/* =====================================================================
   BOOKA — App đặt lịch cho salon, spa, phòng khám nhỏ
   Phong cách: Soft gradient SaaS — nền trắng xen dải gradient pastel
   tím→xanh, brand tím #6C5CE7, bo góc 16px, bóng mềm, icon line.
   Font: 'Plus Jakarta Sans' (tiêu đề) + 'Inter' (thân), có Vietnamese.
   Điểm riêng: mockup điện thoại + lịch tuần dựng bằng CSS, thẻ lịch hẹn
   nổi (position + bóng), chấm "đang online" nhấp nháy nhẹ ở avatar.
   Biến trong :root. Container 1200px. Breakpoints: 1100 / 980 / 640px.
   ===================================================================== */
:root{
  --brand:#6C5CE7;--brand-dark:#4B3FC4;--brand-light:#ECE9FF;
  --ink:#1F2340;--muted:#5D6280;--line:#E6E8F2;--bg:#FFFFFF;--soft:#F7F8FC;
  --grad:linear-gradient(135deg,#EEF0FF 0%,#E6F7F4 100%);
  --grad-brand:linear-gradient(135deg,#6C5CE7,#8E7CFF);
  --mint:#1DB3A1;--peach:#FF8A65;--gold:#F6B93B;
  --radius:16px;--shadow:0 10px 30px rgba(31,35,64,.08);--shadow-lg:0 24px 60px rgba(31,35,64,.14);
  --ph:linear-gradient(135deg,#ECE9FF,#D9F5F0);
  --font-h:'Plus Jakarta Sans',system-ui,sans-serif;--font-b:'Inter',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand-dark);text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-h);line-height:1.2;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,4.4vw,3.4rem);letter-spacing:-.02em}
h2{font-size:clamp(1.7rem,3vw,2.4rem)}
h3{font-size:1.2rem}
p{color:var(--muted)}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--brand);color:#fff;padding:8px 14px;border-radius:8px;z-index:200}
.skip:focus{left:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ph{background:var(--img,var(--ph)) center/cover no-repeat}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand);color:#fff;font-weight:600;padding:14px 26px;border-radius:12px;border:0;cursor:pointer;font-family:var(--font-b);font-size:1rem;transition:background .2s,transform .2s,box-shadow .2s;box-shadow:0 8px 20px rgba(108,92,231,.25)}
.btn:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn--sm{padding:10px 18px;font-size:.92rem;border-radius:10px}
.btn--lg{padding:16px 32px;font-size:1.05rem}
.btn--ghost{background:#fff;color:var(--brand-dark);border:1.5px solid var(--line);box-shadow:none}
.btn--ghost:hover{background:var(--brand-light);border-color:var(--brand-light)}
.btn--light{background:#fff;color:var(--brand-dark);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.btn--light:hover{background:#F2F0FF}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header__inner{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-h);font-weight:800;font-size:1.4rem;color:var(--ink);letter-spacing:-.02em}
.logo__mark{width:36px;height:36px;border-radius:11px;background:var(--grad-brand);display:grid;place-items:center;color:#fff;font-size:1.05rem;box-shadow:0 6px 14px rgba(108,92,231,.3)}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav a{color:var(--ink);font-weight:500;padding:8px 14px;border-radius:10px;transition:background .2s,color .2s}
.nav a:hover{background:var(--brand-light);color:var(--brand-dark)}
.nav a.is-active{color:var(--brand-dark);background:var(--brand-light)}
.nav .nav__cta{display:none}
.header__cta{flex-shrink:0}
.burger{display:none;width:44px;height:44px;border:1.5px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;position:relative;margin-left:auto}
.burger span,.burger span::before,.burger span::after{content:"";position:absolute;left:11px;width:20px;height:2px;background:var(--ink);border-radius:2px}
.burger span{top:20px}
.burger span::before{top:-6px;left:0}
.burger span::after{top:6px;left:0}

