:root {
  --white: #ffffff;
  --paper: #f7fbff;
  --paper-2: #edf8ff;
  --ink: #102a43;
  --text: #526577;
  --muted: #8a9aab;
  --blue-deep: #005ea8;
  --blue: #0a8edb;
  --cyan: #16b9e6;
  --green: #00bfa6;
  --lime: #9bc94a;
  --gold: #e9b54f;
  --coral: #e56d52;
  --line: rgba(10, 142, 219, 0.16);
  --shadow: 0 24px 60px rgba(5, 86, 148, 0.12);
  --shadow-soft: 0 14px 34px rgba(14, 82, 131, 0.09);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --header-h: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #ffffff 0%, #f9fdff 48%, #f4fbff 100%);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.page-bg { position: fixed; inset: 0; z-index: -5; pointer-events: none; overflow: hidden; }
.soft-orb { position: absolute; border-radius: 999px; filter: blur(10px); opacity: .72; }
.orb-a { width: 620px; height: 620px; right: -230px; top: 10px; background: radial-gradient(circle, rgba(0,191,166,.14), rgba(10,142,219,.08) 48%, transparent 70%); }
.orb-b { width: 520px; height: 520px; left: -240px; top: 420px; background: radial-gradient(circle, rgba(10,142,219,.12), rgba(0,191,166,.04) 56%, transparent 74%); }
.orb-c { width: 360px; height: 360px; right: 20%; bottom: 10%; background: radial-gradient(circle, rgba(155,201,74,.08), transparent 70%); }

.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(10, 142, 219, .08);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled { background: rgba(255,255,255,.96); box-shadow: 0 12px 34px rgba(15, 85, 135, .08); }
.header-shell {
  width: min(1220px, calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 14px; flex: 0 0 auto; }
.brand-logo { width: 54px; height: 54px; object-fit: contain; }
.brand-name { font-size: 22px; font-weight: 800; letter-spacing: .04em; color: var(--blue-deep); white-space: nowrap; }
.nav { display: flex; align-items: center; justify-content: center; gap: 8px; flex: 1 1 auto; }
.nav a { position: relative; padding: 10px 13px; font-size: 15px; color: #40566a; border-radius: 999px; transition: color .2s ease, background .2s ease; }
.nav a::after { content: ""; position: absolute; left: 18px; right: 18px; bottom: 5px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--green)); border-radius: 2px; transform: scaleX(0); transform-origin: center; transition: transform .2s ease; }
.nav a:hover, .nav a.active { color: var(--blue-deep); background: rgba(10,142,219,.06); }
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.header-actions a, .header-actions button { font-size: 14px; padding: 9px 17px; border-radius: 999px; transition: all .2s ease; border: 0; font-family: inherit; cursor: pointer; }
.header-actions .ghost { color: var(--blue-deep); background: #f2f8ff; }
.header-actions .solid { color: #fff; background: linear-gradient(135deg, var(--blue-deep), var(--blue)); box-shadow: 0 10px 24px rgba(0, 94, 168, .22); }
.header-actions .user-state { max-width: 320px; color: var(--blue-deep); background: rgba(238,248,255,.9); border: 1px solid rgba(10,142,219,.14); font-weight: 800; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: default; }
.header-actions a:hover, .header-actions button:hover { transform: translateY(-1px); }

main { min-height: 100vh; }
.page-panel { animation: panelIn .22s ease both; }
.page-panel:not(.is-active) { display: none; }
.hero-art {
  position: relative;
  overflow: hidden;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(10,142,219,.08);
  background:
    linear-gradient(180deg, rgba(235,248,255,.92) 0%, rgba(255,255,255,.85) 48%, rgba(234,250,255,.88) 100%);
}
.hero-art::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 75% 18%, rgba(0,191,166,.12), transparent 25%),
    radial-gradient(circle at 68% 45%, rgba(10,142,219,.13), transparent 32%),
    radial-gradient(circle at 18% 22%, rgba(10,142,219,.06), transparent 30%);
  z-index: 0;
}
.hero-gradient {
  position: absolute; inset: auto -12% -22% -12%; height: 42%; z-index: 1;
  background:
    radial-gradient(ellipse at 35% 45%, rgba(255,255,255,.9), rgba(255,255,255,0) 58%),
    linear-gradient(105deg, rgba(232,238,218,.45), rgba(178,234,246,.28) 35%, rgba(157,231,240,.45) 74%, rgba(255,255,255,0));
  border-radius: 50% 50% 0 0;
  transform: rotate(-2deg);
}
.hero-particles { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; opacity: .86; }
.hero-line-art { position: absolute; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.line { position: absolute; border: 1px solid rgba(0, 94, 168, .08); border-radius: 50%; }
