/* ==========================================================================
   SMILE CARE — Phòng khám nha khoa (2 cơ sở Hà Nội)
   Phong cách: CORPORATE SẠCH + XANH NGỌC — phổ thông y tế, tin cậy, dễ đọc.
   - Nền trắng / xám nhạt #F3F7F8 xen kẽ; brand xanh ngọc #0FA3A3, đậm #0B7A7A,
     nhạt #E0F4F4; chữ #1B2B2E; nhấn phụ cam nhạt #FF8A5B cho khuyến mãi / nút phụ.
   - Font: tiêu đề 'Lexend' (có Vietnamese), thân 'Inter'.
   - ĐIỂM RIÊNG: (1) mô-típ SÓNG RĂNG CƯA MỀM (SVG .wave) ở mép dưới hero và
     giữa các section xen kẽ; (2) THANH TIN CẬY (.trust) 4 ô số liệu trên nền
     trắng nổi đè mép dưới hero; (3) BẢNG GIÁ dạng bảng sạch có nhãn "Phổ biến".
   - Layout: thanh trên cùng nhỏ (hotline 2 cơ sở, giờ mở cửa, nút đặt lịch),
     header trắng dính (logo + nav + nút "Đặt lịch ngay"), hero 2 cột: chữ trái +
     form đặt lịch nhanh trong thẻ nổi bên phải, trên ảnh hero-01 mờ.
   - Ảnh: link trực tiếp (images.txt) qua biến --img trên .ph; thiếu ảnh dùng
     avatar chữ cái / gradient xanh ngọc nhạt / SVG răng inline.
   - Breakpoints: 1100 / 980 / 640px. JS inline tối thiểu (burger, lọc chip, chọn giờ).
   ========================================================================== */
:root{
  --bg:#FFFFFF; --bg-soft:#F3F7F8; --line:#DDE7E9; --line-2:#C9D8DB;
  --ink:#1B2B2E; --ink-2:#3F5256; --muted:#6B7C80;
  --brand:#0FA3A3; --brand-dark:#0B7A7A; --brand-light:#E0F4F4; --brand-pale:#F0FAFA;
  --accent:#FF8A5B; --accent-light:#FFEFE7;
  --ph:linear-gradient(135deg,#E0F4F4,#BFE8E8 60%,#9FDCDC);
  --ff-d:'Lexend','Inter',system-ui,sans-serif;
  --ff-b:'Inter',system-ui,-apple-system,sans-serif;
  --r:14px; --r-lg:20px;
  --shadow:0 8px 28px rgba(11,122,122,.10);
  --shadow-sm:0 2px 10px rgba(27,43,46,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--ff-b);font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--brand-dark)}
h1,h2,h3,h4{font-family:var(--ff-d);font-weight:600;line-height:1.2;margin:0 0 .5em;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.2vw,3.1rem)}
h2{font-size:clamp(1.55rem,3vw,2.15rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--brand-dark);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.ph{background:var(--img,var(--ph)) center/cover no-repeat}
.eyebrow{display:inline-block;font-family:var(--ff-d);font-size:.8rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-dark);margin-bottom:.6em}
.lead{font-size:1.1rem;color:var(--ink-2)}
.muted{color:var(--muted)}
.center{text-align:center}
.sec-head{max-width:640px;margin:0 auto 40px;text-align:center}
.sec-head p{color:var(--ink-2);margin:0}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-family:var(--ff-d);font-weight:500;font-size:.95rem;text-decoration:none;border:2px solid var(--brand);background:var(--brand);color:#fff;cursor:pointer;transition:background .2s,border-color .2s,transform .15s;white-space:nowrap;line-height:1.2}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--brand-dark)}
.btn--ghost:hover{background:var(--brand-light);border-color:var(--brand)}
.btn--white{background:#fff;border-color:#fff;color:var(--brand-dark)}
.btn--white:hover{background:var(--brand-light);border-color:var(--brand-light)}
.btn--accent{background:var(--accent);border-color:var(--accent);color:#fff}
.btn--accent:hover{background:#E9703F;border-color:#E9703F}
.btn--sm{padding:8px 16px;font-size:.85rem}
.btn--lg{padding:15px 30px;font-size:1.05rem}
.btn--block{width:100%}

