/* Song Hành Visa — layout: hồ sơ giấy tờ (dossier) — dải ngang nền màu, nội dung giữa tối đa 1120px */
/* Bảng màu riêng Song Hành: đỏ rượu vang (màu bìa hộ chiếu) + xám đá + cát. Không trùng Tâm An (xanh lá, hồng, vàng) và Khách Tới Tiệm (xanh navy, cam). */
:root{
  --navy:#7A1C34; --navy-2:#7A1C34; --gold:#7A1C34; --gold-soft:#F4ECE6;
  --sand:#E9D8C4; --slate:#5B6670; --btn-bg:#7A1C34; --btn-ink:#FFFFFF;
  --bg:#F7F4F2; --surface:#FFFFFF; --ink:#241A1D; --muted:#6B5F63; --line:#E7DFDB;
  --stamp:#3F4C5A; --ok:#7A1C34;
  --band:#5C1427; --band-ink:#FFFFFF; --band-muted:#DCC9CE;
  --font:"Inter", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --r:12px;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#170F12; --surface:#21171A; --ink:#F1E9EB; --muted:#BBA9AE; --line:#3A2A2F;
    --gold-soft:#3A2228; --navy:#EBD3BC; --navy-2:#F2E2D0; --gold:#EBD3BC; --stamp:#AFBBC8; --ok:#EBD3BC;
    --slate:#AEB8C2; --btn-bg:#E9D8C4; --btn-ink:#4E1022;
    --band:#2B0F18; --band-ink:#F6EEF0; --band-muted:#CDB5BC; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#170F12; --surface:#21171A; --ink:#F1E9EB; --muted:#BBA9AE; --line:#3A2A2F;
  --gold-soft:#3A2228; --navy:#EBD3BC; --navy-2:#F2E2D0; --gold:#EBD3BC; --stamp:#AFBBC8; --ok:#EBD3BC;
  --slate:#AEB8C2; --btn-bg:#E9D8C4; --btn-ink:#4E1022;
  --band:#2B0F18; --band-ink:#F6EEF0; --band-muted:#CDB5BC; color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65}
img{max-width:100%}
a{color:var(--navy-2)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px))}
h1,h2,h3{line-height:1.25;text-wrap:balance;margin:0}
h1{font-size:clamp(30px,5vw,48px);font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.3px}
h3{font-size:19px;font-weight:700}
p{margin:0}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:var(--gold)}
.lead{font-size:18px;color:var(--muted);max-width:62ch}
.muted{color:var(--muted)}
.small{font-size:14px}

/* header */
.top{position:sticky;top:env(safe-area-inset-top, 0px);z-index:20;background:var(--surface);border-bottom:1px solid var(--line)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top, 0px);z-index:21;background:var(--surface)}
.top .wrap{display:flex;align-items:center;gap:20px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand svg{flex:none}
.brand b{display:block;font-weight:800;font-size:18px;letter-spacing:.3px;line-height:1.1;color:var(--ink)}
.brand span{display:block;font-size:11px;font-weight:700;letter-spacing:4px;color:var(--slate)}
.nav{display:flex;gap:18px;margin-left:auto;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--muted);font-weight:600;font-size:15px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;border:2px solid transparent;cursor:pointer;white-space:nowrap}
.btn-gold{background:var(--btn-bg);color:var(--btn-ink)}
.band .btn-gold{background:var(--sand);color:#4E1022}
.btn-gold:hover{filter:brightness(1.05)}
.btn-line{border-color:currentColor;color:var(--navy-2);background:transparent}
.top .btn{padding:9px 16px}
@media (max-width:820px){.top .wrap{flex-wrap:wrap;row-gap:8px;padding-bottom:0}.top .btn{margin-left:auto}
  .nav{order:3;width:100%;margin-left:0;flex-wrap:nowrap;overflow-x:auto;gap:20px;padding-bottom:10px;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}.nav a{white-space:nowrap;font-size:14px}}

/* hero */
.hero{padding-block:56px 64px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero .text{display:flex;flex-direction:column;gap:18px;min-width:0}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
.trust{display:flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.trust span::before{content:"✓ ";color:var(--ok);font-weight:800}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}.hero{padding-block:36px 44px}}