/* ---------- Section chung ---------- */
.section{padding:88px 0}
.section--grad{background:var(--grad)}
.section--soft{background:var(--soft)}
.section__head{max-width:640px;margin:0 auto 52px;text-align:center}
.section__head p{font-size:1.08rem;margin-top:12px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-dark);background:var(--brand-light);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.card{background:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);border:1px solid rgba(230,232,242,.7)}
.icon{width:52px;height:52px;border-radius:14px;background:var(--brand-light);display:grid;place-items:center;color:var(--brand-dark);margin-bottom:18px}
.icon svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon--mint{background:#DFF6F2;color:#0E8A7B}
.icon--peach{background:#FFE9E0;color:#D9622F}
.icon--gold{background:#FFF3D6;color:#B07A0A}

/* ---------- Hero ---------- */
.hero{padding:72px 0 96px;background:var(--grad);position:relative;overflow:hidden}
.hero .grid-2{gap:40px}
.hero h1 .hl{color:var(--brand)}
.hero p.lead{font-size:1.15rem;margin:22px 0 32px;max-width:520px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero__note{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:.9rem;color:var(--muted)}
.hero__note li{display:flex;align-items:center;gap:6px}
.hero__note li::before{content:"✓";color:var(--mint);font-weight:700}
.hero__proof{display:flex;align-items:center;gap:14px;margin-top:30px}
.avatars{display:flex}
.avatars .avatar{margin-left:-10px;border:2px solid #fff}
.avatars .avatar:first-child{margin-left:0}
.hero__proof small{color:var(--muted);font-size:.9rem}
.hero__proof b{color:var(--ink)}

/* ---------- Avatar + chấm online ---------- */
.avatar{position:relative;width:42px;height:42px;border-radius:50%;background:var(--grad-brand);color:#fff;font-weight:700;display:inline-grid;place-items:center;font-family:var(--font-h);font-size:.95rem;flex-shrink:0}
.avatar--peach{background:linear-gradient(135deg,#FF8A65,#FFB088)}
.avatar--mint{background:linear-gradient(135deg,#1DB3A1,#5ED6C8)}
.avatar--gold{background:linear-gradient(135deg,#F6B93B,#FFD97A)}
.avatar--lg{width:56px;height:56px;font-size:1.15rem}
.online{position:absolute;right:-1px;bottom:-1px;width:12px;height:12px;border-radius:50%;background:#22C55E;border:2px solid #fff;animation:blink 2.4s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.online{animation:none}}

/* ---------- Mockup điện thoại (CSS thuần) ---------- */
.mock{position:relative;width:min(100%,460px);margin:0 auto;padding:30px 0 30px 40px}
.phone{width:280px;margin:0 auto;background:#1F2340;border-radius:40px;padding:12px;box-shadow:var(--shadow-lg),inset 0 0 0 2px #3A3F63;position:relative}
.phone__notch{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:90px;height:22px;background:#1F2340;border-radius:0 0 14px 14px;z-index:2}
.phone__screen{background:#fff;border-radius:30px;overflow:hidden;min-height:520px;padding:44px 16px 20px}
.app__top{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:14px}
.app__top small{font-size:.72rem;color:var(--muted);display:block}
.app__top b{font-family:var(--font-h);font-size:1.05rem}
.app__top .avatar{width:32px;height:32px;font-size:.8rem}
.app__week{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:14px}
.app__week span{text-align:center;font-size:.62rem;color:var(--muted);padding:6px 0;border-radius:10px}
.app__week span b{display:block;font-size:.85rem;color:var(--ink);font-family:var(--font-h);margin-top:2px}
.app__week span.is-today{background:var(--brand);color:#fff}
.app__week span.is-today b{color:#fff}
.app__slots{display:flex;flex-direction:column;gap:8px}
.slot{display:grid;grid-template-columns:40px 1fr;gap:10px;align-items:center;font-size:.72rem;color:var(--muted)}
.slot b{display:block;background:var(--brand-light);border-left:3px solid var(--brand);border-radius:8px;padding:8px 10px;color:var(--ink);font-weight:600;font-size:.74rem}
.slot--mint b{background:#DFF6F2;border-color:var(--mint)}
.slot--peach b{background:#FFE9E0;border-color:var(--peach)}
.slot--empty b{background:transparent;border:1.5px dashed var(--line);color:var(--muted);font-weight:500}
.app__bar{display:flex;justify-content:space-around;margin-top:18px;padding-top:12px;border-top:1px solid var(--line)}
.app__bar i{width:22px;height:6px;border-radius:3px;background:var(--line);display:block}
.app__bar i:first-child{background:var(--brand)}
.card-float{position:absolute;display:flex;align-items:center;gap:12px;background:#fff;padding:12px 16px;border-radius:14px;box-shadow:var(--shadow-lg);z-index:3;min-width:230px}
.card-float b{display:block;font-size:.88rem;font-family:var(--font-h)}
.card-float small{color:var(--muted);font-size:.78rem}
.card-float--1{top:196px;left:0}
.card-float--2{bottom:70px;right:0;min-width:200px}
.card-float--2 .tag{background:#DCFCE7;color:#15803D;font-size:.72rem;font-weight:600;padding:3px 8px;border-radius:999px}
.mock--sm{padding:20px 0 20px 30px;width:min(100%,420px)}
.mock--sm .phone{width:250px}
.mock--sm .phone__screen{min-height:470px}
.mock--sm .card-float--1{top:120px}

