/* ===== do-binance.com — CoinWay / 币道 ===== */
/* Knowledge-base / help-center style */
/* Primary: cyan #06b6d4  Dark: #0f172a  Container: 1060px */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC","Noto Sans JP","Noto Sans KR",sans-serif;color:#1e293b;background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}

/* ── Container ── */
.container{max-width:1060px;margin:0 auto;padding:0 20px}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s;border:none;text-decoration:none;gap:6px}
.btn--primary{background:#06b6d4;color:#fff}
.btn--primary:hover{background:#0891b2}
.btn--outline{background:transparent;border:1.5px solid #06b6d4;color:#06b6d4}
.btn--outline:hover{background:#06b6d4;color:#fff}
.btn--white{background:#fff;color:#0f172a}
.btn--white:hover{background:#f0f9ff}
.btn--ghost{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.12)}
.btn--sm{padding:7px 16px;font-size:.82rem}
.btn--lg{padding:13px 28px;font-size:1rem}

/* ===== HEADER — white apple-style + 2px cyan top line ===== */
.top-line{height:2px;background:#06b6d4;position:fixed;top:0;left:0;right:0;z-index:1001}
.site-header{position:fixed;top:2px;left:0;right:0;z-index:1000;background:#fff;border-bottom:1px solid #e2e8f0;transition:box-shadow .25s,padding .25s}
.site-header--scrolled{box-shadow:0 1px 8px rgba(0,0,0,.08);padding-top:0;padding-bottom:0}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.site-header__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem;color:#0f172a}
.site-header__logo{width:32px;height:32px;border-radius:50%;background:#06b6d4;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.95rem;font-weight:800;flex-shrink:0}
.site-header__right{display:flex;align-items:center;gap:22px}
.site-header__nav{display:flex;gap:20px}
.site-header__nav a{font-size:.88rem;color:#475569;font-weight:500;transition:color .2s}
.site-header__nav a:hover,.site-header__nav a.active{color:#06b6d4}
.lang-switch{display:flex;gap:6px}
.lang-switch a{font-size:.72rem;padding:2px 7px;border-radius:4px;color:#64748b;font-weight:600;border:1px solid transparent;transition:all .15s}
.lang-switch a:hover{color:#06b6d4;border-color:#06b6d4}
.lang-switch a.active{background:#06b6d4;color:#fff;border-color:#06b6d4}
.site-header__cta{background:#06b6d4;color:#fff !important;padding:7px 18px;border-radius:7px;font-size:.82rem;font-weight:600;transition:background .2s}
.site-header__cta:hover{background:#0891b2}
.site-header__burger{display:none;background:none;border:none;font-size:.85rem;color:#475569;cursor:pointer;padding:6px;font-weight:600}

/* ── Mobile Bottom Sheet ── */
.mobile-sheet-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:2000;opacity:0;transition:opacity .3s}
.mobile-sheet-overlay.open{display:block;opacity:1}
.mobile-sheet{position:fixed;bottom:0;left:0;right:0;background:#fff;border-radius:16px 16px 0 0;z-index:2001;transform:translateY(100%);transition:transform .35s cubic-bezier(.32,.72,0,1);max-height:70vh;overflow-y:auto;padding:0 0 env(safe-area-inset-bottom)}
.mobile-sheet.open{transform:translateY(0)}
.mobile-sheet__handle{width:36px;height:4px;background:#cbd5e1;border-radius:2px;margin:10px auto 6px}
.mobile-sheet__nav{padding:8px 20px 20px}
.mobile-sheet__nav a{display:block;padding:14px 0;font-size:1rem;color:#1e293b;border-bottom:1px solid #f1f5f9;font-weight:500}
.mobile-sheet__nav a:last-child{border-bottom:none}
.mobile-sheet__lang{display:flex;gap:8px;padding:6px 20px 16px}
.mobile-sheet__lang a{font-size:.78rem;padding:4px 12px;border-radius:20px;border:1px solid #e2e8f0;color:#64748b;font-weight:600}
.mobile-sheet__lang a.active{background:#06b6d4;color:#fff;border-color:#06b6d4}
.mobile-sheet__cta{padding:0 20px 20px}
.mobile-sheet__cta .btn{width:100%}

