/* ==========================================================================
   Tìm Khách Lead — NEON CHARCOAL SaaS
   Dùng chung cho index.html · dieu-khoan.html · chinh-sach-du-lieu.html
   Không framework, không webfont ngoài (font hệ thống → tải tức thì).
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root{
  /* nền */
  --bg-primary:#111416;
  --bg-secondary:#161B1E;
  --footer:#0C0F10;
  /* bề mặt */
  --surface-1:#1C2225;
  --surface-2:#22292C;
  --surface-3:#272F32;
  /* viền */
  --border:#384247;
  --border-strong:#46525A;
  --border-soft:rgba(255,255,255,.07);
  /* thương hiệu — NEON */
  --brand:#89F800;
  --brand-hover:#9CFF24;
  --brand-active:#74D900;
  --brand-ink:#101410;               /* chữ trên nền neon */
  --brand-tint:rgba(137,248,0,.12);
  --brand-tint-2:rgba(137,248,0,.06);
  --brand-line:rgba(137,248,0,.45);
  /* chữ */
  --text:#F2F5F3;
  --text-2:#A2ADA9;
  --muted:#73807C;
  /* cảnh báo (amber, KHÔNG phải cam-CTA) */
  --warn:#E0B341;
  --warn-tint:rgba(224,179,65,.10);
  --warn-line:rgba(224,179,65,.40);
  /* hình khối */
  --radius:12px;
  --radius-sm:9px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.3),0 2px 10px rgba(0,0,0,.28);
  --shadow-md:0 8px 24px rgba(0,0,0,.4),0 2px 8px rgba(0,0,0,.3);
  --shadow-lg:0 24px 60px rgba(0,0,0,.5),0 8px 20px rgba(0,0,0,.4);
  --glow:0 0 20px rgba(137,248,0,.12);
  --glow-strong:0 0 28px rgba(137,248,0,.26);
  --wrap:1200px;
  --gap-section:88px;
  /* mono stack */
  --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Code","Roboto Mono",Menlo,Consolas,monospace;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  font-size:16px;line-height:1.7;color:var(--text-2);background:var(--bg-primary);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hover)}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;font-weight:800;letter-spacing:-.015em;color:var(--text)}
h1{font-size:clamp(31px,5.6vw,52px);letter-spacing:-.025em}
h2{font-size:clamp(25px,4vw,38px)}
h3{font-size:clamp(19px,2.3vw,23px);font-weight:700}
h4{font-size:17px;font-weight:700;margin-bottom:.35em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin-bottom:.4em}
strong{font-weight:700;color:var(--text)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
::selection{background:rgba(137,248,0,.25);color:#fff}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
section{padding:var(--gap-section) 0;position:relative}
section[id]{scroll-margin-top:80px}
.alt{background:var(--bg-secondary)}
.center{text-align:center}
.lede{font-size:clamp(16px,1.9vw,19px);color:var(--text-2);max-width:62ch;margin:0 auto 2.5em}
.center .lede{margin-inline:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--brand);font-family:var(--mono);
  background:var(--surface-1);border:1px solid var(--border);padding:7px 14px;border-radius:999px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

/* ---------- 4. Nút ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font:inherit;font-weight:700;font-size:15.5px;line-height:1.2;
  padding:14px 24px;border-radius:var(--radius-sm);border:1px solid transparent;
  cursor:pointer;text-align:center;letter-spacing:.01em;
  transition:transform .14s ease,box-shadow .14s ease,background .14s ease,border-color .14s ease,color .14s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
/* PRIMARY — neon */
.btn-primary,.btn-dl,.btn-brand{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);box-shadow:var(--glow)}
.btn-primary:hover,.btn-dl:hover,.btn-brand:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:var(--brand-ink);box-shadow:var(--glow-strong)}
.btn-primary:active,.btn-dl:active,.btn-brand:active{background:var(--brand-active);border-color:var(--brand-active)}
/* SECONDARY — dark bordered */
.btn-secondary{background:var(--surface-1);border-color:var(--border);color:var(--text)}
.btn-secondary:hover{border-color:var(--brand-line);color:var(--text);box-shadow:var(--glow)}
/* GHOST */
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.btn-ghost:hover{color:var(--text);background:var(--surface-1)}
/* trên nền tối nổi bật (CTA cuối) */
.btn-onDark{background:transparent;border-color:var(--border-strong);color:var(--text)}
.btn-onDark:hover{background:var(--surface-1);border-color:var(--brand-line)}
.btn-lg{font-size:16.5px;padding:17px 30px}
.btn-sm{font-size:14px;padding:10px 18px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 14px}
.center .btn-row{justify-content:center}

