/* Tendi site — khung chung cho mọi trang con (giá, bảo mật, pháp lý…). Cùng màu/phông/thanh đầu/chân với index.html (CSS của index nằm trong chính trang đó). */
html,body{margin:0;padding:0} img{max-width:100%} [hidden]{display:none!important}
:root{
  --ink:#0b1420;--ink-2:#111c2b;--fg:#1a2634;--muted:#5b6b7b;--faint:#8696a6;
  --bg:#ffffff;--bg-2:#f6f9f8;--line:#e4eaec;--line-2:#1e2d3d;
  --accent:#0f7a4b;--accent-deep:#0a5e39;--accent-soft:#e8f3ee;--accent-bright:#2ecb82;
  --maxw:1180px;--sans:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;
  --shadow:0 1px 2px rgba(11,20,32,.04),0 12px 32px rgba(11,20,32,.07);
}
html[lang="zh"] body{font-family:"Noto Sans SC","Manrope",system-ui,sans-serif}
html[lang="ja"] body{font-family:"Noto Sans JP","Manrope",system-ui,sans-serif}
body{margin:0;font-family:var(--sans);color:var(--fg);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.12;letter-spacing:-.02em;text-wrap:balance;color:var(--ink)}
p{margin:0}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
.eyebrow{font-family:var(--mono);font-weight:600;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:inherit;font-weight:600;font-size:.95rem;min-height:46px;padding:0 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:transform .06s,background .15s,border-color .15s,color .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--accent-deep)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{min-height:52px;padding:0 28px;font-size:1.02rem}
.hero-band{background:var(--ink);color:#dce6ee;position:relative;overflow:hidden}
.hero-band::before{content:"";position:absolute;top:-220px;right:-140px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(46,203,130,.16),transparent 62%);pointer-events:none}
.nav{position:relative;z-index:3;display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.26rem;letter-spacing:-.02em;color:#fff}
.brand .mk{width:32px;height:32px;border-radius:9px;background:linear-gradient(150deg,var(--accent-bright),var(--accent-deep));display:grid;place-items:center;flex:none}
.nav-links{display:flex;gap:28px;margin-left:16px}
.nav-links a{color:#9fb1c0;font-weight:500;font-size:.94rem;transition:color .15s}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.lang-wrap{position:relative}
.lang{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.8rem;color:#9fb1c0;border:1px solid var(--line-2);border-radius:8px;min-height:40px;padding:0 12px;cursor:pointer;background:transparent}
.lang:hover{color:#fff;border-color:#33465a}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;background:#0f1a28;border:1px solid var(--line-2);border-radius:11px;padding:6px;min-width:168px;box-shadow:0 18px 40px rgba(0,0,0,.4);z-index:40}
.lang-menu button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;background:transparent;border:0;color:#cdd9e3;font-family:var(--sans);font-size:.92rem;font-weight:500;padding:10px 12px;border-radius:8px;cursor:pointer;text-align:left}
.lang-menu button:hover{background:#17283a;color:#fff}
.lang-menu button .tick{color:var(--accent-bright);opacity:0}
.lang-menu button[aria-current="true"] .tick{opacity:1}
.btn-nav-ghost{color:#cdd9e3;border-color:var(--line-2);background:transparent}
.btn-nav-ghost:hover{border-color:#33465a;color:#fff}
.menu-btn{display:none;margin-left:auto;background:transparent;border:1px solid var(--line-2);border-radius:9px;width:46px;height:46px;color:#dce6ee;cursor:pointer}
.mobile-menu{display:none;position:relative;z-index:3;border-top:1px solid var(--line-2);padding:12px 0 18px}
.mobile-menu a{display:block;color:#cdd9e3;padding:12px 0;border-bottom:1px solid var(--line-2);font-weight:500}
.mobile-menu .btn{display:inline-flex;padding:0 22px;border-bottom:1px solid transparent}
/* đầu trang con */
.phead{position:relative;z-index:2;padding-block:40px 60px;max-width:760px}
.phead h1{color:#fff;font-size:clamp(2rem,4.2vw,3rem);font-weight:800;margin-top:14px}
.phead .sub{margin-top:16px;color:#a9bac8;font-size:1.1rem;max-width:62ch}
.phead .meta{margin-top:18px;font-family:var(--mono);font-size:.78rem;color:#8fa2b2}
.phead .pill{margin-bottom:6px}
.pill{display:inline-flex;align-items:center;gap:8px;background:rgba(46,203,130,.12);border:1px solid rgba(46,203,130,.28);color:#8fe4b6;font-weight:600;font-size:.82rem;padding:6px 13px;border-radius:999px}
/* nội dung */
section{padding-block:68px}
.tint{background:var(--bg-2);border-block:1px solid var(--line)}
.shead{max-width:660px;margin:0 auto 42px;text-align:center}
