/* intro.css — menu "Giới thiệu" (thả xuống khi trỏ chuột) + 3 trang /about, /blog, /guide.
   Dùng biến màu của styles.css nên giao diện tối (theme-dark.css) tự đổi theo. */

/* ---------------- dropdown trên header ---------------- */
.nav-dd{position:relative;height:100%;display:flex;align-items:center}
.topbar nav .nav-dd>a{display:flex;align-items:center;gap:5px}
.nav-dd-caret{width:12px;height:12px;transition:transform .15s}
.nav-dd:hover .nav-dd-caret,.nav-dd.open .nav-dd-caret,.nav-dd:focus-within .nav-dd-caret{transform:rotate(180deg)}
.nav-dd-menu{position:absolute;top:calc(100% - 6px);left:-14px;min-width:250px;padding:14px 8px 8px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 40px rgba(1,24,28,.22);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .15s,transform .15s,visibility .15s;z-index:30}
.nav-dd:hover .nav-dd-menu,.nav-dd:focus-within .nav-dd-menu,.nav-dd.open .nav-dd-menu{opacity:1;visibility:visible;transform:none}
.nav-dd-label{display:block;padding:2px 12px 10px;font:800 10px Manrope,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.topbar nav .nav-dd-menu a.nav-dd-item{display:flex;align-items:center;justify-content:flex-start;gap:12px;height:auto;padding:11px 12px;border-radius:10px;color:var(--ink);font-size:14px;font-weight:600;white-space:nowrap}
.topbar nav .nav-dd-menu a.nav-dd-item svg{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.topbar nav .nav-dd-menu a.nav-dd-item:hover{background:rgba(2,191,200,.1)}
.topbar nav .nav-dd-menu a.nav-dd-item.active{color:var(--green)}
.topbar nav .nav-dd-menu a.nav-dd-item:after{content:none}
.mobile-nav-label{display:block;padding:10px 10px 4px;font:800 10px Manrope,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:#6f9ba1}
.mobile-nav-drawer a.mnav-sub{padding-left:24px}   /* trang con trong nhóm (Giao dịch trong ngày: Radar dòng tiền, Phái sinh — 30/10/2026) */

/* ---------------- trang nội dung ---------------- */
.intro{max-width:1100px;margin:0 auto}
.intro-hero{padding:36px 0 28px;border-bottom:1px solid var(--line);margin-bottom:32px}
.intro-hero h1{font:600 40px/1.1 'Space Grotesk',sans-serif;letter-spacing:-.03em;margin:0 0 14px}
.intro-hero h1 em{font-style:normal;color:var(--green)}
.intro-hero p{max-width:680px;margin:0;color:var(--muted);font-size:15px;line-height:1.7}
.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.intro-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.intro-card h3{font:600 17px 'Space Grotesk',sans-serif;margin:0 0 8px}
.intro-card p{margin:0;color:var(--muted);line-height:1.65;font-size:13px}
.intro-sec{margin-bottom:36px}
.intro-sec h2{font:600 22px 'Space Grotesk',sans-serif;margin:0 0 10px}
.intro-sec p,.intro-sec li{color:var(--muted);line-height:1.75;font-size:14px}
.intro-draft{display:inline-block;margin-top:10px;padding:4px 10px;border:1px dashed var(--line);border-radius:999px;font-size:11px;font-weight:700;color:var(--muted)}
.intro-empty{text-align:center;padding:64px 20px;border:1px dashed var(--line);border-radius:16px;color:var(--muted)}
.intro-empty h2{font:600 20px 'Space Grotesk',sans-serif;color:var(--ink);margin:0 0 8px}
.intro-posts{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.intro-post{display:block;text-decoration:none;color:inherit;padding:22px 4px;border-bottom:1px solid var(--line)}
.intro-post small{color:var(--muted);font-weight:700;font-size:12px}
.intro-post h3{font:600 20px/1.35 'Space Grotesk',sans-serif;margin:6px 0 6px}
.intro-post:hover h3{color:var(--green)}
.intro-post p{margin:0;color:var(--muted);font-size:14px;line-height:1.65;max-width:760px}
.intro-article{max-width:760px;margin:0 auto;padding-top:28px}
.intro-back{color:var(--green);text-decoration:none;font-weight:700;font-size:13px}
.intro-article h1{font:600 34px/1.2 'Space Grotesk',sans-serif;letter-spacing:-.02em;margin:16px 0 8px}
.intro-date{color:var(--muted);font-size:13px;margin-bottom:28px}
.intro-article p,.intro-article li{font-size:16px;line-height:1.8}
.intro-article h2{font:600 22px 'Space Grotesk',sans-serif;margin:34px 0 8px}
.intro-fig{margin:24px 0}
.intro-fig img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:12px}
.intro-fig figcaption{margin-top:8px;color:var(--muted);font-size:12px}
.intro-note{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:13px!important}
.intro-guide{display:grid;grid-template-columns:230px 1fr;gap:32px;align-items:start}
.intro-toc{position:sticky;top:90px;display:flex;flex-direction:column;align-items:stretch;gap:2px;height:auto}
.intro-toc a{display:block;height:auto;place-items:normal;padding:9px 12px;border-radius:9px;text-decoration:none;color:var(--muted);font-weight:600;font-size:13px}
.intro-toc a:hover{background:rgba(2,191,200,.1);color:var(--ink)}
.intro-dl{margin:10px 0 14px;border-top:1px solid var(--line)}
.intro-dl>div{display:grid;grid-template-columns:190px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.intro-dl dt{font-weight:700;font-size:14px;color:var(--ink)}
.intro-dl dd{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.intro-go{display:inline-block;margin-top:4px;color:var(--green);font-weight:700;font-size:13px;text-decoration:none}
.intro-guide .intro-sec{scroll-margin-top:90px}
.intro-sec h3{font:600 17px 'Space Grotesk',sans-serif;margin:26px 0 8px;color:var(--ink)}
.intro-ul{margin:8px 0 14px;padding-left:20px}
.intro-ul li{margin-bottom:6px}
.intro-note-box{margin:14px 0;padding:12px 14px;border-left:3px solid var(--green2);background:rgba(2,191,200,.08);border-radius:0 10px 10px 0;font-size:13px!important}
.intro-guide .intro-fig{margin:18px 0 6px}
.intro-guide .intro-fig img{border:1px solid var(--line);border-radius:12px}
.intro-guide .intro-sec{padding-bottom:12px;border-bottom:1px solid var(--line)}
.intro-guide .intro-sec:last-child{border-bottom:0}
@media(max-width:900px){.intro-dl>div{grid-template-columns:1fr;gap:4px}.intro-grid{grid-template-columns:1fr}.intro-guide{grid-template-columns:1fr}.intro-toc{position:static;flex-direction:row;flex-wrap:wrap}.intro-hero h1,.intro-article h1{font-size:28px}}