/* ---------- Dải logo ---------- */
.logos{padding:34px 0;border-bottom:1px solid var(--line)}
.logos p{text-align:center;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:18px}
.logos ul{display:flex;flex-wrap:wrap;justify-content:center;gap:16px 44px}
.logos li{font-family:var(--font-h);font-weight:800;font-size:1.25rem;color:#A3A7BF;letter-spacing:-.01em}

/* ---------- 3 bước ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step{position:relative;padding:32px 28px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.step__num{width:44px;height:44px;border-radius:12px;background:var(--grad-brand);color:#fff;font-family:var(--font-h);font-weight:800;display:grid;place-items:center;margin-bottom:18px;font-size:1.1rem}
.step h3{margin-bottom:8px}

/* ---------- Tính năng ---------- */
.feature h3{margin-bottom:8px}
.feature p{font-size:.95rem}
.feature__link{display:inline-block;margin-top:14px;font-weight:600;font-size:.92rem}
.feature__link::after{content:" →"}

/* Tính năng xen kẽ */
.alt{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:56px 0}
.alt:nth-child(even) .alt__media{order:-1}
.alt h2{font-size:clamp(1.5rem,2.4vw,2rem);margin:14px 0 14px}
.alt p{font-size:1.02rem}
.alt ul{margin-top:20px;display:grid;gap:10px}
.alt li{display:flex;gap:10px;align-items:flex-start;color:var(--ink)}
.alt li::before{content:"✓";flex-shrink:0;width:22px;height:22px;border-radius:50%;background:#DCFCE7;color:#15803D;font-size:.75rem;display:grid;place-items:center;margin-top:2px}
.alt__media .ph{aspect-ratio:4/3;border-radius:var(--radius);box-shadow:var(--shadow-lg)}