/* ---------- Thanh trên cùng ---------- */
.topbar{background:var(--brand-dark);color:#fff;font-size:.82rem}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar__list{display:flex;gap:22px;flex-wrap:wrap;margin:0;padding:0;list-style:none}
.topbar__list li{display:inline-flex;align-items:center;gap:6px}
.topbar__list svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.topbar a{color:#fff;text-decoration:none}
.topbar a:hover{text-decoration:underline}
.topbar .btn{background:#fff;border-color:#fff;color:var(--brand-dark);padding:5px 14px;font-size:.8rem}
.topbar .btn:hover{background:var(--brand-light)}

/* ---------- Header dính ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header .container{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;position:relative}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--ff-d);font-weight:600;font-size:1.25rem;letter-spacing:-.01em}
.logo svg{width:38px;height:38px;flex:none}
.logo small{display:block;font-family:var(--ff-b);font-weight:400;font-size:.68rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;line-height:1}
.logo span{display:flex;flex-direction:column;gap:3px;line-height:1}
.nav{display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}
.nav a{display:block;padding:8px 13px;border-radius:8px;text-decoration:none;color:var(--ink-2);font-weight:500;font-size:.95rem;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)}
.header__cta{display:flex;align-items:center;gap:10px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative;padding:0}
.burger::before,.burger::after,.burger i{content:"";position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.burger::before{top:14px}.burger i{top:21px}.burger::after{top:28px}
.burger.is-open::before{transform:translateY(7px) rotate(45deg)}
.burger.is-open::after{transform:translateY(-7px) rotate(-45deg)}
.burger.is-open i{opacity:0}

/* ---------- Sóng răng cưa mềm ---------- */
.wave{display:block;width:100%;height:56px;line-height:0;overflow:hidden}
.wave svg{display:block;width:100%;height:100%}
.wave--white svg path{fill:#fff}
.wave--soft svg path{fill:var(--bg-soft)}
.wave--brand svg path{fill:var(--brand-dark)}
.wave--light svg path{fill:var(--brand-light)}
.wave--flip svg{transform:scaleY(-1)}
.wave--on-white{background:#fff}
.wave--on-soft{background:var(--bg-soft)}
.wave--on-light{background:var(--brand-light)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--brand-light);overflow:hidden;padding:64px 0 120px}
.hero__bg{position:absolute;inset:0;opacity:.22;filter:saturate(.5)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(224,244,244,.97) 0%,rgba(224,244,244,.85) 45%,rgba(224,244,244,.6) 100%)}
.hero .container{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{margin-bottom:.5em}
.hero h1 em{font-style:normal;color:var(--brand-dark)}
.hero .lead{max-width:520px}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero__badges{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 0;padding:0;list-style:none}
.hero__badges li{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.85rem;color:var(--ink-2)}
.hero__badges svg{width:16px;height:16px;fill:none;stroke:var(--brand);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.hero .wave{position:absolute;left:0;right:0;bottom:-1px;z-index:1}
.hero--sub{padding:56px 0 96px}
.hero--sub .container{display:block;max-width:760px;text-align:center}
.hero--sub .lead{margin:0 auto}
.hero--sub .crumb{margin-bottom:14px}
.crumb{font-size:.85rem;color:var(--muted)}
.crumb a{color:var(--brand-dark);text-decoration:none}
.crumb a:hover{text-decoration:underline}

/* Form nhanh trong hero */
.quick{background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:28px;position:relative;z-index:2}
.quick h2{font-size:1.3rem;margin-bottom:6px}
.quick > p{color:var(--muted);font-size:.9rem;margin-bottom:18px}
.quick__row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* ---------- Form chung ---------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:.85rem;font-weight:500;color:var(--ink-2)}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:.95rem;padding:11px 13px;border:1px solid var(--line-2);border-radius:10px;background:#fff;color:var(--ink);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 3px var(--brand-light)}
.field textarea{min-height:110px;resize:vertical}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%230B7A7A' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
.form-note{font-size:.82rem;color:var(--muted);margin:8px 0 0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.form-grid .field--full{grid-column:1/-1}
.check{display:flex;align-items:flex-start;gap:10px;font-size:.9rem;color:var(--ink-2);margin-bottom:16px}
.check input{width:18px;height:18px;margin-top:2px;accent-color:var(--brand)}
.form-ok{display:none;background:var(--brand-light);border:1px solid var(--brand);color:var(--brand-dark);border-radius:10px;padding:12px 14px;font-size:.9rem;margin-top:14px}
.form-ok.is-show{display:block}

