:root{--bg:#0b1220;--card:#121b2e;--line:#22304d;--text:#e8eefc;--muted:#9aa8c7;--accent:#7cc4ff;--err:#ff8a8a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 -apple-system,"Pretendard","Apple SD Gothic Neo","Malgun Gothic",sans-serif;word-break:keep-all;overflow-wrap:break-word}
a{color:var(--accent)}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
.narrow{max-width:560px;padding-top:80px}
header{padding:18px 0;border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;gap:12px}
.logo{font-weight:800;color:var(--text);text-decoration:none}
.badge{border:1px solid #ffc46b;color:#ffc46b;border-radius:999px;padding:2px 10px;font-size:12px}
h1{font-size:clamp(24px,4vw,32px);margin:40px 0 8px}
h2{font-size:17px;margin:28px 0 12px}
.sub,.muted{color:var(--muted)}
.muted{font-size:14px}
.tabs{display:flex;gap:8px;margin:28px 0 8px}
.tab{flex:1;background:none;border:1px solid var(--line);color:var(--muted);padding:10px;border-radius:10px;font:inherit;cursor:pointer}
.tab.on{border-color:var(--accent);color:var(--text)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;color:var(--text)}
.item{display:flex;flex-direction:column;gap:4px;text-align:left;font:inherit;cursor:pointer}
.item strong{font-size:20px}
.item.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.checkout{margin:32px 0 64px;display:flex;flex-direction:column;gap:16px}
input[type=email],#quoteCode{display:block;width:100%;margin-top:6px;padding:12px;border-radius:10px;border:1px solid var(--line);background:#0e1626;color:var(--text);font:inherit}
.summary{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:16px}
.summary strong{font-size:22px;white-space:nowrap}
.agree{display:flex;gap:8px;align-items:flex-start;font-size:14px;color:var(--muted)}
.agree input{margin-top:5px}
.btn{display:inline-block;text-align:center;background:var(--accent);color:#06121f;font:inherit;font-weight:700;padding:14px;border:0;border-radius:10px;text-decoration:none;cursor:pointer}
.btn:disabled{opacity:.4;cursor:not-allowed}
.err{color:var(--err);margin:0;min-height:1em}
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:13px}
footer p{margin:4px 0}
.logo small{font-size:12px;color:var(--muted);font-weight:400;margin-left:6px}
nav{flex:1;display:flex;flex-wrap:wrap;gap:4px 14px}
nav a{color:var(--muted);text-decoration:none;font-size:14px}
.hero{padding:48px 0 8px}
.hero h1{margin-top:0}
.hero p{color:var(--muted);max-width:640px}
.item .name{font-weight:700}
.item .spec{font-size:13px;color:var(--muted);line-height:1.5}
.item .terms{color:var(--accent)}
.item:disabled{opacity:.45;cursor:not-allowed}
.note{color:var(--muted);font-size:14px;margin-top:12px}
.steps{padding-left:0;list-style:none;display:grid;gap:12px}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px;display:flex;flex-direction:column;gap:4px}
.steps span{color:var(--muted);font-size:14px}
.plain{padding-left:18px;color:var(--muted)}
dl dt{font-weight:700;margin-top:18px}
dl dd{margin:4px 0 0;color:var(--muted)}
.checkout h2{margin:0}
textarea,input[type=tel],input[type=file]{display:block;width:100%;margin-top:6px;padding:12px;border-radius:10px;border:1px solid var(--line);background:#0e1626;color:var(--text);font:inherit}
.narrow{display:flex;flex-direction:column;gap:16px}
.narrow h1{font-size:24px;margin:0 0 8px}

/* Hallmark · custom glassmorphism requested by user · existing checkout structure preserved.
 * Pre-emit critique: P4 H4 E4 S4 R4 V4. Silver / sea-glass surfaces, mint accent. */
:root{--bg:#e7eeed;--card:rgba(250,255,253,.61);--line:rgba(255,255,255,.83);--text:#183b36;--muted:#536e68;--accent:#176b59;--err:#aa3042;--glass-edge:rgba(113,152,143,.2);--glass-shadow:rgba(42,84,74,.09);--glass-shine:rgba(255,255,255,.91);--glass-field:rgba(255,255,255,.64);--glass-selected:rgba(219,244,231,.9);--glass-bloom:rgba(140,204,178,.48);--glass-warm:rgba(246,230,194,.55);--glass-transparent:rgba(230,240,234,0);--button-ink:#f6fff9;--badge-bg:#f5ecd4;--badge-ink:#77551b;--font-body:-apple-system,"Pretendard","Apple SD Gothic Neo","Malgun Gothic",sans-serif;--font-display:var(--font-body)}
html,body{overflow-x:clip}
body{font-family:var(--font-body);background:radial-gradient(ellipse at 8% 8%,var(--glass-bloom),var(--glass-transparent) 42%),radial-gradient(ellipse at 95% 34%,var(--glass-warm),var(--glass-transparent) 42%),var(--bg);background-attachment:fixed;color:var(--text)}
.wrap{max-width:1120px;padding-inline:32px}
header{margin:20px auto 0;width:calc(100% - 48px);max-width:1184px;padding:18px 0;border:1px solid var(--line);border-radius:24px;background:var(--card);box-shadow:0 10px 40px var(--glass-shadow),inset 0 1px var(--glass-shine);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