.line-a { width: 720px; height: 230px; right: -220px; top: 108px; transform: rotate(-10deg); }
.line-b { width: 900px; height: 260px; right: -280px; bottom: 110px; transform: rotate(9deg); }
.line-c { width: 680px; height: 180px; left: -220px; bottom: 64px; transform: rotate(-8deg); }
.hero-shell {
  position: relative; z-index: 3;
  width: min(1220px, calc(100% - 56px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 480px;
  gap: 76px;
  align-items: center;
  padding: 82px 0 86px;
}
.section-eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--blue-deep); }
.section-eyebrow::before { content: ""; width: 30px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--blue), var(--green)); }
.slogan { margin: 22px 0 12px; font-size: clamp(50px, 6.4vw, 92px); line-height: .98; font-weight: 950; letter-spacing: .08em; }
.slogan-line { display: block; white-space: nowrap; }
.slogan-char { display: inline-block; position: relative; padding-right: .015em; text-shadow: 0 12px 28px rgba(0,94,168,.12); transform: skewX(-7deg); animation: sloganIn .9s ease both; }
.slogan-line:nth-child(2) .slogan-char { animation-delay: .12s; }
.slogan-char.c-blue { color: #137dda; }
.slogan-char.c-teal { color: #2e9fc1; }
.slogan-char.c-green { color: #74b761; }
.slogan-char.c-lime { color: #b8c944; }
.slogan-char.c-gold { color: #e4ae4c; }
.slogan-char.c-coral { color: #e06d55; }
.slogan-char::after { content: attr(data-char); position: absolute; inset: 0; transform: translate(2px, 2px); opacity: .08; color: #005ea8; z-index: -1; }
.hero-subtitle { margin: 22px 0 0; font-size: clamp(22px, 2.1vw, 32px); font-weight: 900; letter-spacing: .26em; color: #2d8cb2; }
.hero-desc { max-width: 560px; margin: 22px 0 0; color: var(--text); line-height: 1.9; font-size: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; justify-content: center; min-width: 132px; height: 46px; padding: 0 24px; border-radius: 999px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.btn::before { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 0%, rgba(255,255,255,.36) 45%, transparent 70%); transform: translateX(-120%); transition: transform .65s ease; }
.btn:hover::before { transform: translateX(120%); }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--blue-deep), var(--blue) 62%, var(--green)); box-shadow: 0 18px 36px rgba(0, 94, 168, .24); }
.btn-secondary { color: var(--blue-deep); background: rgba(255,255,255,.72); border: 1px solid rgba(0,94,168,.16); box-shadow: 0 12px 28px rgba(5,86,148,.08); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.meta-pill { padding: 8px 12px; border-radius: 999px; font-size: 13px; color: #477085; background: rgba(255,255,255,.62); border: 1px solid rgba(10,142,219,.12); backdrop-filter: blur(10px); }

.hero-emblem { min-height: 430px; display: flex; align-items: center; justify-content: center; }
.emblem-stage { position: relative; width: min(440px, 100%); aspect-ratio: 1; display: grid; place-items: center; perspective: 900px; }
.glass-disc { position: absolute; width: 88%; height: 88%; border-radius: 50%; background:
  radial-gradient(circle at 34% 25%, rgba(255,255,255,.94), rgba(255,255,255,.2) 30%, transparent 62%),
  linear-gradient(145deg, rgba(0,130,220,.12), rgba(0,191,166,.12));
  border: 1px solid rgba(255,255,255,.7); box-shadow: inset 0 12px 35px rgba(255,255,255,.58), 0 26px 72px rgba(0,94,168,.15); filter: blur(.1px); }
.emblem-logo { position: relative; z-index: 5; width: 70%; height: 70%; object-fit: contain; filter: drop-shadow(0 18px 28px rgba(0, 94, 168, .20)); animation: floatEmblem 5.8s ease-in-out infinite; }
.orbit { position: absolute; border-radius: 50%; border: 2px solid rgba(0,142,219,.22); transform-style: preserve-3d; }
.orbit-a { width: 96%; height: 40%; transform: rotate(-14deg); border-left-color: rgba(0,191,166,.26); animation: orbitPulse 5s ease-in-out infinite; }
.orbit-b { width: 82%; height: 34%; transform: rotate(36deg); border-right-color: rgba(229,109,82,.26); animation: orbitPulse 6.5s ease-in-out infinite reverse; }
.orbit-c { width: 104%; height: 44%; transform: rotate(70deg); border-top-color: rgba(155,201,74,.24); opacity: .65; }
.emblem-shadow { position: absolute; bottom: 24px; width: 64%; height: 42px; border-radius: 50%; background: radial-gradient(ellipse, rgba(0,94,168,.18), rgba(0,191,166,.08) 48%, transparent 70%); filter: blur(12px); }
.emblem-label { position: absolute; z-index: 7; right: 18px; bottom: 84px; padding: 8px 14px; border-radius: 999px; color: #0a6d9d; background: rgba(255,255,255,.74); border: 1px solid rgba(0,142,219,.14); font-size: 13px; font-weight: 800; box-shadow: 0 12px 26px rgba(0,94,168,.08); backdrop-filter: blur(12px); }

