:root {
      --ink: #0b303b;          /* section titles */
      --ink-soft: #41535e;     /* body / subtitle */
      --muted: #566772;
      --label: #1051a3;
      --primary: #1073e6;
      --primary-strong: #0b5cc0;
      --primary-soft: rgba(16,115,230,.10);
      --bg: #ffffff;
      --soft: #eef5fe;         /* alternating section bg + cards */
      --border: #d7e8fb;
      --border-neutral: #e5e7eb;
      --dark: #0d1114;         /* dark feature section */
      --navy: #0d2840;         /* footer */
      --danger: #ef492d;
      --r: 16px; --r-lg: 24px; --pill: 999px;
      --shadow: 0 1px 2px rgba(11,48,59,.05);
      --shadow-lg: 0 30px 70px rgba(11,48,59,.14);
      --maxw: 1440px;         /* container đồng nhất: header · body · footer */
      --sx: 24px;
    }
    html[data-theme="dark"] {
      --ink: #eef2f6; --ink-soft: #aab6c2; --muted: #8a97a3; --label: #5aa2f5;
      --bg: #0b0f13; --soft: #12181f; --border: #223040; --border-neutral: #223040;
      --shadow: none; --shadow-lg: 0 30px 70px rgba(0,0,0,.5);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
      color: var(--ink-soft); background: var(--bg); -webkit-font-smoothing: antialiased; line-height: 1.5;
      transition: background .3s, color .3s; }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    h1,h2,h3,h4 { color: var(--ink); margin: 0; font-weight: 700; letter-spacing: -.02em; }
    p { margin: 0; }
    .wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--sx); }

    /* buttons (pill, radius 500) */
    .btn { display:inline-flex; align-items:center; gap:8px; height:48px; padding:0 24px; border-radius:var(--pill);
      font-size:15px; font-weight:700; cursor:pointer; border:1px solid transparent; white-space:nowrap;
      transition: transform .12s, background .15s, box-shadow .15s, border-color .15s; }
    .btn:active { transform: translateY(1px); }
    .btn-primary { background:var(--primary); color:#fff; box-shadow:0 8px 22px rgba(16,115,230,.30); }
    .btn-primary:hover { background:var(--primary-strong); box-shadow:0 12px 28px rgba(16,115,230,.38); }
    .btn-ghost { background:transparent; color:var(--ink); border-color:var(--border-neutral); font-weight:600; }
    .btn-ghost:hover { border-color:#c3ccd8; }
    .btn-sm { height:40px; padding:0 18px; font-size:14px; }
    .btn-lg { height:54px; padding:0 30px; font-size:16px; }
    .btn .arw { transition: transform .15s; }
    .btn:hover .arw { transform: translateX(3px); }

    /* header — CHƯA cuộn: phẳng, trong suốt. KHI cuộn: pill nổi bo tròn có bóng. */
    header { position:sticky; top:0; z-index:60; padding:0; transition:padding .28s ease; }
    header .bar { display:flex; align-items:center; gap:14px; height:70px; padding:0 4px;
      background:transparent; border:1px solid transparent; border-radius:0; box-shadow:none;
      transition:height .28s ease, padding .28s ease, background .28s ease, border-color .28s ease, border-radius .28s ease, box-shadow .28s ease, backdrop-filter .28s ease; }
    header.scrolled { padding:14px 0; }
    header.scrolled .bar { height:60px; padding:0 12px 0 22px;
      background:color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter:saturate(180%) blur(16px);
      border-color:var(--border-neutral); border-radius:40px; box-shadow:0 12px 32px rgba(11,48,59,.14); }
    .brand { display:inline-flex; flex-direction:row; align-items:center; gap:9px; line-height:1; color:var(--ink); }
    .brand-ico { color:var(--ink); display:inline-flex; flex:none; }
    .brand-ico svg { display:block; height:28px; width:auto; }
    .brand-live { font-size:20px; font-weight:800; letter-spacing:-.02em; color:var(--ink); }
    .nav-links { display:flex; align-items:center; gap:24px; margin-left:20px; }
    .nav-links a { font-size:15px; font-weight:600; color:var(--ink); opacity:.9; }
    .nav-links a:hover { color:var(--primary); opacity:1; }
    .hot-badge { font-size:8px; font-weight:800; letter-spacing:.04em; text-transform:uppercase; color:#fff;
      background:linear-gradient(90deg,#ff6a3d,#e5556b); padding:1px 5px; border-radius:var(--pill);
      box-shadow:0 2px 7px rgba(229,85,107,.4); animation:hotpulse 1.8s ease-in-out infinite; }
    @keyframes hotpulse { 0%,100%{ transform:scale(1); box-shadow:0 3px 10px rgba(229,85,107,.4); }
      50%{ transform:scale(1.09); box-shadow:0 5px 15px rgba(229,85,107,.6); } }
    .nav-right { margin-left:auto; display:flex; align-items:center; gap:12px; }
    .lang-pill { display:inline-flex; align-items:center; gap:6px; height:40px; padding:0 12px; border:1px solid var(--border-neutral);
      border-radius:var(--pill); font-size:14px; font-weight:600; color:var(--muted); background:transparent; cursor:pointer; }
    .hamburger { display:none; width:44px; height:44px; border:1px solid var(--border-neutral); border-radius:12px;
      background:transparent; color:var(--ink); align-items:center; justify-content:center; cursor:pointer; }

    /* section scaffold */
    section.block { padding:84px 0; }
    section.block.soft { background:var(--soft); }
    section.block.dark { background:var(--dark); }
    .head { text-align:center; max-width:640px; margin:0 auto 52px; }
    .label { display:inline-block; font-size:12px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; color:var(--label); }
    .head h2 { font-size:clamp(30px,4vw,40px); font-weight:700; line-height:1.15; margin-top:14px; }
    .head p { margin-top:14px; color:var(--ink-soft); font-size:17px; font-weight:500; }
    .dark .head h2 { color:#fff; } .dark .head p { color:#aab6c2; } .dark .label { color:#7fb4f7; }

    /* reveal — chỉ ẩn khi JS đã thêm .pre (không JS => nội dung vẫn hiện) */
    .reveal { transition:opacity .6s ease, transform .6s ease; }
    .reveal.pre { opacity:0; transform:translateY(22px); }

