/* ================= RINGO — hệ thiết kế ================= */
:root{
  --leaf:#1E9E57;        /* xanh lá táo — thương hiệu chính */
  --leaf-deep:#15753F;   /* đậm hơn cho hover */
  --teal:#0E8C8C;        /* ngọc lam — phụ */
  --forest:#123227;      /* xanh rừng rất đậm — chữ đậm / footer */
  --ink:#1C2A22;         /* chữ thân */
  --muted:#586A60;       /* chữ phụ */
  --paper:#F3F6F1;       /* nền trang (ngả xanh nhạt) */
  --card:#FFFFFF;
  --soft:#E9F2EA;        /* dải nền xanh nhạt */
  --honey:#DE9B34;       /* điểm nhấn ấm (hiếm dùng — “quả ngọt”) */
  --line:#DCE6DC;
  --shadow:0 1px 2px rgba(18,50,39,.04),0 8px 30px rgba(18,50,39,.06);
  --radius:16px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--leaf-deep);text-decoration:none}
h1,h2,h3{font-family:"Fraunces","Lora",Georgia,serif;color:var(--forest);
  line-height:1.12;font-weight:600;letter-spacing:-.01em;margin:0}
p{margin:0 0 1rem}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.serif{font-family:"Fraunces","Lora",Georgia,serif}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:40;background:rgba(243,246,241,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:40px;height:40px}
.brand .bt{display:flex;flex-direction:column;line-height:1}
.brand .name{font-family:"Fraunces","Lora",serif;font-weight:600;font-size:1.35rem;color:var(--forest);letter-spacing:.02em}
.brand .tag{font-size:.72rem;color:var(--muted);margin-top:3px;letter-spacing:.01em}
.nav{display:flex;align-items:center;gap:26px}
.nav a.navlink{color:var(--ink);font-size:.95rem;font-weight:500}
.nav a.navlink:hover{color:var(--leaf-deep)}
.nav-cta{background:var(--leaf);color:#fff;padding:9px 18px;border-radius:999px;font-weight:600;font-size:.95rem}
.nav-cta:hover{background:var(--leaf-deep);color:#fff}
.menu-toggle{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:1rem;cursor:pointer;border:1.5px solid transparent;transition:transform .12s ease,background .15s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--leaf);color:#fff}
.btn-primary:hover{background:var(--leaf-deep);color:#fff}
.btn-ghost{background:transparent;color:var(--forest);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--leaf);color:var(--leaf-deep)}
.btn-zalo{background:#0068FF;color:#fff}.btn-fb{background:#1877F2;color:#fff}.btn-line{background:#06C755;color:#fff}
.btn-zalo:hover,.btn-fb:hover,.btn-line:hover{color:#fff;filter:brightness(.94)}

/* ---------- hero ---------- */
.hero{padding:64px 0 40px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--leaf-deep);
  font-weight:600;font-size:.92rem;margin-bottom:16px}
.kicker::before{content:"";width:20px;height:2px;background:var(--leaf);border-radius:2px}
.hero h1{font-size:clamp(2.15rem,5.2vw,3.4rem);font-weight:600}
.hero .lead{font-size:1.14rem;color:var(--muted);margin:20px 0 26px;max-width:36ch}
.hero .btn-row{display:flex;flex-wrap:wrap;gap:12px}
.chips{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:8px;font-size:.92rem;color:var(--ink)}
.chip svg{flex:0 0 auto}
.hero-visual{position:relative;display:flex;justify-content:center}
.bloom{position:absolute;inset:-10% -10% auto auto;width:78%;aspect-ratio:1;
  background:radial-gradient(circle at 50% 45%,rgba(30,158,87,.20),rgba(14,140,140,.10) 45%,transparent 70%);z-index:0}
.emblem{position:relative;z-index:1;width:min(360px,80%)}

/* ---------- bands / sections ---------- */
.band{padding:64px 0}
.band-soft{background:var(--soft)}
.band-forest{background:var(--forest);color:#DCEBDD}
.sec-head{max-width:60ch;margin-bottom:36px}
.sec-head h2{font-size:clamp(1.6rem,3.4vw,2.15rem)}
.sec-head p{color:var(--muted);margin-top:12px;font-size:1.06rem}
.band-forest .sec-head h2{color:#fff}.band-forest .sec-head p{color:#B7CDBE}

