/* ══════════════════════════════════════════════
   dq-binance.com — 币知 / CoinWiki
   Theme: Clean Green (#16a34a) + Dark (#052e16)
   Container: 1000px
   Unique: Green hero, right mini-dot TOC, green footer,
           slide-in right drawer mobile nav
   ══════════════════════════════════════════════ */

/* ── Reset ─────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;color:#1e293b;background:#fff;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{background:none;border:none;cursor:pointer;font:inherit;color:inherit}

/* ── Container ─────────────────────────────── */
.container{max-width:1000px;margin:0 auto;padding:0 20px}

/* ── Buttons ───────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 24px;border-radius:8px;font-size:.95rem;font-weight:600;transition:all .2s;cursor:pointer;border:2px solid transparent;white-space:nowrap}
.btn--primary{background:#16a34a;color:#fff;border-color:#16a34a}
.btn--primary:hover{background:#15803d;border-color:#15803d}
.btn--outline{background:transparent;color:#16a34a;border-color:#16a34a}
.btn--outline:hover{background:#16a34a;color:#fff}
.btn--white{background:#fff;color:#052e16;border-color:#fff}
.btn--white:hover{background:#f0fdf4;border-color:#f0fdf4}
.btn--ghost{background:rgba(255,255,255,.15);color:#fff;border-color:rgba(255,255,255,.3)}
.btn--ghost:hover{background:rgba(255,255,255,.25)}
.btn--sm{padding:7px 16px;font-size:.82rem}
.btn--block{width:100%;text-align:center}

/* ── Header ────────────────────────────────── */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;border-bottom:1px solid #e2e8f0;transition:box-shadow .3s}
.site-header--scrolled{box-shadow:0 1px 8px rgba(0,0,0,.06)}
.site-header__inner{display:flex;align-items:center;height:56px}

.site-header__brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.05rem;color:#052e16;flex-shrink:0}
.brand-icon{width:28px;height:28px;background:#16a34a;border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.8rem;font-weight:800}

.site-nav{display:flex;align-items:center;gap:4px;margin-left:28px}
.site-nav__link{padding:6px 12px;font-size:.92rem;color:#475569;border-radius:6px;transition:all .15s;font-weight:500}
.site-nav__link:hover{color:#16a34a;background:#f0fdf4}
.site-nav__link--on{color:#16a34a;font-weight:600}

/* Nav dropdown */
.site-nav__drop{position:relative}
.site-nav__drop-panel{position:absolute;top:100%;left:0;min-width:180px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.08);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .2s}
.site-nav__drop:hover .site-nav__drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.site-nav__drop-item{display:block;padding:8px 12px;border-radius:6px;font-size:.85rem;color:#475569}
.site-nav__drop-item:hover{background:#f0fdf4;color:#16a34a}

.site-header__right{display:flex;align-items:center;gap:12px;margin-left:auto}

/* Language switcher */
.lang-switch{position:relative}
.lang-switch__btn{padding:4px 10px;font-size:.78rem;font-weight:600;color:#475569;border:1px solid #e2e8f0;border-radius:6px;display:flex;align-items:center;gap:4px;background:#fff}
.lang-switch__btn:hover{border-color:#16a34a;color:#16a34a}
.lang-switch__panel{position:absolute;top:calc(100% + 4px);right:0;background:#fff;border:1px solid #e2e8f0;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.08);padding:4px;min-width:100px;opacity:0;visibility:hidden;transform:translateY(4px);transition:all .2s}
.lang-switch__panel--open{opacity:1;visibility:visible;transform:translateY(0)}
.lang-switch__opt{display:block;padding:6px 12px;font-size:.82rem;border-radius:6px;color:#475569}
.lang-switch__opt:hover{background:#f0fdf4;color:#16a34a}
.lang-switch__opt--on{color:#16a34a;font-weight:600}

.header-cta{padding:6px 16px;background:#16a34a;color:#fff;border-radius:6px;font-size:.82rem;font-weight:600;transition:background .2s}
.header-cta:hover{background:#15803d}

/* Mobile toggle */
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:4px}
.nav-toggle span{display:block;width:20px;height:2px;background:#1e293b;border-radius:2px;transition:all .2s}