    /* ---------- HERO ---------- */
    .hero { position:relative; text-align:center; padding:76px 0 54px; overflow:hidden; }
    .hero::before { content:""; position:absolute; inset:-30% -10% auto -10%; height:640px; z-index:-1;
      background:
        radial-gradient(46% 55% at 22% 0%, rgba(16,115,230,.16), transparent 70%),
        radial-gradient(44% 55% at 82% 8%, rgba(245,180,80,.14), transparent 70%),
        linear-gradient(180deg,var(--soft),var(--bg)); }
    .trust-pill { display:inline-flex; align-items:center; gap:8px; height:36px; padding:0 16px; border:1px solid var(--border);
      border-radius:var(--pill); background:var(--bg); font-size:13px; font-weight:600; color:var(--muted); box-shadow:var(--shadow); }
    .stars { color:#f5b400; letter-spacing:1px; }
    .hero h1 { font-size:clamp(38px,6vw,64px); font-weight:700; line-height:1.05; margin-top:22px; letter-spacing:-.03em; }
    .word-rot { color:var(--primary); display:inline-block; min-width:2ch; transition:opacity .3s, transform .3s; }
    .word-rot.wr-out { opacity:0; transform:translateY(-8px); }
    .hero .sub { max-width:600px; margin:20px auto 0; font-size:clamp(16px,2vw,19px); color:var(--ink-soft); font-weight:500; }
    .hero-cta { margin-top:30px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

    /* trust stats */
    .stats { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin:56px auto 0; max-width:860px; }
    .stat b { display:block; font-size:clamp(26px,3.4vw,36px); font-weight:800; color:var(--ink); letter-spacing:-.02em; }
    .stat span { font-size:13.5px; color:var(--muted); }

    /* logos marquee */
    .marquee { margin-top:52px; -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
      mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent); overflow:hidden; }
    .marquee-track { display:flex; gap:56px; width:max-content; animation:scrollx 32s linear infinite; }
    .marquee:hover .marquee-track { animation-play-state:paused; }
    .logo-word { font-size:19px; font-weight:800; color:#9aa8b4; letter-spacing:.06em; white-space:nowrap; opacity:.7; }
    @keyframes scrollx { to { transform:translateX(-50%); } }

    /* ---------- Tool mock card ---------- */
    .tool-card { max-width:640px; margin:0 auto; background:var(--bg); border:1px solid var(--border-neutral);
      border-radius:var(--r-lg); box-shadow:var(--shadow-lg); padding:22px; text-align:left; }
    .seg { display:grid; grid-template-columns:repeat(3,1fr); gap:4px; background:var(--soft); border-radius:var(--pill); padding:4px; }
    .seg button { border:0; background:transparent; height:42px; border-radius:var(--pill); font:inherit; font-weight:600; font-size:14px;
      color:var(--muted); cursor:pointer; display:flex; align-items:center; justify-content:center; gap:7px; transition:.15s; }
    .seg button.active { background:var(--bg); color:var(--primary); box-shadow:var(--shadow); }
    .lang-row { display:flex; align-items:center; gap:10px; margin-top:18px; }
    .select { flex:1; height:56px; border:1px solid var(--border-neutral); border-radius:14px; padding:0 16px; display:flex; flex-direction:column; justify-content:center; background:var(--bg); cursor:pointer; }
    .select small { font-size:10px; letter-spacing:.12em; color:var(--muted); font-weight:700; text-transform:uppercase; }
    .select span { font-size:15px; font-weight:600; color:var(--ink); display:flex; align-items:center; justify-content:space-between; }
    .swap { width:46px; height:46px; flex:none; border:1px solid var(--border-neutral); border-radius:50%; background:var(--bg);
      display:grid; place-items:center; cursor:pointer; color:var(--muted); transition:.25s; }
    .swap:hover { color:var(--primary); border-color:var(--primary); transform:rotate(180deg); }
    .toggle-row { display:flex; align-items:center; gap:10px; margin-top:16px; font-size:14px; color:var(--ink); font-weight:600; }
    .toggle { margin-left:auto; width:44px; height:26px; border-radius:var(--pill); background:var(--soft); border:1px solid var(--border-neutral); position:relative; cursor:pointer; transition:.15s; }
    .toggle::after { content:""; position:absolute; top:3px; left:3px; width:18px; height:18px; border-radius:50%; background:#fff; box-shadow:0 1px 3px rgba(0,0,0,.25); transition:.18s; }
    .toggle.on { background:var(--primary); border-color:var(--primary); } .toggle.on::after { left:22px; }
    .mic-zone { margin-top:26px; display:flex; flex-direction:column; align-items:center; gap:14px; }
    .mic-hint { font-size:13px; font-weight:700; color:var(--primary); background:var(--primary-soft); padding:6px 14px; border-radius:var(--pill); }
    .mic-btn { width:76px; height:76px; border-radius:50%; border:0; cursor:pointer; color:#fff; display:grid; place-items:center;
      background:radial-gradient(120% 120% at 30% 20%,#ff6f7d,#e5556b); box-shadow:0 12px 30px rgba(229,85,107,.4); transition:transform .12s; }
    .mic-btn:hover { transform:scale(1.06); }
    .mic-btn.rec { animation:pulse 1.6s ease-out infinite; }
    @keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(229,85,107,.45);} 100%{box-shadow:0 0 0 22px rgba(229,85,107,0);} }

