/* boivela.com — trang giới thiệu + pháp lý. Cùng bộ token với app (frontend/src/theme.css). Tĩnh hoàn toàn, không build, không hiệu ứng chạy liên tục (CLAUDE.md mục Giao diện). */ :root { --bg: #071417; --bg-2: #040e11; --surface: #0e2126; --surface-2: #0a1a1e; --border: #1d3a3f; --neon: #2ff5d6; --neon-lt: #7cffe8; --neon-dim: #16a894; --amber: #ffb45c; --violet: #a78bfa; --text: #e8fffb; --muted: #8fb3b0; --dim: #5d807e; --radius: 16px; --gutter: 24px; color-scheme: dark; } * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%) fixed; color: var(--text); font: 16px/1.65 Inter, ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif; min-height: 100vh; } a { color: var(--neon-lt); } a:hover { color: var(--neon); } img, svg { display: block; } /* Song ngữ: mỗi đoạn mang lang="vi" hoặc lang="en", chọn bên hiện. */ html[data-lang="vi"] [lang="en"]:not(html), html[data-lang="en"] [lang="vi"]:not(html) { display: none !important; } .wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--gutter); } .wrap--doc { max-width: 780px; } /* ---------------------------------------------------------------- header */ .top { position: sticky; top: 0; z-index: 10; background: rgba(7, 20, 23, 0.94); border-bottom: 1px solid rgba(29, 58, 63, 0.7); } .top .wrap { display: flex; align-items: center; gap: 18px; height: 64px; } .brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 19px; letter-spacing: -0.01em; } .brand svg { width: 30px; height: 30px; color: #3fe08f; } .brand:hover { color: var(--text); } .nav { display: flex; align-items: center; gap: 18px; margin-left: auto; font-size: 14px; } .nav a { color: var(--muted); text-decoration: none; } .nav a:hover { color: var(--neon-lt); } .lang { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; } .lang button { background: none; border: 0; color: var(--muted); font: 600 12px/1 inherit; padding: 7px 11px; cursor: pointer; } html[data-lang="vi"] .lang [data-set="vi"], html[data-lang="en"] .lang [data-set="en"] { background: var(--surface); color: var(--neon); } .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 12px; font-weight: 700; font-size: 15px; text-decoration: none; color: #04221d; background: linear-gradient(135deg, var(--neon) 0%, var(--neon-lt) 100%); border: 0; transition: transform 0.12s ease, box-shadow 0.12s ease; box-shadow: 0 6px 24px rgba(47, 245, 214, 0.18); } .btn:hover { color: #04221d; transform: translateY(-1px); box-shadow: 0 8px 28px rgba(47, 245, 214, 0.28); } .btn--ghost { background: none; color: var(--text); border: 1px solid var(--border); box-shadow: none; } .btn--ghost:hover { color: var(--neon-lt); border-color: var(--neon-dim); box-shadow: none; } .nav .btn { padding: 8px 14px; font-size: 13.5px; color: #04221d; } /* ---------------------------------------------------------------- trang chủ */ .hero { padding: 88px 0 56px; text-align: center; } .eyebrow { display: inline-block; padding: 5px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--neon-lt); font-size: 12.5px; font-weight: 600; letter-spacing: 0.02em; margin-bottom: 20px; } .hero h1 { font-size: clamp(34px, 6vw, 60px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -0.025em; } .grad { background: linear-gradient(90deg, var(--neon) 0%, var(--neon-lt) 45%, var(--violet) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; } .hero p { color: var(--muted); font-size: clamp(16px, 2vw, 19px); max-width: 640px; margin: 0 auto 30px; } .hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; } .hero small { display: block; margin-top: 16px; color: var(--dim); font-size: 13px; } .section { padding: 48px 0; } .section h2 { font-size: clamp(24px, 3.2vw, 32px); margin: 0 0 8px; letter-spacing: -0.015em; } .section .sub { color: var(--muted); margin: 0 0 28px; } .grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); } .card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; min-width: 0; } .card h3 { margin: 0 0 6px; font-size: 16.5px; } .card p { margin: 0; color: var(--muted); font-size: 14.5px; } .card .tag { font-size: 12px; font-weight: 700; color: var(--neon); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 10px; display: block; } .steps { counter-reset: s; } .steps .card::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--neon-dim); color: var(--neon); font-weight: 700; font-size: 14px; margin-bottom: 12px; } .models { display: flex; flex-wrap: wrap; gap: 8px; } .models span { padding: 7px 12px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-2); color: var(--text); font-size: 13.5px; } .band { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 32px; text-align: center; } .band h2 { margin-bottom: 8px; } .band p { color: var(--muted); margin: 0 auto 22px; max-width: 560px; } /* ---------------------------------------------------------------- văn bản pháp lý */ .doc { padding: 48px 0 64px; } .doc h1 { font-size: clamp(28px, 4.5vw, 40px); margin: 0 0 6px; letter-spacing: -0.02em; } .doc .meta { color: var(--dim); font-size: 14px; margin: 0 0 28px; } .doc h2 { font-size: 20px; margin: 36px 0 10px; color: var(--neon-lt); letter-spacing: -0.005em; } .doc h3 { font-size: 16.5px; margin: 22px 0 6px; } .doc p, .doc li { color: #cfe9e5; } .doc ul, .doc ol { padding-left: 22px; } .doc li { margin: 4px 0; } .doc table { width: 100%; border-collapse: collapse; margin: 12px 0 8px; font-size: 14.5px; display: block; overflow-x: auto; } .doc th, .doc td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--border); } .doc th { color: var(--muted); font-weight: 600; white-space: nowrap; } .doc .box { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--neon); border-radius: 12px; padding: 14px 18px; margin: 18px 0; } .doc .box p { margin: 0; } .toc { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px 14px 36px; margin: 0 0 8px; font-size: 14.5px; } .toc li { margin: 2px 0; } /* ---------------------------------------------------------------- footer */ .foot { border-top: 1px solid rgba(29, 58, 63, 0.7); padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); margin-top: 32px; font-size: 13.5px; color: var(--dim); } .foot .wrap { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; } .foot a { color: var(--muted); text-decoration: none; } .foot a:hover { color: var(--neon-lt); } .foot .links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-left: auto; } @media (max-width: 720px) { :root { --gutter: 16px; } .nav .hide-sm { display: none; } .hero { padding: 56px 0 36px; } .band { padding: 24px 18px; } .foot .links { margin-left: 0; } } @media (prefers-reduced-motion: reduce) { * { transition: none !important; } }