/* ---------- 5. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(17,20,22,.82);
  backdrop-filter:saturate(140%) blur(14px);-webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--border-soft);
}
.site-header .wrap{display:flex;align-items:center;gap:16px;min-height:66px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo:hover{text-decoration:none}
.logo-n{width:34px;height:34px;flex-shrink:0;border-radius:9px;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:17px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.logo-text small{font-size:9.5px;font-weight:700;letter-spacing:.14em;color:var(--muted);font-family:var(--mono);text-transform:uppercase}
.nav{margin-left:auto;display:flex;align-items:center;gap:8px}
.nav a:not(.btn){color:var(--text-2);font-weight:600;font-size:14.5px;padding:8px 12px;border-radius:7px}
.nav a:not(.btn):hover{color:var(--text);background:var(--surface-1)}
.nav .btn{margin-left:8px}
.nav-toggle{display:none;margin-left:auto;background:var(--surface-1);border:1px solid var(--border);border-radius:9px;padding:10px 11px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span+span{margin-top:5px}

/* ---------- 6. Hero ---------- */
.hero{position:relative;padding:68px 0 80px;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-10%;right:-5%;width:70%;height:90%;z-index:0;pointer-events:none;
  background:radial-gradient(45% 50% at 70% 40%,rgba(137,248,0,.07),transparent 70%);
}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,45%) minmax(0,55%);gap:48px;align-items:center}
.hero h1{margin-bottom:18px}
.hero h1 .hl{color:var(--brand)}
.hero .sub{font-size:clamp(16px,1.9vw,18.5px);color:var(--text-2);margin-bottom:24px;max-width:56ch}
.ticks{list-style:none;padding:0;margin:0 0 8px}
.ticks li{display:flex;gap:11px;align-items:flex-start;margin-bottom:12px;font-size:15.5px;color:var(--text-2)}
.ticks .ic{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;background:var(--brand-tint);
  color:var(--brand);display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:1px;
  border:1px solid var(--brand-line);
}
.ticks .ic::before{content:"✓"}
.trust-line{
  display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);
  background:var(--surface-1);border:1px solid var(--border);border-left:3px solid var(--brand);
  padding:12px 14px;border-radius:var(--radius-sm);margin:18px 0 12px;max-width:60ch;
}
.proof{font-size:13.5px;color:var(--muted);margin:0;max-width:60ch}
.proof strong{color:var(--text-2)}

/* hero product showcase */
.hero-art{position:relative}
.window{
  background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-lg);position:relative;
}
.window::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;box-shadow:inset 0 0 0 1px var(--border-soft)}
.win-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.win-dot{width:10px;height:10px;border-radius:50%;background:var(--border-strong)}
.win-title{margin-left:10px;font-family:var(--mono);font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.win-live{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10.5px;color:var(--brand);letter-spacing:.06em}
.win-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand);animation:pulse 2s ease-in-out infinite}
.float-card{
  position:absolute;background:var(--surface-2);border:1px solid var(--border);
  border-radius:var(--radius-sm);box-shadow:var(--shadow-md);padding:11px 14px;font-size:12.5px;
  font-family:var(--mono);line-height:1.5;color:var(--text-2);
}
.float-card.fc1{right:-16px;top:16%}
.float-card.fc2{left:-16px;bottom:-18px}
.float-card b{color:var(--brand);font-weight:700}
.float-card .mono{color:var(--text);font-size:15px}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* khối SVG mock (feature) */
.shot{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface-1);box-shadow:var(--shadow-md)}

/* ---------- 7. Card chung ---------- */
.card{
  background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);padding:24px;
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-md)}
.card .ic-lg{
  width:44px;height:44px;border-radius:11px;background:var(--surface-3);color:var(--brand);
  display:grid;place-items:center;font-size:21px;margin-bottom:15px;border:1px solid var(--border);
}
.card h4{color:var(--text)}
.card p{margin:0;color:var(--text-2);font-size:15px}
.banner{
  margin-top:36px;background:var(--surface-1);border:1px solid var(--border);border-left:3px solid var(--brand);
  border-radius:var(--radius);padding:20px 24px;text-align:center;font-size:clamp(15.5px,2vw,18px);
  font-weight:600;color:var(--text);
}
.note{
  background:var(--surface-1);border:1px solid var(--border);border-left:4px solid var(--brand);
  border-radius:var(--radius);padding:24px 26px;margin-top:34px;
}
.note h3{color:var(--text);margin-bottom:12px}
.note ul{margin:0;padding-left:1.15em}
.note li{color:var(--text-2);font-size:15px}
.note li::marker{color:var(--brand)}
.note-warn{border-left-color:var(--warn);background:linear-gradient(0deg,var(--warn-tint),var(--warn-tint)),var(--surface-1)}
.note-warn h3{color:var(--warn)}

