/* ============================================
   dy-binance.com — Swipe-style: navy + coral
   ============================================ */
:root{
  --navy:#1a2238;--navy-light:#2d3a56;--coral:#ff6b6b;--coral-dark:#e85d5d;
  --text:#6e7a8a;--text2:#a0aab4;--bg:#fff;--bg2:#f7f9fc;--bg3:#eef1f6;
  --green:#10b981;--red:#ef4444;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;color:var(--navy);background:#fff;line-height:1.7;font-size:16px}
a{color:var(--coral);text-decoration:none;transition:color .2s}
a:hover{color:var(--coral-dark)}
.container{max-width:1100px;margin:0 auto;padding:0 24px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:8px;cursor:pointer;border:2px solid transparent;transition:all .25s;font-size:15px;padding:12px 28px;text-decoration:none;line-height:1.4}
.btn--coral{background:var(--coral);color:#fff;border-color:var(--coral)}
.btn--coral:hover{background:var(--coral-dark);border-color:var(--coral-dark);color:#fff;transform:translateY(-1px);box-shadow:0 4px 14px rgba(255,107,107,.3)}
.btn--dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn--dark:hover{background:var(--navy-light);border-color:var(--navy-light);color:#fff}
.btn--outline{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn--outline:hover{background:var(--navy);color:#fff}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn--outline-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);color:#fff}
.btn--white{background:#fff;color:var(--navy);border-color:#fff}
.btn--white:hover{background:#f0f2f5;color:var(--navy)}
.btn--sm{padding:8px 20px;font-size:13px}
.btn--lg{padding:14px 32px;font-size:16px}
.btn--full{width:100%}

/* Section */
.sec{padding:80px 0}
.sec--alt{background:var(--bg2)}
.sec--dark{background:var(--navy);color:#fff}
.sec-title{font-size:32px;font-weight:800;color:var(--navy);margin-bottom:12px;line-height:1.25;letter-spacing:-.5px}
.sec--dark .sec-title{color:#fff}
.sec-desc{font-size:16px;color:var(--text);max-width:540px;line-height:1.7}
.sec--dark .sec-desc{color:var(--text2)}
.sec-center{text-align:center}
.sec-center .sec-desc{margin:0 auto}

/* ===== Header (Swipe: clean, simple) ===== */
.hdr{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid #eef1f6;transition:box-shadow .3s}
.hdr.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.05)}
.hdr__inner{display:flex;align-items:center;height:60px;gap:24px}
.hdr__brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;color:var(--navy);flex-shrink:0}
.hdr__brand svg{width:28px;height:28px}
.hdr__nav{display:flex;gap:4px;margin-left:auto}
.hdr__nav a{font-size:14px;color:var(--text);font-weight:500;padding:6px 14px;border-radius:6px;transition:all .2s}
.hdr__nav a:hover{color:var(--navy)}
.lang-switch{display:flex;gap:3px}
.lang-switch a{font-size:11px;padding:3px 7px;border-radius:4px;color:var(--text2);font-weight:600;transition:all .15s}
.lang-switch a:hover,.lang-switch a.active{color:var(--navy);background:var(--bg3)}
.hdr__cta{padding:8px 22px;background:transparent;color:var(--navy);border:2px solid var(--navy);border-radius:8px;font-size:13px;font-weight:700;white-space:nowrap;transition:all .2s}
.hdr__cta:hover{background:var(--navy);color:#fff}
.hdr__burger{display:none;background:none;border:none;color:var(--navy);cursor:pointer}
.hdr__burger svg{width:24px;height:24px}
@media(max-width:768px){.hdr__nav,.lang-switch{display:none}.hdr__burger{display:block}}

/* Mobile */
.mob{display:none;position:fixed;inset:0;background:rgba(255,255,255,.98);z-index:200;flex-direction:column;align-items:center;justify-content:center;gap:20px}
.mob--open{display:flex}
.mob__close{position:absolute;top:16px;right:16px;background:none;border:none;cursor:pointer;color:var(--navy)}
.mob__close svg{width:28px;height:28px}
.mob a{font-size:1.1rem;color:var(--navy);font-weight:500}
.mob a:hover{color:var(--coral)}
.mob__lang{display:flex;gap:8px;margin-top:12px}
.mob__lang a{font-size:.85rem;padding:6px 12px;border-radius:4px;color:var(--text)}
.mob__lang a.on{background:var(--bg3);color:var(--navy)}

