/* =====================================================================
   Trang pháp lý / thông tin của kiwipdf.org (privacy, term, refund, pricing) — đợt 2026-11-02.
   Cùng ngôn ngữ thiết kế với trang chủ site/index.html (Đợt 18): nền SÁNG kiểu Apple, nav nổi viên thuốc, nút đen bo tròn,
   tiêu đề 2 dòng (dòng 2 xám), thẻ xám bo lớn, chữ viết tay Dancing Script ở viên thương hiệu, brand ĐỎ.
   Token + nav + nút + footer CHÉP từ index.html — đổi một bên phải đổi bên kia.
   ===================================================================== */
:root{
  --bg:#ffffff; --gray:#f5f5f7; --gray2:#ebebf0;
  --text:#1d1d1f; --text2:#424245; --muted:#6e6e73; --faint:#86868b;
  --line:rgba(0,0,0,.08); --line2:rgba(0,0,0,.14);
  --ink:#111211; --ink2:#2b2c2b;
  --red:#EF5350; --red-deep:#D32F2F;
  --grad:linear-gradient(100deg,#F4511E 0%,#E53935 45%,#C2185B 100%);
  --green:#10B981;
  --r-xl:32px; --r-lg:26px; --r:20px; --r-sm:14px;
  --sh-sm:0 1px 2px rgba(0,0,0,.04),0 6px 18px rgba(0,0,0,.05);
  --sh:0 2px 6px rgba(0,0,0,.04),0 22px 60px rgba(0,0,0,.09);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-script:"Dancing Script","Segoe Script","Bradley Hand",cursive;
  --wrap:1120px; --gutter:24px;
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
[id]{scroll-margin-top:96px}
h1,h2,h3{text-wrap:balance}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.55;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:clip;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(239,83,80,.55);outline-offset:3px;border-radius:10px}
::selection{background:rgba(239,83,80,.22)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.soft{color:var(--faint)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.script{font-family:var(--font-script);font-weight:700;letter-spacing:0}

/* ---------- nút (y trang chủ) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;padding:0 28px;border-radius:999px;
  font-size:17px;font-weight:500;letter-spacing:-.01em;white-space:nowrap;transition:transform .2s var(--ease),background .2s,box-shadow .2s}
.btn:active{transform:scale(.97)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--ink2)}
.btn-line{background:#fff;color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.btn-line:hover{background:var(--gray)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}

/* máy tính / cảm ứng — cùng quy tắc trang chủ (không theo bề rộng) */
.only-touch{display:none!important}
@media (hover:none) and (pointer:coarse){
  .only-desktop{display:none!important}
  .only-touch{display:inline-flex!important}
}

/* ---------- NAV nổi ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:60;display:flex;justify-content:center;padding:12px 16px;pointer-events:none}
.nav-inner{pointer-events:auto;width:100%;max-width:1200px;height:56px;display:flex;align-items:center;gap:16px;padding:0 10px 0 14px;
  border-radius:999px;border:1px solid transparent;transition:max-width .45s var(--ease),background .3s,border-color .3s,box-shadow .3s}
.nav.scrolled .nav-inner{max-width:1120px;background:rgba(255,255,255,.78);-webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);border-color:var(--line);box-shadow:var(--sh-sm)}
.logo{display:flex;align-items:center;gap:10px;font-weight:650;font-size:18px;letter-spacing:-.02em;flex:none}
.logo img{width:30px;height:30px;border-radius:8px;box-shadow:0 2px 6px rgba(211,47,47,.25)}
.nav-links{display:flex;gap:4px;margin:0 auto;list-style:none}
.nav-links a{display:block;white-space:nowrap;padding:8px 12px;border-radius:999px;font-size:14.5px;color:var(--text2);transition:background .2s,color .2s}
.nav-links a:hover{background:rgba(0,0,0,.05);color:var(--text)}
.nav-links a[aria-current="page"]{background:rgba(0,0,0,.06);color:var(--text);font-weight:550}
.nav-right{display:flex;align-items:center;gap:6px;margin-left:auto}
@media (max-width:1180px){ .nav-links{gap:0} .nav-links a{padding:8px 9px;font-size:14px} }
@media (max-width:900px){ .nav-links{display:none} }

