:root {
  --bg: #eff4fb;
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --text: #172134;
  --text-secondary: #5e6b7e;
  --border: rgba(33, 61, 105, .12);
  --border-strong: rgba(33, 61, 105, .2);
  --blue: #2169ce;
  --blue-hover: #145bbb;
  --blue-soft: #e5f0ff;
  --green: #248a3d;
  --shadow-sm: 0 12px 36px rgba(43, 74, 120, .075);
  --shadow-md: 0 22px 56px rgba(43, 74, 120, .14);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(ellipse 900px 720px at 1% 4%, rgba(97, 171, 240, .36), transparent 68%),
    radial-gradient(ellipse 800px 660px at 96% 8%, rgba(156, 168, 243, .31), transparent 70%),
    radial-gradient(ellipse 740px 660px at 53% 56%, rgba(103, 197, 213, .17), transparent 72%),
    linear-gradient(135deg, #eaf3fc 0%, #f8fbff 44%, #eef0fa 100%);
  background-attachment: fixed;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -.012em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, input, select { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
button, [data-hash], [data-go], [data-project], [data-resource], [data-achievement] { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid rgba(0, 113, 227, .35);
  outline-offset: 3px;
}

.page-shell { width: min(1280px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 12px;
  z-index: 50;
  margin-top: 12px;
  min-height: 64px;
  padding: 8px 10px 8px 12px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, .95);
  border-radius: 20px;
  background: linear-gradient(130deg, rgba(255, 255, 255, .82), rgba(241, 248, 255, .57));
  -webkit-backdrop-filter: saturate(190%) blur(34px);
  backdrop-filter: saturate(190%) blur(34px);
  box-shadow: 0 18px 46px rgba(53, 87, 139, .16), inset 0 2px 1px rgba(255, 255, 255, 1), inset 0 -1px 1px rgba(255, 255, 255, .5);
  transition: opacity .38s ease, transform .48s cubic-bezier(.2,.75,.2,1), background .25s ease;
}
.site-header.is-hidden { opacity: 0; transform: translateY(calc(-100% - 26px)); pointer-events: none; }
.brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; min-width: 0; }
.brand-mark { width: 40px; height: 40px; flex: 0 0 40px; border-radius: 12px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg, #24446b, #101d34); box-shadow: inset 0 1px rgba(255, 255, 255, .28), 0 8px 18px rgba(18, 48, 92, .18); font-size: 19px; font-weight: 650; letter-spacing: 0; }
.brand strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; font-weight: 650; letter-spacing: -.015em; }
.brand small { display: block; margin-top: 1px; color: var(--text-secondary); font-size: 11px; letter-spacing: .02em; }
.main-nav { display: flex; gap: 2px; padding: 3px; border: 1px solid rgba(255, 255, 255, .62); border-radius: 13px; background: rgba(49, 83, 132, .07); }
.mobile-nav { display: none; }
.nav-link, .quiet-btn, .icon-btn { border: 0; background: transparent; cursor: pointer; }
.nav-link { flex: 0 0 auto; min-height: 38px; padding: 8px 13px; border-radius: 10px; color: var(--text-secondary); font-size: 14px; font-weight: 500; white-space: nowrap; transition: color .18s ease, background .18s ease, box-shadow .18s ease; }
.nav-link:hover { color: var(--text); }
.nav-link.active { color: #174f9f; background: rgba(255, 255, 255, .95); box-shadow: 0 3px 10px rgba(39, 76, 125, .12), inset 0 1px rgba(255, 255, 255, 1); }
.header-actions { display: flex; justify-content: flex-end; gap: 7px; }
.icon-btn, .quiet-btn { min-height: 40px; border: 1px solid var(--border); border-radius: 12px; background: rgba(255, 255, 255, .72); transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.icon-btn { width: 40px; display: grid; place-items: center; padding: 0; }
.icon-btn svg { width: 17px; height: 17px; stroke: currentColor; }
.quiet-btn { padding: 8px 15px; font-size: 14px; font-weight: 550; }
.icon-btn:hover, .quiet-btn:hover { border-color: var(--border-strong); background: #fff; }
.icon-btn:active, .quiet-btn:active { transform: scale(.97); }
.favorite-header-btn { position: relative; }
.favorite-count { position: absolute; right: -4px; top: -5px; min-width: 17px; height: 17px; padding: 0 3px; display: grid; place-items: center; border-radius: 99px; color: #fff; background: var(--blue); font-size: 10px; font-weight: 700; line-height: 1; }
.favorite-count:empty { display: none; }
.favorite-toggle { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-secondary); background: rgba(255,255,255,.72); cursor: pointer; font-size: 13px; font-weight: 600; transition: color .18s ease, background .18s ease, transform .18s ease, border-color .18s ease; }
.favorite-toggle:hover { color: var(--blue); border-color: rgba(33,105,206,.32); background: #fff; transform: translateY(-1px); }
.favorite-toggle.is-saved { color: var(--blue); border-color: rgba(33,105,206,.25); background: var(--blue-soft); }
.favorite-toggle svg { width: 17px; height: 17px; }
.favorite-toggle.is-saved svg { fill: currentColor; }
.favorite-toggle.is-compact { width: 36px; min-height: 36px; padding: 0; border-radius: 12px; }
.favorite-toggle.is-compact span { display: none; }

