:root{
  --bg:#f6f8f7;
  --surface:#ffffff;
  --soft:#edf6f2;
  --soft-blue:#eef4f7;
  --text:#172227;
  --muted:#68777d;
  --green:#0d6b58;
  --green-dark:#084b3f;
  --green-mid:#18836c;
  --blue:#315f7d;
  --line:#dce5e2;
  --shadow:0 12px 32px rgba(21,55,46,.07);
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.62;
}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(var(--max),calc(100% - 32px));margin:auto}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:850}
.brand:hover{text-decoration:none}
.logo{
  width:42px;height:42px;border-radius:13px;
  background:linear-gradient(145deg,var(--green),var(--green-mid));
  position:relative;box-shadow:0 7px 18px rgba(13,107,88,.18)
}
.logo:before,.logo:after{
  content:"";position:absolute;border-radius:50%;
  border:2px solid #fff;border-left-color:transparent;border-bottom-color:transparent;
  transform:rotate(-45deg)
}
.logo:before{width:21px;height:21px;left:9px;top:6px}
.logo:after{width:11px;height:11px;left:14px;top:11px}
.logo i{position:absolute;width:5px;height:5px;background:#fff;border-radius:50%;left:18.5px;bottom:8px}
.brand small{display:block;font-size:.65rem;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-top:-2px}
.nav{display:flex;align-items:center;gap:18px;font-size:.91rem;font-weight:650}
.nav a{color:#33454b}
.nav .cta{background:var(--green);color:#fff;padding:10px 15px;border-radius:10px}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 11px;font-size:1.15rem}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(118deg,#edf6f3 0%,#f8faf9 55%,#eef4f7 100%);
  border-bottom:1px solid var(--line);
  padding:52px 0 42px;
}
.hero:after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:54px;opacity:.65;pointer-events:none;
  background:
    linear-gradient(165deg,transparent 0 50%,#dceade 50% 57%,transparent 57%) 0 100%/230px 54px repeat-x;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{font-size:.78rem;font-weight:800;color:var(--green);text-transform:uppercase;letter-spacing:.08em}
h1{font-size:clamp(2.35rem,4.8vw,4.25rem);line-height:1.02;letter-spacing:-.05em;margin:.18em 0 .24em}
h2{font-size:clamp(1.55rem,3vw,2.28rem);line-height:1.18;letter-spacing:-.025em;margin:1.45em 0 .48em}
h3{font-size:1.18rem;line-height:1.28;margin:1em 0 .32em}
.lead{font-size:1.08rem;color:var(--muted);max-width:670px}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 16px;border-radius:10px;font-weight:800;border:1px solid var(--green);transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{background:var(--green);color:#fff;box-shadow:0 7px 18px rgba(13,107,88,.15)}
.btn.secondary{background:#fff;color:var(--green)}

.quick-card{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;
  box-shadow:var(--shadow)
}
.quick-card .eyebrow{color:var(--green);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.07em}
.quick-card h2{font-size:1.38rem;margin:.15em 0 .35em}
.quick-card > p{color:var(--muted);margin:.2em 0 1em}
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:15px 0 18px}
.tech{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--line);
  border-radius:13px;background:#fbfcfc
}
.tech-icon{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--soft);color:var(--green-dark);font-size:.77rem;font-weight:900
}
.tech strong{display:block;font-size:.88rem}
.tech span{display:block;color:var(--muted);font-size:.75rem}

/* compact trust */
.trust{background:#fff;border-bottom:1px solid var(--line)}
.trust-inner{display:flex;align-items:center;justify-content:center;gap:30px;min-height:58px;flex-wrap:wrap}
.trust-pill{display:flex;align-items:center;gap:7px;color:#425158;font-size:.84rem;font-weight:700}
.trust-dot{width:7px;height:7px;border-radius:50%;background:var(--green-mid)}

/* sections */
.section{padding:46px 0}
.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:20px}
.section-head h2{margin:.35em 0 .2em}
.section-head p{color:var(--muted);margin:0;max-width:650px}
.badge{display:inline-flex;background:#e5f3ee;color:var(--green-dark);padding:6px 10px;border-radius:999px;font-size:.76rem;font-weight:800}