/* ---------- Thanh tin cậy ---------- */
.trust{position:relative;z-index:3;margin-top:-72px}
.trust__grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.trust__item{padding:26px 22px;text-align:center;border-right:1px solid var(--line)}
.trust__item:last-child{border-right:0}
.trust__num{font-family:var(--ff-d);font-size:2.2rem;font-weight:600;color:var(--brand-dark);line-height:1;letter-spacing:-.02em}
.trust__num sup{font-size:1.1rem;color:var(--brand);top:-.7em}
.trust__label{font-size:.9rem;color:var(--muted);margin-top:8px}

/* ---------- Section ---------- */
.section{padding:80px 0}
.section--soft{background:var(--bg-soft)}
.section--light{background:var(--brand-light)}
.section--tight{padding:56px 0}

/* ---------- Lưới thẻ chung ---------- */
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:box-shadow .2s,transform .2s,border-color .2s}
.card:hover{box-shadow:var(--shadow);border-color:var(--brand-light);transform:translateY(-2px)}
.card h3{margin-bottom:.4em}
.card p{color:var(--ink-2);margin-bottom:.6em;font-size:.95rem}
.card p:last-child{margin-bottom:0}
.card__link{font-weight:500;text-decoration:none;color:var(--brand-dark);font-size:.92rem}
.card__link:hover{text-decoration:underline}
.icon{width:52px;height:52px;border-radius:14px;background:var(--brand-light);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--brand-dark)}
.icon svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon--accent{background:var(--accent-light);color:#D8602F}
.tag{display:inline-block;font-size:.75rem;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--brand-light);color:var(--brand-dark);letter-spacing:.02em;line-height:1.5;white-space:nowrap}
.tag--accent{background:var(--accent-light);color:#D8602F}
.tag--hot{background:var(--accent);color:#fff}

/* Dịch vụ chi tiết */
.svc{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:start}
.svc .icon{margin-bottom:0}
.svc__meta{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0 0;padding:0;list-style:none;font-size:.88rem;color:var(--muted)}
.svc__meta strong{color:var(--ink);font-weight:600}
.svc__price{text-align:right;min-width:150px}
.svc__price b{display:block;font-family:var(--ff-d);color:var(--brand-dark);font-size:1.25rem}
.svc__price small{display:block;color:var(--muted);font-size:.8rem;margin-bottom:12px}

/* Lý do chọn (2 cột ảnh + list) */
.why{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.why__img{border-radius:var(--r-lg);aspect-ratio:4/3;box-shadow:var(--shadow);position:relative;overflow:hidden}
.why__img .badge{position:absolute;left:20px;bottom:20px;background:#fff;border-radius:12px;padding:12px 16px;box-shadow:var(--shadow-sm);font-size:.85rem;color:var(--ink-2)}
.why__img .badge b{display:block;font-family:var(--ff-d);color:var(--brand-dark);font-size:1.15rem}
.why__list{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.why__list li{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start}
.why__list .icon{width:44px;height:44px;border-radius:12px;margin:0}
.why__list .icon svg{width:22px;height:22px}
.why__list h3{font-size:1.05rem;margin-bottom:.25em}
.why__list p{margin:0;color:var(--ink-2);font-size:.93rem}

/* Quy trình */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:#fff;border-radius:var(--r);padding:26px;border:1px solid var(--line);position:relative}
.step__num{width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;font-family:var(--ff-d);font-weight:600;display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:1.05rem}
.step p{color:var(--ink-2);font-size:.93rem;margin:0}

/* Bác sĩ */
.doc{text-align:center}
.avatar{width:96px;height:96px;border-radius:50%;margin:0 auto 14px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;font-family:var(--ff-d);font-size:2rem;font-weight:600;display:flex;align-items:center;justify-content:center;border:4px solid var(--brand-light);letter-spacing:.02em;flex:none}
.avatar--sm{width:52px;height:52px;font-size:1.1rem;border-width:3px;margin:0}
.avatar--alt{background:linear-gradient(135deg,#FFB08A,var(--accent))}
.avatar--alt2{background:linear-gradient(135deg,#5CC9C9,#0FA3A3)}
.avatar--alt3{background:linear-gradient(135deg,#2E8B8B,#0B7A7A)}
.doc__role{color:var(--brand-dark);font-weight:500;font-size:.9rem;margin-bottom:6px}
.doc__meta{list-style:none;margin:14px 0 0;padding:14px 0 0;border-top:1px dashed var(--line);font-size:.88rem;color:var(--ink-2);display:grid;gap:6px;text-align:left}
.doc__meta li{display:flex;gap:8px}
.doc__meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none;margin-top:9px}
.doc--wide{display:grid;grid-template-columns:120px 1fr;gap:24px;text-align:left;align-items:start}
.doc--wide .avatar{margin:0}
.doc--wide .doc__meta{text-align:left}
.sched{width:100%;border-collapse:collapse;font-size:.85rem;margin-top:14px}
.sched th,.sched td{padding:7px 10px;border:1px solid var(--line);text-align:left}
.sched th{background:var(--brand-pale);color:var(--brand-dark);font-weight:600}

