/* Giao diện các trang công khai toiuuseo.com: nền tím than, điểm nhấn tím, nút bo tròn, thẻ kính mờ. */
:root{
  --night:#04011c;--night2:#0d0a2b;--night3:#1a1640;
  --violet:#a680f1;--indigo:#8980f1;--violet-ink:#6d4fd8;
  --paper:#ffffff;--mist:#f4f2fe;--ink:#17132e;--ink2:#3c3858;--muted:#6c6886;--line:#e6e2f6;
  --on-night:#ece9ff;--on-night-muted:#a9a3cc;--night-line:rgba(255,255,255,.1);
  --ok:#14a38b;--warn:#e89a3c;--err:#e5484d;
  --radius:18px;--pill:56px;
  --head:'Space Grotesk',system-ui,sans-serif;--body:'Be Vietnam Pro',system-ui,sans-serif;
  /* tên cũ để các trang blog vẫn dùng được */
  --bg:var(--mist);--card:var(--paper);--brand:var(--violet-ink);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink2);font:16px/1.7 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--head);color:var(--ink);font-weight:500;letter-spacing:-.02em;line-height:1.2;margin:0 0 .5em}
a{color:var(--violet-ink)}
img{max-width:100%}
code{background:var(--mist);padding:1px 6px;border-radius:6px;font-size:.92em}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.grad{background:linear-gradient(90deg,var(--violet),var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}
.hl{display:inline-block;padding:0 .18em;border-radius:12px;background:linear-gradient(135deg,rgba(166,128,241,.45),rgba(137,128,241,.25));border:1px solid rgba(166,128,241,.7)}

/* ---------- nút & nhãn ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:var(--pill);border:1px solid transparent;
  background:linear-gradient(90deg,var(--violet),var(--indigo));color:#fff;font:500 15px/1.4 var(--head);text-decoration:none;cursor:pointer;transition:.2s}
.btn:hover{background:#fff;color:var(--night);border-color:var(--violet)}
.btn .arr{width:18px;height:18px;flex:none}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--violet)}
.btn.ghost:hover{background:var(--violet);color:#fff}
.night .btn.ghost,.hero .btn.ghost{color:#fff;background:rgba(166,128,241,.08);box-shadow:inset 0 0 18px rgba(166,128,241,.35)}
.btn.sm{padding:9px 18px;font-size:14px}
.tag{display:inline-block;padding:5px 14px;border-radius:10px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:500 13px/1.4 var(--head);margin-bottom:18px}
.night .tag,.hero .tag{background:rgba(166,128,241,.18);border-color:rgba(166,128,241,.7);color:#fff;box-shadow:inset 0 0 14px rgba(166,128,241,.4)}

/* ---------- đầu trang ---------- */
.topbar{position:absolute;top:14px;left:0;right:0;z-index:20}
.topbar .bar{max-width:1240px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:10px 12px 10px 22px;border-radius:16px;background:#fff;box-shadow:0 10px 40px rgba(20,10,60,.08)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 19px/1 var(--head);color:var(--night);letter-spacing:-.01em;white-space:nowrap}
.logo i{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--violet),var(--indigo));display:grid;place-items:center;color:#fff;font:700 15px var(--head);font-style:normal}
.logo b{color:var(--violet-ink);font-weight:700}
.menu{display:flex;gap:4px;margin:0 auto}
.menu a{padding:7px 14px;border-radius:30px;color:var(--ink);text-decoration:none;font:500 14px/1.4 var(--head);text-transform:uppercase;letter-spacing:.02em}
.menu a:hover{color:var(--violet-ink)}
.menu a.on{border:1px solid var(--line);color:var(--violet-ink)}
.acts{display:flex;gap:8px;align-items:center}
.acts .login{color:var(--ink);text-decoration:none;font:500 14px var(--head);padding:8px 12px}
.burger{display:none;margin-left:auto}
.burger summary{list-style:none;cursor:pointer;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center}
.burger summary::-webkit-details-marker{display:none}
.burger .sheet{position:absolute;left:12px;right:12px;top:66px;background:#fff;border-radius:16px;padding:12px;box-shadow:0 20px 50px rgba(20,10,60,.18);display:grid;gap:2px}
.burger .sheet a{padding:11px 14px;border-radius:10px;color:var(--ink);text-decoration:none;font:500 15px var(--head)}
.burger .sheet a:hover{background:var(--mist)}
.home .topbar .bar{background:rgba(13,10,43,.55);box-shadow:none;border:1px solid var(--night-line);backdrop-filter:blur(14px)}
.home .logo,.home .menu a,.home .acts .login{color:#fff}
.home .menu a.on{border-color:var(--night-line);color:#fff}
.home .burger summary{border-color:var(--night-line);color:#fff}
@media (max-width:980px){.menu,.acts .login,.acts .btn.ghost{display:none}.burger{display:block}.topbar .bar{gap:10px}}
@media (max-width:520px){.acts{display:none}.topbar{top:8px}.topbar .bar{margin:0 8px}}

