/* Zittme Official layout — clean bright SaaS style (하드코딩 브랜딩) */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');

:root {
    --zm-brand: #2677e3;
    --zm-brand-hover: #1c5fc0;
    --zm-brand-soft: rgba(38, 119, 227, 0.08);
    --zm-ink: #3d4451;
    --zm-bg: #ffffff;
    --zm-surface: #f7f9fc;
    --zm-text: #222831;
    --zm-text-sub: #6b7280;
    --zm-border: #e5e9f0;
    --zm-header-h: 64px;
    --zm-max-w: 1200px;
    --zm-radius: 12px;
    --zm-font: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
[data-theme="dark"] {
    --zm-brand-soft: rgba(38, 119, 227, 0.16);
    --zm-bg: #14161a;
    --zm-surface: #1c1f26;
    --zm-text: #e4e7ec;
    --zm-text-sub: #9aa1ad;
    --zm-border: #2b3038;
}

/* base */
html, body { margin: 0; padding: 0; }
body { background: var(--zm-bg); transition: background-color .2s, color .2s; }
.zm-official { display: flex; flex-direction: column; min-height: 100vh; font-family: var(--zm-font); color: var(--zm-text); word-break: keep-all; overflow-wrap: break-word; }
.zm-official .zm-main { flex: 1 0 auto; }
.zm-official a { text-decoration: none; color: inherit; }
.zm-official ul { list-style: none; margin: 0; padding: 0; }
.zm-inner { max-width: var(--zm-max-w); margin: 0 auto; padding: 0 20px; box-sizing: border-box; }

/* buttons */
.zm-btn { box-sizing: border-box; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; font-size: 14.5px; border: 1px solid transparent; border-radius: 8px; font-weight: 600; cursor: pointer; transition: background-color .15s, color .15s, border-color .15s; white-space: nowrap; }
.zm-btn-sm { padding: 7px 14px; font-size: 14px; }
.zm-btn-lg { padding: 13px 26px; font-size: 16px; border-radius: 10px; }
.zm-btn-primary { background: var(--zm-brand); color: #fff !important; }
.zm-btn-primary:hover { background: var(--zm-brand-hover); }
.zm-btn-ghost { background: transparent; color: var(--zm-text); border-color: var(--zm-border); }
.zm-btn-ghost:hover { border-color: var(--zm-brand); color: var(--zm-brand); }
.zm-btn-block { display: flex; width: 100%; }

/* header */
.zm-header { position: sticky; top: 0; z-index: 100; height: var(--zm-header-h); background: color-mix(in srgb, var(--zm-bg) 85%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--zm-border); }
.zm-header-inner { display: flex; align-items: center; height: 100%; gap: 36px; }
.zm-logo img { height: 28px; display: block; }
[data-theme="dark"] .zm-logo img,
[data-theme="dark"] .zm-drawer-logo,
[data-theme="dark"] .zm-footer-logo { filter: invert(1) hue-rotate(180deg); }

/* gnb */
.zm-gnb { flex: 1; }
.zm-gnb > ul { display: flex; gap: 6px; }
.zm-gnb > ul > li { position: relative; }
.zm-gnb > ul > li > a { display: flex; align-items: center; height: var(--zm-header-h); padding: 0 14px; font-size: 15px; font-weight: 500; color: var(--zm-text); }
.zm-gnb > ul > li:hover > a,
.zm-gnb > ul > li.active > a { color: var(--zm-brand); }
/* 하위 메뉴 보유 표시: CSS 셰브론 */
.zm-gnb > ul > li.has-sub > a::after { content: ''; display: inline-block; width: 6px; height: 6px; margin-left: 7px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); opacity: .55; transition: transform .18s; }
.zm-gnb > ul > li.has-sub:hover > a::after { transform: rotate(225deg) translateY(-1px); }