.app-main { min-height: 75vh; padding: 34px 0 72px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.42fr) minmax(340px, .58fr); gap: 18px; align-items: stretch; }
.hero-main { min-height: 470px; padding: clamp(40px, 5vw, 68px); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow-sm); overflow: hidden; position: relative; display: flex; flex-direction: column; justify-content: center; isolation: isolate; }
.hero-main::after { content: ""; position: absolute; right: -80px; bottom: -180px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(81, 163, 230, .19) 0, rgba(81, 163, 230, .07) 44%, transparent 70%); pointer-events: none; z-index: -1; }
.eyebrow { display: inline-flex; align-items: center; align-self: flex-start; gap: 8px; padding: 8px 12px; border: 1px solid rgba(61, 129, 213, .14); border-radius: 999px; color: #1b62ba; background: rgba(255, 255, 255, .54); font-size: 13px; font-weight: 650; letter-spacing: .015em; }
.hero h1 { margin: 23px 0 19px; max-width: 760px; font-size: clamp(50px, 6.2vw, 84px); line-height: 1.09; font-weight: 720; letter-spacing: -.058em; }
.hero-highlight { color: #185bb1; background: linear-gradient(110deg, #173f75 0%, #276fc9 75%, #4d96d9 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-lead { max-width: 690px; margin: 0; color: var(--text-secondary); font-size: 17px; line-height: 1.75; }
.hero-actions { margin-top: 26px; display: flex; gap: 10px; flex-wrap: wrap; position: relative; z-index: 1; }
.primary-btn, .secondary-btn { min-height: 44px; border: 0; border-radius: 999px; padding: 10px 19px; cursor: pointer; font-size: 14px; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: background .18s ease, transform .18s ease, box-shadow .18s ease; }
.primary-btn { color: #fff; background: var(--blue); }
.primary-btn:hover { background: var(--blue-hover); box-shadow: 0 7px 18px rgba(0, 113, 227, .18); }
.secondary-btn { color: var(--blue); background: var(--blue-soft); }
.secondary-btn:hover { background: #deedff; }
.primary-btn:active, .secondary-btn:active { transform: scale(.98); }
.hero-side { display: grid; grid-template-rows: minmax(0, 1fr) auto; gap: 18px; }
.hero-paper-preview { min-width: 0; border-radius: var(--radius-xl); padding: 20px; display: flex; flex-direction: column; justify-content: space-between; gap: 16px; cursor: pointer; overflow: hidden; transition: transform .28s cubic-bezier(.2,.75,.2,1), box-shadow .28s ease; }
.hero-paper-preview:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.hero-paper-preview img { display: block; width: 100%; height: auto; margin-top: 6px; border: 1px solid rgba(34, 65, 108, .08); border-radius: 15px; background: #fff; box-shadow: 0 16px 34px rgba(33, 64, 105, .17); transform: rotate(-1.2deg); transition: transform .35s cubic-bezier(.2,.75,.2,1); }
.hero-paper-preview:hover img { transform: rotate(0deg) translateY(-2px); }
.hero-paper-preview div { padding: 1px 7px 7px; }
.hero-paper-preview span { display: block; color: var(--blue); font-size: 11px; font-weight: 650; }
.hero-paper-preview strong { display: block; margin-top: 3px; font-size: 14px; font-weight: 630; }
.date-card, .visitor-card { border-radius: var(--radius-xl); background: var(--surface); padding: 28px; box-shadow: var(--shadow-sm); }
.date-card small, .visitor-card small { color: var(--text-secondary); font-size: 13px; }
.date-card strong { display: block; margin-top: 6px; font-size: 25px; font-weight: 650; letter-spacing: -.03em; }
.visitor-card { display: flex; flex-direction: column; justify-content: center; padding: 23px 26px; }
.hero-today { margin-top: 4px; color: var(--text-secondary); font-size: 11px; }
.visitor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 14px; }
.visitor-grid strong { display: block; color: var(--text); font-size: 28px; font-weight: 650; letter-spacing: -.04em; }
.visitor-grid span { color: var(--text-secondary); font-size: 12px; }

