:root{
  --gold-200:#f2e2b8; --gold-300:#e6c98a; --gold-400:#d8ae64; --gold-500:#c69a4c;
  --rose-400:#e2907b; --cream-50:#f4ecd9; --cream-100:#ece0c1; --paper:#efe4c8;
  --ink-900:#241f13; --ink-700:#40331d; --ink-500:#6b5a3c;
  --green:#0F3327; --green-hover:#163F30;
  --line:rgba(198,154,76,0.32); --err:#b3453f;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',sans-serif;background:var(--cream-50);color:var(--ink-900);
  -webkit-font-smoothing:antialiased;line-height:1.7;font-size:17.5px}
h1,h2,h3,.serif{font-family:'Lora',serif;font-weight:500}
img{max-width:100%;display:block}
a{color:inherit}
button,input,select,textarea{font-family:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:640px;margin:0 auto;padding:0 24px}
section{padding:94px 0}

/* header: nhẹ, không nút đăng ký */
header{position:sticky;top:0;z-index:40;background:rgba(244,236,217,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.hd{max-width:1120px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{font-family:'Lora',serif;font-size:21px;font-weight:700;text-decoration:none}
nav{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
nav a{padding:7px 14px;border-radius:100px;font-size:14.5px;font-weight:600;color:var(--ink-700);text-decoration:none}
nav a:hover{background:rgba(15,51,39,.07)}
nav a.on{background:rgba(15,51,39,.1)}

.btn{display:inline-block;background:var(--green);color:var(--gold-200);border:none;border-radius:100px;
  padding:16px 34px;font-size:16px;font-weight:600;letter-spacing:.3px;text-decoration:none;transition:background .2s}
.btn:hover{background:var(--green-hover)}
.small{font-size:14.5px;color:var(--ink-500)}
.eyebrow{font-size:13px;letter-spacing:1.2px;text-transform:uppercase;color:var(--gold-500);font-weight:600;margin-bottom:18px}

/* hero */
.hero{position:relative;padding:0;min-height:clamp(440px,60vh,560px);display:flex;align-items:center;overflow:visible;overflow-x:clip}
.hero-img{position:absolute;right:max(0px,calc((100vw - 1120px)/2 - 24px));bottom:-37px;height:103%;aspect-ratio:1122/1402;
  background:url(hero-1400.webp?v=3) center/100% 100% no-repeat}
.hero-copy{position:relative;z-index:2;width:60%;padding:44px 24px 44px max(24px,calc((100vw - 1120px)/2 + 24px))}
.hero + section{padding-top:64px}
.hero h1{font-size:clamp(34px,4.5vw,64px);line-height:1.1;letter-spacing:.5px;margin-bottom:18px}
@media(min-width:1100px){.hero h1{white-space:nowrap}}
.hero .tag{font-family:'Lora',serif;font-style:italic;font-size:clamp(22px,2.4vw,30px);color:var(--ink-700);margin-bottom:30px}
.hero .lead{max-width:28em;color:var(--ink-700);margin-bottom:38px}
.hero .btn{margin-bottom:14px}

h2.t{font-size:clamp(28px,3.4vw,40px);line-height:1.25;margin-bottom:34px}
.prose p{margin-bottom:18px;max-width:34em}
.prose p.big{font-family:'Lora',serif;font-size:21px;line-height:1.65}
.hr{width:48px;height:1px;background:var(--gold-400);margin:0 0 38px}

/* màn 2 */
.lines p{font-family:'Lora',serif;font-size:21px;line-height:1.4;margin-bottom:16px;max-width:30em}
.lines p.close{font-style:italic;color:var(--ink-700);margin-top:24px;margin-bottom:0}

/* màn 3 */
.own{list-style:none;max-width:34em}
.own li{padding:18px 0;border-bottom:1px solid var(--line);font-family:'Lora',serif;font-size:20px}
.own li:last-child{border:none}