/* ---------- 8. Bảng ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-1)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top;color:var(--text-2)}
thead th{background:var(--surface-2);font-weight:700;font-size:13px;letter-spacing:.03em;color:var(--text);white-space:nowrap;text-transform:uppercase;font-family:var(--mono)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(255,255,255,.015)}
td.no{color:var(--muted)}
td strong{color:var(--text)}
.cmp td:last-child,.cmp th:last-child{background:var(--brand-tint-2)}
.cmp td:last-child{color:var(--text)}
.cmp td:first-child{font-weight:700;color:var(--text);white-space:nowrap}

/* ---------- 9. Flow (giải pháp) ---------- */
.flow{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin:0 0 38px}
.flow-box{
  background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);padding:16px 22px;
  font-weight:700;font-size:15px;text-align:center;color:var(--text);
}
.flow-box small{font-weight:500;color:var(--muted)}
.flow-box.mid{border-color:var(--brand-line);background:var(--surface-2);box-shadow:var(--glow)}
.flow-box.mid small{color:var(--brand)}
.flow-arrow{color:var(--brand);font-weight:800;font-size:20px;display:flex;align-items:center;gap:4px;font-family:var(--mono)}

/* ---------- 10. Tính năng ---------- */
.feat{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:60px}
.feat:last-child{margin-bottom:0}
.feat.rev .feat-txt{order:2}
.feat h3{display:flex;align-items:center;gap:12px;color:var(--text)}
.feat h3 .ic{
  width:40px;height:40px;border-radius:11px;background:var(--surface-3);color:var(--brand);
  display:grid;place-items:center;font-size:19px;flex-shrink:0;border:1px solid var(--border);
}
.feat ul{padding-left:0;list-style:none;margin:0}
.feat li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);margin-bottom:9px}
.feat li::before{content:"✓";color:var(--brand);font-weight:800;flex-shrink:0}

/* ---------- 11. Số liệu ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.stat{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;text-align:center}
.stat b{display:block;font-size:clamp(26px,4vw,38px);font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-.02em;font-family:var(--mono)}
.stat span{font-size:14px;color:var(--text-2)}
.kicker{text-align:center;margin-top:32px;font-size:clamp(17px,2.1vw,20px);font-weight:700;color:var(--text)}

/* ---------- 12. Quy trình (operation workflow) ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{
  position:relative;background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 18px 20px;transition:border-color .16s ease,transform .16s ease;
}
.step:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.step .idx{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;display:block;margin-bottom:6px}
.step .op{font-family:var(--mono);font-size:10.5px;font-weight:700;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;display:block;margin-bottom:10px}
.step h4{margin:0 0 6px;font-size:16px;color:var(--text)}
.step p{margin:0;font-size:14px;color:var(--text-2)}

/* ---------- 13. Product demo ---------- */
.demo-wrap{max-width:980px;margin:0 auto}
.demo-shell{position:relative;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-1);box-shadow:var(--shadow-lg)}
.demo-shell::before{content:"";position:absolute;inset:-1px;z-index:-1;border-radius:var(--radius-lg);background:radial-gradient(60% 60% at 50% 0,rgba(137,248,0,.12),transparent 70%)}
.annots{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 14px;margin-top:26px}
.annot{display:inline-flex;align-items:center;gap:9px;background:var(--surface-1);border:1px solid var(--border);border-radius:999px;padding:8px 15px;font-size:13.5px;color:var(--text-2)}
.annot b{font-family:var(--mono);font-size:12px;color:var(--brand);font-weight:700}