/* ===== HERO — Knowledge-base search hero ===== */
.kb-hero{background:linear-gradient(135deg,#06b6d4 0%,#0891b2 100%);color:#fff;padding:56px 0 48px;text-align:center}
.kb-hero__title{font-size:2rem;font-weight:800;margin-bottom:10px;letter-spacing:-.02em}
.kb-hero__desc{font-size:.95rem;opacity:.88;margin-bottom:26px;max-width:520px;margin-left:auto;margin-right:auto}
.kb-hero__search{max-width:480px;margin:0 auto 24px;position:relative}
.kb-hero__search input{width:100%;padding:13px 20px 13px 44px;border:none;border-radius:10px;font-size:.92rem;background:rgba(255,255,255,.95);color:#1e293b;outline:none}
.kb-hero__search input::placeholder{color:#94a3b8}
.kb-hero__search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:#94a3b8}
.kb-hero__btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== CATEGORY GRID — 4x2 knowledge-base cards ===== */
.cat-section{padding:48px 0 40px}
.cat-section__title{font-size:1.3rem;font-weight:700;margin-bottom:24px;color:#0f172a}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cat-card{display:flex;align-items:center;gap:14px;padding:18px 16px;border:1px solid #e2e8f0;border-radius:10px;transition:all .2s;border-left:3px solid #06b6d4;cursor:pointer}
.cat-card:hover{box-shadow:0 2px 12px rgba(6,182,212,.15);transform:translateY(-1px);border-left-color:#0891b2}
.cat-card__icon{font-size:1.5rem;flex-shrink:0}
.cat-card__info{flex:1;min-width:0}
.cat-card__name{font-size:.92rem;font-weight:600;color:#0f172a;display:block}
.cat-card__count{font-size:.76rem;color:#94a3b8;margin-top:2px;display:block}

/* ===== LATEST ARTICLES LIST ===== */
.latest-section{padding:0 0 48px}
.latest-section__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.latest-section__title{font-size:1.3rem;font-weight:700;color:#0f172a}
.latest-section__more{font-size:.85rem;color:#06b6d4;font-weight:500}
.latest-section__more:hover{text-decoration:underline}
.latest-list{display:flex;flex-direction:column}
.latest-item{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid #f1f5f9;transition:background .15s;gap:16px}
.latest-item:last-child{border-bottom:none}
.latest-item:hover{background:#f8fafc;padding-left:8px;padding-right:8px;border-radius:6px}
.latest-item__title{font-size:.92rem;font-weight:500;color:#1e293b;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.latest-item__meta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.latest-item__tag{font-size:.72rem;padding:2px 8px;background:#f0f9ff;color:#0891b2;border-radius:4px;white-space:nowrap}
.latest-item__date{font-size:.76rem;color:#94a3b8;white-space:nowrap}

/* ===== FULL-WIDTH CTA BANNER ===== */
.cta-banner{background:linear-gradient(135deg,#06b6d4 0%,#0891b2 50%,#0e7490 100%);padding:40px 0;text-align:center;color:#fff}
.cta-banner__title{font-size:1.3rem;font-weight:700;margin-bottom:8px}
.cta-banner__desc{font-size:.88rem;opacity:.88;margin-bottom:20px}
.cta-banner__btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== FAQ ACCORDION ===== */
.faq-section{padding:48px 0 56px}
.faq-section__title{font-size:1.3rem;font-weight:700;margin-bottom:22px;color:#0f172a}
.faq-item{border:1px solid #e2e8f0;border-radius:8px;margin-bottom:8px;overflow:hidden}
.faq-item__q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px 18px;background:#fff;border:none;cursor:pointer;font-size:.9rem;font-weight:600;color:#1e293b;text-align:left;gap:12px}
.faq-item__q svg{width:18px;height:18px;flex-shrink:0;color:#94a3b8;transition:transform .25s}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 18px;font-size:.88rem;color:#475569;line-height:1.7}
.faq-item--open .faq-item__q svg{transform:rotate(180deg)}
.faq-item--open .faq-item__a{max-height:300px;padding:0 18px 16px}