/* Bảng CSS mini (mockup phụ) */
.panel{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:22px;max-width:440px;margin:0 auto}
.panel__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.panel__head b{font-family:var(--font-h)}
.panel__head span{font-size:.8rem;color:var(--muted)}
.bars{display:flex;align-items:flex-end;gap:10px;height:150px;padding:0 6px;border-bottom:1px solid var(--line)}
.bars i{flex:1;background:var(--brand-light);border-radius:6px 6px 0 0;position:relative}
.bars i.is-hi{background:var(--brand)}
.bars i::after{content:attr(data-l);position:absolute;top:100%;left:0;right:0;text-align:center;font-size:.7rem;color:var(--muted);margin-top:6px;font-style:normal}
.panel__kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:34px}
.panel__kpi div{background:var(--soft);border-radius:10px;padding:10px 12px}
.panel__kpi b{display:block;font-family:var(--font-h);font-size:1.1rem}
.panel__kpi small{color:var(--muted);font-size:.75rem}
.msg{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px}
.msg .avatar{width:34px;height:34px;font-size:.8rem}
.msg div{background:var(--soft);border-radius:0 14px 14px 14px;padding:10px 14px;font-size:.88rem;line-height:1.5}
.msg--out{flex-direction:row-reverse}
.msg--out div{background:var(--brand);color:#fff;border-radius:14px 0 14px 14px}
.staff{display:grid;gap:10px}
.staff li::before{content:none}
.staff li{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;font-size:.9rem}
.staff li b{display:block;font-size:.9rem}
.staff li small{color:var(--muted);font-size:.78rem}
.staff .bar{margin-left:auto;width:90px;height:8px;background:var(--line);border-radius:4px;overflow:hidden;flex-shrink:0}
.staff .bar i{display:block;height:100%;background:var(--brand);border-radius:4px}
.pay{display:grid;gap:12px}
.pay__row{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;padding:10px 0;border-bottom:1px dashed var(--line)}
.pay__total{font-family:var(--font-h);font-size:1.4rem;font-weight:800;text-align:right}
.pay__opts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:6px}
.pay__opts span{border:1.5px solid var(--line);border-radius:10px;padding:10px;text-align:center;font-size:.8rem;font-weight:600}
.pay__opts span.is-on{border-color:var(--brand);background:var(--brand-light);color:var(--brand-dark)}

/* ---------- Ngành ---------- */
.ind{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ind__card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.ind__card .ph{aspect-ratio:16/10}
.ind__body{padding:24px}
.ind__body h3{margin-bottom:8px}
.ind__body p{font-size:.95rem}
.ind__body ul{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.ind__body li{font-size:.78rem;background:var(--brand-light);color:var(--brand-dark);padding:4px 10px;border-radius:999px;font-weight:600}

/* ---------- Số liệu ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{display:block;font-family:var(--font-h);font-size:clamp(2rem,3.5vw,2.8rem);font-weight:800;color:var(--brand-dark);letter-spacing:-.02em}
.stat span{color:var(--muted)}

/* ---------- Đánh giá ---------- */
.review{display:flex;flex-direction:column;gap:18px}
.review .stars{color:var(--gold);letter-spacing:2px;font-size:.95rem}
.review blockquote{color:var(--ink);font-size:1rem;line-height:1.65}
.review__who{display:flex;align-items:center;gap:12px;margin-top:auto}
.review__who b{display:block;font-size:.95rem}
.review__who small{color:var(--muted);font-size:.82rem}
.review--long blockquote{font-size:1.08rem}

/* ---------- CTA ---------- */
.cta{background:var(--grad-brand);color:#fff;border-radius:24px;padding:56px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;box-shadow:0 24px 60px rgba(108,92,231,.3)}
.cta h2,.cta p{color:#fff}
.cta p{opacity:.9;margin-top:10px}
.cta form{display:flex;gap:10px;background:#fff;padding:8px;border-radius:14px}
.cta input{flex:1;border:0;padding:12px 14px;font-size:1rem;font-family:var(--font-b);outline:none;color:var(--ink);min-width:0}
.cta small{display:block;margin-top:10px;opacity:.85;font-size:.85rem}
.cta .form-msg{color:#fff}

/* ---------- Form ---------- */
.field{display:grid;gap:6px;margin-bottom:16px}
.field label{font-weight:600;font-size:.92rem}
.field input,.field select,.field textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:13px 14px;font-size:1rem;font-family:var(--font-b);color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(108,92,231,.15)}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--muted);margin-bottom:20px}
.check input{margin-top:4px;accent-color:var(--brand)}
.form-msg{margin-top:14px;font-weight:600;color:var(--brand-dark);min-height:1.4em}

/* ---------- Page hero (trang phụ) ---------- */
.page-hero{background:var(--grad);padding:64px 0 56px;text-align:center}
.page-hero p{max-width:600px;margin:14px auto 0;font-size:1.1rem}

