:root{
  --blue:#0f75bc; --blue-dark:#0a5a92; --blue-soft:#e8f2fa; --navy:#16273f;
  --ink:#1f2d3d; --muted:#647588; --border:#d9e1ea; --bg:#f4f7fa;
  --ok:#1f8a4c; --bad:#c0392b; --gold:#c99a2e;
}
*{ margin:0; padding:0; box-sizing:border-box; }
body{ font-family:Pretendard,-apple-system,sans-serif; color:var(--ink);
  background:var(--bg); line-height:1.6; -webkit-font-smoothing:antialiased; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; }

/* ===== navbar ===== */
.nav{ position:sticky; top:0; z-index:100; background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px); border-bottom:1px solid var(--border); }
.nav-in{ max-width:1180px; margin:0 auto; height:66px; display:flex; align-items:center;
  gap:8px; padding:0 24px; }
.logo{ display:flex; align-items:center; gap:10px; font-size:20px; font-weight:800;
  letter-spacing:-.5px; color:var(--navy); }
.logo em{ color:var(--blue); font-style:normal; }
.logo svg{ width:32px; height:32px; }
.nav-menu{ display:flex; gap:4px; margin-left:20px; }
.nav-menu a{ padding:9px 15px; font-size:15px; font-weight:600; color:#465a70;
  border-radius:7px; }
.nav-menu a:hover{ background:var(--blue-soft); color:var(--blue-dark); }
.nav-right{ margin-left:auto; display:flex; align-items:center; gap:9px; }
.btn{ display:inline-flex; align-items:center; justify-content:center; gap:7px;
  padding:10px 18px; font-size:15px; font-weight:700; border-radius:8px; border:1px solid transparent;
  cursor:pointer; transition:.15s; white-space:nowrap; }
.btn-ghost{ background:#fff; border-color:var(--border); color:#3f4f60; }
.btn-ghost:hover{ border-color:var(--blue); color:var(--blue); }
.btn-solid{ background:var(--blue); color:#fff; }
.btn-solid:hover{ background:var(--blue-dark); }
.btn-lg{ padding:14px 30px; font-size:17px; }
.nav-toggle{ display:none; margin-left:auto; width:42px; height:42px; border:1px solid var(--border);
  background:#fff; border-radius:8px; font-size:20px; color:#3f4f60; }

@media (max-width:860px){
  .nav-menu{ display:none; position:absolute; top:66px; left:0; right:0; flex-direction:column;
    background:#fff; border-bottom:1px solid var(--border); padding:8px; margin:0; }
  .nav-menu.open{ display:flex; }
  .nav-menu a{ padding:13px 15px; }
  .nav-toggle{ display:block; }
  .nav-right .btn-txt{ display:none; }
  .nav-right .btn{ padding:9px 13px; }
}

/* ===== hero ===== */
.hero{ background:linear-gradient(160deg,#0d2c4a 0%,#123a5f 55%,#0f4d78 100%);
  color:#fff; padding:76px 24px 88px; text-align:center; position:relative; overflow:hidden; }
.hero::after{ content:""; position:absolute; inset:0;
  background:radial-gradient(circle at 20% 20%, rgba(127,194,245,.18), transparent 40%),
             radial-gradient(circle at 80% 60%, rgba(127,194,245,.12), transparent 45%); }
.hero-in{ max-width:900px; margin:0 auto; position:relative; z-index:1; }
.badge-top{ display:inline-block; padding:7px 16px; border-radius:999px;
  background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.2);
  font-size:14px; font-weight:600; margin-bottom:24px; }
.hero h1{ font-size:48px; font-weight:900; letter-spacing:-1.5px; line-height:1.18; margin-bottom:20px; }
.hero h1 span{ color:#7fc2f5; }
.hero p{ font-size:19px; color:#c6d8ea; max-width:640px; margin:0 auto 34px; }
.hero-cta{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.hero-note{ margin-top:20px; font-size:14px; color:#9fb8ce; }

@media (max-width:640px){ .hero h1{ font-size:33px; } .hero p{ font-size:16px; } }

/* ===== section ===== */
.sec{ max-width:1180px; margin:0 auto; padding:76px 24px; }
.sec-head{ text-align:center; margin-bottom:52px; }
.sec-head .k{ font-size:15px; font-weight:800; color:var(--blue); letter-spacing:.5px; text-transform:uppercase; }
.sec-head h2{ font-size:36px; font-weight:900; letter-spacing:-.8px; margin:8px 0 12px; color:var(--navy); }
.sec-head p{ font-size:17px; color:var(--muted); max-width:620px; margin:0 auto; }