/* ---------- băng tiêu đề trang con ---------- */
.page-hero{position:relative;overflow:hidden;padding:150px 20px 70px;text-align:center;color:#fff;
  background:radial-gradient(120% 140% at 0% 100%,#d9cffc 0,rgba(217,207,252,0) 32%),linear-gradient(100deg,#9c88f3 0%,#8a7cef 38%,#4c3a9e 78%,#2a1f63 100%)}
.page-hero::before,.page-hero::after{content:"";position:absolute;border:1px solid rgba(255,255,255,.28);border-radius:50%;pointer-events:none}
.page-hero::before{width:520px;height:520px;left:-260px;top:40px}
.page-hero::after{width:640px;height:640px;right:-300px;top:-380px}
.page-hero.slim{padding:96px 0 0}
.page-hero h1{color:#fff;font-size:clamp(32px,5vw,46px);margin:0 0 10px}
.crumbs{font:500 13px/1.4 var(--head);text-transform:uppercase;letter-spacing:.04em;color:rgba(255,255,255,.75)}
.crumbs a{color:rgba(255,255,255,.75);text-decoration:none} .crumbs a:hover{color:#fff}
.crumbs span{margin:0 8px}

/* ---------- khối nội dung ---------- */
.sec{padding:96px 0}
.sec.tight{padding:64px 0}
.sec.mist{background:var(--mist)}
.night{background:var(--night);color:var(--on-night-muted)}
.night h1,.night h2,.night h3{color:#fff}
.title{font-size:clamp(30px,4.2vw,48px);max-width:820px}
.title .soft{color:var(--indigo)}
.night .title .soft{color:#c8b8ff}
.center{text-align:center}.center .title{margin-left:auto;margin-right:auto}
.lead{font-size:18px;max-width:640px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.head-row .title{margin:0}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:28px}.sec{padding:72px 0}}

/* ---------- trang chủ: hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--night);color:var(--on-night-muted);padding:170px 0 90px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 80% 10%,rgba(137,128,241,.28),transparent 70%),radial-gradient(45% 45% at 0% 100%,rgba(166,128,241,.18),transparent 70%);pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(#000,transparent 85%);pointer-events:none}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
.hero h1{color:#fff;font-size:clamp(38px,5.6vw,66px);line-height:1.08;margin-bottom:22px}
.hero p.lead{color:var(--on-night-muted);margin:0 0 30px}
.hero .ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero .ask{margin-top:22px;color:#fff;font-size:15px}
.hero .ask a{color:#fff}
@media (max-width:980px){.hero .wrap{grid-template-columns:1fr}.hero{padding-top:130px}}