/* Bảng giá */
.price-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.table-scroll{overflow-x:auto}
.price-table{width:100%;border-collapse:collapse;min-width:620px}
.price-table th,.price-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
.price-table th{background:var(--brand-pale);color:var(--brand-dark);font-family:var(--ff-d);font-weight:500;font-size:.85rem;letter-spacing:.03em;text-transform:uppercase}
.price-table td:last-child,.price-table th:last-child{text-align:right;white-space:nowrap}
.price-table tbody tr:last-child td{border-bottom:0}
.price-table tbody tr:hover td{background:var(--brand-pale)}
.price-table td b{font-family:var(--ff-d);font-weight:600;color:var(--brand-dark)}
.price-table small{display:block;color:var(--muted);font-size:.8rem;margin-top:2px}
.price-table .tag{margin-left:8px;vertical-align:middle}
.price-group td{font-family:var(--ff-d);font-weight:600;color:var(--ink);background:var(--bg-soft);font-size:.95rem}
.price-table tbody tr.price-group:hover td{background:var(--bg-soft)}
.price-note{padding:16px 20px;font-size:.85rem;color:var(--muted);background:var(--bg-soft);border-top:1px solid var(--line)}
.chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:28px}
.chip{border:1px solid var(--line-2);background:#fff;color:var(--ink-2);border-radius:999px;padding:8px 18px;font:inherit;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--brand);color:var(--brand-dark)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}

/* Đánh giá */
.review{display:flex;flex-direction:column;gap:14px}
.review__stars{color:#F5B301;font-size:1rem;letter-spacing:2px}
.review blockquote{margin:0;color:var(--ink-2);font-size:.97rem;flex:1}
.review__who{display:flex;align-items:center;gap:12px}
.review__who b{display:block;font-size:.95rem}
.review__who small{color:var(--muted);font-size:.82rem}

/* Cơ sở */
.branch{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.branch__card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:grid;grid-template-columns:200px 1fr}
.branch__card .ph{min-height:200px}
.branch__body{padding:24px}
.branch__body h3{margin-bottom:.3em}
.branch__list{list-style:none;margin:12px 0 16px;padding:0;display:grid;gap:8px;font-size:.92rem;color:var(--ink-2)}
.branch__list li{display:flex;gap:10px;align-items:flex-start}
.branch__list svg{width:18px;height:18px;flex:none;margin-top:3px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.branch__list a{color:var(--ink);text-decoration:none;font-weight:500}
.map{border-radius:var(--r);min-height:280px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;color:var(--brand-dark);font-weight:500;position:relative;overflow:hidden;text-align:center;padding:20px;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:40px 40px;background-color:var(--brand-pale)}
.map svg{width:44px;height:44px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.map small{color:var(--muted);font-weight:400;font-size:.82rem}

/* CTA lớn */
.cta{background:var(--brand-dark);color:#fff;text-align:center;padding:72px 0}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 26px}
.cta .btn--white{margin:0 6px 10px}
.cta .btn--ghost{color:#fff;border-color:rgba(255,255,255,.55);margin:0 6px 10px}
.cta .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* Bài viết / FAQ */
.post .ph{aspect-ratio:16/10;border-radius:10px;margin-bottom:16px}
.post .tag{margin-bottom:10px}
.post h3{font-size:1.1rem}
.post__meta{font-size:.82rem;color:var(--muted);margin-bottom:8px}
.tooth-ph{display:flex;align-items:center;justify-content:center;background:var(--ph);border-radius:10px;aspect-ratio:16/10;margin-bottom:16px}
.tooth-ph svg{width:64px;height:64px;fill:#fff;stroke:var(--brand-dark);stroke-width:1.5;stroke-linejoin:round;opacity:.9}
.faq{max-width:820px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:0 20px}
.faq summary{cursor:pointer;padding:16px 0;font-family:var(--ff-d);font-weight:500;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--brand);flex:none;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 16px;color:var(--ink-2);font-size:.95rem}