/* ===== ARTICLE PAGE — left sticky TOC ===== */
.post-layout{display:flex;gap:40px;padding:32px 0 48px;align-items:flex-start}
.post-toc{width:220px;flex-shrink:0;position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto;padding-right:16px}
.post-toc__title{font-size:.82rem;font-weight:700;color:#94a3b8;text-transform:uppercase;letter-spacing:.04em;margin-bottom:12px;padding-left:14px}
.post-toc__list{border-left:2px solid #e2e8f0;padding-left:0}
.post-toc__item{display:block;padding:6px 0 6px 14px;font-size:.82rem;color:#64748b;border-left:2px solid transparent;margin-left:-2px;transition:all .15s;line-height:1.4}
.post-toc__item:hover{color:#06b6d4}
.post-toc__item--active{color:#06b6d4;border-left-color:#06b6d4;font-weight:600}
.post-main{flex:1;min-width:0}

/* ── Post Header ── */
.post-header{margin-bottom:28px}
.post-header__title{font-size:1.7rem;font-weight:800;color:#0f172a;line-height:1.35;margin-bottom:12px}
.post-header__meta{display:flex;align-items:center;gap:12px;font-size:.8rem;color:#94a3b8;flex-wrap:wrap}
.post-header__meta span{display:flex;align-items:center;gap:4px}
.post-header__tag{font-size:.72rem;padding:2px 8px;background:#f0f9ff;color:#0891b2;border-radius:4px}

/* ── Post Body ── */
.post-body{font-size:.95rem;line-height:1.85;color:#334155}
.post-body h2{font-size:1.35rem;font-weight:700;color:#0f172a;margin:36px 0 14px;padding-bottom:8px;border-bottom:1px solid #f1f5f9}
.post-body h3{font-size:1.1rem;font-weight:600;color:#1e293b;margin:28px 0 10px}
.post-body p{margin-bottom:16px}
.post-body ul,.post-body ol{margin:0 0 16px 20px}
.post-body ul{list-style:disc}
.post-body ol{list-style:decimal}
.post-body li{margin-bottom:6px}
.post-body a{color:#06b6d4;text-decoration:underline;text-underline-offset:2px}
.post-body a:hover{color:#0891b2}
.post-body blockquote{margin:20px 0;padding:14px 18px;border-left:3px solid #06b6d4;background:#f0f9ff;border-radius:0 8px 8px 0;font-size:.9rem;color:#475569}
.post-body code{background:#f0f9ff;color:#0e7490;padding:2px 6px;border-radius:4px;font-size:.85rem}
.post-body pre{background:#0f172a;color:#e2e8f0;padding:18px;border-radius:8px;overflow-x:auto;margin:16px 0;font-size:.84rem;line-height:1.6}
.post-body pre code{background:none;color:inherit;padding:0}
.post-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.88rem}
.post-body table th{background:#f0f9ff;color:#0e7490;padding:10px 12px;text-align:left;font-weight:600;border-bottom:2px solid #06b6d4}
.post-body table td{padding:10px 12px;border-bottom:1px solid #f1f5f9}
.post-body table tr:hover td{background:#f8fafc}
.post-body img{border-radius:8px;margin:16px 0}
.post-body strong{color:#0f172a;font-weight:600}

/* ── Mobile inline TOC (collapsed) ── */
.post-toc-mobile{display:none;margin-bottom:24px;border:1px solid #e2e8f0;border-radius:8px;overflow:hidden}
.post-toc-mobile__toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#f8fafc;border:none;cursor:pointer;font-size:.85rem;font-weight:600;color:#475569}
.post-toc-mobile__toggle svg{width:16px;height:16px;transition:transform .25s}
.post-toc-mobile__list{max-height:0;overflow:hidden;transition:max-height .3s;padding:0 16px}
.post-toc-mobile--open .post-toc-mobile__toggle svg{transform:rotate(180deg)}
.post-toc-mobile--open .post-toc-mobile__list{max-height:500px;padding:0 16px 12px}
.post-toc-mobile__list a{display:block;padding:6px 0;font-size:.82rem;color:#64748b;border-left:2px solid #e2e8f0;padding-left:12px;margin-left:4px}
.post-toc-mobile__list a:hover{color:#06b6d4}