.section { margin-top: 76px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 20px; padding: 0 4px; }
.section-title small { color: var(--blue); font-size: 12px; font-weight: 650; letter-spacing: .045em; }
.section-title h2 { margin: 5px 0 0; font-size: clamp(30px, 3vw, 42px); font-weight: 680; letter-spacing: -.04em; }
.section-note { color: var(--text-secondary); font-size: 13px; line-height: 1.65; }
.text-link { border: 0; background: transparent; color: var(--blue); cursor: pointer; font-size: 14px; font-weight: 550; padding: 7px 0; }
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.pinned-paper-section { margin-top: 42px; }
.pinned-paper-card { display: grid; grid-template-columns: minmax(220px, 36%) minmax(0, 1fr) auto; align-items: center; gap: 30px; padding: 24px; border-radius: var(--radius-lg); overflow: hidden; cursor: pointer; transition: transform .28s cubic-bezier(.2,.75,.2,1), box-shadow .28s ease; }
.pinned-paper-card:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(0, 113, 227, .09); }
.pinned-paper-card h3 { margin: 9px 0 8px; font-size: clamp(19px, 2vw, 25px); font-weight: 650; letter-spacing: -.025em; line-height: 1.35; }
.pinned-paper-card p { margin: 0; color: var(--text-secondary); line-height: 1.65; font-size: 14px; }
.paper-thumb-frame { overflow: hidden; border: 1px solid rgba(35, 63, 94, .1); border-radius: 15px; background: #fff; box-shadow: 0 14px 32px rgba(35, 63, 94, .16); }
.paper-thumb-frame img { width: 100%; height: auto; display: block; }
.pinned-paper-kicker { display: inline-flex; align-items: center; gap: 7px; color: var(--blue); font-size: 12px; font-weight: 650; }
.pinned-paper-kicker svg { width: 15px; height: 15px; }
.paper-doi-label { display: inline-block; margin-top: 12px; color: #4f5d71; font-size: 12px; font-weight: 550; }
.pinned-arrow { color: var(--blue); font-size: 14px; font-weight: 600; white-space: nowrap; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; position: relative; z-index: 1; }
.stat-card { position: relative; padding: 20px 22px; border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-sm); cursor: pointer; transition: background .18s ease, transform .18s ease; }
.stat-icon { width: 30px; height: 30px; display: grid; place-items: center; margin-bottom: 9px; border-radius: 10px; background: rgba(0, 113, 227, .09); color: var(--blue); }
.stat-icon svg { width: 17px; height: 17px; }
.stat-card:hover { transform: translateY(-2px); background: var(--surface-soft); }
.stat-card strong { display: block; color: var(--text); font-size: 29px; font-weight: 650; letter-spacing: -.04em; }
.stat-card span { color: var(--text-secondary); font-size: 13px; }

.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.project-card { position: relative; overflow: hidden; min-height: 280px; border-radius: var(--radius-lg); background: var(--surface); padding: 30px; box-shadow: var(--shadow-sm); cursor: pointer; transition: transform .2s ease, box-shadow .2s ease; }
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.project-no { position: absolute; right: 72px; top: 12px; font-size: 66px; font-weight: 700; letter-spacing: -.06em; color: rgba(0, 0, 0, .035); }
.project-card > .favorite-toggle { position: absolute; top: 24px; right: 24px; z-index: 2; }
.project-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 17px; border-radius: 14px; color: var(--blue); background: var(--blue-soft); }
.project-icon svg { width: 23px; height: 23px; }
.project-meta { display: flex; gap: 8px; align-items: center; color: var(--text-secondary); font-size: 13px; }
.badge { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; background: var(--blue-soft); color: var(--blue); font-size: 12px; font-weight: 600; }
.project-card h3 { margin: 14px 0 11px; width: 84%; font-size: 24px; font-weight: 650; letter-spacing: -.03em; }
.project-card p { margin: 0; max-width: 90%; color: var(--text-secondary); line-height: 1.7; font-size: 14px; }
.tags { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 20px; }
.tag { padding: 5px 9px; border-radius: 999px; color: var(--text-secondary); font-size: 12px; background: var(--bg); }
.progress-wrap { margin-top: 24px; }
.progress-label { display: flex; justify-content: space-between; margin-bottom: 8px; color: var(--text-secondary); font-size: 12px; }
.progress-track { height: 6px; background: #e8e8ed; border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: inherit; background: var(--blue); }
.project-arrow { position: absolute; right: 28px; bottom: 27px; color: var(--blue); font-size: 13px; font-weight: 600; }