    /* ---------- Tool showcase (tabs + split) ---------- */
    .pill-tabs { display:flex; gap:4px; width:fit-content; max-width:100%; margin:0 auto 44px; padding:5px;
      background:var(--soft); border:1px solid var(--border); border-radius:var(--pill); flex-wrap:wrap; justify-content:center; }
    .pill-tab { height:42px; padding:0 22px; border-radius:var(--pill); border:0; background:transparent;
      font:inherit; font-size:14.5px; font-weight:700; color:var(--muted); cursor:pointer; transition:color .18s, background .18s, box-shadow .18s; }
    .pill-tab:hover { color:var(--ink); }
    .pill-tab.active { background:var(--primary); color:#fff; box-shadow:0 6px 16px rgba(16,115,230,.28); }
    .showcase { display:none; grid-template-columns:1fr 1.1fr; gap:48px; align-items:center; }
    .showcase.active { display:grid; animation:fade .35s ease; }
    @keyframes fade { from{opacity:0; transform:translateY(10px);} }
    .showcase h3 { font-size:26px; font-weight:700; }
    .showcase .desc { margin-top:12px; color:var(--ink-soft); font-size:16px; }
    .sc-links { margin-top:24px; display:flex; flex-direction:column; gap:12px; }
    .sc-link { display:flex; align-items:center; gap:14px; padding:15px 16px; border:1px solid var(--border-neutral); border-radius:14px;
      background:var(--bg); cursor:pointer; transition:transform .16s ease, box-shadow .16s ease, border-color .16s ease; }
    .sc-link:hover { border-color:var(--primary); box-shadow:0 12px 26px rgba(11,48,59,.09); transform:translateY(-2px); }
    .sc-ico { width:42px; height:42px; flex:none; border-radius:11px; display:grid; place-items:center; color:#fff; font-size:18px; }
    .sc-txt b { display:block; color:var(--ink); font-size:15px; font-weight:700; }
    .sc-txt span { font-size:13px; color:var(--muted); }
    .sc-tag { margin-left:auto; font-size:10.5px; font-weight:800; letter-spacing:.05em; text-transform:uppercase; padding:5px 10px; border-radius:var(--pill); white-space:nowrap; }
    .tag-up { color:var(--muted); background:var(--soft); border:1px solid var(--border-neutral); }
    .tag-live { color:#e5556b; background:rgba(229,85,107,.10); display:inline-flex; align-items:center; gap:5px; }
    .tag-live::before { content:""; width:6px; height:6px; border-radius:50%; background:#e5556b; }
    /* showcase visual: khung sản phẩm + bảng chọn ngôn ngữ nổi */
    .sc-visual { position:relative; padding-right:26px; }
    .sc-frame { border-radius:20px; overflow:hidden; border:1px solid var(--border-neutral); box-shadow:var(--shadow-lg);
      aspect-ratio:4/3; position:relative; background:radial-gradient(125% 105% at 18% 0%, #2f4b6e, #101a27 68%); }
    .sc-frame::after { content:""; position:absolute; inset:0;
      background:radial-gradient(58% 42% at 32% 26%, rgba(255,255,255,.10), transparent 62%); }
    .sc-frame .cap { position:absolute; left:16px; right:64px; bottom:16px; z-index:2; background:rgba(0,0,0,.5); color:#fff;
      font-size:13.5px; font-weight:600; line-height:1.4; padding:9px 13px; border-radius:11px; }
    .lang-panel { position:absolute; top:26px; right:0; width:160px; background:var(--bg); border:1px solid var(--border-neutral);
      border-radius:15px; box-shadow:var(--shadow-lg); padding:11px 10px; z-index:3; }
    .lang-panel h5 { font-size:12px; color:var(--primary); font-weight:800; margin:2px 6px 9px; }
    .lang-row { display:flex; align-items:center; gap:9px; padding:8px 9px; border-radius:10px; font-size:13px; font-weight:600; color:var(--ink); }
    .lang-row + .lang-row { margin-top:2px; }
    .lang-row.on { background:var(--primary); color:#fff; }

    /* ---------- Integrations ---------- */
    .int-groups { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
    .int-group { border:1px solid var(--border); border-radius:var(--r-lg); padding:24px; background:color-mix(in srgb,var(--primary) 3%, var(--bg)); }
    .int-badge { display:inline-block; font-size:12px; font-weight:700; letter-spacing:.04em; padding:6px 12px; border-radius:var(--pill); margin-bottom:18px; }
    .badge-live { color:#e5556b; background:rgba(229,85,107,.12); }
    .badge-plat { color:var(--primary); background:var(--primary-soft); }
    .int-cards { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
    .int-card { display:flex; align-items:center; gap:12px; border:1px solid var(--border); border-radius:12px; padding:14px; background:var(--bg); transition:.15s; }
    .int-card:hover { border-color:var(--primary); transform:translateY(-2px); box-shadow:var(--shadow); }
    .int-logo { width:38px; height:38px; flex:none; border-radius:10px; display:grid; place-items:center; color:#fff; font-weight:800; font-size:15px; }
    .int-card b { display:block; color:var(--ink); font-size:14px; font-weight:700; }
    .int-card span { font-size:12px; color:var(--muted); }
    .int-foot { text-align:center; margin-top:28px; }

    /* ---------- Text-image grid (dark) ---------- */
    .tig-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
    .tig-card { border-radius:var(--r-lg); overflow:hidden; border:1px solid rgba(255,255,255,.08); background:#151b22; }
    .tig-img { aspect-ratio:16/10; }
    .tig-body { padding:22px; }
    .tig-card h3 { color:#fff; font-size:18px; font-weight:700; }
    .tig-card p { margin-top:8px; color:#aab6c2; font-size:14.5px; }
    .tig-foot { text-align:center; margin-top:36px; }

    /* ---------- Icon grid (use cases) ---------- */
    .ig-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
    .ig-item { border:1px solid var(--border-neutral); border-radius:var(--r); padding:26px; background:var(--bg); box-shadow:var(--shadow); transition:.18s; }
    .ig-item:hover { transform:translateY(-3px); border-color:var(--border); box-shadow:0 14px 34px rgba(11,48,59,.08); }
    .ig-top { display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }
    .ig-ico { width:46px; height:46px; border-radius:12px; display:grid; place-items:center; }
    .ig-tags { display:flex; gap:6px; }
    .ig-item h3 { font-size:17px; font-weight:700; }
    .ig-item p { margin-top:8px; color:var(--ink-soft); font-size:14.5px; }

    /* ---------- Language ribbon (dark) ---------- */
    .ribbon-wrap { display:grid; grid-template-columns:.9fr 1.4fr; gap:40px; align-items:center; }
    .ribbon-left h3 { color:#fff; font-size:26px; font-weight:700; line-height:1.2; }
    .ribbon-left h3 .hl { color:#7fb4f7; }
    .ribbons { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; height:420px; overflow:hidden;
      -webkit-mask-image:linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent); mask-image:linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent); }
    .ribbon-col { display:flex; flex-direction:column; gap:12px; }
    .ribbon-col.up { animation:scrolly 26s linear infinite; }
    .ribbon-col.down { animation:scrolly 26s linear infinite reverse; }
    @keyframes scrolly { to { transform:translateY(-50%); } }
    .lang-chip { display:flex; align-items:center; gap:10px; padding:12px 14px; border-radius:12px; background:#151b22; border:1px solid rgba(255,255,255,.08); color:#e6edf3; font-size:14px; font-weight:600; }