/* màn 4 */
.steps{display:grid;grid-template-columns:1fr 1fr 1.15fr 1fr;gap:32px;position:relative;margin-bottom:40px}
.steps::before{content:"";position:absolute;left:0;right:0;top:19px;height:1px;background:var(--line)}
.step{position:relative}
.step .dot{width:11px;height:11px;border-radius:50%;background:var(--gold-500);margin:14px 0 22px;box-shadow:0 0 0 8px var(--cream-50)}
.step h3{font-size:22px;letter-spacing:2px;margin-bottom:10px}
.step p{color:var(--ink-700);font-size:16.5px}
.step.optional h3{color:var(--ink-500)}
.step.optional .dot{background:var(--cream-50);border:1.5px solid var(--gold-500);width:11px;height:11px}
.step.optional .tagopt{display:inline-block;font-family:'Be Vietnam Pro';font-size:12.5px;letter-spacing:.3px;color:var(--ink-500);border:1px solid var(--line);border-radius:100px;padding:1px 10px;margin-bottom:8px}
.step em{color:var(--ink-500);font-style:normal}
.opt{max-width:36em;color:var(--ink-500);border-left:2px solid var(--line);padding-left:20px;font-size:16px}
.opt b{color:var(--ink-700)}

/* màn 5: bản phản chiếu */
.refl-wrap{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.paper{background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:34px 34px 30px;
  box-shadow:0 14px 34px rgba(60,45,20,.13),0 2px 5px rgba(60,45,20,.08);position:relative}
.paper h4{font-family:'Be Vietnam Pro';font-size:12px;letter-spacing:2.4px;color:var(--gold-500);font-weight:700;margin:0 0 14px}
.paper h4+ .row{margin-top:0}
.paper .row{font-family:'Lora',serif;font-size:16px;line-height:1.6;margin-bottom:14px;color:var(--ink-900)}
.paper .row span{display:block;font-family:'Be Vietnam Pro';font-size:12.5px;color:var(--ink-500);margin-bottom:2px}
.paper .gap{height:18px}
.paper .label{position:absolute;bottom:-34px;left:4px;font-size:13px;color:var(--ink-500);font-style:italic}

/* màn 6, 7 */
.priv li{list-style:none;padding:12px 0 12px 22px;max-width:34em}
.priv li::before{content:"";display:inline-block;width:12px;height:2px;margin-left:-22px;margin-right:10px;background:var(--gold-500);border-radius:1px}
a.arrow{font-weight:600;color:var(--green);text-decoration:none;border-bottom:1px solid var(--gold-400);padding-bottom:2px}
.who{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.who .name{font-family:'Lora',serif;font-size:26px;margin-bottom:4px}
.who .deg{color:var(--ink-500);margin-bottom:22px}

/* màn 8 */
.price{font-family:'Lora',serif;font-size:clamp(44px,6vw,64px);line-height:1;margin-bottom:12px}
.price small{font-size:.38em;color:var(--ink-500);font-family:'Be Vietnam Pro';letter-spacing:0;margin-left:8px}

/* FAQ */
details{border-bottom:1px solid var(--line);max-width:40em}
summary{list-style:none;cursor:pointer;padding:20px 36px 20px 0;font-family:'Lora',serif;font-size:19px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:18px;font-size:24px;color:var(--gold-500);font-weight:300}
details[open] summary::after{content:"–"}
details p{padding:0 0 22px;color:var(--ink-700);font-size:16.5px;max-width:34em}