/* ---------- 14. Bảng giá ---------- */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:880px;margin:0 auto;align-items:start}
.plan{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px 28px;position:relative;transition:border-color .16s ease,transform .16s ease}
.plan:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.plan.best{border-color:var(--brand-line);box-shadow:var(--glow)}
.plan .badge{
  position:absolute;top:-13px;right:22px;background:var(--brand);color:var(--brand-ink);
  font-size:11px;font-weight:800;letter-spacing:.08em;padding:5px 13px;border-radius:999px;
  text-transform:uppercase;font-family:var(--mono);box-shadow:var(--glow)
}
.plan .pname{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-family:var(--mono)}
.plan .price{font-size:clamp(28px,4vw,40px);font-weight:800;color:var(--text);line-height:1.1;letter-spacing:-.02em;font-family:var(--mono)}
.plan .price small{font-size:15px;font-weight:600;color:var(--muted);letter-spacing:0;font-family:inherit}
.plan .who{font-size:13.5px;color:var(--muted);font-style:italic;margin:14px 0 18px;padding-bottom:18px;border-bottom:1px solid var(--border)}
.plan ul{list-style:none;padding:0;margin:0 0 24px}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;margin-bottom:10px;color:var(--text-2)}
.plan li::before{content:"✓";color:var(--brand);font-weight:800;flex-shrink:0}
.plan .btn{width:100%}
.perks{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 28px;margin:30px 0 16px;font-size:14px;color:var(--text-2)}
.perks span{display:flex;gap:8px;align-items:center}
.keywarn{text-align:center;font-size:13.5px;color:var(--text-2);max-width:62ch;margin:0 auto}
.keywarn strong{color:var(--text)}
.pay{display:flex;justify-content:center;align-items:center;gap:14px;flex-wrap:wrap;margin-top:28px;font-size:13px;color:var(--muted)}
.pay b{background:var(--surface-1);border:1px solid var(--border);border-radius:7px;padding:6px 13px;font-weight:600;color:var(--text-2);font-family:var(--mono)}

/* ---------- 15. FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 320px;gap:34px;align-items:start}
details.qa{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
details.qa[open]{border-color:var(--border-strong)}
details.qa summary{cursor:pointer;list-style:none;padding:17px 52px 17px 20px;font-weight:700;font-size:16px;position:relative;color:var(--text)}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--brand);line-height:1}
details.qa[open] summary::after{content:"−"}
details.qa summary:hover{color:var(--brand)}
.qa-body{padding:16px 20px 18px;color:var(--text-2);font-size:15px;border-top:1px solid var(--border);margin:0 20px 18px}
.qa-body p:last-child{margin-bottom:0}
.help-box{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;position:sticky;top:88px}
.help-box .av{width:54px;height:54px;border-radius:12px;background:var(--surface-3);color:var(--brand);display:grid;place-items:center;font-size:24px;margin:0 auto 12px;border:1px solid var(--border)}
.help-box h4{color:var(--text)}
.help-box p{font-size:14px;color:var(--text-2)}

/* ---------- 16. CTA cuối ---------- */
.cta-final{position:relative;background:var(--bg-secondary);text-align:center;overflow:hidden;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.cta-final::before{content:"";position:absolute;inset:0;z-index:0;background:radial-gradient(50% 70% at 50% 100%,rgba(137,248,0,.08),transparent 70%)}
.cta-final .wrap{position:relative;z-index:1}
.cta-final h2{color:var(--text);max-width:20ch;margin-inline:auto}
.cta-final .lede{color:var(--text-2);margin-bottom:8px}
.reassure{list-style:none;padding:0;margin:26px 0 18px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px 26px;font-size:14px;color:var(--text-2)}
.reassure li{display:flex;gap:8px;align-items:center}

/* ---------- 17. Footer ---------- */
.site-footer{background:var(--footer);color:var(--text-2);font-size:14px;padding:58px 0 26px;border-top:1px solid var(--border-soft)}
.site-footer h4{color:var(--text);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px;font-family:var(--mono)}
.site-footer a{color:var(--text-2)}
.site-footer a:hover{color:var(--brand)}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.f-grid ul{list-style:none;padding:0;margin:0}
.f-grid li{margin-bottom:9px}
.f-brand{display:flex;align-items:center;gap:11px;margin-bottom:12px}
.f-brand img{width:34px;height:34px;border-radius:9px}
.f-brand b{color:var(--text);font-weight:800;font-size:16px}
.f-tag{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--brand);text-transform:uppercase;margin:0 0 10px}
.f-scope{margin-top:40px;padding:18px 22px;background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;line-height:1.65;color:var(--muted)}
.f-scope strong{color:var(--text-2)}
.copy{margin-top:22px;padding-top:20px;border-top:1px solid var(--border-soft);font-size:12.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.copy a{color:var(--muted)}