    /* ---------- Reviews ---------- */
    .rate-pill { display:inline-flex; align-items:center; gap:8px; margin:0 auto 34px; }
    .reviews-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
    .review { background:var(--soft); border-radius:var(--r-lg); padding:24px; border:1px solid transparent; }
    html[data-theme="dark"] .review { border-color:var(--border); }
    .rv-head { display:flex; align-items:center; gap:12px; }
    .rv-avatar { width:40px; height:40px; border-radius:50%; display:grid; place-items:center; color:#fff; font-weight:800; font-size:14px; }
    .rv-name { font-weight:700; color:var(--ink); font-size:14px; }
    .rv-role { font-size:12px; color:var(--muted); }
    .rv-role-pill { font-size:11px; font-weight:700; color:var(--primary); background:var(--primary-soft); padding:2px 8px; border-radius:var(--pill); }
    .rv-stars { color:#f5b400; font-size:13px; margin:12px 0 8px; }
    .review h4 { font-size:15px; font-weight:700; margin-bottom:6px; }
    .review p { color:var(--ink-soft); font-size:14px; }

    /* ---------- FAQ ---------- */
    .faq { max-width:860px; margin:0 auto; }
    .faq-item { border-bottom:3px solid var(--ink); }
    .faq-q { width:100%; text-align:left; border:0; background:transparent; cursor:pointer; font:inherit; font-size:17px; font-weight:700; color:var(--ink);
      padding:22px 4px; display:flex; align-items:center; justify-content:space-between; gap:16px; }
    .faq-q .chev { transition:transform .2s; color:var(--primary); flex:none; }
    .faq-item.open .faq-q .chev { transform:rotate(180deg); }
    .faq-a { max-height:0; overflow:hidden; transition:max-height .28s ease; }
    .faq-a p { padding:0 4px 22px; color:var(--ink-soft); font-size:15.5px; }

    /* ---------- Footer ---------- */
    footer { background:var(--navy); color:#c6d2df; }
    .hook { text-align:center; padding:76px 0 60px; border-bottom:1px solid rgba(255,255,255,.08); }
    .hook h2 { color:#fff; font-size:clamp(28px,4vw,40px); font-weight:700; }
    .hook p { margin:14px auto 0; max-width:560px; color:#9fb0c2; font-size:17px; }
    .hook-cta { margin-top:28px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
    .btn-ondark { background:#fff; color:var(--navy); }
    .btn-ondark:hover { background:#eef5fe; }
    .btn-outline-dark { background:transparent; border-color:rgba(255,255,255,.25); color:#fff; }
    .foot-grid { display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:32px; padding:56px 0 8px; }
    .foot-brand .brand-ico { color:#fff; }
    .foot-brand .brand-live { color:#fff; }
    .foot-brand p { margin-top:16px; color:#9fb0c2; font-size:14px; max-width:300px; }
    .socials { display:flex; gap:10px; margin-top:18px; }
    .socials a { width:38px; height:38px; border-radius:10px; border:1px solid rgba(255,255,255,.14); display:grid; place-items:center; color:#c6d2df; transition:.15s; }
    .socials a:hover { background:rgba(255,255,255,.08); color:#fff; }
    .foot-col-title { color:#fff; font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:.08em; margin-bottom:16px; }
    .foot-col a { display:block; color:#9fb0c2; font-size:14.5px; padding:5px 0; }
    .foot-col a:hover { color:#fff; }
    .theme-row { display:flex; align-items:center; gap:10px; margin-top:22px; color:#9fb0c2; font-size:13px; }
    .theme-sw { width:52px; height:28px; border-radius:var(--pill); background:rgba(255,255,255,.12); position:relative; cursor:pointer; }
    .theme-sw::after { content:"☾"; position:absolute; top:3px; left:3px; width:22px; height:22px; border-radius:50%; background:#fff; color:#0d2840; display:grid; place-items:center; font-size:12px; transition:.18s; }
    html[data-theme="dark"] .theme-sw::after { content:"☀"; left:27px; }
    .foot-bottom { display:flex; align-items:center; justify-content:space-between; gap:16px; padding:22px 0 34px;
      margin-top:24px; border-top:1px solid rgba(255,255,255,.08); font-size:13px; color:#8397a9; flex-wrap:wrap; }
    .foot-bottom a { color:#9fb0c2; } .foot-bottom a:hover { color:#fff; }

    /* ---------- Responsive ---------- */
    /* Accessibility: skip-link + focus-visible */
    .skip-link { position:absolute; left:-9999px; top:0; z-index:200; background:var(--primary); color:#fff;
      padding:10px 16px; border-radius:0 0 10px 0; font-weight:700; font-size:14px; }
    .skip-link:focus { left:0; }
    a:focus-visible, button:focus-visible, .btn:focus-visible, [role="button"]:focus-visible, [tabindex]:focus-visible {
      outline:3px solid var(--primary); outline-offset:2px; border-radius:6px; }
    .nav-mobile-only { display:none; }

    @media (max-width:960px){
      /* Ẩn nav ngang trên desktop, hiện nút hamburger */
      .nav-links,.nav-right .btn-ghost,.lang-pill{ display:none; }
      .hamburger{ display:inline-flex; }
      /* MENU MOBILE: bật khi header có class .nav-open (JS toggle hamburger) */
      header.nav-open .nav-links {
        display:flex; flex-direction:column; align-items:stretch; gap:2px; margin:0;
        position:absolute; left:0; right:0; top:100%;
        background:var(--bg); border-top:1px solid var(--border-neutral);
        box-shadow:0 20px 40px rgba(11,48,59,.14); padding:12px var(--sx) 20px; max-height:80vh; overflow-y:auto; z-index:90;
      }
      header.nav-open .nav-links > a { padding:12px 6px; border-bottom:1px solid var(--border-neutral); font-size:16px; }
      header.nav-open .nav-mobile-only { display:block; }
      header.nav-open .nav-mobile-only.btn { text-align:center; margin-top:12px; border-bottom:none; }
      /* Mega-menu hiển thị phẳng (accordion mở sẵn) trong menu mobile */
      header.nav-open .has-mega { display:block; }
      header.nav-open .mega { position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; padding:0; }
      header.nav-open .mega-inner { border:none; padding:6px 0; display:block; box-shadow:none; background:transparent; }
      header.nav-open .mega-col { margin-bottom:6px; }
      header.nav-open .mega-col a, header.nav-open .mega-soon { padding:9px 8px; }
      .showcase,.ribbon-wrap{ grid-template-columns:1fr; gap:30px; }
      .int-groups,.tig-grid,.ig-grid,.reviews-grid{ grid-template-columns:1fr 1fr; }
      .foot-grid{ grid-template-columns:1fr 1fr; }
      .stats{ grid-template-columns:1fr 1fr; gap:26px; }
      .ribbons{ height:320px; }
    }
    @media (max-width:600px){
      .int-groups,.tig-grid,.ig-grid,.reviews-grid,.foot-grid,.int-cards{ grid-template-columns:1fr; }
      section.block{ padding:60px 0; } .hero{ padding-top:52px; }
      .tool-card{ padding:18px; } .stats{ grid-template-columns:1fr 1fr; }
    }