/* ── Download CTA in article ── */
.dl-cta{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd;border-radius:10px;padding:20px 22px;margin:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.dl-cta__text{font-size:.88rem;color:#475569;font-weight:500}
.dl-cta__links{display:flex;gap:10px;flex-shrink:0}

/* ── Share Row ── */
.share-row{display:flex;gap:10px;margin:28px 0;padding-top:20px;border-top:1px solid #f1f5f9;flex-wrap:wrap}
.share-row button,.share-row a{font-size:.8rem;padding:6px 14px;border-radius:6px;border:1px solid #e2e8f0;background:#fff;color:#475569;cursor:pointer;font-weight:500;transition:all .15s;display:inline-flex;align-items:center;gap:4px}
.share-row button:hover,.share-row a:hover{border-color:#06b6d4;color:#06b6d4}

/* ── Related Posts ── */
.related{margin-top:40px;padding-top:32px;border-top:1px solid #f1f5f9}
.related__title{font-size:1.1rem;font-weight:700;margin-bottom:16px;color:#0f172a}
.related__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.related__item{padding:16px;border:1px solid #e2e8f0;border-radius:8px;transition:all .2s}
.related__item:hover{border-color:#06b6d4;box-shadow:0 2px 8px rgba(6,182,212,.08)}
.related__item a{font-size:.88rem;font-weight:600;color:#1e293b;display:block;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related__item time{font-size:.74rem;color:#94a3b8}

/* ===== BREADCRUMB ===== */
.breadcrumb{padding:18px 0 6px;font-size:.8rem;color:#94a3b8;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb a{color:#64748b;transition:color .15s}
.breadcrumb a:hover{color:#06b6d4}
.breadcrumb__sep{color:#cbd5e1}

/* ===== ARCHIVE / POSTS LIST ===== */
.archive{padding:16px 0 48px}
.archive__header{margin-bottom:24px}
.archive__title{font-size:1.5rem;font-weight:800;color:#0f172a;margin-bottom:4px}
.archive__desc{font-size:.85rem;color:#94a3b8}
.archive__list{display:flex;flex-direction:column}
.post-card{display:block;padding:16px 0;border-bottom:1px solid #f1f5f9;transition:all .15s}
.post-card:hover{padding-left:8px;background:#f8fafc;border-radius:6px}
.post-card__meta{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.post-card__meta time{font-size:.76rem;color:#94a3b8}
.post-card__tag{font-size:.7rem;padding:1px 7px;background:#f0f9ff;color:#0891b2;border-radius:4px}
.post-card__title{font-size:.95rem;font-weight:600;color:#1e293b;margin-bottom:3px}
.post-card__desc{font-size:.82rem;color:#64748b;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== TAGS PAGE ===== */
.tags-page{padding:16px 0 48px}
.tags-page__title{font-size:1.5rem;font-weight:800;color:#0f172a;margin-bottom:24px}
.tags-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.tag-card{display:flex;align-items:center;justify-content:space-between;padding:18px 16px;border:1px solid #e2e8f0;border-radius:10px;transition:all .2s;border-left:3px solid transparent}
.tag-card:hover{border-left-color:#06b6d4;box-shadow:0 2px 12px rgba(6,182,212,.08)}
.tag-card__left{display:flex;align-items:center;gap:12px}
.tag-card__icon{font-size:1.3rem}
.tag-card__name{font-size:.95rem;font-weight:600;color:#1e293b}
.tag-card__count{font-size:.78rem;color:#94a3b8;background:#f1f5f9;padding:2px 10px;border-radius:12px}

/* ── Tag Detail ── */
.tag-detail{padding:16px 0 48px}
.tag-detail__header{margin-bottom:24px;display:flex;align-items:center;gap:12px}
.tag-detail__icon{font-size:1.5rem}
.tag-detail__title{font-size:1.5rem;font-weight:800;color:#0f172a}
.tag-detail__count{font-size:.85rem;color:#94a3b8}
.tag-detail__list{display:flex;flex-direction:column}