/* dossier card (signature visual) */
.dossier{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 22px 18px;box-shadow:0 18px 40px -24px rgba(18,53,91,.45)}
.dossier .head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px dashed var(--line);padding-bottom:12px;margin-bottom:12px}
.dossier .head b{font-size:15px}
.dossier .head small{color:var(--muted);font-variant-numeric:tabular-nums}
.dossier ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.dossier li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.dossier li i{flex:none;width:20px;height:20px;border-radius:6px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-style:normal;font-weight:800;font-size:13px;margin-top:2px}
.stamp{position:absolute;right:18px;bottom:-14px;transform:rotate(-8deg);border:3px solid var(--stamp);color:var(--stamp);font-weight:800;font-size:13px;letter-spacing:1px;padding:6px 10px;border-radius:8px;background:var(--surface);text-transform:uppercase}

/* sections */
section{padding-block:56px}
.sec-head{display:flex;flex-direction:column;gap:10px;margin-bottom:28px;max-width:720px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (max-width:900px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;flex-direction:column;gap:12px;min-width:0}
.card .facts{display:grid;gap:6px;font-size:15px}
.card .facts div{display:grid;grid-template-columns:110px 1fr;gap:8px}
.card .facts dt,.card .facts span:first-child{color:var(--muted)}
.card a.more{margin-top:auto;font-weight:700;text-decoration:none}
.flag{font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--muted)}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:900px){.why{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.why{grid-template-columns:1fr}}
.why div{display:flex;flex-direction:column;gap:8px}
.why b{font-size:17px}

/* pricing */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:15px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:13px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);background:var(--bg)}
td.num{font-variant-numeric:tabular-nums;font-weight:700;white-space:nowrap}
tr:last-child td{border-bottom:none}
.note{margin-top:14px;display:grid;gap:6px;font-size:14px;color:var(--muted)}

/* steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.steps li{counter-increment:s;display:flex;flex-direction:column;gap:8px}
.steps li::before{content:counter(s);width:36px;height:36px;border-radius:50%;background:var(--navy);color:var(--surface);display:grid;place-items:center;font-weight:800}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* faq */
.faq{display:grid;gap:10px;max-width:860px}
details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px}
summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--gold);font-weight:800}
details[open] summary::after{content:"–"}
details p{margin-top:10px;color:var(--muted)}

/* band */
.band{background:var(--band);color:var(--band-ink)}
.band .wrap{padding-block:44px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.band p{color:var(--band-muted)}
.phone{font-size:26px;font-weight:800;letter-spacing:.5px;font-variant-numeric:tabular-nums;user-select:all}

/* article / country page */
.page-head{padding-block:44px 8px}
.page-head .wrap{display:flex;flex-direction:column;gap:14px}
.crumb{font-size:14px;color:var(--muted)}
.crumb a{color:var(--muted)}
.content{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;padding-block:24px 56px}
@media (max-width:900px){.content{grid-template-columns:1fr}}
.prose{min-width:0;max-width:72ch}
.prose h2{font-size:24px;margin:34px 0 12px}
.prose h3{margin:22px 0 8px}
.prose p,.prose ul,.prose ol{margin:0 0 14px}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin-bottom:6px}
.callout{background:var(--gold-soft);border-radius:var(--r);padding:16px 18px;margin:18px 0}
.side{display:flex;flex-direction:column;gap:16px}
.side .card{position:sticky;top:90px}
.src{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:28px}

/* footer */
footer{border-top:1px solid var(--line);background:var(--surface)}
footer .wrap{padding-block:36px;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px;font-size:14px;color:var(--muted)}
footer b{color:var(--ink)}
footer a{color:var(--muted);text-decoration:none}
footer ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px}
@media (max-width:820px){footer .wrap{grid-template-columns:1fr}}

/* floating contact */
.float{position:fixed;right:calc(16px + env(safe-area-inset-right, 0px));bottom:calc(16px + env(safe-area-inset-bottom, 0px));z-index:30;display:flex;flex-direction:column;gap:10px}
.float a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px;text-decoration:none;box-shadow:0 8px 20px -8px rgba(0,0,0,.4)}
.float .z{background:#0068FF}
.float .c{background:#7A1C34}
@media (max-width:820px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom, 0px))}
  .float{left:0;right:0;bottom:0;flex-direction:row;gap:0;background:var(--surface);border-top:1px solid var(--line);padding:8px max(16px, env(safe-area-inset-right, 0px)) calc(8px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px))}
  .float a{flex:1;width:auto;height:46px;border-radius:999px;font-size:15px;box-shadow:none;margin:0 4px}
}