/* Đặt lịch */
.book{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:start}
.book__form{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-sm)}
.book__form h2{font-size:1.4rem}
.slots{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.slot{border:1px solid var(--line-2);background:#fff;border-radius:8px;padding:9px 6px;font:inherit;font-size:.88rem;cursor:pointer;color:var(--ink-2);transition:all .15s}
.slot:hover{border-color:var(--brand);color:var(--brand-dark)}
.slot.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.slot:disabled{opacity:.4;cursor:not-allowed;text-decoration:line-through}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;margin-bottom:20px}
.aside-card h3{font-size:1.05rem}
.aside-card ol,.aside-card ul{margin:0;padding-left:20px;color:var(--ink-2);font-size:.93rem;display:grid;gap:8px}
.aside-card--brand{background:var(--brand-light);border-color:var(--brand-light)}
.hotline-box{display:flex;align-items:center;gap:14px;background:var(--brand-dark);color:#fff;border-radius:var(--r);padding:18px 20px}
.hotline-box svg{width:30px;height:30px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.hotline-box small{display:block;opacity:.8;font-size:.8rem}
.hotline-box b{font-family:var(--ff-d);font-size:1.2rem}
.hotline-box a{color:#fff;text-decoration:none}

/* Trả góp / gói */
.plan{border:2px solid var(--line);border-radius:var(--r);padding:26px;background:#fff;position:relative}
.plan--hot{border-color:var(--brand)}
.plan--hot .tag{position:absolute;top:-12px;left:22px}
.plan h3{font-size:1.1rem;margin-top:6px}
.plan__num{font-family:var(--ff-d);font-size:1.9rem;font-weight:600;color:var(--brand-dark);margin:6px 0}
.plan ul{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px;font-size:.92rem;color:var(--ink-2)}
.plan li{padding-left:22px;position:relative}
.plan li::before{content:"";position:absolute;left:0;top:7px;width:12px;height:7px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg)}

/* Liên hệ */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}

/* Footer */
.footer{background:var(--ink);color:#B9C7CA;padding:64px 0 0;font-size:.92rem}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer a{color:#B9C7CA;text-decoration:none}
.footer a:hover{color:#fff}
.footer .logo{color:#fff;margin-bottom:14px}
.footer .logo small{color:#8FA3A7}
.footer p{margin:0 0 10px}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;font-size:.82rem;color:#8FA3A7}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .hero .container{gap:32px}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 20px 16px;gap:2px;box-shadow:var(--shadow)}
  .nav.is-open{display:flex}
  .nav a{padding:12px 14px}
  .burger{display:block}
  .header__cta .btn{display:none}
  .hero{padding:48px 0 110px}
  .hero .container{grid-template-columns:1fr}
  .hero::before{background:rgba(224,244,244,.9)}
  .trust__grid{grid-template-columns:repeat(2,1fr)}
  .trust__item:nth-child(2){border-right:0}
  .trust__item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .why,.book,.contact,.branch{grid-template-columns:1fr}
  .why{gap:32px}
  .section{padding:64px 0}
  .topbar__list li:nth-child(3){display:none}
}
@media (max-width:640px){
  body{font-size:15px}
  .topbar .container{justify-content:center;min-height:auto;padding-top:6px;padding-bottom:6px}
  .topbar .btn{display:none}
  .topbar__list{gap:12px;justify-content:center}
  .hero{padding:40px 0 100px}
  .hero__cta .btn{width:100%}
  .quick{padding:22px}
  .quick__row,.form-grid,.grid--2,.grid--3,.grid--4,.steps{grid-template-columns:1fr}
  .trust{margin-top:-64px}
  .trust__grid{grid-template-columns:1fr 1fr}
  .trust__num{font-size:1.7rem}
  .trust__item{padding:20px 12px}
  .section{padding:52px 0}
  .svc{grid-template-columns:1fr}
  .svc__price{text-align:left}
  .doc--wide{grid-template-columns:1fr;text-align:center}
  .doc--wide .avatar{margin:0 auto}
  .branch__card{grid-template-columns:1fr}
  .branch__card .ph{min-height:160px}
  .slots{grid-template-columns:repeat(3,1fr)}
  .book__form{padding:22px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .wave{height:34px}
  .cta{padding:56px 0}
  .cta .btn{width:100%;margin:0 0 10px}
}