/* ---------- 18. Sticky CTA mobile ---------- */
.sticky-cta{display:none}

/* ---------- 19. Trang pháp lý ---------- */
.legal-hero{background:var(--bg-secondary);padding:48px 0 40px;border-bottom:1px solid var(--border-soft)}
.legal-hero h1{font-size:clamp(26px,4.2vw,40px);margin-bottom:12px;color:var(--text)}
.meta{font-size:14px;color:var(--muted);margin:0}
.meta b{color:var(--text-2)}
.legal{padding:48px 0 76px}
.legal-wrap{max-width:820px;margin:0 auto;padding:0 20px}
.legal-wrap h2{font-size:clamp(20px,2.6vw,26px);margin:44px 0 14px;padding-top:24px;border-top:1px solid var(--border);color:var(--text)}
.legal-wrap h2:first-of-type{margin-top:0;padding-top:0;border-top:0}
.legal-wrap h3{font-size:18px;margin:28px 0 10px;color:var(--text)}
.legal-wrap p,.legal-wrap li{font-size:15.5px;color:var(--text-2)}
.legal-wrap .table-wrap{margin:18px 0 24px}
.legal-wrap table{min-width:420px;font-size:14.5px}
.tldr{background:var(--surface-1);border:1px solid var(--border);border-left:4px solid var(--brand);border-radius:var(--radius);padding:22px 26px;margin:0 0 40px}
.tldr h2{border:0;padding:0;margin:0 0 12px;font-size:18px;color:var(--brand)}
.tldr ol{margin:0;padding-left:1.3em}
.tldr li{font-size:15px;color:var(--text-2)}
.tldr li::marker{color:var(--brand)}
.tldr .intro{font-size:15px;color:var(--muted);margin-bottom:14px}
.toc{background:var(--surface-1);border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;margin:0 0 40px}
.toc h2{border:0;padding:0;margin:0 0 12px;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-family:var(--mono)}
.toc ol{columns:2;column-gap:32px;margin:0;padding-left:1.3em;font-size:15px}
.toc li{margin-bottom:7px;break-inside:avoid}
.legal-wrap .ph{color:var(--brand);font-weight:600}
.back{display:inline-flex;gap:7px;align-items:center;font-weight:600;font-size:15px;margin-bottom:24px;color:var(--brand)}

/* ---------- 20. Responsive ---------- */
@media (max-width:1024px){
  :root{--gap-section:68px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero::before{width:100%;height:50%}
  .feat{gap:32px;margin-bottom:48px}
  .steps{grid-template-columns:repeat(2,1fr);gap:24px 16px}
  .faq-grid{grid-template-columns:1fr}
  .help-box{position:static;max-width:480px;margin:0 auto}
  .f-grid{grid-template-columns:1fr 1fr;gap:30px}
  .float-card.fc1{right:4px;top:10%}
  .float-card.fc2{left:4px;bottom:-14px}
}
@media (max-width:767px){
  :root{--gap-section:56px}
  body{padding-bottom:74px}
  .wrap{padding:0 16px}
  .nav{
    display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-secondary);border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);padding:8px 16px 18px;
  }
  .nav.open{display:flex}
  .nav a:not(.btn){padding:14px 6px;border-bottom:1px solid var(--border);font-size:16px;border-radius:0}
  .nav .btn{margin:14px 0 0;width:100%}
  .nav-toggle{display:block}
  .hero{padding:40px 0 52px}
  .g3,.g2,.feat,.plans,.stats{grid-template-columns:1fr}
  .hero-art{margin-top:8px}
  .float-card{position:static;display:inline-flex;margin:12px 8px 0 0}
  .feat.rev .feat-txt{order:0}
  .flow{flex-direction:column;gap:10px}
  .flow-arrow{transform:rotate(90deg)}
  .flow-box{width:100%}
  .steps{grid-template-columns:1fr;gap:14px}
  section[id]{scroll-margin-top:70px}
  .legal-wrap .toc ol{columns:1}
  .copy{justify-content:flex-start}
  .annots{gap:8px}
  .sticky-cta{
    display:block;position:fixed;bottom:0;left:0;right:0;z-index:70;
    background:rgba(17,20,22,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-top:1px solid var(--border);padding:10px 16px;
  }
  .sticky-cta .btn{width:100%}
}
@media (max-width:420px){
  .btn{width:100%}
  .btn-row{flex-direction:column;gap:10px}
  .perks{flex-direction:column;gap:10px;align-items:center}
  .logo-text small{display:none}
}

/* ---------- 21. Motion & print ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}
@media print{
  .site-header,.sticky-cta,.nav{display:none}
  body{background:#fff;color:#000;padding-bottom:0}
  .legal-wrap{max-width:none}
}