    /* ==================== MEGA-MENU ==================== */
    .has-mega { position:static; display:flex; align-items:center; }
    .mega-trigger { display:inline-flex; align-items:center; gap:5px; font:inherit; font-size:15px; font-weight:600;
      color:var(--ink); opacity:.9; cursor:pointer; }
    .mega-trigger:hover { color:var(--primary); opacity:1; }
    .mega-trigger svg { transition:transform .2s; }
    .has-mega:hover .mega-trigger svg { transform:rotate(180deg); }
    .mega { position:absolute; left:0; right:0; top:100%; opacity:0; visibility:hidden; transform:translateY(8px);
      transition:opacity .18s ease, transform .18s ease, visibility .18s; z-index:70; padding-top:12px; }
    .has-mega:hover .mega { opacity:1; visibility:visible; transform:translateY(0); }
    .mega-inner { max-width:var(--maxw); margin:0 auto; background:var(--bg); border:1px solid var(--border-neutral);
      border-radius:20px; box-shadow:var(--shadow-lg); padding:26px 30px; display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
    .mega-col-title { font-size:11px; text-transform:uppercase; letter-spacing:.12em; color:var(--muted); margin-bottom:10px; font-weight:800; }
    .mega-col a, .mega-soon { display:flex; align-items:center; justify-content:flex-start; gap:7px; padding:9px 10px;
      margin:0 -10px; border-radius:10px; font-size:14.5px; font-weight:600; color:var(--ink); transition:.14s; }
    .mega-col a:hover { background:var(--soft); color:var(--primary); }
    .mega-soon { color:var(--muted); cursor:default; }
    .mega-soon em { font-style:normal; font-size:8px; font-weight:800; text-transform:uppercase; letter-spacing:.02em;
      color:var(--primary); background:var(--primary-soft); padding:1px 5px; border-radius:var(--pill); white-space:nowrap; }

    /* ==================== MARKETING SUB-PAGES ==================== */
    .page-hero { position:relative; text-align:center; padding:64px 0 34px; overflow:hidden; }
    .page-hero::before { content:""; position:absolute; inset:-45% -10% auto -10%; height:520px; z-index:-1;
      background:radial-gradient(46% 62% at 30% 0%, rgba(16,115,230,.14), transparent 70%),
        radial-gradient(40% 55% at 85% 6%, rgba(245,180,80,.10), transparent 70%),
        linear-gradient(180deg,var(--soft),var(--bg)); }
    .page-hero h1 { font-size:clamp(32px,5vw,50px); line-height:1.07; letter-spacing:-.03em; }
    .page-hero .sub { max-width:640px; margin:16px auto 0; font-size:clamp(16px,2vw,19px); color:var(--ink-soft); font-weight:500; }
    .page-hero .hero-cta { margin-top:26px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
    .crumb { max-width:var(--maxw); margin:0 auto; font-size:13px; color:var(--muted); padding:14px var(--sx); }
    .crumb a { color:var(--muted); } .crumb a:hover { color:var(--primary); }

    /* ===== pricing (bám theo Maestra: tab gạch chân, thẻ có dải xanh nhạt, pill navy) ===== */
    /* top khối bảng giá: tabs → tiêu đề → toggle → thẻ */
    .pricing-sec { padding-top:60px; padding-bottom:96px; }
    .bill-row { text-align:center; margin-bottom:48px; }
    /* tabs gạch chân + thanh underline trượt */
    .ptabs { position:relative; display:flex; justify-content:center; gap:30px; border-bottom:1px solid var(--border-neutral); max-width:640px; margin:0 auto 32px; }
    .ptab { background:transparent; border:0; border-radius:0; height:auto; padding:12px 2px;
      font:inherit; font-size:16px; font-weight:700; color:var(--muted); cursor:pointer; transition:color .2s ease; }
    .ptab:hover { color:var(--ink); }
    .ptab.active { color:var(--ink); }
    .ptab-ink { position:absolute; bottom:-1px; left:0; width:0; height:2px; background:var(--primary); border-radius:2px;
      transition:left .32s cubic-bezier(.4,0,.2,1), width .32s cubic-bezier(.4,0,.2,1); pointer-events:none; }

    /* toggle năm/tháng */
    .bill-toggle { display:inline-flex; gap:4px; background:var(--soft); border:1px solid var(--border);
      border-radius:var(--pill); padding:4px; margin:0; }
    .bill-toggle button { border:0; background:transparent; height:38px; padding:0 18px; border-radius:var(--pill);
      font:inherit; font-weight:700; font-size:14px; color:var(--muted); cursor:pointer; }
    .bill-toggle button.active { background:var(--bg); color:var(--ink); box-shadow:var(--shadow); }
    .save-tag { color:var(--primary); font-weight:800; }

    .ptab-panel { display:none; }
    .ptab-panel.active { display:block; animation:ptabfade .34s cubic-bezier(.22,.61,.36,1) both; }
    @keyframes ptabfade { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
    .ptab-title { text-align:center; font-size:clamp(28px,4vw,40px); font-weight:800; margin:0 0 22px; letter-spacing:-.02em; }
    .ptab-title .hl { color:var(--primary); }