/* 드롭다운 패널 */
.zm-gnb-sub { position: absolute; top: calc(100% - 8px); left: 0; min-width: 208px; padding: 8px; background: color-mix(in srgb, var(--zm-bg) 92%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--zm-border); border-radius: 14px; box-shadow: 0 2px 6px rgba(0,0,0,.05), 0 20px 48px rgba(0,0,0,.14); opacity: 0; visibility: hidden; transform: translateY(10px) scale(.98); transform-origin: top left; transition: opacity .18s ease, transform .18s ease, visibility .18s; }
/* 헤더-패널 사이 호버 공백 브릿지 */
.zm-gnb-sub::before { content: ''; position: absolute; top: -10px; left: 0; right: 0; height: 10px; }
.zm-gnb > ul > li:hover .zm-gnb-sub,
.zm-gnb > ul > li:focus-within .zm-gnb-sub { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.zm-gnb-sub li + li { margin-top: 2px; }
.zm-gnb-sub a { position: relative; display: block; padding: 10px 14px 10px 16px; border-radius: 9px; font-size: 14.5px; font-weight: 500; color: var(--zm-text); transition: background-color .12s, color .12s, padding-left .12s; }
.zm-gnb-sub a::before { content: ''; position: absolute; left: 6px; top: 50%; transform: translateY(-50%) scaleY(0); width: 3px; height: 16px; border-radius: 2px; background: var(--zm-brand); transition: transform .15s; }
.zm-gnb-sub a:hover, .zm-gnb-sub .active > a { background: var(--zm-brand-soft); color: var(--zm-brand); padding-left: 20px; }
.zm-gnb-sub a:hover::before, .zm-gnb-sub .active > a::before { transform: translateY(-50%) scaleY(1); }
[data-theme="dark"] .zm-gnb-sub { box-shadow: 0 2px 6px rgba(0,0,0,.3), 0 20px 48px rgba(0,0,0,.5); }

/* header utils */
.zm-utils { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.zm-util-link { font-size: 14px; font-weight: 500; color: var(--zm-text-sub); }
.zm-util-link:hover { color: var(--zm-brand); }
.zm-theme-toggle { border: 1px solid var(--zm-border); background: transparent; color: var(--zm-text-sub); width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 16px; line-height: 1; display: inline-flex; align-items: center; justify-content: center; }
.zm-theme-toggle:hover { color: var(--zm-brand); border-color: var(--zm-brand); }
.zm-theme-toggle svg { width: 16px; height: 16px; fill: currentColor; }
.zm-ico-moon { display: none; }
[data-theme="dark"] .zm-ico-sun { display: none; }
[data-theme="dark"] .zm-ico-moon { display: inline; }

/* mobile menu button */
.zm-menu-btn { display: none; flex-direction: column; justify-content: center; gap: 4px; width: 36px; height: 36px; background: transparent; border: 0; cursor: pointer; padding: 6px; }
.zm-menu-btn span { display: block; height: 2px; background: var(--zm-text); border-radius: 2px; }

/* drawer */
.zm-drawer-overlay { position: fixed; inset: 0; z-index: 190; background: rgba(0,0,0,.4); }
.zm-drawer { position: fixed; top: 0; right: 0; bottom: 0; z-index: 200; width: min(320px, 85vw); background: var(--zm-bg); font-family: var(--zm-font); color: var(--zm-text); transform: translateX(100%); transition: transform .25s ease; display: flex; flex-direction: column; box-shadow: -8px 0 32px rgba(0,0,0,.15); }
.zm-drawer.open { transform: translateX(0); }
.zm-drawer ul { list-style: none; margin: 0; padding: 0; }
.zm-drawer a { text-decoration: none; color: inherit; }
.zm-drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--zm-border); }
.zm-drawer-logo { height: 24px; }
.zm-drawer-close { background: transparent; border: 0; font-size: 26px; line-height: 1; cursor: pointer; color: var(--zm-text-sub); }
.zm-drawer-menu { flex: 1; overflow-y: auto; padding: 12px 8px; }
.zm-drawer-row { display: flex; align-items: center; }
.zm-drawer-row > a { flex: 1; padding: 12px; font-size: 16px; font-weight: 500; border-radius: 8px; }
.zm-drawer-row > a:hover { background: var(--zm-brand-soft); color: var(--zm-brand); }
.zm-drawer-sub-toggle { background: transparent; border: 0; color: var(--zm-text-sub); font-size: 14px; padding: 12px; cursor: pointer; transition: transform .2s; }
.zm-drawer-sub-toggle.open { transform: rotate(180deg); }
.zm-drawer-sub { display: none; padding-left: 12px; }
.zm-drawer-sub a { display: block; padding: 10px 12px; font-size: 14px; color: var(--zm-text-sub); border-radius: 8px; }
.zm-drawer-sub a:hover { background: var(--zm-brand-soft); color: var(--zm-brand); }
.zm-drawer-foot { padding: 16px 20px; border-top: 1px solid var(--zm-border); display: flex; flex-direction: column; gap: 12px; font-size: 14px; }
.zm-drawer-foot .zm-btn-block { padding: 13px 18px; font-size: 15px; border-radius: 10px; }
body.zm-no-scroll { overflow: hidden; }