/* form */
.form{background:rgba(236,224,193,.45);border:1px solid var(--line);border-radius:14px;padding:38px 34px;max-width:none}
.field{margin-bottom:26px}
.field>label,.field>.q{display:block;font-family:'Lora',serif;font-size:18px;margin-bottom:10px}
.field>label em,.field>.q em{font-family:'Be Vietnam Pro';font-style:normal;font-size:14px;color:var(--ink-500)}
input[type=text],input[type=tel],input[type=email]{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:10px;background:#fbf7ea;font-size:16px;color:var(--ink-900)}
input:focus{outline:2px solid var(--gold-400);outline-offset:1px}
.opt-row{display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:16.5px;cursor:pointer}
.opt-row input{margin-top:6px;accent-color:var(--green);flex:none}
.consent{font-size:14px;color:var(--ink-500);background:#f8f1dc;border-radius:8px;padding:12px 14px;margin:6px 0 0 26px}
.err{display:none;color:var(--err);font-size:14px;margin-top:6px}
.field.bad:not(#kenhBox) .err{display:block}
.divider{height:1px;background:var(--line);margin:30px 0}
.cond{display:none}
.cond.show{display:block}
.preview-note{background:#fff3c4;border:1px dashed #c69a4c;border-radius:8px;padding:10px 14px;font-size:14px;color:#5a4410;margin-bottom:24px}

.closing{text-align:center}
.closing h2{font-size:clamp(32px,4.4vw,52px);margin-bottom:36px}
footer{border-top:1px solid var(--line);padding:46px 0 60px;font-size:14.5px;color:var(--ink-500)}
footer p{max-width:46em;margin-bottom:10px}
footer a{color:var(--ink-700)}

/* ô Mây cần tự điền (chỉ trong bản xem trước) */
.todo{background:#fff3c4;border:1px dashed #c69a4c;border-radius:5px;padding:1px 7px;font-size:.88em;color:#5a4410;font-family:'Be Vietnam Pro',sans-serif;font-style:normal}

@media(max-width:820px){
  body{font-size:17px}
  section{padding:64px 0}
  nav a{padding:6px 10px;font-size:13.5px}
  .hd{flex-direction:column;align-items:flex-start;gap:8px}
  nav{justify-content:flex-start}
  .hero{display:block;min-height:0}
  .hero-copy{width:100%;padding:44px 24px 0}
  .hero-img{position:relative;right:auto;bottom:auto;height:92vw;max-height:520px;width:auto;margin:-6px auto 0;
    background-image:url(hero-800.webp?v=3)}
  .steps{grid-template-columns:1fr;gap:6px}
  .hero h1{font-size:clamp(34px,10vw,48px)}
  header{position:static}
  nav a{padding:10px 14px;font-size:15px;min-height:44px;display:inline-flex;align-items:center}
  .opt-row{padding:12px 0;font-size:17px}
  .field>label,.field>.q,legend{font-size:19px}
  input[type=text],input[type=tel],input[type=email]{padding:15px 16px;font-size:17px;min-height:50px}
  .consent{font-size:16px;padding:16px}
  .btn{display:block;text-align:center;width:100%;padding:18px 24px}
  .hero .btn{width:auto;display:inline-block}
  .listen-opt{margin:0 0 14px 34px}
  .steps::before{left:5px;right:auto;top:0;bottom:0;width:1px;height:auto}
  .step{padding-left:34px;padding-bottom:26px}
  .step .dot{position:absolute;left:0;top:8px;margin:0;box-shadow:0 0 0 6px var(--cream-50)}
  .refl-wrap{grid-template-columns:1fr;gap:44px}
  .who{grid-template-columns:1fr;gap:14px}
  .who h2.t{margin-bottom:18px}
  .who .deg{margin-bottom:0}
  .form{padding:28px 20px}
}

/* focus, lỗi, consent */
:focus-visible{outline:3px solid var(--gold-500);outline-offset:3px;border-radius:4px}
input[type=text]:focus-visible,input[type=tel]:focus-visible,input[type=email]:focus-visible{outline:3px solid var(--gold-500);outline-offset:1px}
.opt-row input[type=radio],.opt-row input[type=checkbox]{width:22px;height:22px;margin-top:5px}
.opt-row{min-height:44px;align-items:flex-start}
input.bad-input{border-color:var(--err);box-shadow:0 0 0 1px var(--err)}
.errsum{display:none;background:#fbe9e5;border:1px solid var(--err);color:#7d2b26;border-radius:10px;padding:14px 16px;margin-bottom:26px;font-size:16px}
.errsum.show{display:block}
.errsum a{color:#7d2b26;font-weight:600}
fieldset{border:none;padding:0;margin:0}
legend{display:block;font-family:'Lora',serif;font-size:18px;margin-bottom:10px;padding:0}
.consent{margin-left:0;margin-top:10px;padding:16px 18px;font-size:15.5px;line-height:1.65;color:var(--ink-700)}
.consent ul{list-style:none;margin:8px 0 10px}
.consent li{position:relative;padding:3px 0 3px 18px}
.consent li::before{content:"";position:absolute;left:0;top:14px;width:8px;height:1px;background:var(--gold-500)}
.consent a{color:var(--green);font-weight:600}
.consent .free{font-weight:600;color:var(--ink-900)}
.sub-note{font-size:14.5px;color:var(--ink-500);margin:-4px 0 8px 34px}
.btn[disabled]{opacity:.6}

