/* Shared UI system: simpleswapiolegitreview.com - petrol/cobalt, ice-blue canvas */
:root{
  --ink:#16232a;--ink2:#4c6169;--ink3:#7e9298;
  --surface:#e7f2f2;
  --card:#fbfaf7;
  --card2:#eef7f6;
  --cobalt:#0c7f9e;--cobalt-dark:#0a6883;
  --petrol:#0d3b3e;--petrol-deep:#082729;
  --ice:#dcecec;
  --line:#cfe0e0;
  --radius:14px;--shadow:0 10px 28px -18px rgba(10,45,50,.2);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,sans-serif;color:var(--ink);background:var(--surface);line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Poppins',system-ui,sans-serif;line-height:1.26;letter-spacing:-.01em;margin:0;color:var(--ink);font-weight:600}
a{color:var(--cobalt);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

h1{font-size:clamp(1.8rem,3.3vw,2.35rem);font-weight:700;margin:0 0 12px}
h2{font-size:clamp(1.2rem,2.1vw,1.45rem);margin:0 0 8px}
h3{font-size:.98rem;margin:0 0 4px}
.lede{font-size:1.02rem;color:var(--ink2);line-height:1.6;margin:0}
.supporting{font-size:.9rem;color:var(--ink2);line-height:1.55;margin:0}
.label{font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink3)}

.ti{width:18px;height:18px;display:inline-block;background-color:currentColor;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center;-webkit-mask-size:contain;mask-size:contain;flex:none}

.btn{display:inline-flex;align-items:center;gap:8px;background:var(--cobalt);color:#fff;font-weight:600;padding:11px 20px;border-radius:999px;border:none;cursor:pointer;font-size:.9rem;font-family:'Inter',sans-serif}
.btn:hover{text-decoration:none;background:var(--cobalt-dark)}
.btn.ghost{background:var(--card);color:var(--cobalt);border:1.4px solid var(--line)}
.btn.ghost:hover{background:var(--card2)}
.btn.onlight{background:#fff;color:var(--petrol)}
.pill-link{display:inline-flex;align-items:center;gap:6px;border:1.3px solid var(--line);color:var(--ink2);font-weight:600;font-size:.83rem;padding:8px 14px;border-radius:999px}
.pill-link:hover{border-color:var(--cobalt);color:var(--cobalt);text-decoration:none;background:var(--card2)}
.pill-link .ti{width:12px;height:12px}

.nav{position:sticky;top:0;z-index:50;background:rgba(231,242,242,.9);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.brand{display:flex;align-items:center;gap:10px}
.brand .mark{width:31px;height:31px;border-radius:9px;background:var(--cobalt);display:grid;place-items:center;color:#fff;flex:none}
.brand .mark .ti{width:17px;height:17px}
.brandtext{font-weight:600;font-size:.98rem;color:var(--ink);font-family:'Poppins',system-ui,sans-serif}
.navlinks{display:flex;gap:20px;align-items:center}
.navlinks a{color:var(--ink2);font-weight:500;font-size:.88rem}
.navlinks a:hover{color:var(--cobalt);text-decoration:none}
.navlinks a.on{color:var(--cobalt);font-weight:600}
.navcta{display:flex;align-items:center;gap:16px}
@media(max-width:760px){.navlinks{display:none}}

section{padding:46px 0}
.sec-head{max-width:64ch;margin:0 0 18px}
.sec-head p{color:var(--ink2);font-size:.92rem;margin:5px 0 0}

/* shared: icon-node flow diagram */
.flow{display:flex;align-items:flex-start;justify-content:space-between;gap:4px}
@media(max-width:820px){.flow{flex-direction:column;gap:16px}}
.flow-node{display:flex;flex-direction:column;align-items:center;text-align:center;gap:9px;flex:1;min-width:0;padding:0 4px}
@media(max-width:820px){.flow-node{flex-direction:row;text-align:left;align-items:center;padding:0}}
.flow-node .ti-tile{width:50px;height:50px;border-radius:13px;background:var(--card);border:1px solid var(--line);color:var(--cobalt);display:grid;place-items:center;flex:none}
.flow-node .ti-tile .ti{width:24px;height:24px}
.flow-node h3{margin:0 0 4px;font-size:.92rem}
.flow-node p{margin:0;color:var(--ink2);font-size:.82rem;line-height:1.45}
.flow-arrow{color:var(--ink3);flex:none;width:18px;height:18px;margin-top:16px}
@media(max-width:820px){.flow-arrow{transform:rotate(90deg);margin:0 0 0 20px}}