@media(max-width:768px){
  .site-nav,.site-header__right .header-cta{display:none}
  .nav-toggle{display:flex}
}

/* ── Mobile Drawer (slide-in right) ────────── */
.nav-drawer{position:fixed;top:0;right:0;bottom:0;width:280px;background:#fff;z-index:200;transform:translateX(100%);transition:transform .3s ease;box-shadow:-4px 0 24px rgba(0,0,0,.1);overflow-y:auto}
.nav-drawer--open{transform:translateX(0)}
.nav-drawer__overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:199;opacity:0;visibility:hidden;transition:all .3s}
.nav-drawer__overlay--open{opacity:1;visibility:visible}

.nav-drawer__top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #e2e8f0}
.nav-drawer__close{padding:4px}

.nav-drawer__links{padding:12px 16px}
.nav-drawer__item{display:block;padding:12px 8px;font-size:.95rem;color:#1e293b;border-bottom:1px solid #f1f5f9}
.nav-drawer__item:hover{color:#16a34a}
.nav-drawer__sub-toggle{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav-drawer__sub{display:none;padding:4px 0 4px 16px}
.nav-drawer__group--open .nav-drawer__sub{display:block}
.nav-drawer__group--open .nav-drawer__arrow{transform:rotate(180deg)}
.nav-drawer__arrow{transition:transform .2s}
.nav-drawer__sub a{display:block;padding:8px;font-size:.88rem;color:#64748b}
.nav-drawer__sub a:hover{color:#16a34a}

.nav-drawer__bottom{padding:16px 20px;border-top:1px solid #e2e8f0}
.nav-drawer__lang{display:flex;gap:8px;margin-bottom:12px}
.nav-drawer__lang a{padding:4px 10px;font-size:.78rem;border-radius:4px;color:#64748b;border:1px solid #e2e8f0}
.nav-drawer__lang a.on{color:#16a34a;border-color:#16a34a;font-weight:600}

/* ── Hero ───────────────────────────────────── */
.hero{padding:100px 0 60px;background:linear-gradient(135deg,#052e16 0%,#14532d 50%,#166534 100%);color:#fff;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(22,163,74,.3) 0%,transparent 70%);pointer-events:none}
.hero__badge{display:inline-block;padding:6px 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:50px;font-size:.8rem;margin-bottom:20px}
.hero__title{font-size:2.4rem;font-weight:800;line-height:1.3;margin-bottom:16px;max-width:600px}
.hero__desc{font-size:1.1rem;opacity:.85;margin-bottom:28px;max-width:550px;line-height:1.8}
.hero__btns{display:flex;gap:12px;flex-wrap:wrap}
.hero__promo{margin-top:20px;font-size:.85rem;opacity:.7}
@media(max-width:768px){
  .hero{padding:80px 0 48px}
  .hero__title{font-size:1.6rem}
  .hero__desc{font-size:.95rem}
}

/* ── Stats Row ──────────────────────────────── */
.stats-row{display:flex;gap:0;background:#f0fdf4;border-radius:12px;overflow:hidden;margin-top:-32px;position:relative;z-index:2;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.stats-row__item{flex:1;padding:20px;text-align:center;border-right:1px solid #dcfce7}
.stats-row__item:last-child{border-right:none}
.stats-row__num{font-size:1.5rem;font-weight:800;color:#16a34a}
.stats-row__label{font-size:.78rem;color:#64748b;margin-top:2px}
@media(max-width:768px){
  .stats-row{flex-wrap:wrap}
  .stats-row__item{flex:1 1 50%;border-bottom:1px solid #dcfce7}
}

/* ── Section ───────────────────────────────── */
.section{padding:48px 0}
.section--alt{background:#f8faf9}
.section__title{font-size:1.5rem;font-weight:700;color:#052e16;margin-bottom:24px}
.section__more{text-align:center;margin-top:24px}

/* ── Category Grid ─────────────────────────── */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.cat-card{display:flex;align-items:center;gap:12px;padding:16px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;transition:all .2s}
.cat-card:hover{border-color:#16a34a;box-shadow:0 4px 12px rgba(22,163,74,.1)}
.cat-card__icon{font-size:1.3rem;flex-shrink:0}
.cat-card__info{min-width:0}
.cat-card__name{font-size:.88rem;font-weight:600;color:#1e293b;display:block}
.cat-card__count{font-size:.75rem;color:#64748b}
@media(max-width:768px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
}