/* bảng điều khiển minh hoạ (dựng bằng HTML) */
.mock{border-radius:20px;background:linear-gradient(180deg,#1b1745,#100c30);border:1px solid var(--night-line);box-shadow:0 40px 90px rgba(0,0,0,.5),0 0 0 8px rgba(255,255,255,.03);padding:18px;color:#d8d3f6;font-size:13px}
.mock .mt{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.mock .dot{width:10px;height:10px;border-radius:50%;background:#3a3470}
.mock .url{margin-left:10px;flex:1;background:#221d55;border-radius:8px;padding:5px 12px;color:#a9a3cc;font-size:12px}
.mock .kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:12px}
.mock .kpi{background:#221d55;border-radius:12px;padding:10px 12px}
.mock .kpi span{display:block;color:#a9a3cc;font-size:11px}
.mock .kpi b{font:600 20px var(--head);color:#fff}
.mock .panel{background:#221d55;border-radius:12px;padding:12px 14px;margin-top:10px}
.mock .row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:7px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.mock .row:last-child{border:0}
.mock .bar2{height:8px;border-radius:5px;background:#2e2868;overflow:hidden;display:flex;gap:2px;margin:8px 0 4px}
.mock .bar2 i{display:block}
.mock .pill{padding:2px 9px;border-radius:20px;font-size:11px;white-space:nowrap}
.pill.ok{background:rgba(20,163,139,.2);color:#5ce0c6}.pill.wait{background:rgba(232,154,60,.18);color:#ffc27a}.pill.v{background:rgba(166,128,241,.25);color:#d6c6ff}
.mock .btnx{display:inline-block;padding:4px 12px;border-radius:20px;background:linear-gradient(90deg,var(--violet),var(--indigo));color:#fff;font-size:11px}
@media (max-width:560px){.mock .kpis{grid-template-columns:repeat(2,1fr)}}

/* ---------- thẻ tính năng ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feat{grid-column:span 6;border-radius:22px;border:1px solid var(--night-line);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.01));padding:28px;overflow:hidden}
.feat.w7{grid-column:span 7}.feat.w5{grid-column:span 5}
.feat .art{border-radius:16px;background:#1d1947;padding:18px;margin-bottom:26px;min-height:200px}
.feat h3{font-size:24px;margin-bottom:8px}
.feat p{margin:0}
@media (max-width:860px){.feat,.feat.w7,.feat.w5{grid-column:span 12}}
.art .li{display:flex;align-items:center;gap:10px;background:#2a2560;border-radius:10px;padding:9px 12px;margin-bottom:8px;color:#e6e1ff;font-size:13px}
.art .li.on{background:linear-gradient(90deg,var(--violet),var(--indigo));color:#fff}
.art .li small{margin-left:auto;color:#b4acdf}
.art .li.on small{color:#fff}
.art .ico{width:26px;height:26px;border-radius:8px;background:rgba(255,255,255,.12);display:grid;place-items:center;flex:none}
.art .meter{display:flex;justify-content:space-between;color:#cfc8f2;font-size:13px;margin-top:10px}
.art .track{height:6px;border-radius:4px;background:#2e2868;margin-top:6px;overflow:hidden}
.art .track i{display:block;height:100%;background:linear-gradient(90deg,var(--violet),var(--indigo))}
.art .diff{font:13px/1.6 ui-monospace,Menlo,monospace;background:#151236;border-radius:10px;padding:12px 14px;color:#cfc8f2}
.art .diff s{color:#ff9aa0}.art .diff b{color:#7ff0d6;font-weight:500}

/* ---------- vòng nền tảng kết nối ---------- */
.orbit-sec{position:relative;overflow:hidden;background:radial-gradient(60% 60% at 50% 75%,rgba(137,128,241,.45),transparent 70%),var(--night);padding:100px 0}
.orbit{position:relative;width:min(560px,92vw);aspect-ratio:1;margin:50px auto 30px}
.orbit .ring{position:absolute;border:1px solid rgba(255,255,255,.14);border-radius:50%}
.orbit .core{position:absolute;inset:27%;border-radius:50%;background:radial-gradient(circle at 50% 30%,#6c5ad8,#2a1f74 60%,#150f45);box-shadow:0 0 90px rgba(137,128,241,.6),inset 0 0 40px rgba(255,255,255,.12);display:grid;place-items:center;color:#fff;font:600 20px var(--head);text-align:center}
.orbit .chip{position:absolute;transform:translate(-50%,-50%);background:#fff;color:var(--night);border-radius:30px;padding:8px 14px;font:600 13px var(--head);white-space:nowrap;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.orbit .chip.v{background:linear-gradient(90deg,var(--violet),var(--indigo));color:#fff}
@media (max-width:560px){.orbit .chip{font-size:11px;padding:6px 10px}}