/* ---------- services grid ---------- */
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.svc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;display:flex;flex-direction:column;gap:10px;position:relative;transition:border-color .15s ease,transform .15s ease}
.svc-card:hover{border-color:var(--leaf);transform:translateY(-2px)}
.svc-card .ic{width:46px;height:46px;border-radius:12px;background:var(--soft);color:var(--leaf-deep);
  display:flex;align-items:center;justify-content:center;font-size:1.4rem}
.svc-card h3{font-size:1.25rem}
.svc-card p{color:var(--muted);margin:0;font-size:.98rem;flex:1}
.svc-card .more{color:var(--leaf-deep);font-weight:600;font-size:.95rem;margin-top:4px}

/* ---------- steps (sequence) ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.steps li::before{counter-increment:s;content:counter(s);display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;background:var(--forest);color:#fff;
  font-family:"Fraunces","Lora",serif;font-weight:600;font-size:1.1rem;margin-bottom:14px}
.steps h3{font-size:1.12rem;margin-bottom:6px}
.steps p{color:var(--muted);font-size:.96rem;margin:0}

/* ---------- reasons ---------- */
.reasons{display:grid;grid-template-columns:1fr 1fr;gap:16px 32px}
.reason{display:flex;gap:14px;align-items:flex-start}
.reason .tick{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--soft);color:var(--leaf-deep);
  display:flex;align-items:center;justify-content:center;margin-top:3px}
.reason b{color:var(--forest)}
.reason p{margin:2px 0 0;color:var(--muted);font-size:.97rem}

/* ---------- assurance strip ---------- */
.assure{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.assure .item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.assure h3{font-size:1.05rem;margin-bottom:6px}
.assure p{margin:0;color:var(--muted);font-size:.95rem}

/* ---------- generic content (service pages) ---------- */
.prose{max-width:70ch}
.prose p{color:var(--ink)}
.ilist{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.ilist li{position:relative;padding-left:30px;color:var(--ink)}
.ilist li::before{content:"";position:absolute;left:4px;top:11px;width:9px;height:9px;border-radius:50%;
  background:var(--leaf);box-shadow:0 0 0 4px rgba(30,158,87,.14)}
.note{background:var(--soft);border-left:4px solid var(--leaf);border-radius:10px;padding:16px 18px;margin:18px 0;color:var(--ink)}
.fineprint{color:var(--muted);font-size:.9rem;font-style:italic}
details.faq{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin-bottom:12px}
details.faq summary{cursor:pointer;padding:14px 0;font-weight:600;color:var(--forest);list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--leaf);font-weight:700}
details.faq[open] summary::after{content:"–"}
details.faq p{color:var(--muted);margin:0 0 14px}
.back{display:inline-block;color:var(--muted);font-size:.95rem;margin-bottom:14px}
.back:hover{color:var(--leaf-deep)}

/* ---------- final CTA ---------- */
.cta-band{background:var(--forest);border-radius:24px;padding:48px 32px;text-align:center;color:#fff}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3.4vw,2.2rem)}
.cta-band p{color:#B7CDBE;max-width:48ch;margin:12px auto 24px}
.contact-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- footer ---------- */
.site-foot{background:var(--forest);color:#A9C2B1;padding:52px 0 90px;margin-top:8px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.site-foot .fbrand{font-family:"Fraunces","Lora",serif;color:#fff;font-size:1.4rem}
.site-foot h4{color:#fff;font-size:.95rem;margin:0 0 12px;font-family:"Be Vietnam Pro",sans-serif;font-weight:600}
.site-foot a{color:#A9C2B1;display:block;margin-bottom:9px;font-size:.95rem}
.site-foot a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:32px;padding-top:20px;color:#8AA492;font-size:.88rem}

/* ---------- mobile sticky ---------- */
.mobile-bar{display:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-visual{order:-1;max-width:300px;margin:0 auto}
  .hero .lead{max-width:none}
}
@media(max-width:760px){
  body{font-size:16px}
  .nav .navlink{display:none}
  .steps,.svc-grid,.reasons,.assure,.foot-grid{grid-template-columns:1fr}
  .band{padding:48px 0}
  .hero{padding:40px 0 24px}
  .cta-band{padding:36px 20px}
  .mobile-bar{display:block;position:fixed;left:0;right:0;bottom:0;z-index:50;padding:10px 14px;
    background:rgba(243,246,241,.94);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
  .mobile-bar a{display:block;text-align:center;background:var(--leaf);color:#fff;padding:14px;border-radius:12px;font-weight:600}
  .site-foot{padding-bottom:96px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
:focus-visible{outline:2.5px solid var(--teal);outline-offset:2px;border-radius:4px}