.achievement-list { display: grid; gap: 10px; }
.achievement-row { display: grid; grid-template-columns: 112px 1fr 170px 112px; gap: 20px; align-items: center; padding: 24px 26px; border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-sm); }
.achievement-featured { grid-template-columns: 205px 1fr 170px 112px; }
.achievement-clickable { cursor: pointer; transition: transform .18s ease, box-shadow .18s ease; }
.achievement-clickable:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.achievement-kind { color: var(--blue); font-size: 12px; font-weight: 650; }
.achievement-kind-label { display: flex; align-items: center; gap: 9px; }
.achievement-cover { width: 100%; height: auto; display: block; margin-bottom: 10px; border-radius: 9px; background: #fff; box-shadow: 0 8px 18px rgba(40, 68, 102, .15); }
.achievement-kind-icon { display: grid; place-items: center; flex: 0 0 34px; width: 34px; height: 34px; border-radius: 10px; background: var(--blue-soft); }
.achievement-kind-icon svg { width: 18px; height: 18px; }
.achievement-row h3 { margin: 0 0 6px; font-size: 19px; font-weight: 650; letter-spacing: -.02em; }
.achievement-row p { margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.65; }
.achievement-row.is-filtered-out { display: none; }
.achievement-row-end { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.achievement-venue { color: var(--text-secondary); font-size: 13px; }
.achievement-doi { display: inline-block; margin-top: 8px; color: var(--blue); font-size: 12px; }
.achievement-doi:hover { text-decoration: underline; text-underline-offset: 3px; }
.detail-back { margin: 10px 0 18px; }
.achievement-detail { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr); gap: 16px; }
.achievement-side { display: grid; gap: 16px; align-content: start; }
.paper-preview { display: block; padding: 10px; border-radius: var(--radius-lg); transition: transform .2s ease, box-shadow .2s ease; }
.paper-preview:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.paper-preview img { width: 100%; height: auto; display: block; border-radius: 12px; background: #fff; }
.paper-preview span { display: flex; align-items: center; gap: 6px; padding: 10px 5px 3px; color: var(--blue); font-size: 12px; font-weight: 600; }
.paper-preview svg { width: 14px; height: 14px; }
.achievement-detail-main, .achievement-meta-card { border-radius: var(--radius-xl); background: var(--surface); padding: clamp(28px, 4vw, 48px); box-shadow: var(--shadow-sm); }
.achievement-detail-main h1 { margin: 20px 0 12px; font-size: clamp(36px, 4.6vw, 58px); line-height: 1.12; font-weight: 700; letter-spacing: -.05em; }
.achievement-english-title { margin: 0; color: var(--text-secondary); font-size: 16px; line-height: 1.65; }
.achievement-authors { margin: 20px 0 0; color: var(--text); font-size: 13px; line-height: 1.7; }
.achievement-actions { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 28px; }
.citation-card { margin-top: 28px; padding: 20px; border: 1px solid var(--border); border-radius: 20px; background: rgba(255,255,255,.48); }
.citation-card-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.citation-card-head span { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 650; }
.citation-card-head svg { width: 17px; height: 17px; color: var(--blue); }
.citation-card-head small { color: var(--text-secondary); font-size: 11px; }
.citation-card p { margin: 14px 0 16px; color: var(--text-secondary); font-size: 13px; line-height: 1.75; overflow-wrap: anywhere; }
.citation-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.citation-actions .secondary-btn { min-height: 38px; padding: 0 14px; font-size: 12px; }
.achievement-meta-card { display: grid; align-content: start; gap: 0; }
.achievement-meta-card div { padding: 16px 0; border-top: 1px solid var(--border); }
.achievement-meta-card div:first-child { border-top: 0; padding-top: 0; }
.achievement-meta-card small { display: flex; align-items: center; gap: 7px; margin-bottom: 5px; color: var(--text-secondary); font-size: 12px; }
.achievement-meta-card small svg { width: 14px; height: 14px; color: var(--blue); }
.achievement-meta-card strong, .achievement-meta-card a { color: var(--text); font-size: 13px; line-height: 1.6; }
.achievement-meta-card a { color: var(--blue); }
.achievement-files-section { margin-top: 38px; }
.status-dot { display: inline-flex; gap: 7px; align-items: center; font-size: 12px; font-weight: 600; }
.status-dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); }