/* ===== CTA SECTION (reusable) ===== */
.cta-section{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border-radius:12px;padding:32px;text-align:center;margin:32px 0}
.cta-section__title{font-size:1.15rem;font-weight:700;color:#0f172a;margin-bottom:6px}
.cta-section__desc{font-size:.88rem;color:#475569;margin-bottom:18px}
.cta-section__btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== FOOTER — compact light gray ===== */
.footer-cta{background:linear-gradient(135deg,#06b6d4,#0891b2);padding:14px 0;color:#fff;font-size:.88rem}
.footer-cta__inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-cta__inner strong{font-weight:700}
.footer-cta__btns{display:flex;gap:8px}

.site-footer{background:#f8fafc;padding:20px 0 0;color:#475569;font-size:.8rem}
.site-footer__row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-bottom:14px}
.site-footer__brand{display:flex;align-items:center;gap:8px;flex-shrink:0}
.site-footer__logo{width:26px;height:26px;border-radius:50%;background:#06b6d4;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;flex-shrink:0}
.site-footer__brand-name{font-weight:700;font-size:.9rem;color:#0f172a}
.site-footer__nav{display:flex;gap:6px;flex-wrap:wrap}
.site-footer__nav a{color:#64748b;padding:2px 8px;border-radius:4px;transition:color .15s}
.site-footer__nav a:hover{color:#06b6d4}
.site-footer__lang{display:flex;gap:4px}
.site-footer__lang a{padding:2px 8px;border-radius:4px;border:1px solid #e2e8f0;color:#64748b;font-size:.72rem;font-weight:600;transition:all .15s}
.site-footer__lang a:hover{border-color:#06b6d4;color:#06b6d4}
.site-footer__lang a.active{background:#06b6d4;color:#fff;border-color:#06b6d4}
.site-footer__bottom{border-top:1px solid #e2e8f0;padding:12px 0 14px;text-align:center}
.site-footer__risk{font-size:.72rem;color:#94a3b8;line-height:1.5;margin-bottom:6px}
.site-footer__copy{font-size:.72rem;color:#94a3b8}

/* ===== 404 PAGE ===== */
.error-page{text-align:center;padding:80px 20px}
.error-page__code{font-size:6rem;font-weight:800;color:#cffafe;line-height:1}
.error-page__title{font-size:1.3rem;font-weight:700;color:#0f172a;margin:16px 0 8px}
.error-page__desc{font-size:.9rem;color:#64748b;margin-bottom:24px}
.error-page__links{display:flex;gap:12px;justify-content:center}
.error-page__links a{font-size:.88rem;color:#06b6d4;font-weight:500;padding:8px 16px;border:1px solid #06b6d4;border-radius:8px;transition:all .15s}
.error-page__links a:hover{background:#06b6d4;color:#fff}

/* ===== PAGE CONTENT (about, download, disclaimer) ===== */
.page-content{padding:16px 0 48px}
.page-content h1{font-size:1.5rem;font-weight:800;color:#0f172a;margin-bottom:20px}
.page-content h2{font-size:1.2rem;font-weight:700;color:#0f172a;margin:28px 0 10px}
.page-content p{font-size:.92rem;color:#475569;line-height:1.8;margin-bottom:14px}
.page-content ul{margin:0 0 14px 20px;list-style:disc}
.page-content li{font-size:.92rem;color:#475569;margin-bottom:6px;line-height:1.7}
.page-content a{color:#06b6d4}
.page-content a:hover{text-decoration:underline}
.page-content a.btn{text-decoration:none}
.page-content .btn--primary{color:#fff}
.page-content .btn--white{color:#0f172a}
.page-content .btn--ghost{color:#fff}
.page-content .btn--outline{color:#06b6d4}

/* ── Download page hero ── */
.dl-hero{background:linear-gradient(135deg,#06b6d4,#0891b2);color:#fff;border-radius:16px;padding:48px 32px 40px;text-align:center;margin-bottom:36px}
.dl-hero__title{font-size:1.8rem;font-weight:800;margin-bottom:8px}
.dl-hero__desc{font-size:.95rem;opacity:.88;margin-bottom:24px}
.dl-hero__btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.dl-hero__btns .btn{padding:12px 28px;font-size:.95rem;border-radius:10px}