header .wrap{gap:24px;flex-wrap:wrap}.logo{font-size:20px;letter-spacing:-.05em}.logo small{font-size:10px;letter-spacing:0}.badge{background:var(--badge-bg);border-color:var(--line);color:var(--badge-ink);white-space:nowrap}nav{justify-content:flex-end;gap:8px 18px}nav a{font-size:13px;white-space:nowrap}nav a:hover{color:var(--accent)}
.hero{padding:76px 0 40px;max-width:900px}.hero h1{font-family:var(--font-display);font-size:clamp(30px,4vw,54px);line-height:1.3;letter-spacing:-.055em;font-weight:750;margin:0}.hero p{font-size:16px;line-height:1.85;max-width:690px;margin-top:24px}
h2{font-size:20px;letter-spacing:-.035em;margin:0 0 20px}#catalog>section{padding:30px 0 24px;scroll-margin-top:24px}.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{position:relative;border-radius:24px;border:1px solid var(--line);background:linear-gradient(135deg,var(--glass-shine),var(--card));box-shadow:0 12px 35px var(--glass-shadow),inset 0 1px 0 var(--glass-shine);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:27px}
.item{min-height:220px;gap:8px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease}.item .name{font-size:16px;font-weight:650}.item strong{font-size:29px;letter-spacing:-.045em;font-weight:750;font-variant-numeric:tabular-nums;margin:2px 0 6px}.item .spec{font-size:13px;line-height:1.7}.item .terms{margin-top:auto;padding-top:7px;font-size:12px;color:var(--muted)}.item:not(:disabled):hover{transform:translateY(-3px);border-color:var(--glass-edge);box-shadow:0 20px 40px var(--glass-shadow),inset 0 1px var(--glass-shine)}.item.on{background:var(--glass-selected);border-color:var(--accent);box-shadow:0 0 0 2px var(--accent),0 14px 36px var(--glass-shadow)}.item.on::after{content:'✓';position:absolute;right:20px;top:22px;color:var(--accent);font-weight:750}.item:disabled{opacity:.53;box-shadow:none;filter:saturate(.3)}
#how,#refund,#faq,#support{margin-top:56px;scroll-margin-top:24px}.steps{gap:12px}.steps li{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:21px 25px;box-shadow:inset 0 1px var(--glass-shine);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.steps strong{font-size:16px}.steps span{font-size:14px}.plain{line-height:1.9}.note{font-size:13px}
.checkout{margin:48px 0 72px;padding:40px;gap:23px;border-radius:30px;background:linear-gradient(130deg,var(--glass-shine),var(--glass-selected));box-shadow:0 24px 65px var(--glass-shadow),inset 0 1px var(--glass-shine)}.checkout h2{font-size:28px}.summary{border-color:var(--glass-edge);padding-top:22px;align-items:start}.summary strong{font-size:28px}.summary>span{min-width:0}input[type=email],#quoteCode,textarea,input[type=tel],input[type=file]{background:var(--glass-field);border:1px solid var(--glass-edge);border-radius:13px;color:var(--text);padding:15px 17px;box-shadow:inset 0 2px 5px var(--glass-shadow);font-size:16px}input::placeholder,textarea::placeholder{color:var(--muted)}.agree{font-size:13px;line-height:1.8}.agree input{accent-color:var(--accent);flex:none;width:17px;height:17px}.btn{border-radius:14px;padding:17px;background:var(--accent);color:var(--button-ink);box-shadow:0 8px 20px var(--glass-shadow);font-size:16px;white-space:nowrap}.btn:disabled{opacity:.65;box-shadow:none;font-size:14px}.btn:not(:disabled):hover{filter:brightness(1.12)}
:where(a,button,input,textarea):focus-visible{outline:3px solid var(--accent);outline-offset:4px}#faq dl{max-width:790px}dl dt{margin-top:27px;font-size:16px}dl dd{font-size:14px;line-height:1.9}#support{margin-bottom:54px}footer{border-color:var(--glass-edge);background:var(--card);padding:36px 0 42px;font-size:12px}footer a{white-space:nowrap}.narrow{padding-top:65px;padding-bottom:70px}.narrow h1{font-size:30px}
@supports not (backdrop-filter:blur(1px)){.card,header,.steps li{background:var(--glass-shine)}}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}header .wrap{gap:12px}.logo{flex:1}nav{order:3;flex-basis:100%;justify-content:flex-start;border-top:1px solid var(--glass-edge);padding-top:13px}.hero{padding-top:52px}}
@media(max-width:520px){.wrap{padding-inline:20px}header{width:calc(100% - 24px);margin-top:12px;border-radius:20px}header .wrap{padding-inline:17px}.logo{font-size:18px}.logo small{display:none}nav{gap:8px 15px}nav a{font-size:12px}.hero{padding:42px 0 22px}.hero h1{font-size:30px;line-height:1.4}.hero p{font-size:14px;margin-top:20px}.grid{grid-template-columns:minmax(0,1fr);gap:13px}.item{min-height:0;padding:24px}.item strong{font-size:29px}.item .name{font-size:16px}h2{font-size:19px}#catalog>section{padding-top:27px}.checkout{padding:24px 20px;border-radius:23px}.checkout h2{font-size:25px}.summary{flex-direction:column;gap:8px}.steps li{padding:19px}.btn:disabled{font-size:12px;padding-inline:8px}#how,#refund,#faq,#support{margin-top:40px}footer{font-size:11px}.narrow{padding-top:40px}}
@media(prefers-reduced-motion:reduce){.item{transition:none}.item:not(:disabled):hover{transform:none}}