/* ===== Hero (Swipe: centered, minimal) ===== */
.hero{padding:64px 0 48px;text-align:center}
.hero__title{font-size:clamp(32px,6vw,52px);font-weight:800;color:var(--navy);line-height:1.1;margin-bottom:20px;letter-spacing:-1px}
.hero__title span{color:var(--coral)}
.hero__desc{font-size:17px;color:var(--text);max-width:520px;margin:0 auto 32px;line-height:1.8}
.hero__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Coin Cards (no scroll, grid) ===== */
.coins{padding:48px 0}
.coins__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:900px){.coins__grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.coins__grid{grid-template-columns:1fr}}
.coin-card{background:#fff;border:1px solid var(--bg3);border-radius:12px;padding:20px;display:flex;align-items:center;gap:14px;transition:all .3s}
.coin-card:hover{border-color:var(--coral);box-shadow:0 4px 16px rgba(255,107,107,.08)}
.coin-card__icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:#fff;flex-shrink:0}
.coin-card__info{flex:1;min-width:0}
.coin-card__name{font-size:15px;font-weight:700;color:var(--navy)}
.coin-card__pair{font-size:12px;color:var(--text2)}
.coin-card__right{text-align:right}
.coin-card__price{font-size:15px;font-weight:700;color:var(--navy)}
.coin-card__change{font-size:12px;font-weight:600;padding:2px 8px;border-radius:4px;display:inline-block;margin-top:2px}
.coin-card__change--up{color:var(--green);background:rgba(16,185,129,.1)}
.coin-card__change--down{color:var(--red);background:rgba(239,68,68,.1)}

/* ===== 3 Feature Icons (Swipe: simple centered) ===== */
.feat3{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;text-align:center}
@media(max-width:768px){.feat3{grid-template-columns:1fr;gap:32px}}
.feat3__icon{width:56px;height:56px;background:var(--bg2);border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:var(--navy)}
.feat3__title{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:6px}
.feat3__desc{font-size:14px;color:var(--text);line-height:1.7}

/* ===== Alternating 2-col (Swipe: clean, left text) ===== */
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media(max-width:768px){.alt-row{grid-template-columns:1fr;gap:24px}}
.alt-row--reverse .alt-row__visual{order:-1}
@media(max-width:768px){.alt-row--reverse .alt-row__visual{order:0}}
.alt-row__visual{background:var(--bg2);border-radius:16px;padding:48px;display:flex;align-items:center;justify-content:center;min-height:260px;color:var(--navy)}
.alt-row__content h3{font-size:26px;font-weight:800;color:var(--navy);margin-bottom:14px;line-height:1.25;letter-spacing:-.3px}
.alt-row__content p{font-size:15px;color:var(--text);margin-bottom:18px;line-height:1.8}
.alt-row__list{list-style:none;margin-bottom:24px}
.alt-row__list li{padding:6px 0;font-size:14px;color:var(--text);display:flex;align-items:flex-start;gap:10px;line-height:1.6}
.alt-row__list li::before{content:'';width:6px;height:6px;background:var(--coral);border-radius:50%;flex-shrink:0;margin-top:8px}

/* ===== Stats (Swipe: big numbers) ===== */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;text-align:center;padding:56px 0}
@media(max-width:600px){.stats{grid-template-columns:1fr;gap:24px}}
.stat__num{font-size:48px;font-weight:800;color:var(--navy);letter-spacing:-1px;line-height:1}
.stat__label{font-size:14px;color:var(--text);margin-top:8px;line-height:1.6}

/* ===== FAQ (Swipe: single col accordion) ===== */
.faq-list{max-width:720px;margin:36px auto 0;border-top:1px solid var(--bg3)}
.faq-item{border-bottom:1px solid var(--bg3)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 0;background:none;border:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--navy);text-align:left;gap:16px}
.faq-q svg{flex-shrink:0;transition:transform .3s;color:var(--text2)}
.faq-item.open .faq-q svg{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 0 20px;font-size:15px;color:var(--text);line-height:1.8}