/* ---------- số liệu ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;text-align:center}
.stats b{display:block;font:400 clamp(48px,6vw,76px)/1 var(--head);letter-spacing:-.04em;background:linear-gradient(180deg,#c9b8ff,var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{display:block;margin-top:12px;color:#fff;font:500 15px/1.5 var(--head);max-width:240px;margin-left:auto;margin-right:auto}
.light .stats span{color:var(--ink)}

/* ---------- lưới lợi ích ---------- */
.ben{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ben>div{border:1px solid var(--night-line);border-radius:16px;padding:26px;background:rgba(255,255,255,.03)}
.ben .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:rgba(166,128,241,.18);border:1px solid rgba(166,128,241,.5);color:#d6c6ff;margin-bottom:22px}
.ben h3{font-size:19px;margin-bottom:6px}
.ben p{margin:0;font-size:15px}
.light .ben>div{border-color:var(--line);background:#fff}
.light .ben .ic{color:var(--violet-ink);background:var(--mist)}
@media (max-width:860px){.ben{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.ben{grid-template-columns:1fr}}

/* ---------- các bước ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:20px;counter-reset:s}
.step{background:var(--mist);border-radius:18px;padding:30px 24px;text-align:center}
.step em{display:inline-block;font:500 13px var(--head);font-style:normal;color:#fff;background:linear-gradient(90deg,var(--violet),var(--indigo));border-radius:20px;padding:4px 14px;margin-bottom:16px}
.step h3{font-size:19px;margin-bottom:6px}
.step p{margin:0;font-size:15px}
.sec.mist .step{background:#fff}

/* ---------- danh sách tính năng dạng hàng ---------- */
.rows{display:grid;gap:16px}
.rowc{display:grid;grid-template-columns:auto 1fr 1.2fr auto;align-items:center;gap:22px;background:#fff;border-radius:16px;padding:22px 26px;box-shadow:0 10px 30px rgba(60,40,140,.06)}
.rowc .ic{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--violet),var(--indigo));color:#fff;display:grid;place-items:center}
.rowc h3{margin:0;font-size:19px}
.rowc p{margin:0;font-size:15px;color:var(--muted)}
.rowc .go{width:42px;height:30px;border-radius:20px;border:1px solid var(--violet);display:grid;place-items:center;color:var(--violet-ink)}
@media (max-width:760px){.rowc{grid-template-columns:auto 1fr}.rowc p{grid-column:1/-1}.rowc .go{display:none}}

/* ---------- hỏi đáp ---------- */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.faq .col{border-radius:18px;padding:10px;background:#fff;box-shadow:0 10px 40px rgba(60,40,140,.08)}
.faq details{border-radius:12px;background:#fff;box-shadow:0 2px 10px rgba(60,40,140,.06);margin:8px}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;padding:16px 18px;font:500 16px/1.45 var(--head);color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--violet-ink);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 18px 18px;font-size:15px}
@media (max-width:860px){.faq{grid-template-columns:1fr}}

/* ---------- bảng giá ---------- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.plan{border:1px solid var(--line);border-radius:18px;padding:12px;background:#fff}
.plan .top{padding:16px 16px 20px}
.plan h3{font-size:21px;margin-bottom:6px}
.plan .price{display:flex;justify-content:space-between;align-items:flex-end;margin-top:20px}
.plan .price small{font:500 12px var(--head);text-transform:uppercase;color:var(--ink)}
.plan .price b{font:400 34px/1 var(--head);color:var(--violet-ink);letter-spacing:-.02em}
.plan ul{list-style:none;margin:0;padding:22px 18px;background:var(--mist);border-radius:14px}
.plan li{position:relative;padding-left:28px;margin:0 0 10px;font-size:15px;color:var(--ink)}
.plan li::before{content:"✓";position:absolute;left:0;top:2px;width:18px;height:18px;border-radius:50%;background:var(--night);color:#fff;font-size:11px;display:grid;place-items:center}
.plan .btn{width:100%;justify-content:center;margin-top:18px}
.plan.hot{border-color:var(--violet);box-shadow:0 20px 50px rgba(137,128,241,.2)}