.cta-block{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-block h2{margin:0 0 4px}
.cta-block p{margin:0;color:var(--ink2);font-size:.9rem}

/* ---------- Verdict card: authoritative, distinct from plain text ---------- */
.verdict-card{background:linear-gradient(150deg,var(--petrol) 0%,var(--petrol-deep) 100%);border-radius:20px;padding:34px 36px;display:flex;gap:22px;align-items:flex-start}
@media(max-width:640px){.verdict-card{flex-direction:column;align-items:center;text-align:center;padding:28px 26px}}
.verdict-badge{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;display:grid;place-items:center;flex:none}
.verdict-badge .ti{width:26px;height:26px}
.verdict-card h2{color:#fff;margin:0 0 10px}
.verdict-card p{color:#c9dcdc;font-size:.96rem;line-height:1.65;margin:0;max-width:72ch}
.verdict-card strong{color:#fff}

/* ---------- Loyalty tier cards ---------- */
.tier-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:760px){.tier-row{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.tier-row{grid-template-columns:1fr}}
.tier{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--line);border-radius:14px;padding:20px 18px}
.tier-ic{width:38px;height:38px;border-radius:10px;background:var(--card2);color:var(--cobalt);display:grid;place-items:center;margin-bottom:12px}
.tier-ic .ti{width:19px;height:19px}
.tier-name{font-family:'Poppins',system-ui,sans-serif;font-weight:700;font-size:1rem;color:var(--ink)}
.tier-desc{font-size:.84rem;color:var(--ink2);margin-top:6px;line-height:1.5}
.tier.bronze{border-top-color:#b8763e}
.tier.silver{border-top-color:#8a95a6}
.tier.gold{border-top-color:#c9972e}
.tier.platinum{border-top-color:var(--cobalt);background:var(--petrol)}
.tier.platinum .tier-ic{background:rgba(255,255,255,.12);color:#fff}
.tier.platinum .tier-name{color:#fff}
.tier.platinum .tier-desc{color:#c9dcdc}

/* ---------- Invite Friends: 3-step flow ---------- */
.invite-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:760px){.invite-steps{grid-template-columns:1fr}}
.invite-step{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;position:relative}
.invite-num{position:absolute;top:14px;right:16px;font-family:'Poppins',system-ui,sans-serif;font-weight:700;font-size:1.4rem;color:var(--card2)}
.invite-ic{width:38px;height:38px;border-radius:10px;background:var(--card2);color:var(--cobalt);display:grid;place-items:center;margin-bottom:12px}
.invite-ic .ti{width:19px;height:19px}
.invite-step h3{font-size:.94rem;margin:0 0 6px}
.invite-step p{margin:0;font-size:.85rem;color:var(--ink2);line-height:1.5}

/* ---------- Ecosystem: real site sections, linked ---------- */
.eco-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:820px){.eco-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.eco-grid{grid-template-columns:1fr}}
.eco-card{display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.eco-card:hover{border-color:var(--cobalt);text-decoration:none}
.eco-ic{width:36px;height:36px;border-radius:10px;background:var(--card2);color:var(--cobalt);display:grid;place-items:center}
.eco-ic .ti{width:18px;height:18px}
.eco-card h3{font-size:.92rem;color:var(--ink);margin:0}
.eco-card p{margin:0;font-size:.8rem;color:var(--ink2);line-height:1.4}

footer{background:linear-gradient(150deg,var(--petrol) 0%,var(--petrol-deep) 100%);color:#c9dcdc;padding:36px 0 22px;margin-top:6px}
.foot-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-bottom:20px}
footer .brand .mark{background:rgba(255,255,255,.14)}
footer .brandtext{color:#fff}
footer .navlinks a{color:#c9dcdc;font-weight:500}
footer .navlinks a:hover{color:#fff}
.foot-note{margin:0;font-size:.83rem;color:#a9c4c4;max-width:60ch;line-height:1.6}
.foot-note a{color:#e2f0f0;text-decoration:underline}
.fnote{border-top:1px solid rgba(255,255,255,.14);margin-top:16px;padding-top:12px;font-size:.76rem;color:#7fa0a0}