:root{--paper:#eef6fb;--paper-2:#ddecf5;--card:#ffffff;--ink:#0f3252;--ink-soft:#2c5274;--muted:#5d7c93;--faint:#94afc1;--line:#d2e3ef;--line-strong:#b8d2e3;--accent:#1379cf;--accent-2:#19a7c4;--max:1120px;--nav-h:64px;font-family:Noto Sans KR,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.serif{font-family:"Noto Serif KR",Georgia,Times New Roman,serif}.hero-serif{font-family:Playfair Display,"Noto Serif KR",Georgia,serif;font-style:italic;font-weight:500}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}body,html{margin:0;padding:0;background:var(--paper);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;font-weight:400}a{color:inherit;text-decoration:none}.container{max-width:var(--max);margin:0 auto;padding:0 28px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;height:var(--nav-h);background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:saturate(140%) blur(8px);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}.nav__inner{max-width:var(--max);margin:0 auto;height:100%;padding:0 28px;display:flex;align-items:center;justify-content:space-between}.nav__brand{font-size:1.15rem;font-weight:700;letter-spacing:.02em}.nav__menu{display:flex;gap:26px}.nav__menu a{font-size:.86rem;letter-spacing:.06em;color:var(--ink-soft);text-transform:uppercase;transition:color .15s}.nav__menu a:hover{color:var(--accent)}.hero{position:relative;min-height:72vh;display:grid;place-items:center;text-align:center;color:#fff;background-color:#0e5aa6;background-size:cover;background-position:50%;background-repeat:no-repeat}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,33,61,.34),rgba(6,40,72,.5))}.hero__inner{position:relative;z-index:1;padding:0 24px}.hero__eyebrow{font-size:.78rem;letter-spacing:.42em;font-weight:500;text-indent:.42em;opacity:.9}.hero__title{font-size:clamp(2.6rem,7vw,5rem);font-weight:700;letter-spacing:.04em;margin:18px 0 0;line-height:1.1;text-shadow:0 2px 20px rgba(0,0,0,.3)}.hero__rule{width:56px;height:1px;background:rgba(255,255,255,.7);margin:26px auto 0}.hero__sub{margin:22px auto 0;max-width:46ch;font-size:1.02rem;font-weight:300;opacity:.92}.section{padding:88px 0}.section--tight{padding:64px 0}.section__eyebrow{text-align:center;font-size:.74rem;letter-spacing:.32em;color:var(--accent);font-weight:600;text-indent:.32em}.section__title{text-align:center;font-size:clamp(1.6rem,3.5vw,2.2rem);font-weight:700;letter-spacing:.02em;margin:12px 0 0}.section__lead{text-align:center;max-width:62ch;margin:22px auto 0;color:var(--ink-soft);font-size:1.05rem}.about{max-width:720px;margin:0 auto;text-align:center}.about .markdown{color:var(--ink-soft);font-size:1.08rem}.tech{display:flex;flex-direction:column;margin-top:48px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card)}.tech__group{display:grid;grid-template-columns:220px 1fr;grid-gap:24px;gap:24px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line);transition:background .2s ease}.tech__group:last-child{border-bottom:none}.tech__group:hover{background:color-mix(in srgb,var(--accent) 5%,var(--card))}.tech__category{display:block;font-size:.98rem;letter-spacing:.01em;color:var(--ink);font-weight:700;line-height:1.4}.tech__badges{list-style:none;display:flex;flex-wrap:wrap;gap:9px;margin:0;padding:0}.tech__badge{font-size:.85rem;color:var(--ink-soft);background:var(--paper);border:1px solid var(--line-strong);border-radius:100px;padding:5px 14px}@media (max-width:640px){.tech__group{grid-template-columns:1fr;gap:12px;padding:20px}.tech__category{color:var(--accent);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}}.projects{display:flex;flex-direction:column;gap:26px;margin-top:48px}.pcard{display:grid;grid-template-columns:300px 1fr;background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:box-shadow .25s ease,transform .25s ease,border-color .25s}.pcard:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(40,33,22,.12);border-color:var(--line-strong)}.pcard__cover{background-color:var(--paper-2);background-size:cover;background-position:50%;min-height:200px}.pcard__body{padding:30px 