/* ---------- Bảng giá ---------- */
.toggle{display:inline-flex;align-items:center;background:#fff;padding:6px;border-radius:999px;box-shadow:var(--shadow);margin-top:24px}
.toggle button{border:0;background:transparent;padding:10px 20px;border-radius:999px;font-weight:600;cursor:pointer;font-family:var(--font-b);font-size:.95rem;color:var(--muted);display:inline-flex;align-items:center}
.toggle button.is-on{background:var(--brand);color:#fff}
.toggle .save{font-size:.72rem;background:#DCFCE7;color:#15803D;padding:2px 8px;border-radius:999px;margin-left:8px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch;padding-top:16px}
.plan{background:#fff;border-radius:20px;padding:36px 32px;box-shadow:var(--shadow);border:1px solid rgba(230,232,242,.7);display:flex;flex-direction:column}
.plan--hot{background:var(--ink);color:#fff;transform:scale(1.04);box-shadow:var(--shadow-lg);position:relative;border:0}
.plan--hot p,.plan--hot .plan__per{color:rgba(255,255,255,.75)}
.plan--hot ul li{color:#fff}
.plan--hot h3{color:#fff}
.plan__badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad-brand);color:#fff;font-size:.78rem;font-weight:700;padding:6px 14px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:1.25rem;margin-bottom:6px}
.plan__desc{font-size:.92rem;margin-bottom:22px}
.plan__price{font-family:var(--font-h);font-size:2.4rem;font-weight:800;letter-spacing:-.02em;line-height:1}
.plan__price small{font-size:1rem;font-weight:600}
.plan__per{color:var(--muted);font-size:.9rem;margin:8px 0 26px;min-height:1.4em}
.plan ul{display:grid;gap:10px;margin-bottom:28px;font-size:.94rem}
.plan li{display:flex;gap:10px;align-items:flex-start;color:var(--ink)}
.plan li::before{content:"✓";color:var(--mint);font-weight:700;flex-shrink:0}
.plan li.no{color:#A3A7BF}
.plan--hot ul li.no{color:rgba(255,255,255,.45)}
.plan li.no::before{content:"–";color:inherit}
.plan--hot ul li.no::before{color:rgba(255,255,255,.45)}
.plan .btn{margin-top:auto;width:100%}
.compare{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);min-width:640px}
.compare th,.compare td{padding:14px 18px;text-align:center;border-bottom:1px solid var(--line);font-size:.94rem}
.compare th{font-family:var(--font-h);background:var(--soft)}
.compare th:first-child,.compare td:first-child{text-align:left;font-weight:500}
.compare tr:last-child td{border-bottom:0}
.compare .yes{color:var(--mint);font-weight:700}
.compare .no{color:#C4C7D6}
.table-wrap{overflow-x:auto;border-radius:var(--radius)}
.faq{max-width:760px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:0 24px}
.faq summary{cursor:pointer;font-weight:600;font-family:var(--font-h);padding:20px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--brand);font-weight:400;flex-shrink:0}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 20px}

/* ---------- Case study ---------- */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.case{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.case .ph{aspect-ratio:16/10;position:relative}
.case__tag{position:absolute;top:14px;left:14px;background:#fff;color:var(--brand-dark);font-size:.75rem;font-weight:700;padding:5px 10px;border-radius:999px}
.case__body{padding:24px;display:flex;flex-direction:column;flex:1}
.case__body h3{margin-bottom:6px}
.case__body p{font-size:.94rem}
.case__nums{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding-top:20px}
.case__nums div{background:var(--soft);border-radius:10px;padding:10px 12px}
.case__nums b{display:block;font-family:var(--font-h);font-size:1.3rem;color:var(--brand-dark)}
.case__nums small{color:var(--muted);font-size:.76rem}