.listen-opt{border:1px dashed var(--gold-500);border-radius:10px;padding:12px 14px;font-size:15.5px;color:var(--ink-700);background:var(--cream-50);align-self:start;position:relative;z-index:1}
.listen-opt .tagopt{display:block;font-size:12.5px;color:var(--ink-500);margin-bottom:4px;border:none;padding:0}
.listen-opt b{display:block;font-family:'Lora',serif;font-size:16px;letter-spacing:1.5px;margin-bottom:4px;color:var(--ink-900)}
.listen-opt span:last-child{display:block}

.contact-box{margin-top:44px;padding:22px 24px;border:1px solid var(--line);border-radius:12px;background:rgba(236,224,193,.35);max-width:40em}
.contact-box h3{font-size:18px;margin-bottom:10px}
.contact-box p{margin-bottom:10px;font-size:16.5px}
.lines .eyebrow{margin-bottom:22px}

.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.sendstate{display:none;margin:0 0 18px;padding:12px 14px;border-radius:10px;font-size:16px;line-height:1.6}
.sendstate.busy{display:block;background:#f1ead2;border:1px solid var(--line);color:var(--ink-700)}
.sendstate.error{display:block;background:#fbe9e5;border:1px solid var(--err);color:#7d2b26}

/* minh họa góc phòng lắng nghe làm nền mờ sau khối chữ mở đầu: không thêm chiều cao, không khối riêng */
.hero-bg{position:absolute;left:calc(max(24px,calc((100vw - 1120px)/2 + 24px)) - 110px);bottom:0;width:700px;height:100%;z-index:-1;opacity:.18;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 3%,#000 94%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 3%,#000 94%,transparent 100%)}
.hero-img{z-index:3;pointer-events:none}
@media(max-width:820px){.hero-bg{left:0;width:100%}}

/* form: một cột giữa, rộng ~640px, tiêu đề + đoạn lưu dữ liệu + form cùng một trục */
#dang-ky .wrap{max-width:688px}
#dang-ky h2.t,#dang-ky .wrap > p{text-align:center}
#dang-ky .wrap > p{max-width:34em;margin:0 auto 22px}
#dang-ky .preview-note{max-width:none}

/* dòng phụ dưới nút: trên điện thoại tách thành hai dòng gọn thay vì để "nói gì" lẻ loi */
@media(max-width:820px){
  .hero-meta span{display:block}
  .hero-meta .dot{display:none}
}

/* Lối quay lại: vùng chạm rõ, không ảnh/viền/bóng. */
.return-link{display:inline-flex;align-items:center;min-height:44px;font-family:'Be Vietnam Pro',sans-serif;font-size:15px;line-height:1.3;color:var(--ink-700);background:none;border:0;padding:0;text-decoration:none;cursor:pointer}
.return-link:hover{text-decoration:underline}
.return-link:focus-visible{outline:2px solid var(--ink-700);outline-offset:3px}
.return-strip{display:flex;align-items:center;gap:12px;min-height:44px;padding-top:2px;padding-bottom:2px}
.return-strip[hidden]{display:none}
.return-strip .return-link{flex:0 1 auto;text-align:left}
.return-strip small{flex:1;min-width:0;font-size:12px;line-height:1.3;color:var(--ink-700)}