.resource-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.resource-card { position: relative; min-height: 210px; border-radius: var(--radius-lg); background: var(--surface); padding: 26px; box-shadow: var(--shadow-sm); cursor: pointer; transition: transform .2s ease, box-shadow .2s ease; }
.resource-card > .favorite-toggle { position: absolute; top: 24px; right: 24px; z-index: 2; }
.resource-card:first-child > .favorite-toggle { color: #fff; border-color: rgba(255,255,255,.35); background: rgba(255,255,255,.12); }
.resource-card:first-child > .favorite-toggle.is-saved { color: #fff; background: rgba(109,174,255,.4); }
.resource-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.resource-card:first-child { grid-column: span 2; background: linear-gradient(130deg, rgba(25, 48, 82, .96), rgba(26, 32, 48, .94)); color: #fff; }
.resource-card:first-child .resource-icon { background: #fff; color: #1d1d1f; }
.resource-card:first-child p { color: #c7c7cc; }
.resource-card:first-child .resource-count { color: #87c2ff; }
.resource-icon { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; color: var(--blue); background: var(--blue-soft); }
.resource-icon svg { width: 23px; height: 23px; }
.resource-card h3 { margin: 20px 0 7px; font-size: 21px; font-weight: 650; letter-spacing: -.025em; }
.resource-card p { margin: 0; min-height: 46px; color: var(--text-secondary); font-size: 13px; line-height: 1.65; }
.resource-count { display: block; margin-top: 18px; color: var(--blue); font-size: 13px; font-weight: 550; }

.two-col { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; }
.panel { border-radius: var(--radius-lg); background: var(--surface); padding: 26px; box-shadow: var(--shadow-sm); }
.panel h3 { margin: 0 0 16px; font-size: 20px; font-weight: 650; letter-spacing: -.02em; }
.recent-list { display: grid; }
.recent-item { display: grid; grid-template-columns: 1fr auto; gap: 16px; padding: 15px 0; border-top: 1px solid var(--border); cursor: pointer; }
.recent-item:first-child { border-top: 0; }
.recent-item strong { display: block; font-size: 14px; font-weight: 600; }
.recent-item small { color: var(--text-secondary); font-size: 12px; }
.recent-empty { padding: 18px 0; color: var(--text-secondary); font-size: 13px; }

.page-title { padding: 30px 4px 20px; }
.page-title small { color: var(--blue); font-size: 13px; font-weight: 650; letter-spacing: .045em; }
.page-title h1 { margin: 8px 0 12px; font-size: clamp(44px, 6vw, 72px); font-weight: 700; letter-spacing: -.055em; line-height: 1.05; }
.page-title p { max-width: 780px; margin: 0; color: var(--text-secondary); font-size: 16px; line-height: 1.75; }

.tabs { display: flex; gap: 3px; padding: 4px; width: max-content; max-width: 100%; overflow-x: auto; background: #e8e8ed; border-radius: 13px; margin: 22px 0; }
.tab { border: 0; background: transparent; padding: 9px 15px; border-radius: 10px; cursor: pointer; white-space: nowrap; color: var(--text-secondary); font-size: 14px; font-weight: 550; }
.tab.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 6px rgba(0, 0, 0, .08); }
.achievement-filters { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 10px 0 19px; }
.filter-chip { min-height: 35px; display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-secondary); background: rgba(255,255,255,.55); cursor: pointer; font-size: 12px; font-weight: 600; transition: color .18s ease, background .18s ease, border-color .18s ease; }
.filter-chip:hover { color: var(--blue); background: #fff; }
.filter-chip.is-active { color: #fff; border-color: var(--blue); background: var(--blue); }
.filter-chip span { opacity: .7; font-variant-numeric: tabular-nums; }

.project-detail { border-radius: var(--radius-xl); background: var(--surface); padding: 34px; margin-top: 18px; box-shadow: var(--shadow-sm); }
.detail-quick-actions { display: flex; justify-content: flex-end; gap: 9px; flex-wrap: wrap; margin: 14px 0 0; }
.detail-quick-actions .ui-icon { width: 16px; height: 16px; }
.detail-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 34px; }
.detail-grid h2 { margin: 12px 0; font-size: 30px; font-weight: 680; letter-spacing: -.035em; }
.detail-grid p { color: var(--text-secondary); line-height: 1.75; }
.highlight-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; }
.highlight-list li { padding: 13px 15px; border-radius: var(--radius-sm); background: var(--surface-soft); font-size: 14px; }

.file-toolbar { display: flex; justify-content: space-between; gap: 14px; align-items: center; margin: 18px 0; }
.file-breadcrumb { color: var(--text-secondary); font-size: 13px; }
.file-list { border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); box-shadow: var(--shadow-sm); }
.file-row { display: grid; grid-template-columns: minmax(0, 1fr) 110px 130px 132px; gap: 16px; align-items: center; padding: 16px 18px; border-top: 1px solid var(--border); }
.file-row:first-child { border-top: 0; }
.file-name { min-width: 0; display: flex; gap: 12px; align-items: center; }
.file-name > div { min-width: 0; }
.file-symbol { width: 38px; height: 38px; flex: 0 0 38px; border-radius: 11px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); font-size: 10px; font-weight: 700; }
.file-name strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 600; }
.file-meta { display: block; overflow: hidden; text-overflow: ellipsis; color: var(--text-secondary); font-size: 12px; }
.file-actions { display: flex; justify-content: flex-end; gap: 6px; }
.file-action { border: 0; border-radius: 999px; padding: 8px 11px; background: #ececf0; cursor: pointer; font-size: 12px; font-weight: 550; }
.file-action:hover { background: #dedee3; }
.connection-note { padding: 13px 16px; border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 12px; margin-bottom: 12px; background: #ececf0; }