.shead h2{font-size:clamp(1.7rem,3.2vw,2.3rem);font-weight:800;margin-top:12px}
.shead p{margin-top:14px;color:var(--muted);font-size:1.05rem}
.feats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feat{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:var(--shadow)}
.feat .ic{width:44px;height:44px;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:15px}
.feat .ic svg{width:22px;height:22px}
.feat h3{font-size:1.14rem}
.feat p{margin-top:9px;color:var(--muted);font-size:.96rem}
.feat .tag,.tag{display:inline-block;margin-top:12px;font-family:var(--mono);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}
.callout{border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));background:var(--accent-soft);border-radius:16px;padding:30px}
.callout h2,.callout h3{font-size:1.4rem;font-weight:800}
.callout > p{margin-top:10px;color:#35505f}
.ticks{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:11px}
.ticks li{display:flex;gap:10px;font-size:.98rem;color:var(--fg)}
.ticks li svg{width:18px;height:18px;color:var(--accent);flex:none;margin-top:3px}
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.price{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.price.feat-plan{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),var(--shadow)}
.price .pt{display:flex;align-items:center;justify-content:space-between}
.price .nm{font-weight:700;font-size:1.18rem;color:var(--ink)}
.price .bd{font-family:var(--mono);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}
.price .amt{font-size:2.15rem;font-weight:800;color:var(--ink);margin:16px 0 2px;letter-spacing:-.02em}
.price .amt small{font-size:.9rem;color:var(--muted);font-weight:500}
.price .desc{color:var(--muted);font-size:.9rem}
.price ul{list-style:none;padding:0;margin:20px 0 24px;display:grid;gap:11px}
.price li{display:flex;gap:9px;font-size:.93rem;color:var(--fg)}
.price li svg{width:17px;height:17px;color:var(--accent);flex:none;margin-top:3px}
.price .fine{margin:-8px 0 18px;color:var(--muted);font-size:.8rem}
.price .btn{width:100%;margin-top:auto}
.price-note{margin:26px auto 0;max-width:70ch;text-align:center;color:var(--muted);font-size:.88rem}
.trialbox{display:flex;gap:18px;align-items:flex-start;background:var(--ink);color:#dce6ee;border-radius:16px;padding:26px 28px;margin-bottom:30px;position:relative;overflow:hidden}
.trialbox::before{content:"";position:absolute;bottom:-160px;right:-80px;width:420px;height:300px;background:radial-gradient(circle,rgba(46,203,130,.2),transparent 62%)}
.trialbox > *{position:relative}
.trialbox h2{color:#fff;font-size:1.35rem;font-weight:800}
.trialbox p{margin-top:8px;color:#a9bac8;font-size:.97rem}
.trialbox .ic{flex:none;width:44px;height:44px;border-radius:12px;background:rgba(46,203,130,.16);color:var(--accent-bright);display:grid;place-items:center}
.trialbox .ic svg{width:22px;height:22px}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--bg);box-shadow:var(--shadow);-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%}
.cmp{min-width:620px}
.cmp th,.cmp td{padding:14px 16px;text-align:center;border-bottom:1px solid var(--line);font-size:.95rem;vertical-align:middle}
.cmp th:first-child,.cmp td:first-child{text-align:left;color:var(--ink);font-weight:500}
.cmp thead th{background:var(--bg-2);color:var(--ink);font-weight:700}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp td[data-has="1"] .mk{color:var(--accent);font-weight:800}
.cmp td[data-has="0"] .mk{color:var(--faint)}
.cmp td{position:relative}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.fineprint{margin-top:14px;color:var(--muted);font-size:.86rem}
.faq{max-width:780px;margin:0 auto;display:grid;gap:12px}
details{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:2px 22px}
details[open]{border-color:color-mix(in srgb,var(--accent) 42%,var(--line))}
summary{cursor:pointer;font-weight:700;color:var(--ink);padding:18px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
summary::-webkit-details-marker{display:none}
summary .pl{flex:none;color:var(--accent);font-size:1.4rem;line-height:1;transition:transform .2s}
details[open] summary .pl{transform:rotate(45deg)}
details .ans{padding-bottom:20px;color:var(--muted)}
.cta-card{background:var(--ink);color:#fff;border-radius:22px;padding:56px 32px;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:"";position:absolute;bottom:-180px;left:50%;transform:translateX(-50%);width:640px;height:420px;background:radial-gradient(circle,rgba(46,203,130,.18),transparent 62%)}