    .pricing-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:22px; max-width:100%; margin:0 auto; align-items:stretch; }
    .price-card { border:1px solid var(--border); border-radius:20px; background:var(--bg);
      display:flex; flex-direction:column; overflow:hidden; }
    .price-head { background:var(--soft); padding:26px 24px 24px; }
    html[data-theme="dark"] .price-head { background:#161d26; }
    .price-name { font-size:17px; font-weight:800; color:var(--primary); }
    .price-amount { margin:9px 0 3px; display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
    .price-amount .amt { font-size:29px; font-weight:800; color:var(--ink); letter-spacing:-.02em; line-height:1; }
    .save-annual { display:inline-block; font-size:10.5px; font-weight:800; color:#fff; background:var(--ink); padding:3px 8px; border-radius:var(--pill); }
    html[data-theme="dark"] .save-annual { background:var(--primary); }
    .price-sub { font-size:12.5px; color:var(--muted); }
    .price-body { padding:24px 24px 10px; flex:1; }
    .what-label { font-size:13px; color:var(--muted); margin-bottom:18px; }
    .price-list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:13px; }
    .price-list li { display:flex; align-items:flex-start; gap:9px; font-size:13.5px; color:var(--ink); line-height:1.3; }
    .price-list li::before { content:"•"; color:var(--primary); font-weight:800; font-size:16px; line-height:1.15; flex:none; }
    .price-list li.feat .feat-value { margin-left:auto; font-size:11px; font-weight:800; color:#fff; background:var(--ink);
      padding:3px 8px; border-radius:var(--pill); white-space:nowrap; }
    html[data-theme="dark"] .price-list li.feat .feat-value { background:var(--primary); }
    .price-list li.sep { height:4px; }
    .price-list li.sep::before { content:""; }
    .price-list li.orr { justify-content:center; color:var(--muted); font-size:12.5px; font-weight:600; }
    .price-list li.orr::before { content:""; }
    .price-list li.inc { font-weight:800; color:var(--primary); }
    .price-list li.inc::before { content:""; }
    .price-cta { padding:22px 24px 26px; }
    .price-cta .btn { height:44px; padding:0 18px; font-size:14px; font-weight:700; box-shadow:none; }
    .price-cta .btn.btn-primary { box-shadow:0 6px 16px rgba(16,115,230,.24); }
    .price-foot-note { max-width:760px; margin:32px auto 0; text-align:center; font-size:13.5px; color:var(--muted); }

    /* forms (contact / demo) */
    .form-wrap { display:grid; grid-template-columns:1.05fr .95fr; gap:44px; max-width:1040px; margin:0 auto; align-items:start; }
    .form-card { border:1px solid var(--border-neutral); border-radius:var(--r-lg); background:var(--bg); padding:30px; box-shadow:var(--shadow); }
    .field { margin-bottom:16px; }
    .field label { display:block; font-size:13px; font-weight:700; color:var(--ink); margin-bottom:6px; }
    .field input, .field textarea, .field select { width:100%; border:1px solid var(--border-neutral); border-radius:12px;
      padding:13px 14px; font:inherit; font-size:15px; color:var(--ink); background:var(--bg); transition:border-color .15s, box-shadow .15s; }
    .field input:focus, .field textarea:focus, .field select:focus { outline:0; border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-soft); }
    .field textarea { min-height:120px; resize:vertical; }
    .form-2col { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
    .form-note { font-size:12px; color:var(--muted); margin-top:6px; }
    .form-alert { background:rgba(239,73,45,.08); border:1px solid rgba(239,73,45,.3); color:var(--danger);
      font-size:14px; font-weight:600; padding:12px 14px; border-radius:12px; margin-bottom:16px; }
    .contact-line .ci-ic { color:var(--primary); display:inline-flex; flex:none; }
    .contact-line a { color:var(--primary); }
    .side-card { border:1px solid var(--border); border-radius:16px; background:var(--soft); padding:22px 24px; margin-bottom:16px; }
    .side-card h3 { font-size:18px; margin-bottom:12px; }
    .check-list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px; }
    .check-list li { display:flex; gap:10px; font-size:14.5px; color:var(--ink-soft); }
    .check-list li::before { content:"✓"; color:var(--primary); font-weight:800; flex:none; }
    .contact-line { display:flex; align-items:center; gap:10px; font-size:14.5px; color:var(--ink-soft); padding:6px 0; }
    .contact-line b { color:var(--ink); }

    /* trust strip (thay cho logo khách hàng) */
    .trust-strip { display:flex; flex-wrap:wrap; gap:12px 28px; justify-content:center; margin-top:36px; }
    .trust-strip span { display:inline-flex; align-items:center; gap:8px; font-size:14px; font-weight:600; color:var(--muted); }
    .trust-strip svg { color:var(--primary); }

    /* thanks */
    .thanks-box { max-width:560px; margin:0 auto; text-align:center; }
    .thanks-ico { width:72px; height:72px; margin:0 auto 22px; border-radius:50%; display:grid; place-items:center;
      background:var(--primary-soft); color:var(--primary); }