.timeline { position: relative; margin-top: 34px; }
.timeline::before { content: ""; position: absolute; left: 92px; top: 0; bottom: 0; width: 1px; background: var(--border-strong); }
.timeline-item { display: grid; grid-template-columns: 74px 36px 1fr; gap: 10px; margin-bottom: 26px; }
.timeline-date { color: var(--text-secondary); font-size: 12px; padding-top: 4px; }
.timeline-dot { position: relative; }
.timeline-dot::before { content: ""; position: absolute; left: 13px; top: 3px; width: 9px; height: 9px; border: 3px solid var(--bg); border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 1px var(--blue); }
.timeline-content { padding: 0 0 20px 4px; }
.timeline-content h3 { margin: 9px 0 5px; font-size: 20px; font-weight: 650; letter-spacing: -.02em; }
.timeline-content p { margin: 0; color: var(--text-secondary); line-height: 1.7; font-size: 13px; }

.site-footer { display: flex; justify-content: space-between; gap: 20px; align-items: flex-end; padding: 30px 4px 42px; border-top: 1px solid var(--border); color: var(--text-secondary); font-size: 12px; }
.site-footer strong { display: block; margin-bottom: 4px; color: var(--text); font-size: 15px; font-weight: 600; }
.footer-meta { display: flex; gap: 18px; }

.modal { width: min(720px, calc(100% - 28px)); border: 1px solid rgba(255, 255, 255, .9); border-radius: 26px; padding: 26px; background: rgba(250, 253, 255, .88); -webkit-backdrop-filter: blur(28px); backdrop-filter: blur(28px); color: var(--text); box-shadow: 0 30px 90px rgba(23, 48, 83, .24); }
.modal::backdrop { background: rgba(0, 0, 0, .25); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.modal-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 20px; }
.modal-head small { color: var(--blue); font-size: 12px; font-weight: 650; }
.modal-head h2 { margin: 4px 0 0; font-size: 27px; font-weight: 680; letter-spacing: -.035em; }
.search-input { width: 100%; border: 1px solid transparent; border-radius: 14px; padding: 14px 15px; background: #f0f0f3; outline: none; }
.search-input:focus { border-color: rgba(0, 113, 227, .4); box-shadow: 0 0 0 4px rgba(0, 113, 227, .10); background: #fff; }
.search-results { max-height: 55vh; overflow-y: auto; margin-top: 12px; }
.search-result { display: block; width: 100%; padding: 14px 8px; border: 0; border-top: 1px solid var(--border); background: transparent; color: var(--text); text-align: left; cursor: pointer; }
.search-result:first-child { border-top: 0; }
.search-result:hover, .search-result:focus-visible { background: var(--surface-soft); outline: 2px solid var(--blue); outline-offset: -2px; border-radius: 8px; }
.search-result strong { display: block; font-size: 13px; font-weight: 600; }
.search-result small { color: var(--text-secondary); font-size: 12px; }
.favorite-list { display: grid; gap: 8px; max-height: 55vh; overflow-y: auto; margin-top: 14px; }
.favorite-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; border: 1px solid var(--border); border-radius: 15px; background: rgba(255,255,255,.62); }
.favorite-open { min-width: 0; display: flex; align-items: center; gap: 12px; padding: 12px; border: 0; background: transparent; text-align: left; cursor: pointer; }
.favorite-open > span:first-child { flex: 0 0 36px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 11px; color: var(--blue); background: var(--blue-soft); }
.favorite-open svg { width: 18px; height: 18px; }
.favorite-open strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 620; }
.favorite-open small { color: var(--text-secondary); font-size: 11px; }
.favorite-remove { width: 34px; height: 34px; margin-right: 10px; border: 0; border-radius: 10px; color: var(--text-secondary); background: transparent; cursor: pointer; font-size: 22px; }
.favorite-remove:hover { color: var(--blue); background: var(--blue-soft); }
.favorite-empty { padding: 24px 8px; color: var(--text-secondary); font-size: 13px; line-height: 1.7; }
.share-field { display: flex; gap: 9px; align-items: center; margin: 8px 0 12px; }
.share-field input { min-width: 0; flex: 1; background: rgba(255,255,255,.9); }
.share-field .primary-btn { flex: 0 0 auto; }