/* Mở từ app iOS/Android (?from=ios|android): không có lối vào trang mua trên web (Apple 3.1.1/3.1.3, Google Play) */
.from-app li:has(> a[href$="#/premium"]){display:none}
.from-app li:has(> a[href="/pricing"]){display:none}
.from-app .web-buy{display:none!important}

/* ---------- HERO trang ---------- */
.page-hero{padding:clamp(120px,16vh,150px) 0 56px;text-align:center}
.brand-pill{display:inline-flex;align-items:center;gap:9px;padding:5px 16px 5px 6px;border-radius:999px;background:var(--ink);color:#fff;
  box-shadow:0 10px 30px rgba(0,0,0,.18);margin-bottom:22px;transition:transform .3s var(--ease)}
.brand-pill:hover{transform:translateY(-2px) rotate(-1deg)}
.brand-pill img{width:28px;height:28px;border-radius:8px}
.brand-pill .script{font-size:23px;line-height:1;padding-top:2px}
.kicker{font-size:15px;font-weight:600;color:var(--red-deep);margin-bottom:12px;letter-spacing:.01em}
.page-hero h1{font-size:clamp(38px,5.4vw,66px);line-height:1.06;font-weight:700;letter-spacing:-.035em}
.page-hero .lede{font-size:clamp(16px,1.4vw,19px);color:var(--muted);margin-top:18px}

/* ---------- bố cục tài liệu ---------- */
.content-wrap{max-width:var(--wrap);margin:0 auto;padding:8px var(--gutter) 120px;display:grid;grid-template-columns:248px minmax(0,1fr);gap:64px;align-items:start}
.toc{position:sticky;top:96px;background:var(--gray);border-radius:var(--r);padding:20px 12px 14px}
.toc h3{font-size:13px;font-weight:600;color:var(--text);margin:0 12px 10px}
.toc ul{list-style:none;display:flex;flex-direction:column;gap:2px}
.toc a{display:block;font-size:14px;color:var(--muted);padding:7px 12px;border-radius:12px;transition:background .2s,color .2s}
.toc a:hover{color:var(--text);background:var(--gray2)}
.toc a.active{color:#fff;background:var(--ink)}

.doc-body{min-width:0;max-width:760px}
.highlight-box{background:var(--gray);border-radius:var(--r-lg);padding:28px 30px;margin-bottom:56px}
.highlight-box strong{display:block;font-size:21px;font-weight:650;letter-spacing:-.02em;margin-bottom:8px;color:var(--text)}
.highlight-box strong span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.highlight-box p{font-size:16px;color:var(--text2);line-height:1.6}

.doc-section{margin-bottom:56px}
.doc-section h2{font-size:clamp(24px,2.4vw,30px);font-weight:700;letter-spacing:-.025em;line-height:1.15;margin-bottom:18px}
.doc-section h3{font-size:18px;font-weight:650;letter-spacing:-.015em;color:var(--text);margin:28px 0 10px}
.doc-section p{font-size:16.5px;color:var(--text2);line-height:1.7;margin-bottom:14px}
.doc-section strong{color:var(--text);font-weight:600}
.doc-section a{color:var(--red-deep);text-decoration:underline;text-decoration-color:rgba(211,47,47,.35);text-underline-offset:3px}
.doc-section a:hover{text-decoration-color:currentColor}
.doc-section ul{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.doc-section ul li{position:relative;padding-left:22px;font-size:16.5px;color:var(--text2);line-height:1.65}
.doc-section ul li::before{content:"";position:absolute;left:4px;top:.68em;width:6px;height:6px;border-radius:50%;background:var(--red)}

/* thẻ tóm tắt (privacy) / được-không được (term) */
.data-grid,.rules-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:6px 0 20px}
.data-card,.rule-card{background:var(--gray);border-radius:var(--r);padding:20px 22px;transition:background .2s}
.data-card:hover,.rule-card:hover{background:var(--gray2)}
.data-card h4,.rule-card h4{font-size:16px;font-weight:650;letter-spacing:-.01em;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.data-card p,.rule-card p{font-size:14.5px;color:var(--muted);line-height:1.55;margin:0}
.rule-card h4::before{flex:none;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;color:#fff}
.rule-card.allowed h4::before{content:"✓";background:var(--green)}
.rule-card.disallowed h4::before{content:"✕";background:var(--red-deep)}