.feat{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:860px){ .feat{ grid-template-columns:1fr; } }
.card{ background:#fff; border:1px solid var(--border); border-radius:14px; padding:30px 26px; }
.card .ic{ width:52px; height:52px; border-radius:12px; background:var(--blue-soft);
  display:grid; place-items:center; margin-bottom:18px; }
.card .ic svg{ width:28px; height:28px; stroke:var(--blue); }
.card h3{ font-size:20px; font-weight:800; margin-bottom:9px; color:var(--navy); }
.card p{ font-size:15.5px; color:var(--muted); }

.progs{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-top:8px; }
.prog{ padding:10px 20px; border-radius:10px; background:#fff; border:1px solid var(--border);
  font-size:15px; font-weight:700; color:#3f4f60; }
.prog b{ color:var(--blue); }

/* ===== pricing ===== */
.pricewrap{ background:#fff; }
.prices{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; max-width:960px; margin:0 auto; }
@media (max-width:860px){ .prices{ grid-template-columns:1fr; max-width:420px; } }
.price{ border:1.5px solid var(--border); border-radius:16px; padding:34px 28px; background:#fff;
  position:relative; display:flex; flex-direction:column; }
.price.best{ border-color:var(--blue); box-shadow:0 12px 34px rgba(15,117,188,.14); }
.price .tag{ position:absolute; top:-13px; left:50%; transform:translateX(-50%);
  background:var(--blue); color:#fff; font-size:13px; font-weight:800; padding:5px 16px; border-radius:999px; }
.price h3{ font-size:20px; font-weight:800; color:var(--navy); margin-bottom:6px; }
.price .sub{ font-size:14px; color:var(--muted); margin-bottom:20px; }
.price .amt{ font-size:40px; font-weight:900; color:var(--navy); letter-spacing:-1px; }
.price .amt small{ font-size:17px; font-weight:700; color:var(--muted); }
.price .per{ font-size:14px; color:var(--muted); margin-top:4px; }
.price .save{ display:inline-block; margin-top:10px; padding:4px 12px; border-radius:999px;
  background:#eafaf1; color:var(--ok); font-size:13px; font-weight:700; }
.price ul{ list-style:none; margin:22px 0; flex:1; }
.price li{ display:flex; gap:10px; align-items:flex-start; padding:7px 0; font-size:15px; color:#3f4f60; }
.price li svg{ width:19px; height:19px; stroke:var(--ok); flex:0 0 19px; margin-top:2px; }
.price .btn{ width:100%; }

/* ===== auth / forms ===== */
.authwrap{ min-height:calc(100vh - 66px); display:flex; align-items:center; justify-content:center;
  padding:40px 20px; }
.authbox{ width:100%; max-width:440px; background:#fff; border:1px solid var(--border);
  border-radius:16px; padding:40px 36px; }
.authbox h1{ font-size:26px; font-weight:900; color:var(--navy); text-align:center; margin-bottom:6px; }
.authbox .lead{ text-align:center; color:var(--muted); font-size:15px; margin-bottom:28px; }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:14px; font-weight:700; color:#3f4f60; margin-bottom:7px; }
.field input{ width:100%; padding:13px 15px; border:1.5px solid var(--border); border-radius:9px;
  font-family:inherit; font-size:15.5px; }
.field input:focus{ outline:none; border-color:var(--blue); }
.social{ display:flex; flex-direction:column; gap:10px; margin:22px 0; }
.sbtn{ display:flex; align-items:center; justify-content:center; gap:10px; padding:13px;
  border-radius:9px; font-size:15px; font-weight:700; border:1px solid var(--border); background:#fff; cursor:pointer; }
.sbtn.naver{ background:#03c75a; color:#fff; border-color:#03c75a; }
.sbtn.kakao{ background:#fee500; color:#191600; border-color:#fee500; }
.sbtn.google{ background:#fff; color:#3c4043; }
.divider{ display:flex; align-items:center; gap:14px; color:var(--muted); font-size:13.5px; margin:22px 0; }
.divider::before,.divider::after{ content:""; flex:1; height:1px; background:var(--border); }
.authfoot{ text-align:center; font-size:14.5px; color:var(--muted); margin-top:20px; }
.authfoot a{ color:var(--blue); font-weight:700; }
.check-row{ display:flex; align-items:flex-start; gap:9px; font-size:13.5px; color:var(--muted);
  margin-bottom:14px; }
.check-row a{ color:var(--blue); text-decoration:underline; }