/* ── Platform grid ── */
.platform-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:36px}
.platform-card{background:#fff;border:2px solid #e2e8f0;border-radius:14px;padding:28px 24px;transition:border-color .2s}
.platform-card:hover{border-color:#06b6d4}
.platform-card__header{display:flex;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #f1f5f9}
.platform-card__icon{font-size:2rem;width:52px;height:52px;display:flex;align-items:center;justify-content:center;border-radius:14px;flex-shrink:0}
.platform-card__icon--android{background:#e8f5e9;color:#4caf50}
.platform-card__icon--ios{background:#f3f4f6;color:#1d1d1f}
.platform-card__name{font-size:1.15rem;font-weight:700;color:#0f172a}
.platform-card__badge{font-size:.72rem;color:#06b6d4;font-weight:600;background:#ecfeff;padding:2px 8px;border-radius:4px;margin-top:2px}

/* ── Steps timeline ── */
.steps{position:relative;padding-left:32px;margin-bottom:24px}
.steps::before{content:'';position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:#e2e8f0}
.step{position:relative;padding-bottom:18px}
.step:last-child{padding-bottom:0}
.step__dot{position:absolute;left:-32px;top:2px;width:22px;height:22px;border-radius:50%;background:#06b6d4;color:#fff;font-size:.65rem;font-weight:700;display:flex;align-items:center;justify-content:center;z-index:1}
.step__title{font-size:.9rem;font-weight:600;color:#0f172a;margin-bottom:3px}
.step__text{font-size:.82rem;color:#64748b;line-height:1.5}
.platform-card .btn{width:100%;margin-top:4px;padding:11px;font-size:.9rem}

/* ── Register tip banner ── */
.dl-tip{background:#ecfeff;border:1px solid #a5f3fc;border-radius:10px;padding:16px 20px;margin-bottom:36px;display:flex;align-items:center;gap:14px;font-size:.88rem;color:#155e75}
.dl-tip__icon{font-size:1.3rem;flex-shrink:0}
.dl-tip a{color:#06b6d4;font-weight:600}

/* ── FAQ cards ── */
.dl-faq{margin-bottom:12px}
.dl-faq__item{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:18px 20px;margin-bottom:10px}
.dl-faq__q{font-size:.9rem;font-weight:600;color:#0f172a;margin-bottom:5px}
.dl-faq__a{font-size:.82rem;color:#64748b;line-height:1.6}

/* ── Step cards (legacy) ── */
.step-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:22px;margin-bottom:14px}
.step-card__num{font-size:.72rem;font-weight:700;color:#06b6d4;margin-bottom:4px}
.step-card__title{font-size:.95rem;font-weight:600;color:#0f172a;margin-bottom:6px}
.step-card__text{font-size:.85rem;color:#475569;line-height:1.6}

/* ===== RESPONSIVE ===== */
@media(max-width:900px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .related__grid{grid-template-columns:1fr}
  .post-layout{flex-direction:column;gap:0}
  .post-toc{display:none}
  .post-toc-mobile{display:block}
  .footer-cta__inner{flex-direction:column;text-align:center}
}
@media(max-width:768px){
  .site-header__nav,.site-header .lang-switch,.site-header__cta{display:none}
  .site-header__burger{display:block}
  .kb-hero{padding:40px 0 36px}
  .kb-hero__title{font-size:1.5rem}
  .tags-grid{grid-template-columns:1fr}
  .site-footer__row{flex-direction:column;gap:12px;text-align:center}
  .site-footer__nav{justify-content:center}
  .site-footer__lang{justify-content:center}
}
@media(max-width:640px){
  .cat-grid{grid-template-columns:1fr}
  .latest-item{flex-direction:column;align-items:flex-start;gap:6px}
  .latest-item__meta{order:-1}
  .dl-cta{flex-direction:column;text-align:center}
  .dl-cta__links{justify-content:center}
  .platform-grid{grid-template-columns:1fr}
  .dl-tip{flex-direction:column;text-align:center;gap:8px}
}