.admin-login, .upload-form { display: grid; gap: 15px; }
label > span { display: block; margin-bottom: 7px; color: var(--text-secondary); font-size: 12px; }
input, select { width: 100%; border: 1px solid transparent; border-radius: 12px; padding: 12px 13px; background: #f0f0f3; outline: none; }
input:focus, select:focus { border-color: rgba(0, 113, 227, .4); box-shadow: 0 0 0 4px rgba(0, 113, 227, .10); background: #fff; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-hint { margin: 0; color: var(--text-secondary); font-size: 11px; line-height: 1.6; }
.drop-zone { min-height: 176px; display: grid; place-items: center; align-content: center; gap: 7px; border: 1.5px dashed var(--border-strong); border-radius: var(--radius-md); background: var(--surface-soft); cursor: pointer; text-align: center; }
.drop-zone.dragging { border-color: var(--blue); background: var(--blue-soft); }
.drop-icon { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); color: #fff; font-size: 24px; }
.drop-zone strong { font-size: 14px; font-weight: 600; }
.drop-zone small { color: var(--text-secondary); font-size: 12px; }
.upload-actions { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.hidden { display: none !important; }

.toast { position: fixed; right: 24px; bottom: 24px; z-index: 100; padding: 12px 17px; border-radius: 999px; color: #fff; background: rgba(29, 29, 31, .94); box-shadow: 0 16px 45px rgba(0, 0, 0, .2); font-size: 13px; animation: toastIn .2s ease; }
@keyframes toastIn { from { transform: translateY(8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Translucent glass over a quiet blue backdrop; text stays on a bright layer. */
.glass-surface {
  background: linear-gradient(145deg, rgba(255, 255, 255, .75), rgba(248, 252, 255, .47));
  border: 1px solid rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: saturate(170%) blur(32px);
  backdrop-filter: saturate(170%) blur(32px);
  box-shadow: 0 22px 52px rgba(46, 79, 126, .13), inset 0 2px 1px rgba(255, 255, 255, 1), inset 0 -1px 1px rgba(255, 255, 255, .56);
}
.hero-main.glass-surface { background: linear-gradient(138deg, rgba(255, 255, 255, .84), rgba(246, 251, 255, .55) 72%, rgba(219, 239, 255, .48)); }
.hero-paper-preview.glass-surface { background: linear-gradient(148deg, rgba(255, 255, 255, .82), rgba(221, 235, 255, .51)); }
.visitor-card.glass-surface { background: linear-gradient(135deg, rgba(255, 255, 255, .76), rgba(236, 230, 255, .45)); }
.pinned-paper-card.glass-surface { background: linear-gradient(115deg, rgba(227, 241, 255, .76), rgba(255, 255, 255, .56)); }
.resource-card:first-child.glass-surface { border-color: rgba(255, 255, 255, .18); background: linear-gradient(130deg, rgba(25, 48, 82, .94), rgba(26, 32, 48, .9)); }
.resource-card:first-child .resource-icon { color: #d9ebff; background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .2); }
.label-with-icon { display: inline-flex; align-items: center; gap: 7px; }
.ui-icon { width: 17px; height: 17px; flex: 0 0 auto; }
.eyebrow .ui-icon { width: 15px; height: 15px; }
.badge-with-icon { gap: 6px; }
.badge-with-icon .ui-icon { width: 14px; height: 14px; }
.achievement-actions .ui-icon { width: 16px; height: 16px; }
.panel, .project-detail, .file-list { border: 1px solid rgba(255, 255, 255, .88); background: rgba(255, 255, 255, .69); -webkit-backdrop-filter: blur(22px); backdrop-filter: blur(22px); box-shadow: var(--shadow-sm), inset 0 1px rgba(255, 255, 255, .96); }
.stat-card, .project-card, .resource-card, .achievement-row { transition: transform .28s cubic-bezier(.2,.75,.2,1), box-shadow .28s ease, border-color .28s ease; }
.stat-card:hover, .project-card:hover, .resource-card:hover, .achievement-clickable:hover { border-color: rgba(255, 255, 255, 1); box-shadow: var(--shadow-md); }
.text-link, .file-action { transition: color .2s ease, background .2s ease, transform .2s ease; }
.text-link:hover { color: #124d9c; transform: translateX(2px); }

.scroll-reveal { opacity: 0; transform: translate3d(0, 26px, 0); transition: opacity .72s cubic-bezier(.2,.75,.2,1), transform .72s cubic-bezier(.2,.75,.2,1); }
.scroll-reveal.is-visible { opacity: 1; transform: translate3d(0, 0, 0); }