/* 3 main routes */
.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.route{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 6px 18px rgba(21,55,46,.045);
  position:relative;overflow:hidden
}
.route:before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--green)}
.route:nth-child(2):before{background:var(--blue)}
.route:nth-child(3):before{background:#6d7f84}
.route-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.route-icon{
  width:44px;height:44px;border-radius:13px;background:var(--soft);display:grid;place-items:center;
  color:var(--green-dark);font-weight:900;font-size:.84rem
}
.route:nth-child(2) .route-icon{background:var(--soft-blue);color:var(--blue)}
.route:nth-child(3) .route-icon{background:#f1f3f3;color:#5b6c71}
.route p{color:var(--muted);margin:.45em 0 .85em}
.route-links{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0 15px}
.route-links span{
  display:inline-flex;padding:5px 8px;border-radius:8px;background:#f6f8f7;color:#53636a;font-size:.78rem;border:1px solid #e5ebe8
}
.route a.more{font-weight:800}

/* article highlights */
.article-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.article-card{
  border:1px solid var(--line);border-radius:17px;padding:19px;background:#fff;
  box-shadow:0 5px 15px rgba(21,55,46,.035)
}
.article-card .tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;font-weight:800;color:var(--green)}
.article-card h3{font-size:1.08rem;margin:.55em 0 .35em}
.article-card p{color:var(--muted);font-size:.89rem;margin:.3em 0 .8em}
.article-card a{font-size:.9rem;font-weight:800}

/* comparison */
.compare-wrap{
  background:linear-gradient(125deg,var(--green-dark),var(--green) 66%,#1b7d70);
  color:#fff;border-radius:23px;padding:30px 32px;display:grid;grid-template-columns:1.2fr .8fr;gap:26px;align-items:center;
  box-shadow:0 15px 38px rgba(8,75,63,.18)
}
.compare-wrap h2{color:#fff;margin:.1em 0 .3em}
.compare-wrap p{color:rgba(255,255,255,.82);margin:.4em 0 1em}
.compare-wrap .btn{background:#fff;color:var(--green-dark);border-color:#fff}
.compare-side{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:16px;padding:17px
}
.compare-side strong{display:block;margin-bottom:6px}
.compare-side span{display:block;color:rgba(255,255,255,.83);font-size:.86rem;line-height:1.8}
.compare-side small{display:block;color:rgba(255,255,255,.68);margin-top:10px}

/* Article pages */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start}
.article{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(24px,4vw,48px);
  box-shadow:0 8px 24px rgba(21,55,46,.05)
}
.article h1{font-size:clamp(2.05rem,4.4vw,3.35rem);line-height:1.06}
.article p,.article li{font-size:1.01rem}
.toc{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.toc strong{display:block;margin-bottom:9px}
.toc a{display:block;padding:5px 0;color:var(--muted)}
.breadcrumbs,.meta{font-size:.88rem;color:var(--muted)}
.meta{margin-top:-5px;margin-bottom:24px}
.notice{padding:17px 19px;background:#f1f7fb;border:1px solid #d8e5ed;border-radius:14px;margin:20px 0}
.notice strong{display:block}
.compare-box{padding:22px;background:#eff8f4;border:1px solid #cbe3da;border-radius:17px;margin:26px 0}
.placeholder{border:2px dashed #96b8ab;border-radius:15px;padding:30px;text-align:center;color:var(--muted);background:#fbfefd}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;margin:20px 0}
th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#f7faf9}
.checklist{list-style:none;padding-left:0}
.checklist li{position:relative;padding:6px 0 6px 28px}
.checklist li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}

/* Footer */
.footer{background:#102c27;color:#eaf2ef;margin-top:52px;padding:38px 0 21px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.footer a{color:#d6e8e3}
.footer .brand{color:#fff}
.footer .muted{color:#a7c0b8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:18px;margin-top:25px;color:#96aea7;font-size:.8rem}

@media(max-width:980px){
  .hero-grid,.compare-wrap,.article-wrap{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr 1fr}
  .toc{position:static}
}
@media(max-width:820px){
  .route-grid{grid-template-columns:1fr}
  .menu-btn{display:block}
  .nav{
    display:none;position:absolute;left:16px;right:16px;top:69px;background:#fff;border:1px solid var(--line);
    border-radius:14px;padding:14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)
  }
  .nav.open{display:flex}
}
@media(max-width:620px){
  .container{width:min(var(--max),calc(100% - 22px))}
  .article-grid,.footer-grid,.tech-grid{grid-template-columns:1fr}
  .hero{padding-top:38px}
  .trust-inner{gap:13px;padding:11px 0}
  .compare-wrap{padding:24px 20px}
  .article{padding:21px}
}