s, color .2s, border-color .2s, box-shadow .2s, transform .2s;
}

.btn--sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn--md {
  padding: 12px 24px;
  font-size: 15px;
}

.btn--lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn--primary {
  background: var(--color-brand);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-brand-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(181, 69, 43, 0.28);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-brand);
  border-color: var(--color-brand-light);
}

.btn--ghost:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  transform: translateY(-1px);
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  vertical-align: middle;
}

.badge--hot {
  background: var(--color-danger);
  color: #fff;
  box-shadow: 0 0 10px rgba(210, 71, 38, 0.3);
}

.badge--new {
  background: var(--color-success);
  color: #fff;
}

.badge--activity {
  background: var(--color-highlight);
  color: var(--color-text);
}

.badge--guide {
  background: var(--color-accent);
  color: #fff;
}

.article-main {
  padding: 40px 0 32px;
  min-height: 60vh;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-brand);
  font-weight: 500;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb .sep {
  opacity: 0.5;
  font-size: 13px;
}

.breadcrumb .current {
  color: var(--color-text);
  font-weight: 600;
  max-width: 340px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 40px 40px 36px;
  max-width: 920px;
  margin: 0 auto;
}

.post-title {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 16px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.post-cover {
  margin: 0 0 28px;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.post-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.post-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
}

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

.post-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 14px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.post-content h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
  margin: 26px 0 10px;
}

.post-content blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--color-bg);
  border-left: 4px solid var(--color-brand);
  border-radius: 0 12px 12px 0;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.post-content ul,
.post-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.post-content li {
  margin-bottom: 8px;
}

.post-content img {
  border-radius: 12px;
  margin: 12px 0;
}

.post-content a {
  color: var(--color-brand);
  text-decoration: underline;
}

.post-content a:hover {
  color: var(--color-brand-dark);
}

.post-footer {
  max-width: 760px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.post-empty {
  max-width: 700px;
  margin: 40px auto;
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-card);
  text-align: center;
  padding: 60px 32px;
  box-shadow: var(--shadow-card);
}

.post-empty__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: var(--color-brand);
  margin-bottom: 20px;
}

.post-empty h1 {
  font-size: 24px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.post-empty p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.related-section {
  padding: 56px 0 40px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.section-head p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.related-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  text-decoration: none;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-brand-light);
}

.related-card__cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.related-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}

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

.related-card__body {
  padding: 20px;
}

.related-card__body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.45;
  margin: 10px 0 8px;
  transition: color .2s;
}

.related-card:hover .related-card__body h3 {
  color: var(--color-brand);
}

.related-card__body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.related-card__meta {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.continue-cta {
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.footer-desc {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
  margin: 16px 0 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social__icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-secondary);
  transition: background-color .2s, color .2s, border-color .2s;
}

.footer-social__icon:hover {
  background: var(--color-brand-light);
  border-color: var(--color-brand-light);
  color: var(--color-brand-dark);
}

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

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.footer-col ul a {
  color: var(--color-text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s;
}

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

.footer-col p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 8px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 24px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .nav__links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transform: translateY(-120%);
    transition: transform .3s ease;
  }

  .nav__links.is-open {
    transform: translateY(0);
  }

  .nav__link {
    width: 100%;
    padding: 13px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 16px;
  }

  .nav__link:last-child {
    border-bottom: none;
  }

  .nav__cta {
    gap: 10px;
  }

  .nav__status {
    display: none;
  }

  .nav__toggle {
    display: inline-flex;
  }

  .post-card {
    padding: 24px 20px;
    border-radius: 14px;
  }

  .post-title {
    font-size: 24px;
  }

  .post-meta {
    gap: 6px 12px;
    font-size: 13px;
  }

  .post-content {
    font-size: 15px;
    line-height: 1.85;
  }

  .related-section {
    padding-top: 40px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .brand__name {
    font-size: 16px;
  }

  .nav {
    gap: 12px;
  }

  .btn--sm {
    padding: 8px 12px;
    font-size: 13px;
  }

  .post-card {
    padding: 20px 16px;
  }

  .post-content h2 {
    font-size: 20px;
  }

  .post-content h3 {
    font-size: 17px;
  }

  .related-card__body {
    padding: 16px;
  }

  .continue-cta .btn {
    width: 100%;
  }
}