/* ---------- Blog ---------- */
.blog{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.posts{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.post{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.post .ph{aspect-ratio:16/9}
.post__body{padding:22px 24px 26px}
.post__meta{display:flex;gap:10px;align-items:center;font-size:.8rem;color:var(--muted);margin-bottom:10px}
.post__meta span:first-child{color:var(--brand-dark);font-weight:600;background:var(--brand-light);padding:3px 10px;border-radius:999px}
.post h3{margin-bottom:8px;font-size:1.12rem}
.post h3 a{color:var(--ink)}
.post h3 a:hover{color:var(--brand-dark)}
.post p{font-size:.92rem}
.sidebar{display:grid;gap:24px;position:sticky;top:96px}
.sidebar h4{font-size:1rem;margin-bottom:14px}
.topics{display:grid;gap:8px}
.topics a{display:flex;justify-content:space-between;color:var(--ink);padding:8px 12px;border-radius:10px;font-size:.94rem}
.topics a:hover,.topics a.is-on{background:var(--brand-light);color:var(--brand-dark)}
.topics span{color:var(--muted);font-size:.85rem}
.side-cta{background:var(--grad-brand);color:#fff;border-radius:var(--radius);padding:26px}
.side-cta h4,.side-cta p{color:#fff}
.side-cta p{opacity:.9;font-size:.92rem;margin-bottom:16px}

/* ---------- Đăng ký ---------- */
.signup{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.signup .card{padding:40px}
.signup .card h2{font-size:1.6rem;margin-bottom:6px}
.signup .card>p{margin-bottom:26px}
.benefits{display:grid;gap:16px;margin-top:24px}
.benefit{display:flex;gap:16px;align-items:flex-start}
.benefit .icon{margin:0;width:46px;height:46px;flex-shrink:0}
.benefit b{display:block;font-family:var(--font-h);margin-bottom:2px}
.benefit p{font-size:.92rem}
.contact-box{margin-top:28px;padding:24px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.contact-box h3{font-size:1.05rem;margin-bottom:12px}
.contact-box li{display:flex;gap:10px;padding:6px 0;font-size:.94rem;color:var(--ink)}
.contact-box li span{color:var(--muted);min-width:80px;flex-shrink:0}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:#C9CCE0;padding:64px 0 28px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer .logo{color:#fff}
.footer p{color:#A3A7BF;font-size:.94rem;margin-top:14px;max-width:320px}
.footer h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer li{margin-bottom:10px;font-size:.94rem}
.footer a{color:#C9CCE0}
.footer a:hover{color:#fff}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:24px;font-size:.85rem;color:#A3A7BF}
.badge-store{display:inline-flex;gap:8px;align-items:center;border:1px solid rgba(255,255,255,.2);border-radius:10px;padding:8px 12px;font-size:.82rem;color:#fff;margin:6px 6px 0 0}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .grid-4,.stats{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr}
  .alt{gap:40px}
}
@media (max-width:980px){
  .nav{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 24px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav.is-open{display:flex}
  .nav a{padding:12px 14px}
  .nav .nav__cta{display:inline-flex;margin-top:8px;color:#fff}
  .nav .nav__cta:hover{background:var(--brand-dark);color:#fff}
  .header__cta{display:none}
  .burger{display:block}
  .grid-2,.alt,.signup,.blog,.cta{grid-template-columns:1fr}
  .hero{padding:48px 0 64px;text-align:center}
  .hero p.lead,.hero .hero__cta,.hero__note,.hero__proof{justify-content:center;margin-left:auto;margin-right:auto}
  .alt:nth-child(even) .alt__media{order:0}
  .alt{padding:40px 0}
  .grid-3,.steps,.ind,.cases,.plans{grid-template-columns:repeat(2,1fr)}
  .plan--hot{transform:none}
  .sidebar{position:static}
  .section{padding:64px 0}
  .cta{padding:40px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .grid-3,.grid-4,.steps,.ind,.cases,.plans,.posts,.field--row,.stats,.footer__grid{grid-template-columns:1fr}
  .stats{gap:28px}
  .mock,.mock--sm{padding:20px 0}
  .card-float{min-width:0}
  .card-float--1{left:-6px;top:110px}
  .card-float--2{right:-6px}
  .cta{padding:32px 24px}
  .cta form{flex-direction:column}
  .signup .card{padding:26px 20px}
  .section{padding:52px 0}
  .hero__cta .btn{width:100%}
  .header__inner{height:64px}
  .nav{top:64px}
}