/* main */
.zm-main { min-height: 60vh; }
.zm-page-content { padding: 40px 20px 80px; }

/* hero */
.zm-hero { padding: 96px 0 72px; text-align: center; background: linear-gradient(180deg, var(--zm-brand-soft) 0%, transparent 100%); }
.zm-hero-eyebrow { font-size: 15px; font-weight: 700; color: var(--zm-brand); letter-spacing: .08em; text-transform: uppercase; margin: 0 0 14px; }
.zm-hero-title { font-size: clamp(32px, 5vw, 52px); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 18px; line-height: 1.2; }
.zm-point { color: var(--zm-brand); }
.zm-hero-desc { font-size: clamp(15px, 2vw, 18px); color: var(--zm-text-sub); line-height: 1.7; margin: 0 0 32px; }
.zm-hero-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* hero beta notice */
.zm-hero-beta { display: inline-flex; align-items: center; gap: 8px; margin: 4px 0 0; padding: 8px 18px 8px 8px; font-size: 14.5px; font-weight: 600; color: var(--zm-text); background: var(--zm-bg); border: 1px solid var(--zm-border); border-radius: 999px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.zm-hero-beta .zm-badge-pill { margin: 0; font-size: 12px; padding: 4px 12px; }

/* main board widgets (개발자노트/소식) */
.zm-boards { padding: 40px 0 24px; }
.zm-board-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.zm-board-panel { min-width: 0; border: 1px solid var(--zm-border); border-radius: var(--zm-radius); background: var(--zm-bg); padding: 22px 24px; }
.zm-board-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--zm-border); }
.zm-board-head h2 { margin: 0; font-size: 18px; font-weight: 700; }
.zm-board-head h2 a:hover { color: var(--zm-brand); }
.zm-board-more { font-size: 13px; font-weight: 600; color: var(--zm-text-sub); }
.zm-board-more:hover { color: var(--zm-brand); }
.zm-board-list li { display: flex; align-items: center; gap: 12px; padding: 9px 0; min-width: 0; }
.zm-board-list li + li { border-top: 1px solid color-mix(in srgb, var(--zm-border) 55%, transparent); }
.zm-board-list a { flex: 1; min-width: 0; display: flex; align-items: center; gap: 6px; }
.zm-board-title { flex: 0 1 auto; min-width: 0; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14.5px; word-break: normal; }
.zm-board-list a:hover .zm-board-title { color: var(--zm-brand); }
.zm-board-cnt { flex: 0 0 auto; font-size: 12px; font-weight: 700; font-style: normal; color: var(--zm-brand); }
.zm-board-list time { flex: 0 0 auto; font-size: 12.5px; color: var(--zm-text-sub); }
.zm-board-empty { justify-content: center; color: var(--zm-text-sub); font-size: 14px; padding: 24px 0; }
@media (max-width: 768px) {
    .zm-board-grid { grid-template-columns: 1fr; gap: 16px; }
    .zm-board-panel { padding: 18px 16px; }
}
/* 폭 축소 단계 대응: 1차로 날짜 숨김 → 이후 제목은 말줄임으로 자동 축소 */
@media (max-width: 480px) {
    .zm-board-list time { display: none; }
}

/* tracks */
.zm-tracks { padding: 24px 0 72px; }
.zm-track-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.zm-track-card { background: var(--zm-surface); border: 1px solid var(--zm-border); border-radius: var(--zm-radius); padding: 32px 28px; transition: transform .15s, box-shadow .15s; }
.zm-track-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,.08); }
.zm-track-icon { margin-bottom: 16px; }
.zm-track-icon svg { width: 32px; height: 32px; fill: var(--zm-brand); }
.zm-track-card h3 { margin: 0 0 10px; font-size: 19px; font-weight: 700; }
.zm-track-card p { margin: 0 0 18px; font-size: 14.5px; line-height: 1.7; color: var(--zm-text-sub); }
.zm-track-link { font-size: 14px; font-weight: 600; color: var(--zm-brand); }