    /* ==== Doanh nghiệp: dark realtime + workflows ==== */
    .rt-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:34px; }
    .rt-item h3 { color:#fff; font-size:19px; font-weight:700; }
    .rt-item p { margin-top:10px; color:#aab6c2; font-size:14.5px; }
    .wf { display:flex; flex-direction:column; gap:66px; }
    .wf-row { display:grid; grid-template-columns:1.05fr 1fr; gap:56px; align-items:center; }
    .wf-row.rev .wf-text { order:2; }
    .wf-text h3 { font-size:clamp(22px,3vw,28px); font-weight:700; }
    .wf-text > p { margin-top:14px; color:var(--ink-soft); font-size:16px; }
    .wf-list { list-style:none; margin:18px 0 0; padding:0; display:flex; flex-direction:column; gap:12px; }
    .wf-list li { display:flex; gap:10px; font-size:14.5px; color:var(--ink-soft); }
    .wf-list li b { color:var(--ink); }
    .wf-list li::before { content:"✓"; color:var(--primary); font-weight:800; flex:none; }
    .wf-visual { border-radius:22px; aspect-ratio:16/11; border:1px solid var(--border-neutral); box-shadow:var(--shadow-lg);
      position:relative; overflow:hidden; background:radial-gradient(120% 100% at 20% 0%, #2f4b6e, #101a27 70%); }
    .wf-visual.alt { background:radial-gradient(120% 100% at 80% 0%, #1d5fb0, #0d2036 72%); }
    .wf-visual .wf-cap { position:absolute; left:18px; right:18px; bottom:18px; color:#dbe7f5; font-size:13.5px; font-weight:600; }
    @media (max-width:900px){
      .rt-grid{ grid-template-columns:1fr; gap:26px; }
      .wf-row{ grid-template-columns:1fr; gap:28px; }
      .wf-row.rev .wf-text{ order:0; }
    }
    /* Enterprise hero (nền chấm) + tech-split (tiêu đề trái / thẻ phải) */
    .ent-hero { position:relative; text-align:center; padding:92px 0 66px; overflow:hidden; }
    .ent-hero::before { content:""; position:absolute; inset:0; z-index:-1;
      background:
        radial-gradient(22% 34% at 12% 24%, rgba(34,160,107,.30), transparent 60%),
        radial-gradient(20% 30% at 84% 16%, rgba(245,180,80,.24), transparent 60%),
        radial-gradient(26% 36% at 72% 62%, rgba(16,115,230,.32), transparent 60%),
        radial-gradient(18% 28% at 28% 72%, rgba(139,92,246,.26), transparent 60%),
        radial-gradient(circle, rgba(255,255,255,.06) 1.1px, transparent 1.3px);
      background-size:100% 100%,100% 100%,100% 100%,100% 100%, 24px 24px;
      -webkit-mask-image:radial-gradient(92% 84% at 50% 32%, #000, transparent 82%);
      mask-image:radial-gradient(92% 84% at 50% 32%, #000, transparent 82%); }
    .ent-hero h1 { font-size:clamp(34px,5.4vw,58px); line-height:1.05; letter-spacing:-.03em; }
    .ent-hero h1 .x { color:var(--primary); }
    .ent-hero .sub { max-width:660px; margin:18px auto 0; font-size:clamp(16px,2vw,19px); color:var(--ink-soft); font-weight:500; }
    .ent-hero .hero-cta { margin-top:30px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
    .trust-chips { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-top:34px; }
    .trust-chips span { font-size:13px; font-weight:600; color:var(--muted); background:var(--bg); border:1px solid var(--border); padding:7px 14px; border-radius:var(--pill); }
    .tech-cards { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
    .tech-card { display:flex; flex-direction:column; align-items:flex-start; gap:14px; padding:24px 22px; border:1px solid var(--border-neutral);
      border-radius:16px; background:var(--bg); box-shadow:var(--shadow); transition:transform .16s ease, box-shadow .16s ease, border-color .16s ease; }
    .tech-card:hover { transform:translateY(-3px); border-color:var(--primary); box-shadow:0 14px 30px rgba(11,48,59,.10); }
    .tech-ic { width:48px; height:48px; flex:none; border-radius:13px; display:grid; place-items:center; color:#fff; }
    .tech-card h3 { font-size:17px; font-weight:700; }
    .tech-card p { margin-top:6px; color:var(--ink-soft); font-size:14px; }
    @media (max-width:860px){ .tech-cards{ grid-template-columns:1fr; } .ent-hero{ padding-top:62px; } }

    /* ==================== BLOG ==================== */
    .blog-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
    .blog-grid.blog-grid-3 { margin-top:16px; }
    .bcard { display:block; text-decoration:none; }
    .bcover { position:relative; aspect-ratio:16/9; border-radius:16px; overflow:hidden;
      background:linear-gradient(135deg,var(--cf,#1073e6),var(--ct,#0b5cc0)); transition:transform .16s ease, box-shadow .16s ease; }
    .bcard:hover .bcover { transform:translateY(-3px); box-shadow:0 16px 34px rgba(11,48,59,.16); }
    .bcover-lg { aspect-ratio:21/9; border-radius:20px; }
    .bcover-ic { position:absolute; right:-4px; bottom:-12px; color:#fff; opacity:.24; line-height:0; }
    .bcover-ic svg { width:120px; height:120px; }
    .bcover-lg .bcover-ic { right:10px; bottom:-8px; opacity:.28; }
    .bcover-lg .bcover-ic svg { width:150px; height:150px; }
    .bcover-cat { position:absolute; left:14px; top:14px; font-size:11px; font-weight:800; letter-spacing:.04em; text-transform:uppercase;
      color:#fff; background:rgba(255,255,255,.20); padding:4px 10px; border-radius:var(--pill); }
    .bcard h3 { font-size:18px; font-weight:700; color:var(--ink); margin-top:16px; line-height:1.3; }
    .bcard:hover h3 { color:var(--primary); }
    .bmeta { font-size:13px; color:var(--muted); margin-top:6px; }
    .bcard p { margin-top:9px; color:var(--ink-soft); font-size:14.5px; line-height:1.5; }

    .quick-answer { border:1px solid var(--border); background:var(--soft); border-left:4px solid var(--primary);
      border-radius:14px; padding:18px 20px; margin:26px 0; }
    .qa-label { font-size:11px; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--primary); margin-bottom:8px; }
    .quick-answer p { font-size:16.5px; color:var(--ink); font-weight:500; line-height:1.55; }
    .takeaways { border:1px solid var(--border-neutral); border-radius:14px; padding:18px 20px; margin:26px 0; background:var(--bg); }
    .takeaways ul { margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:9px; }
    .takeaways li { display:flex; gap:10px; font-size:15px; color:var(--ink-soft); }
    .takeaways li::before { content:"✓"; color:var(--primary); font-weight:800; flex:none; }
    .article-body { color:var(--ink-soft); font-size:16.5px; line-height:1.75; }
    .article-body p { margin:16px 0; }
    .article-body h2 { font-size:clamp(22px,3vw,28px); color:var(--ink); margin:38px 0 4px; line-height:1.25; }
    .article-body h3 { font-size:19px; color:var(--ink); margin:26px 0 2px; }
    .article-body ul, .article-body ol { margin:14px 0; padding-left:22px; }
    .article-body li { margin:8px 0; }
    .article-body a { color:var(--primary); text-decoration:underline; }
    .article-body strong { color:var(--ink); }
    .post-cta { text-align:center; border:1px solid var(--border); background:var(--soft); border-radius:20px; padding:34px 24px; margin:44px 0; }
    .post-cta h3 { font-size:22px; }
    .post-cta p { margin-top:10px; color:var(--ink-soft); }
    @media (max-width:900px){ .blog-grid{ grid-template-columns:1fr 1fr; } }
    @media (max-width:600px){ .blog-grid{ grid-template-columns:1fr; } }