/* ---------------- Blog: tab con + nhận định hằng ngày ---------------- */
.intro-tabs{display:flex;gap:6px;margin:0 0 22px;padding:4px;width:max-content;max-width:100%;background:var(--card);border:1px solid var(--line);border-radius:12px}
.intro-tabs button{border:0;background:transparent;color:var(--muted);font:700 13px Manrope,sans-serif;padding:9px 16px;border-radius:9px;cursor:pointer}
.intro-tabs button.active{background:var(--green2);color:#031d1f}
.intro-daily{max-width:860px}
.intro-daily .pf-msg{margin-bottom:22px}
.intro-more{display:block;margin:10px auto 0;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:10px 18px;font:700 13px Manrope,sans-serif;cursor:pointer}

/* 02/11/2026: nới rộng vừa phải 2 trang Về chúng tôi / Hướng dẫn sử dụng (không mở hết cỡ main 1750px như trang dữ liệu dạng lưới -
   văn bản dòng dài quá sẽ khó đọc), chỉ đưa lên ngang mức các trang cùng nhóm (Tài khoản, Gói dịch vụ dùng #account-page 1100px).
   Chỉ áp cho đúng 2 trang này qua :has(.about) / :has(.intro-guide), không đụng /account, /pricing, /blog. */
#account-page:has(.about),#account-page:has(.intro-guide){max-width:1400px}
.intro.about,.intro:has(.intro-guide){max-width:1400px}

/* ---------------- Về chúng tôi ---------------- */
.about{max-width:1400px}
.about-hero h1{font-size:46px}
.about-hello{font:600 20px 'Space Grotesk',sans-serif!important;color:var(--ink)!important;margin-top:4px!important}
.about-sec{margin:0 0 28px}
.about-sec h2{font:600 26px/1.25 'Space Grotesk',sans-serif;letter-spacing:-.02em;margin:0 0 12px}
.about-sec>p,.about-cols p{color:var(--muted);font-size:15.5px;line-height:1.85;margin:0 0 14px}
.about-cols{max-width:none}
.about-quote{margin:6px 0 20px;padding:18px 22px;border-left:4px solid var(--green2);background:rgba(2,191,200,.08);border-radius:0 14px 14px 0;font:600 19px/1.55 'Space Grotesk',sans-serif;color:var(--ink)}
.about-quote.big{font-size:23px;padding:24px 28px;margin-top:22px}
.about-lead{color:var(--ink)!important;font-weight:700}
.about-cards{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin:20px 0}
.about-cards .about-card{grid-column:span 2}
.about-cards .about-card:nth-child(n+4):nth-last-child(-n+2){grid-column:span 3}
.about-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.about-card h3{font:600 17px/1.35 'Space Grotesk',sans-serif;margin:0 0 8px}
.about-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.about-no{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--green2);color:#031d1f;font:700 14px 'Space Grotesk',sans-serif;margin-bottom:12px}
.about-end{font-style:italic}
.about-close{display:flex;flex-direction:column;gap:8px;align-items:center;text-align:center;padding:44px 20px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(2,191,200,.12),transparent)}
.about-close b{font:700 22px 'Space Grotesk',sans-serif;letter-spacing:.04em}
.about-close span{color:var(--green);font:600 18px 'Space Grotesk',sans-serif}
.about-close small{max-width:640px;margin-top:14px;color:var(--muted);font-size:12.5px;line-height:1.7}
@media(max-width:900px){.about-cards{grid-template-columns:1fr}.about-cards .about-card,.about-cards .about-card:nth-child(n+4):nth-last-child(-n+2){grid-column:auto}.about-hero h1{font-size:32px}}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:0 0 28px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.about-stats>div{display:flex;flex-direction:column;gap:4px;padding:20px 22px;background:var(--card)}
.about-stats b{font:700 28px 'Space Grotesk',sans-serif;color:var(--green);letter-spacing:-.02em}
.about-stats span{color:var(--muted);font-size:13px;line-height:1.5}
.about-card .intro-go{margin-top:12px}
.about-sec a{color:var(--green)}
@media(max-width:900px){.about-stats{grid-template-columns:repeat(2,1fr)}}
.about .intro-hero{margin-bottom:24px;padding-bottom:20px}