/* ── Article List ──────────────────────────── */
.article-list{display:flex;flex-direction:column}
.article-list__item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid #f1f5f9;transition:background .15s}
.article-list__item:hover{background:#f8faf9}
.article-list__title{font-size:1rem;font-weight:500;color:#1e293b;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-list__meta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.article-list__tag{font-size:.72rem;padding:2px 8px;background:#f0fdf4;color:#16a34a;border-radius:4px;font-weight:500}
.article-list__date{font-size:.78rem;color:#94a3b8}

/* ── FAQ ───────────────────────────────────── */
.faq__item{border-bottom:1px solid #e2e8f0}
.faq__q{display:flex;align-items:center;justify-content:space-between;width:100%;padding:16px 0;font-size:.92rem;font-weight:600;color:#1e293b;text-align:left}
.faq__chevron{transition:transform .2s;color:#94a3b8;flex-shrink:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s}
.faq__a p{padding:0 0 16px;font-size:.88rem;color:#64748b;line-height:1.8}
.faq__item--open .faq__a{max-height:300px}
.faq__item--open .faq__chevron{transform:rotate(180deg)}

/* ── CTA Banner ────────────────────────────── */
.cta-banner{background:linear-gradient(135deg,#052e16,#166534);color:#fff;border-radius:14px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.cta-banner__title{font-size:1.3rem;font-weight:700}
.cta-banner__desc{font-size:.9rem;opacity:.8;margin-top:6px}
.cta-banner__btns{display:flex;gap:10px;flex-shrink:0}
@media(max-width:768px){
  .cta-banner{flex-direction:column;text-align:center;padding:28px 20px}
  .cta-banner__btns{width:100%;justify-content:center}
}

/* ── Post Header ───────────────────────────── */
.post-hero{padding:88px 0 32px;background:#f8faf9;border-bottom:1px solid #e2e8f0}
.post-hero__tags{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
.tag-chip{display:inline-block;padding:3px 10px;font-size:.75rem;font-weight:500;background:#f0fdf4;color:#16a34a;border-radius:4px}
.post-hero__title{font-size:1.7rem;font-weight:800;color:#052e16;line-height:1.35;margin-bottom:12px}
.post-hero__meta{display:flex;align-items:center;gap:12px;font-size:.82rem;color:#64748b;flex-wrap:wrap}
.meta-dot{color:#cbd5e1}

/* ── Post Layout (with right mini TOC) ─────── */
.post-layout{padding:32px 0 48px}
.post-layout__grid{display:grid;grid-template-columns:1fr 200px;gap:40px;align-items:start}
@media(max-width:900px){
  .post-layout__grid{grid-template-columns:1fr;gap:0}
}

/* Article body */
.post-body{min-width:0;font-size:1rem;line-height:1.85;color:#334155}
.post-body h2{font-size:1.4rem;font-weight:700;color:#052e16;margin:32px 0 12px;padding-bottom:8px;border-bottom:1px solid #e2e8f0}
.post-body h3{font-size:1.15rem;font-weight:600;color:#0f172a;margin:24px 0 8px}
.post-body p{margin:12px 0}
.post-body a{color:#16a34a;text-decoration:underline;text-underline-offset:2px}
.post-body a:hover{color:#15803d}
.post-body ul,.post-body ol{margin:12px 0;padding-left:24px}
.post-body ul{list-style:disc}
.post-body ol{list-style:decimal}
.post-body li{margin:6px 0}
.post-body strong{font-weight:600;color:#0f172a}
.post-body blockquote{margin:16px 0;padding:12px 20px;border-left:3px solid #16a34a;background:#f0fdf4;border-radius:0 8px 8px 0;color:#334155}
.post-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.88rem}
.post-body th{background:#f0fdf4;padding:10px 12px;text-align:left;font-weight:600;border-bottom:2px solid #16a34a;color:#052e16}
.post-body td{padding:10px 12px;border-bottom:1px solid #e2e8f0}
.post-body code{font-size:.85em;background:#f1f5f9;padding:2px 6px;border-radius:4px;font-family:"SF Mono",Monaco,"Cascadia Code",monospace}
.post-body pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:8px;overflow-x:auto;margin:16px 0}
.post-body pre code{background:none;padding:0;color:inherit}
.post-body hr{border:none;border-top:1px solid #e2e8f0;margin:24px 0}