.warning-box{background:#fff8e6;border-radius:var(--r-sm);padding:18px 20px;margin:18px 0}
.warning-box p{font-size:15.5px;color:#7a5200;line-height:1.6;margin:0}
.warning-box strong{color:#5c3d00}

/* hộp liên hệ cuối trang — kiểu khối "kết" của trang chủ */
.contact-box{background:var(--gray);border-radius:var(--r-xl);padding:48px 32px;text-align:center;margin-top:24px}
.contact-box h3{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.025em;margin-bottom:10px}
.contact-box p{font-size:17px;color:var(--muted);margin-bottom:24px}
.contact-box a{display:inline-flex;align-items:center;height:52px;padding:0 28px;border-radius:999px;background:var(--ink);color:#fff;font-weight:500;transition:background .2s,transform .2s var(--ease)}
.contact-box a:hover{background:var(--ink2)}
.contact-box a:active{transform:scale(.97)}

/* ---------- Bảng giá: thẻ gói + bảng so sánh ---------- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:6px 0 24px}
.plan{background:var(--gray);border-radius:var(--r-lg);padding:28px 24px 24px;display:flex;flex-direction:column;gap:10px;position:relative}
.plan.best{background:#fff;box-shadow:inset 0 0 0 2px var(--red),var(--sh)}
.plan .tag{position:absolute;top:-12px;left:24px;background:var(--ink);color:#fff;font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px}
.plan h3{font-size:17px;font-weight:650;margin:0}
.plan .price{white-space:nowrap;font-size:clamp(32px,3vw,38px);font-weight:700;letter-spacing:-.035em;line-height:1.1}
.plan .price small{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:0}
.doc-section .plan p{font-size:14.5px;color:var(--muted);line-height:1.55;margin:0}
.doc-section .plan .cta{margin-top:auto;display:flex;align-items:center;justify-content:center;height:46px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:15px;font-weight:500;text-decoration:none;transition:background .2s}
.doc-section .plan .cta:hover{background:var(--ink2)}
.doc-section .plan .cta.ghost{background:#fff;color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.doc-section .plan .cta.ghost:hover{background:var(--gray2)}
.cmp{width:100%;border-collapse:collapse;font-size:15.5px;margin-bottom:14px}
.cmp th,.cmp td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;color:var(--text2)}
.cmp th{color:var(--text);font-weight:600;font-size:14px}
.cmp td.c,.cmp th.c{text-align:center;width:110px}
.cmp .y{color:var(--green);font-weight:700}
.cmp .n{color:var(--faint)}

/* ---------- footer (y trang chủ) ---------- */
footer{background:var(--gray);padding:72px 0 36px;font-size:14.5px}
.fgrid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}
.fbrand p{color:var(--muted);margin:16px 0 20px;max-width:330px}
.fcol h3{font-size:13px;font-weight:600;color:var(--text);margin-bottom:14px}
.fcol ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.fcol a{color:var(--muted)}
.fcol a:hover{color:var(--text)}
.fbottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:56px;padding-top:24px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
@media (max-width:860px){ .fgrid{grid-template-columns:1fr 1fr} .fbrand{grid-column:1/-1} }

@media (max-width:900px){
  .content-wrap{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
}
@media (max-width:640px){
  :root{--gutter:16px}
  .page-hero{padding:112px 0 40px}
  .nav-inner{padding:0 8px 0 10px;gap:8px}
  .data-grid,.rules-grid{grid-template-columns:1fr}
  .highlight-box{padding:22px}
  .contact-box{padding:36px 20px}
  .cmp td.c,.cmp th.c{width:72px}
  .cmp th,.cmp td{padding:12px 6px}
}
@media (max-width:360px){ .nav .logo span{display:none} }
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;scroll-behavior:auto!important}
}