/* FAQ open grid (2-col, no collapse) */
.faq-open-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:768px){.faq-open-grid{grid-template-columns:1fr}}
.faq-open-card{background:#fff;border-radius:12px;padding:24px 28px;border:1px solid var(--bg3);transition:all .3s}
.faq-open-card:hover{border-color:var(--coral);box-shadow:0 4px 16px rgba(255,107,107,.06)}
.faq-open-card__q{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:10px;line-height:1.5;display:flex;align-items:center;gap:10px}
.faq-open-card__icon{width:36px;height:36px;min-width:36px;background:var(--bg2);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--coral);flex-shrink:0}
.faq-open-card__a{font-size:14px;color:var(--text);line-height:1.8}

/* ===== Bottom CTA (Swipe: dark bg) ===== */
.bottom-cta{background:var(--navy);padding:72px 0;text-align:center;color:#fff}
.bottom-cta__label{font-size:13px;color:var(--coral);font-weight:600;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:10px}
.bottom-cta__title{font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.2;margin-bottom:14px}
.bottom-cta__desc{font-size:15px;color:var(--text2);max-width:460px;margin:0 auto 32px;line-height:1.7}
.bottom-cta__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Footer (Swipe: clean 3-col) ===== */
.ftr{background:#fff;border-top:1px solid var(--bg3);padding:48px 0 24px;color:var(--text)}
.ftr__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
@media(max-width:768px){.ftr__grid{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:480px){.ftr__grid{grid-template-columns:1fr}}
.ftr__brand{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.ftr__brand svg{width:24px;height:24px}
.ftr__desc{font-size:13px;line-height:1.7;color:var(--text)}
.ftr__lang{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.ftr__lang a{display:inline-block;padding:4px 10px;font-size:12px;color:var(--text);border:1px solid var(--bg3);border-radius:6px;transition:all .2s}
.ftr__lang a:hover,.ftr__lang a.active{color:var(--navy);border-color:var(--navy);background:var(--bg2)}
.ftr__col h4{font-size:14px;font-weight:700;color:var(--navy);margin-bottom:14px}
.ftr__col ul{list-style:none}
.ftr__col li{margin-bottom:8px}
.ftr__col a{color:var(--text);font-size:13px;transition:color .2s}
.ftr__col a:hover{color:var(--coral)}
.ftr__bottom{border-top:1px solid var(--bg3);padding-top:20px;font-size:12px;color:var(--text2)}
.ftr__risk{margin-bottom:8px;line-height:1.7}
.ftr__risk strong{color:var(--text)}

/* Download page */
.dl-hero{background:var(--navy);color:#fff;padding:56px 0;text-align:center}
.dl-hero h1{font-size:2rem;font-weight:800;margin-bottom:12px}
.dl-hero p{font-size:1rem;color:var(--text2);max-width:480px;margin:0 auto}
.dl-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{background:#fff;border-radius:12px;padding:28px;text-align:center;border:1px solid var(--bg3);transition:all .3s}
.dl-card:hover{border-color:var(--coral);box-shadow:0 6px 20px rgba(255,107,107,.08)}
.dl-badge{display:inline-block;color:#fff;font-size:.75rem;font-weight:700;padding:4px 14px;border-radius:20px;margin-bottom:16px;letter-spacing:1px}
.dl-card h2{font-size:1.1rem;font-weight:700;color:var(--navy);margin-bottom:14px}
.dl-card ul{list-style:none;text-align:left;margin-bottom:20px;padding:0}
.dl-card li{padding:6px 0;font-size:.88rem;color:var(--text);border-bottom:1px solid var(--bg3)}
.dl-card li:last-child{border-bottom:none}
@media(max-width:768px){.dl-grid3{grid-template-columns:1fr}}

/* Page */
.page-content{padding:48px 0 60px}
.page-content h1{font-size:28px;font-weight:800;margin-bottom:20px;color:var(--navy)}
.page-content h2{font-size:20px;font-weight:700;margin:28px 0 12px;color:var(--navy)}
.page-content p{color:var(--text);line-height:1.85;margin-bottom:14px}

/* Back to top */
.back-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;background:var(--navy);color:#fff;border:none;border-radius:8px;cursor:pointer;opacity:0;transform:translateY(10px);transition:all .3s;box-shadow:0 2px 10px rgba(26,34,56,.2);z-index:50;display:flex;align-items:center;justify-content:center}
.back-top--show{opacity:1;transform:translateY(0)}
.back-top svg{width:20px;height:20px}