/* ── Mini-dot TOC (right sidebar) ──────────── */
.toc-mini{position:sticky;top:80px}
.toc-mini__title{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:#94a3b8;font-weight:600;margin-bottom:12px}
.toc-mini__list{display:flex;flex-direction:column;gap:0}
.toc-mini__item{display:flex;align-items:flex-start;gap:8px;padding:5px 0;cursor:pointer;transition:all .15s}
.toc-mini__item a{font-size:.75rem;color:#94a3b8;line-height:1.4;transition:color .15s}
.toc-mini__item:hover a{color:#16a34a}
.toc-mini__item--active a{color:#16a34a;font-weight:600}
.toc-mini__dot{width:6px;height:6px;border-radius:50%;background:#cbd5e1;flex-shrink:0;margin-top:5px;transition:all .15s}
.toc-mini__item--active .toc-mini__dot{background:#16a34a;box-shadow:0 0 0 3px rgba(22,163,74,.2)}
.toc-mini__item:hover .toc-mini__dot{background:#16a34a}
.toc-mini__item--sub{padding-left:14px}
.toc-mini__item--sub .toc-mini__dot{width:4px;height:4px;margin-top:6px}
@media(max-width:900px){
  .toc-mini{display:none}
}

/* ── Download CTA (in-article) ─────────────── */
.dl-cta{margin:28px 0;padding:20px 24px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px}
.dl-cta__title{font-size:.95rem;font-weight:700;color:#052e16;margin-bottom:6px}
.dl-cta__desc{font-size:.82rem;color:#64748b;margin-bottom:12px}
.dl-cta__btns{display:flex;gap:8px;flex-wrap:wrap}
.dl-cta .btn--primary,.post-body .dl-cta a.btn--primary{color:#fff;text-decoration:none}
.dl-cta .btn--outline,.post-body .dl-cta a.btn--outline{color:#16a34a;text-decoration:none}

/* ── CTA Card (in-article) ─────────────────── */
.cta-card{margin:24px 0;padding:20px 24px;background:linear-gradient(135deg,#052e16,#166534);border-radius:10px;color:#fff}
.cta-card__title{font-size:.95rem;font-weight:700;margin-bottom:6px}
.cta-card__desc{font-size:.82rem;opacity:.8;margin-bottom:12px}
.cta-card .btn--white,.post-body .cta-card a.btn--white{color:#052e16;text-decoration:none}
.post-body .cta-card a{color:#fff;text-decoration:none}

/* ── Share Buttons ─────────────────────────── */
.share-section{padding:20px 0;border-top:1px solid #e2e8f0}
.share-btns{display:flex;gap:8px;align-items:center}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;font-size:.8rem;border-radius:6px;border:1px solid #e2e8f0;color:#64748b;transition:all .15s}
.share-btn:hover{border-color:#16a34a;color:#16a34a}

/* ── Related Posts ─────────────────────────── */
.related{padding:40px 0;background:#f8faf9}
.related__title{font-size:1.1rem;font-weight:700;color:#052e16;margin-bottom:16px}
.related__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.related__card{display:block;padding:16px;background:#fff;border:1px solid #e2e8f0;border-radius:8px;transition:all .2s}
.related__card:hover{border-color:#16a34a;box-shadow:0 2px 8px rgba(22,163,74,.08)}
.related__card-title{font-size:.88rem;font-weight:600;color:#1e293b;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related__card-date{font-size:.75rem;color:#94a3b8}
@media(max-width:768px){
  .related__grid{grid-template-columns:1fr}
}

/* ── Page Content ──────────────────────────── */
.page-content{padding:88px 0 48px}
.page-content h1{font-size:1.6rem;font-weight:800;color:#052e16;margin-bottom:16px}
.page-content h2{font-size:1.2rem;font-weight:700;color:#0f172a;margin:28px 0 12px}
.page-content p{margin:10px 0;font-size:.92rem;color:#475569;line-height:1.8}
.page-content a{color:#16a34a}
.page-content a.btn--primary{color:#fff}
.page-content a.btn--outline{color:#16a34a}
.page-content ol,.page-content ul{margin:10px 0;padding-left:24px;font-size:.92rem;color:#475569}
.page-content ol{list-style:decimal}
.page-content ul{list-style:disc}
.page-content li{margin:6px 0}
.page-content strong{color:#0f172a}