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass-surface, .site-header { background: rgba(255, 255, 255, .95); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .scroll-reveal { opacity: 1 !important; transform: none !important; }
  .site-header.is-hidden { opacity: 1; transform: none; pointer-events: auto; }
}

@media (max-width: 1050px) {
  .site-header { grid-template-columns: 1fr auto; }
  .main-nav { order: 3; grid-column: 1 / -1; width: 100%; justify-content: center; overflow-x: auto; }
  .hero { grid-template-columns: 1fr; }
  .hero-side { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .achievement-row { grid-template-columns: 96px 1fr 140px; }
  .achievement-featured { grid-template-columns: 175px 1fr 140px; }
  .achievement-row > div:last-child { grid-column: 2 / -1; }
  .achievement-detail { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .page-shell { width: min(100% - 20px, 1280px); }
  .site-header { top: 7px; margin-top: 7px; min-height: 58px; grid-template-columns: minmax(0, 1fr) auto; border-radius: 17px; padding: 7px 8px; gap: 10px; }
  .brand-mark { width: 38px; height: 38px; flex-basis: 38px; }
  .brand small { display: none; }
  .brand strong { font-size: 14px; }
  .brand-extended, .site-header .main-nav { display: none; }
  .header-actions .quiet-btn { display: inline-flex; align-items: center; min-height: 40px; padding: 7px 11px; font-size: 13px; }
  .mobile-nav { position: fixed; left: 50%; bottom: calc(10px + env(safe-area-inset-bottom)); z-index: 80; transform: translateX(-50%); width: min(520px, calc(100% - 20px)); padding: 6px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 2px; border: 1px solid rgba(255, 255, 255, .96); border-radius: 20px; background: linear-gradient(135deg, rgba(255, 255, 255, .86), rgba(237, 246, 255, .75)); -webkit-backdrop-filter: saturate(180%) blur(34px); backdrop-filter: saturate(180%) blur(34px); box-shadow: 0 16px 44px rgba(34, 67, 112, .22), inset 0 1px rgba(255, 255, 255, 1); }
  .mobile-nav .nav-link { min-width: 0; min-height: 56px; padding: 5px 2px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; border-radius: 14px; font-size: 12px; font-weight: 600; line-height: 1.15; }
  .mobile-nav .nav-link svg { width: 19px; height: 19px; flex: 0 0 19px; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
  .mobile-nav .nav-link.active { box-shadow: 0 4px 14px rgba(33, 89, 162, .16); }
  .app-main { padding-top: 34px; }
  .hero-main { min-height: 0; padding: 42px 27px; }
  .hero h1 { font-size: clamp(44px, 13.5vw, 58px); }
  .hero-lead { font-size: 15px; }
  .hero-actions .secondary-btn:last-child { display: none; }
  .hero-side { grid-template-columns: 1fr; }
  .hero-paper-preview { min-height: 235px; }
  .visitor-grid { gap: 8px; }
  .visitor-grid strong { font-size: 23px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid, .resource-grid, .two-col, .detail-grid { grid-template-columns: 1fr; }
  .resource-card:first-child { grid-column: auto; }
  .pinned-paper-card { grid-template-columns: 1fr; gap: 15px; padding: 18px; }
  .pinned-paper-card .paper-thumb-frame { max-width: 100%; }
  .achievement-row { grid-template-columns: 1fr; gap: 8px; padding: 22px; }
  .achievement-featured { grid-template-columns: 1fr; }
  .achievement-cover { max-width: 360px; }
  .achievement-row > div:last-child { grid-column: auto; }
  .achievement-detail-main, .achievement-meta-card { padding: 25px; }
  .achievement-detail-main h1 { font-size: 37px; }
  .section { margin-top: 56px; }
  .section-head { align-items: flex-start; }
  .file-toolbar { align-items: flex-start; flex-direction: column; }
  .file-row { grid-template-columns: 1fr auto; }
  .file-row > .file-meta { display: none; }
  .file-actions { grid-column: 2; }
  .form-grid { grid-template-columns: 1fr; }
  .upload-actions { align-items: stretch; flex-direction: column; }
  .share-field { flex-direction: column; align-items: stretch; }
  .site-footer { align-items: flex-start; flex-direction: column; padding-bottom: calc(112px + env(safe-area-inset-bottom)); }
  .footer-meta { flex-direction: column; gap: 4px; }
  .toast { left: 18px; right: 18px; bottom: 18px; text-align: center; }
}

@media (max-width: 360px) {
  .brand { width: 100%; }
  .brand strong { max-width: 100px; font-size: 13px; }
  .hero-main { padding: 34px 24px; }
  .hero h1 { font-size: 43px; }
  .stat-card { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}