/* Ba nhịp chuyển nhẹ giữa phần chia sẻ, quyền lựa chọn và Bản phản chiếu. */
.gentle-start{padding-bottom:40px}
.gentle-section{padding-top:40px;padding-bottom:40px}
.leaf-divider{height:36px;display:flex;align-items:center;justify-content:center;color:#7f9a82;opacity:.65;pointer-events:none}
.leaf-divider svg{display:block;width:180px;height:36px;max-width:60vw}
.paper .row{font-size:18px;font-weight:500}
.paper .row span{font-size:14.5px;font-weight:500;color:var(--ink-700)}
.paper h4{font-size:14px}
@media(max-width:820px){
  .gentle-start{padding-bottom:28px}
  .gentle-section{padding-top:28px;padding-bottom:36px}
  .paper{padding:28px 24px 30px}
}
/* QR cốc trà: dùng nguyên ảnh Mây cung cấp, không cắt hay vẽ lại mã. */
.tea-payment{margin:26px 0 34px;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tea-payment h3{font-size:23px;margin-bottom:8px}
.tea-payment img{width:min(100%,320px);height:auto;margin:20px auto}
.tea-payment p{margin-bottom:12px}
.tea-payment .tea-payment-note{margin-top:16px;line-height:1.65}
.tea-payment a{display:inline-flex;align-items:center;min-height:44px}
/* Chân trang xanh mint hòa với nền ảnh QR MB. */
.closing{background:linear-gradient(180deg,var(--cream-50) 0%,#effcfc 100%)}
.closing + footer{background:#effcfc;border-top-color:rgba(47,90,70,.16)}
/* Thanh toán: chữ trái, ảnh phải; điện thoại chỉ hiển thị ô mã vuông. */
.tea-layout{max-width:1000px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:center}
.tea-copy{min-width:0}
.tea-qr img{width:100%;height:auto;display:block}
@media(max-width:820px){
  .tea-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .tea-copy{display:contents}
  .tea-layout .t{margin-bottom:0}
  .tea-layout .price{margin-bottom:0}
  .tea-payment{margin:0;padding:20px 0}
  .tea-qr{grid-row:5;width:260px;max-width:100%;margin:0 auto;padding:12px;background:#fff}
  .tea-qr-frame{position:relative;aspect-ratio:1;overflow:hidden}
  .tea-qr img{position:absolute;width:152.65625%;max-width:none;height:auto;left:-26.25%;top:-91.875%}
}
@media(max-width:820px){.tea-qr-frame{background:#fff url('/assets/images/qr-thanh-toan.png?v=4') center 41.76136% / 152.65625% auto no-repeat}.tea-qr img{position:static;width:100%;height:100%;opacity:0}}

/* Hòa mép nền ảnh MB vào nền kem; không phủ màu lên vùng mã QR. */
@media(min-width:821px){
  .tea-qr-frame{position:relative}
  .tea-qr-frame::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,var(--cream-50) 0%,transparent 14%,transparent 65%,var(--cream-50) 100%),linear-gradient(90deg,var(--cream-50) 0%,transparent 12%,transparent 88%,var(--cream-50) 100%)}
}
/* Tách hai nhóm lựa chọn bắt buộc để người đọc không bỏ sót. */
fieldset.choice-section{min-width:0;margin:28px 0;padding:18px 20px 12px;border:1px solid rgba(18,61,46,.25);border-radius:12px;background:rgba(255,255,255,.38)}
.choice-section legend{max-width:100%;padding:0 8px;font-family:'Be Vietnam Pro',sans-serif;font-size:19px;font-weight:700;line-height:1.45;color:var(--green);margin-bottom:0}
.choice-section .choice-hint{font-size:14px;line-height:1.5;color:var(--ink-700);margin:0 0 12px}
.choice-section .opt-row{min-height:44px}
@media(max-width:600px){fieldset.choice-section{padding:14px 12px 10px}.choice-section legend{font-size:18px}}