/* ── Download page ─────────────────────────── */
.dl-hero{background:linear-gradient(135deg,#052e16,#166534);color:#fff;border-radius:14px;padding:40px;margin-bottom:28px}
.dl-hero h1,.dl-hero__title{font-size:1.5rem;font-weight:800;margin-bottom:8px;color:#fff}
.dl-hero p,.dl-hero__desc{font-size:.95rem;opacity:.85;color:rgba(255,255,255,.85)}
.page-content .dl-hero h1,.page-content .dl-hero__title{color:#fff}
.page-content .dl-hero p,.page-content .dl-hero__desc{color:rgba(255,255,255,.85)}

/* ── Posts Page ─────────────────────────────── */
.page-header{padding:80px 0 24px}
.page-header__title{font-size:1.5rem;font-weight:800;color:#052e16}
.page-header__desc{font-size:.9rem;color:#64748b;margin-top:6px}

/* ── Tags Page ─────────────────────────────── */
.tags-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;padding-bottom:40px}
.tags-card{display:block;padding:16px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;transition:all .2s}
.tags-card:hover{border-color:#16a34a;box-shadow:0 2px 8px rgba(22,163,74,.08)}
.tags-card__name{display:block;font-size:.9rem;font-weight:600;color:#1e293b}
.tags-card__count{font-size:.78rem;color:#64748b;margin-top:4px;display:block}

/* ── Breadcrumb ────────────────────────────── */
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:.78rem;color:#94a3b8;padding:12px 0;flex-wrap:wrap}
.breadcrumb a{color:#64748b}
.breadcrumb a:hover{color:#16a34a}
.breadcrumb__sep{color:#cbd5e1}

/* ── 404 ───────────────────────────────────── */
.error-page{text-align:center;padding:120px 0 80px}
.error-page__code{font-size:5rem;font-weight:900;color:#dcfce7;line-height:1}
.error-page__title{font-size:1.4rem;font-weight:700;color:#052e16;margin-top:16px}
.error-page__desc{font-size:.9rem;color:#64748b;margin:8px 0 24px}
.error-page__btns{display:flex;gap:10px;justify-content:center}

/* ── Footer ────────────────────────────────── */
.footer{background:#052e16;color:#fff;padding:48px 0 0}
.footer__top{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;padding-bottom:32px}
.footer__brand-logo{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.footer__brand-logo .brand-icon{background:rgba(255,255,255,.15)}
.footer__brand-name{font-weight:700;font-size:1rem}
.footer__desc{font-size:.82rem;color:rgba(255,255,255,.6);line-height:1.7}

.footer__heading{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:rgba(255,255,255,.5);margin-bottom:12px}
.footer__list li{margin-bottom:6px}
.footer__list a{font-size:.85rem;color:rgba(255,255,255,.7);transition:color .15s}
.footer__list a:hover{color:#4ade80}

.footer__risk{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer__risk-title{font-size:.78rem;font-weight:600;color:#fbbf24;margin-bottom:6px}
.footer__risk-text{font-size:.75rem;color:rgba(255,255,255,.45);line-height:1.7}

.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;display:flex;align-items:center;justify-content:space-between}
.footer__copyright{font-size:.75rem;color:rgba(255,255,255,.4)}
.footer__lang{display:flex;gap:6px}
.footer__lang a{font-size:.72rem;padding:3px 8px;border-radius:4px;color:rgba(255,255,255,.5);border:1px solid rgba(255,255,255,.15)}
.footer__lang a:hover{border-color:rgba(255,255,255,.3);color:#fff}
.footer__lang a.on{color:#4ade80;border-color:#4ade80}

@media(max-width:768px){
  .footer__top{grid-template-columns:1fr;gap:24px}
  .footer__bottom{flex-direction:column;gap:12px;text-align:center}
}

/* ── Utility ───────────────────────────────── */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Body padding for fixed header */
body{padding-top:56px}