32px;display:flex;flex-direction:column}.pcard__date{font-size:.76rem;letter-spacing:.08em;color:var(--faint);font-weight:600}.pcard__title{font-size:1.4rem;font-weight:700;letter-spacing:.01em;margin:10px 0 0;line-height:1.35}.pcard__summary{color:var(--muted);margin:12px 0 0;flex:1 1}.pcard__tags{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin:18px 0 0;padding:0}.pcard__tag{font-size:.72rem;letter-spacing:.04em;color:var(--accent);border:1px solid var(--line-strong);border-radius:100px;padding:3px 11px}.pcard__more{margin-top:18px;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);font-weight:600}.certs{list-style:none;max-width:760px;margin:44px auto 0;padding:0;border-top:1px solid var(--line-strong)}.certs__item{display:grid;grid-template-columns:96px 1fr auto;grid-gap:22px;gap:22px;align-items:baseline;padding:18px 6px;border-bottom:1px solid var(--line)}.certs__date{font-size:.82rem;letter-spacing:.04em;color:var(--accent);font-weight:700}.certs__name{font-weight:700;color:var(--ink)}.certs__issuer{font-size:.86rem;color:var(--muted);text-align:right}@media (max-width:640px){.certs__item{grid-template-columns:1fr;gap:3px;padding:16px 4px}.certs__issuer{text-align:left}}.contact{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:30px}.contact__link{font-size:.96rem;color:var(--ink-soft);transition:color .15s}.contact__link:hover{color:var(--accent)}.resume-btn{display:inline-block;margin-top:10px;border:1px solid var(--ink);color:var(--ink);padding:12px 30px;font-size:.84rem;letter-spacing:.14em;text-transform:uppercase;transition:background .2s,color .2s}.resume-btn:hover{background:var(--ink);color:var(--paper)}.detail__cover{min-height:46vh;background-color:#0e5aa6;background-size:cover;background-position:50%;display:grid;place-items:end center;text-align:center;color:#fff;position:relative;padding-bottom:48px}.detail__cover:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,33,61,.25),rgba(6,40,72,.6))}.detail__cover-inner{position:relative;z-index:1;padding:0 24px}.detail__date{font-size:.78rem;letter-spacing:.1em;opacity:.85}.detail__title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700;letter-spacing:.02em;margin:12px 0 0;line-height:1.25;text-shadow:0 2px 20px rgba(0,0,0,.3)}.article{max-width:760px;margin:0 auto;padding:56px 28px 0}.detail__summary{font-size:1.15rem;color:var(--ink-soft);text-align:center;margin:0 0 8px}.detail__meta{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;padding:18px 0 36px;border-bottom:1px solid var(--line);margin-bottom:40px}.detail__back{display:inline-block;margin:36px 0 0;font-size:.84rem;letter-spacing:.06em;color:var(--muted)}.detail__back:hover{color:var(--accent)}.detail__section-title{font-size:1.25rem;font-weight:700;margin:44px 0 16px}.pdf__frame{width:100%;height:960px;border:1px solid var(--line);border-radius:4px;background:#fff}.detail__attachments,.detail__summary-slide{width:min(1140px,94vw);margin-left:50%;transform:translateX(-50%)}.detail__summary-slide{margin-top:0;margin-bottom:8px}.detail__summary-slide .pdf__frame{height:auto;aspect-ratio:16/9;box-shadow:0 10px 30px rgba(15,50,82,.1)}.detail__downloads a,.pdf__download{color:var(--accent)}.pdf__download{display:inline-block;margin-top:10px;font-size:.88rem}.detail__downloads ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.footer{border-top:1px solid var(--line);padding:40px 0;text-align:center;color:var(--faint);font-size:.84rem}.markdown{color:var(--ink-soft)}.markdown h2{color:var(--ink);font-size:1.2rem;margin:2rem 0 .6rem}.markdown h3{color:var(--ink);font-size:1.02rem;margin:1.4rem 0 .4rem}.markdown ul{padding-left:1.2rem}.markdown li{margin:.3rem 0}.markdown strong{color:var(--ink)}.markdown code{background:var(--paper-2);border-radius:4px;padding:.1rem .35rem;font-size:.88em}.markdown a{color:var(--accent);text-decoration:underline;word-break:break-all}@media (max-width:820px){.nav__menu{gap:18px}.pcard{grid-template-columns:1fr}.pcard__cover{min-height:200px}.section{padding:64px 0}}@media (max-width:520px){.nav__brand{font-size:1rem}.nav__menu a{font-size:.78rem}.pdf__frame{height:440px}}