/* plain sub (타이틀 없음) */
.zm-plain-content { padding-top: 48px; }

/* sub visual */
.zm-sub-visual { padding: 56px 0 32px; border-bottom: 1px solid var(--zm-border); background: linear-gradient(180deg, var(--zm-brand-soft) 0%, transparent 100%); }
.zm-sub-title { margin: 0; font-size: clamp(24px, 3.5vw, 34px); font-weight: 800; letter-spacing: -0.02em; }
.zm-sub-title a { color: inherit; }
.zm-sub-title a:hover { color: var(--zm-brand); }

/* about page */
.zm-about-hero { padding: 96px 0 64px; text-align: center; background: linear-gradient(180deg, var(--zm-brand-soft) 0%, transparent 100%); }
.zm-about-section { padding: 72px 0; }
.zm-about-alt { background: var(--zm-surface); }
.zm-about-title { margin: 0 0 16px; font-size: clamp(24px, 3.5vw, 32px); font-weight: 800; letter-spacing: -0.02em; text-align: center; }
.zm-about-lead { margin: 0 auto 48px; max-width: 640px; text-align: center; color: var(--zm-text-sub); line-height: 1.75; font-size: 16px; }
.zm-timeline { list-style: none; margin: 0 auto; padding: 0; max-width: 640px; position: relative; }
.zm-timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--zm-border); }
.zm-timeline li { position: relative; padding: 0 0 36px 36px; }
.zm-timeline li::before { content: ''; position: absolute; left: 0; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--zm-bg); border: 3px solid var(--zm-border); box-sizing: border-box; }
.zm-timeline li.zm-timeline-now::before { border-color: var(--zm-brand); background: var(--zm-brand); }
.zm-timeline-era { display: inline-block; margin-bottom: 4px; font-size: 13px; font-weight: 700; color: var(--zm-brand); letter-spacing: .04em; }
.zm-timeline h3 { margin: 0 0 6px; font-size: 18px; font-weight: 700; }
.zm-timeline p { margin: 0; font-size: 14.5px; color: var(--zm-text-sub); line-height: 1.65; }
.zm-timeline-now h3 { color: var(--zm-brand); }
.zm-about-roadmap { text-align: center; }
.zm-roadmap-card { max-width: 640px; margin: 0 auto 32px; padding: 40px 32px; border: 1px solid var(--zm-border); border-radius: var(--zm-radius); background: linear-gradient(180deg, var(--zm-brand-soft) 0%, transparent 100%); }
.zm-badge-pill { display: inline-block; margin-bottom: 14px; padding: 5px 14px; font-size: 13px; font-weight: 700; color: #fff; background: var(--zm-brand); border-radius: 999px; }
.zm-roadmap-card h3 { margin: 0 0 10px; font-size: clamp(18px, 2.5vw, 24px); font-weight: 800; letter-spacing: -0.01em; }
.zm-roadmap-card p { margin: 0; color: var(--zm-text-sub); line-height: 1.7; }
.zm-about-cta { text-align: center; }

/* footer */
.zm-footer { border-top: 1px solid var(--zm-border); background: var(--zm-surface); padding: 48px 0 40px; }
.zm-footer-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
.zm-footer-logo { height: 22px; opacity: .85; }
.zm-footer-nav ul { display: flex; gap: 22px; flex-wrap: wrap; }
.zm-footer-nav a { font-size: 14px; color: var(--zm-text-sub); }
.zm-footer-nav a:hover { color: var(--zm-brand); }
.zm-copyright { margin: 0; font-size: 13px; color: var(--zm-text-sub); }

/* responsive */
@media (max-width: 1024px) {
    .zm-gnb { display: none; }
    .zm-menu-btn { display: flex; }
    .zm-utils .zm-util-link, .zm-utils .zm-btn { display: none; }
}
@media (max-width: 768px) {
    :root { --zm-header-h: 56px; }
    .zm-hero { padding: 64px 0 48px; }
    /* 데스크톱용 강제 줄바꿈 해제 — keep-all 자연 줄바꿈에 맡김 */
    .zm-hero-desc br, .zm-about-lead br { display: none; }
    .zm-track-grid { grid-template-columns: 1fr; }
    .zm-footer-top { flex-direction: column; align-items: flex-start; }
}