/* ---------- giới thiệu ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 -18px;position:relative;z-index:1;padding:0 12px}
.chips span{padding:8px 18px;border-radius:30px;color:#fff;font:500 13px var(--head);background:#7cc7ef}
.chips span:nth-child(3n+2){background:var(--indigo)}.chips span:nth-child(3n){background:var(--violet)}
.visual{border-radius:22px;overflow:hidden;background:radial-gradient(80% 100% at 80% 0%,#6c5ad8,transparent 60%),linear-gradient(135deg,#140f3d,#2b2170);padding:clamp(22px,4vw,48px);color:#e6e1ff}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line);margin:34px 0 26px}
.tabs label{padding:14px 10px;text-align:center;cursor:pointer;font:500 15px var(--head);color:var(--ink);border-bottom:3px solid transparent}
.tabpanes>div{display:none}
#t1:checked~.tabs label[for=t1],#t2:checked~.tabs label[for=t2],#t3:checked~.tabs label[for=t3]{border-color:var(--indigo);color:var(--violet-ink)}
#t1:checked~.tabpanes .p1,#t2:checked~.tabpanes .p2,#t3:checked~.tabpanes .p3{display:grid}
.tabbox{background:#fff;border-radius:20px;padding:clamp(22px,4vw,44px);grid-template-columns:1fr 1fr;gap:36px;align-items:center;box-shadow:0 20px 60px rgba(60,40,140,.08)}
@media (max-width:760px){.tabbox{grid-template-columns:1fr!important}.tabs label{font-size:13px}}
.marquee{overflow:hidden;white-space:nowrap;padding:36px 0}
.marquee div{display:inline-block;font:500 clamp(40px,7vw,96px)/1.1 var(--head);letter-spacing:-.04em;animation:mq 40s linear infinite}
.marquee div span{background:linear-gradient(90deg,#d8ccff,var(--indigo),#d8ccff);-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:60px}
@keyframes mq{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marquee div{animation:none}}

/* ---------- blog ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:280px;border-radius:16px;padding:22px;color:#fff;text-decoration:none;overflow:hidden;
  background:radial-gradient(90% 80% at 100% 0%,rgba(166,128,241,.75),transparent 60%),linear-gradient(160deg,#2b2170,#0d0a2b)}
.pcard:nth-child(3n+2){background:radial-gradient(90% 80% at 0% 0%,rgba(124,199,239,.55),transparent 60%),linear-gradient(160deg,#241d62,#0b0826)}
.pcard:nth-child(3n){background:radial-gradient(90% 90% at 50% 0%,rgba(137,128,241,.7),transparent 65%),linear-gradient(160deg,#1c1650,#07051a)}
.pcard .tg{position:absolute;top:18px;left:18px;font:600 11px var(--head);text-transform:uppercase;letter-spacing:.04em;background:var(--indigo);border-radius:6px;padding:4px 10px}
.pcard small{opacity:.8;font-size:13px}
.pcard h2{color:#fff;font-size:22px;margin:6px 0 6px;line-height:1.25}
.pcard p{margin:0;font-size:14px;opacity:.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard:hover h2{text-decoration:underline;text-underline-offset:4px}
@media (max-width:900px){.posts{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.posts{grid-template-columns:1fr}}

/* ---------- bài viết, chính sách ---------- */
.doc{max-width:860px;margin:0 auto}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,4vw,40px);margin:0 0 22px}
.card h1{font-size:clamp(28px,4vw,40px)}
.card h2{font-size:24px;margin:30px 0 10px}
.card h3{font-size:19px;margin:22px 0 8px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.grid .card{margin:0}
ul{padding-left:22px} li{margin:4px 0}

/* ---------- 404 ---------- */
.e404{text-align:center;padding:90px 0 110px}
.e404 .big{font:500 clamp(140px,26vw,300px)/.9 var(--head);letter-spacing:-.06em;background:linear-gradient(90deg,#efeafe,#b3a3f6 45%,var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}
.e404 h2{font-size:clamp(28px,4vw,40px);margin:10px auto 12px;max-width:560px}
.e404 form{display:flex;max-width:440px;margin:24px auto;border-bottom:1px solid var(--line)}
.e404 input{flex:1;border:0;padding:12px 4px;font:15px var(--body);background:transparent;outline:none}