.cta-card h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.3rem);font-weight:800;position:relative}
.cta-card p{position:relative;margin:14px auto 26px;max-width:52ch;color:#a9bac8}
.cta-card .btn-primary{background:var(--accent-bright);color:#07251a}
.cta-card .btn-primary:hover{background:#27b875}
.linkrow{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}
/* trang văn bản (pháp lý, nhật ký thay đổi) */
.doc{max-width:780px;margin-inline:auto;padding:46px 24px 90px}
.doc h2{font-size:1.3rem;font-weight:700;margin:2.3rem 0 .55rem;letter-spacing:-.01em}
.doc h2:first-child{margin-top:0}
.doc p{margin:.65rem 0;color:var(--fg)}
.doc ul,.doc ol{margin:.6rem 0;padding-left:1.35rem}
.doc li{margin:.4rem 0}
.doc li::marker{color:var(--accent)}
.doc a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.doc a:hover{color:var(--accent-deep)}
.doc strong{color:var(--ink)}
.doc .meta{color:var(--muted);font-family:var(--mono);font-size:.82rem;margin:0 0 1.6rem}
.doc .tblwrap{margin:1rem 0}
.doc table.plain{min-width:520px}
.doc table.plain th,.doc table.plain td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:.93rem;vertical-align:top}
.doc table.plain thead th{background:var(--bg-2);color:var(--ink)}
.doc table.plain tbody tr:last-child td{border-bottom:0}
.doc .note{margin:1.2rem 0;padding:14px 16px;border-radius:12px;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 30%,var(--line));font-size:.94rem}
.log .entry{display:grid;grid-template-columns:150px 1fr;gap:26px;padding:30px 0;border-top:1px solid var(--line)}
.log .entry:first-child{border-top:0;padding-top:4px}
.log time{font-family:var(--mono);font-size:.8rem;color:var(--muted);padding-top:5px}
.log h3{font-size:1.2rem;margin:0 0 .5rem}
.log ul{margin:.5rem 0 0;padding-left:1.25rem}
.log li{margin:.4rem 0;color:var(--fg)}
.log li::marker{color:var(--accent)}
/* nhiều ngôn ngữ trong một trang: chỉ khối đúng ngôn ngữ của html[lang] được hiện (không cần JS để hiện tiếng Anh) */
[data-l10n]{display:none}
html[lang="en"] [data-l10n][lang="en"],html[lang="vi"] [data-l10n][lang="vi"],html[lang="es"] [data-l10n][lang="es"],html[lang="zh"] [data-l10n][lang="zh"],html[lang="ja"] [data-l10n][lang="ja"]{display:block}
/* 404 */
.nf{text-align:center;padding-block:84px 96px}
.nf .big{font-family:var(--mono);font-weight:600;font-size:clamp(4rem,12vw,7rem);color:var(--accent);line-height:1;letter-spacing:-.04em}
.nf h1{font-size:clamp(1.8rem,3.6vw,2.4rem);font-weight:800;margin-top:14px}
.nf p{margin:14px auto 28px;max-width:46ch;color:var(--muted)}
footer{background:var(--ink);color:#8fa2b2;padding-block:52px 36px;border-top:1px solid var(--line-2)}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.fgrid h5{margin:0 0 13px;font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:#cdd9e3}
.fgrid a{display:block;color:#8fa2b2;padding:5px 0;font-size:.92rem}
.fgrid a:hover{color:var(--accent-bright)}
.fbrand{color:#fff;font-weight:800;font-size:1.15rem;display:flex;align-items:center;gap:10px}
.fbot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:36px;padding-top:24px;border-top:1px solid var(--line-2);font-family:var(--mono);font-size:.74rem;color:#6f8192}
.suggest{position:fixed;left:16px;right:16px;bottom:16px;z-index:60;max-width:460px;margin-inline:auto;background:#0f1a28;color:#dce6ee;border:1px solid var(--line-2);border-radius:14px;box-shadow:0 18px 50px rgba(0,0,0,.45);padding:14px 16px;display:flex;align-items:center;gap:12px}
.suggest p{font-size:.92rem;flex:1;min-width:0}
.suggest .btn{min-height:40px;padding:0 15px;font-size:.88rem}
.suggest .x{background:transparent;border:0;color:#8fa2b2;cursor:pointer;font-size:1.3rem;line-height:1;padding:4px}
@media (max-width:900px){
  .nav-links{display:none}.nav-right .btn-nav-ghost,.nav-right .lang-wrap{display:none}.menu-btn{display:grid;place-items:center}
  .mobile-menu:not([hidden]){display:block}
  .phead{padding-block:28px 44px}
  .feats,.prices{grid-template-columns:1fr}
  .price.feat-plan{order:-1}
  .fgrid{grid-template-columns:1fr 1fr}
  section{padding-block:52px}
  .log .entry{grid-template-columns:1fr;gap:6px}
  .trialbox{flex-direction:column;padding:22px}
}
@media (max-width:560px){.fgrid{grid-template-columns:1fr}.doc{padding-top:34px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
:focus-visible{outline:2px solid var(--accent-bright);outline-offset:2px;border-radius:6px}