/* ===== billing ===== */
.billwrap{ max-width:920px; margin:0 auto; padding:48px 24px; }
.billgrid{ display:grid; grid-template-columns:1.1fr .9fr; gap:26px; }
@media (max-width:820px){ .billgrid{ grid-template-columns:1fr; } }
.planpick{ background:#fff; border:1px solid var(--border); border-radius:14px; padding:26px; }
.planpick h2{ font-size:20px; font-weight:800; color:var(--navy); margin-bottom:18px; }
.planopt{ display:flex; align-items:center; gap:14px; padding:16px 18px; border:1.5px solid var(--border);
  border-radius:11px; margin-bottom:12px; cursor:pointer; transition:.12s; }
.planopt:hover{ border-color:#a9d1ec; }
.planopt.on{ border-color:var(--blue); background:var(--blue-soft); }
.planopt .radio{ width:20px; height:20px; border:2px solid var(--border); border-radius:50%; flex:0 0 20px;
  display:grid; place-items:center; }
.planopt.on .radio{ border-color:var(--blue); }
.planopt.on .radio::after{ content:""; width:10px; height:10px; border-radius:50%; background:var(--blue); }
.planopt .pn{ font-weight:800; font-size:16px; color:var(--navy); }
.planopt .pd{ font-size:13.5px; color:var(--muted); }
.planopt .pp{ margin-left:auto; text-align:right; }
.planopt .pp b{ font-size:19px; color:var(--navy); }
.planopt .pp span{ display:block; font-size:12.5px; color:var(--muted); }
.summary{ background:#fff; border:1px solid var(--border); border-radius:14px; padding:26px;
  position:sticky; top:88px; height:fit-content; }
.summary h2{ font-size:18px; font-weight:800; color:var(--navy); margin-bottom:18px; }
.srow{ display:flex; justify-content:space-between; padding:10px 0; font-size:15px; color:#3f4f60;
  border-bottom:1px dashed var(--border); }
.srow.total{ border-bottom:none; border-top:2px solid var(--navy); margin-top:8px; padding-top:16px;
  font-size:19px; font-weight:900; color:var(--navy); }
.summary .period{ background:var(--blue-soft); border-radius:9px; padding:12px 14px; font-size:13.5px;
  color:var(--blue-dark); margin:16px 0; }
#payment-method,#agreement{ margin:16px 0; }

/* ===== legal ===== */
.legal{ max-width:840px; margin:0 auto; padding:56px 24px 80px; background:#fff; }
.legal h1{ font-size:30px; font-weight:900; color:var(--navy); margin-bottom:8px; }
.legal .upd{ color:var(--muted); font-size:14px; margin-bottom:34px; }
.legal h2{ font-size:20px; font-weight:800; color:var(--navy); margin:32px 0 12px; }
.legal h3{ font-size:16px; font-weight:700; margin:20px 0 8px; }
.legal p,.legal li{ font-size:15.5px; color:#3a4a5c; margin-bottom:10px; }
.legal ul,.legal ol{ padding-left:22px; margin-bottom:14px; }
.legal table{ width:100%; border-collapse:collapse; margin:14px 0; font-size:14.5px; }
.legal th,.legal td{ border:1px solid var(--border); padding:10px 13px; text-align:left; }
.legal th{ background:#f4f7fa; font-weight:700; }

/* ===== footer ===== */
.foot{ background:var(--navy); color:#b8c8d8; padding:48px 24px 34px; }
.foot-in{ max-width:1180px; margin:0 auto; }
.foot-links{ display:flex; gap:22px; flex-wrap:wrap; margin-bottom:24px; padding-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,.12); }
.foot-links a{ font-size:14.5px; font-weight:600; color:#d4e1ee; }
.foot-links a:hover{ color:#fff; }
.biz{ font-size:13.5px; line-height:1.9; color:#8da6bf; }
.biz b{ color:#c6d6e6; }
.biz .row{ display:flex; flex-wrap:wrap; gap:6px 18px; }
.copy{ margin-top:20px; font-size:13px; color:#6d86a0; }