/* ---------- CTA & chân trang ---------- */
.cta{position:relative;overflow:hidden;border-radius:26px;padding:clamp(34px,6vw,70px);text-align:center;color:var(--on-night-muted);
  background:radial-gradient(70% 90% at 50% 120%,rgba(166,128,241,.65),transparent 70%),var(--night2)}
.cta h2{color:#fff;font-size:clamp(28px,4vw,44px);max-width:720px;margin:0 auto 14px}
.cta p{max-width:560px;margin:0 auto 26px}
.foot{position:relative;background:radial-gradient(50% 70% at 40% 0%,rgba(137,128,241,.4),transparent 70%),var(--night);color:var(--on-night-muted);padding:80px 0 30px;margin-top:0}
.foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.foot .logo{color:#fff}
.foot .tagline{font:500 22px/1.35 var(--head);color:#fff;margin:22px 0 18px;max-width:340px}
.foot h4{color:#fff;font-size:16px;margin:4px 0 16px}
.foot a{display:block;color:var(--on-night-muted);text-decoration:none;font-size:15px;margin:0 0 10px}
.foot a:hover{color:#fff}
.foot .mail{display:inline-block;border:1px solid var(--night-line);border-radius:30px;padding:6px 14px;color:#fff;font-size:14px}
.foot .base{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--night-line);margin-top:50px;padding-top:24px;font-size:14px}
@media (max-width:860px){.foot .cols{grid-template-columns:1fr 1fr}.foot .cols>div:first-child{grid-column:1/-1}}
.totop{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none;
  background:linear-gradient(135deg,var(--violet),var(--indigo));box-shadow:0 10px 24px rgba(137,128,241,.45);z-index:30}
.foot a.logo{display:flex;color:#fff;font-size:19px;margin:0}
.foot a.mail{display:inline-block;color:#fff}
.hero .wrap>*,.split>*,.feat-grid>*,.faq>*,.plans>*,.ben>*,.steps>*{min-width:0}
.art .diff{overflow-x:auto;white-space:nowrap}
.art .li{min-width:0}.art .li small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mock .row{flex-wrap:wrap}
@media (max-width:560px){.hero h1{font-size:36px}.hero .ctas .btn{width:100%;justify-content:center}.feat{padding:18px}.art{padding:12px!important}}
.topbar .bar{position:relative}
.burger .sheet{left:0;right:0;top:calc(100% + 8px)}
@media (max-width:560px){.orbit{width:74vw}}
.cta .muted,.cta .small{color:var(--on-night-muted)}

/* người đã đăng nhập trên trang công khai */
.who{position:relative}
.who summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:8px;padding:5px 12px 5px 5px;border-radius:30px;border:1px solid var(--line);font:500 14px var(--head);color:var(--ink);max-width:220px}
.who summary::-webkit-details-marker{display:none}
.who summary i{width:30px;height:30px;border-radius:50%;flex:none;display:grid;place-items:center;font-style:normal;color:#fff;background:linear-gradient(135deg,var(--violet),var(--indigo))}
.who summary span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.who .sheet{position:absolute;right:0;top:calc(100% + 10px);min-width:230px;background:#fff;border-radius:14px;padding:8px;box-shadow:0 20px 50px rgba(20,10,60,.18);display:grid;gap:2px;z-index:40}
.who .sheet a,.who .sheet button{display:block;text-align:left;width:100%;padding:10px 12px;border-radius:10px;border:0;background:none;color:var(--ink);text-decoration:none;font:500 14px var(--head);cursor:pointer}
.who .sheet a:hover,.who .sheet button:hover{background:var(--mist)}
.who-mail{padding:8px 12px 10px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis}
.burger .who-mail{border:0;margin:0}
.home .who summary{color:#fff;border-color:var(--night-line)}
@media (max-width:980px){.acts .who{display:none}}