    /* ---- Ảnh thật cho card blog ---- */
    .bcover-wrap { position:relative; aspect-ratio:16/9; border-radius:16px; overflow:hidden; }
    .bcover-photo { width:100%; height:100%; object-fit:cover; display:block; transition:transform .3s ease; }
    /* An toàn: nếu ảnh không nằm trong .bcover-wrap thì vẫn có khung tỉ lệ, không sập chiều cao */
    .bcard > .bcover-photo { aspect-ratio:16/9; height:auto; border-radius:16px; }
    .bcard:hover .bcover-photo { transform:scale(1.04); }
    .bcover-cat-float { background:rgba(11,48,59,.62); backdrop-filter:blur(4px); }

    /* ================= BÀI BLOG (article) ================= */
    .post-wrap { max-width:1100px; padding-top:28px; padding-bottom:80px; }
    .post-hero { display:grid; grid-template-columns:1.05fr .95fr; gap:38px; align-items:center; margin:6px 0 36px; }
    .post-hero-text .label { margin-bottom:12px; }
    .post-hero-text h1 { font-size:clamp(28px,3.6vw,40px); line-height:1.14; color:var(--ink); margin-top:6px; }
    .post-lede { margin-top:14px; font-size:17px; line-height:1.6; color:var(--ink-soft); }
    .post-byline { display:flex; align-items:center; gap:12px; margin-top:20px; }
    .pb-avatar { width:40px; height:40px; border-radius:50%; background:var(--soft); color:var(--primary);
      display:grid; place-items:center; flex:none; }
    .pb-name { display:block; font-weight:700; color:var(--ink); font-size:14.5px; }
    .pb-meta { display:block; font-size:13px; color:var(--muted); margin-top:1px; }
    .post-hero-media .bcover-lg { aspect-ratio:16/10; margin:0; }
    .post-hero-img { width:100%; aspect-ratio:16/10; object-fit:cover; border-radius:20px; display:block;
      box-shadow:0 20px 44px rgba(11,48,59,.16); }

    .post-layout { display:grid; grid-template-columns:250px 1fr; gap:48px; align-items:start; }
    .post-side { position:sticky; top:96px; display:flex; flex-direction:column; gap:20px; }
    .toc { border:1px solid var(--border-neutral); border-radius:14px; padding:18px 18px 14px; background:var(--bg); }
    .toc-title { font-size:11px; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-bottom:12px; }
    .toc ol { margin:0; padding:0; list-style:none; counter-reset:toc; display:flex; flex-direction:column; gap:2px; }
    .toc li { counter-increment:toc; }
    .toc a { display:block; padding:7px 0 7px 26px; position:relative; font-size:13.5px; line-height:1.4;
      color:var(--ink-soft); text-decoration:none; border-left:2px solid transparent; }
    .toc a::before { content:counter(toc); position:absolute; left:0; top:7px; width:18px; height:18px; border-radius:50%;
      background:var(--soft); color:var(--primary); font-size:10px; font-weight:800; display:grid; place-items:center; }
    .toc a:hover { color:var(--primary); }
    .side-cta { border:1px solid var(--border); background:var(--soft); border-radius:16px; padding:20px 18px; }
    .sc-eyebrow { font-size:11px; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--primary); }
    .side-cta p { margin:8px 0 14px; font-size:14px; line-height:1.5; color:var(--ink); }
    .side-cta .btn { width:100%; justify-content:center; }
    .sc-link { display:block; text-align:center; margin-top:10px; font-size:13.5px; font-weight:600; color:var(--primary); text-decoration:none; }
    .sc-link:hover { text-decoration:underline; }
    .post-main { min-width:0; }
    .post-main > .quick-answer:first-child { margin-top:0; }
    .post-main h2, .post-main .quick-answer { scroll-margin-top:96px; }

    .post-share { display:flex; align-items:center; gap:10px; margin:38px 0 4px; padding-top:22px; border-top:1px solid var(--border-neutral); }
    .post-share span { font-size:13px; font-weight:700; color:var(--muted); margin-right:2px; }
    .post-share a { width:38px; height:38px; border-radius:50%; border:1px solid var(--border-neutral); color:var(--ink-soft);
      display:grid; place-items:center; transition:all .18s ease; }
    .post-share a:hover { background:var(--primary); border-color:var(--primary); color:#fff; }

    .author-box { display:flex; gap:16px; align-items:flex-start; margin:30px 0; padding:22px; border:1px solid var(--border-neutral); border-radius:18px; background:var(--bg); }
    .ab-avatar { width:52px; height:52px; border-radius:14px; background:var(--soft); color:var(--ink);
      display:grid; place-items:center; flex:none; }
    .ab-name { font-weight:800; color:var(--ink); font-size:15.5px; }
    .ab-body p { margin:6px 0 8px; font-size:14.5px; line-height:1.6; color:var(--ink-soft); }
    .ab-body a { font-size:14px; font-weight:600; color:var(--primary); text-decoration:none; }
    .ab-body a:hover { text-decoration:underline; }
    .post-related { margin-top:44px; padding-top:8px; }
    .post-related h2 { font-size:clamp(20px,2.6vw,26px); color:var(--ink); margin-bottom:20px; }

    @media (max-width:960px){
      .post-hero { grid-template-columns:1fr; gap:22px; }
      .post-hero-media { order:-1; }
      .post-layout { grid-template-columns:1fr; gap:0; }
      .post-side { position:static; flex-direction:column; margin-bottom:26px; }
      .toc { display:none; }
    }

    @media (max-width:1280px){ .pricing-grid{ grid-template-columns:repeat(3,1fr); max-width:780px; } }
    @media (max-width:960px){
      .mega-inner{ grid-template-columns:1fr 1fr; }
      .pricing-grid{ grid-template-columns:repeat(2,1fr); max-width:540px; }
      .form-wrap{ grid-template-columns:1fr; gap:28px; }
    }
    @media (max-width:600px){
      .mega-inner{ grid-template-columns:1fr; }
      .form-2col{ grid-template-columns:1fr; }
      .pricing-grid{ grid-template-columns:1fr; max-width:360px; }
    }