.section-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.section-soft { background: linear-gradient(180deg, rgba(247,251,255,.82), rgba(255,255,255,.76)); }
.guide-section, .category-section, .stage-section, .showcase-section, .notice-section { padding: 76px 0; }
.section-title-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 30px; }
.section-title-row.compact { align-items: center; }
.section-title { margin: 10px 0 0; font-size: clamp(30px, 3.2vw, 42px); line-height: 1.18; font-weight: 900; color: var(--ink); }
.section-intro { max-width: 520px; margin: 0; color: var(--text); line-height: 1.75; font-size: 15px; }
.section-intro.wide { max-width: 620px; margin-top: 18px; }
.center-title { text-align: center; max-width: 720px; margin: 0 auto 34px; }
.center-title .section-eyebrow { justify-content: center; }
.center-title .section-intro { margin: 14px auto 0; }
.guide-section .section-shell { width: min(1200px, calc(100% - 48px)); }
.guide-section .section-title-row { display: block; margin-bottom: 34px; text-align: center; }
.guide-section .section-eyebrow { justify-content: center; color: var(--blue); }
.guide-section .section-title { color: var(--blue-deep); }
.guide-grid {
  display: grid;
  gap: 0;
  padding: 32px 28px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(10,142,219,.12);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}
.guide-card {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 130px;
  gap: 38px;
  align-items: center;
  min-height: 104px;
  padding: 24px 10px;
  border-bottom: 1px solid rgba(16,42,67,.10);
}
.guide-card:last-child { border-bottom: 0; }
.guide-card:hover .guide-name { border-color: rgba(10,142,219,.36); box-shadow: 0 10px 24px rgba(5,86,148,.08); }
.guide-name {
  min-height: 56px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--blue-deep);
  background: #eef8ff;
  border: 1px solid rgba(10,142,219,.14);
  font-size: 17px;
  line-height: 1.35;
  font-weight: 900;
  text-align: center;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.guide-desc {
  margin: 0;
  color: var(--ink);
  line-height: 1.9;
  font-size: 15px;
}
.guide-action {
  min-width: 116px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: end;
  border-radius: 8px;
  color: #fff;
  background: #95a5b2;
  font-size: 14px;
  font-weight: 900;
  cursor: default;
  user-select: none;
}
.guide-card.is-highlight .guide-name {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
}
.guide-card.is-highlight .guide-action {
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
  box-shadow: 0 10px 20px rgba(0,94,168,.16);
}
.guide-icon, .category-icon { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; font-weight: 900; color: var(--blue-deep); background: linear-gradient(145deg, #eef8ff, #ffffff); border: 1px solid rgba(10,142,219,.14); box-shadow: inset 0 0 0 6px rgba(10,142,219,.035); }
.guide-card h3, .category-card h3, .stage-item h3, .showcase-item h3 { margin: 18px 0 8px; font-size: 20px; color: var(--ink); }
.guide-card p, .category-card p, .stage-item p, .showcase-item p { margin: 0; color: var(--text); line-height: 1.72; font-size: 14px; }
.guide-card .guide-desc { color: var(--ink); line-height: 1.9; font-size: 15px; }
.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.category-card { padding: 26px 18px; text-align: center; background: rgba(255,255,255,.86); border: 1px solid rgba(10,142,219,.12); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); transition: transform .22s ease, box-shadow .22s ease; }
.category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.category-icon { margin: 0 auto; color: var(--green); }
.timeline { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; padding-top: 34px; }
.timeline::before { content: ""; position: absolute; left: 4%; right: 4%; top: 58px; height: 2px; background: linear-gradient(90deg, rgba(10,142,219,.1), rgba(0,191,166,.38), rgba(10,142,219,.1)); }
.stage-item { position: relative; padding: 0 8px; text-align: center; }
.stage-dot { position: relative; z-index: 2; width: 50px; height: 50px; margin: 0 auto 18px; display: grid; place-items: center; color: #fff; font-weight: 900; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--green)); box-shadow: 0 12px 26px rgba(0,142,219,.22); }
.showcase-layout { display: grid; grid-template-columns: 44% 1fr; gap: 60px; align-items: center; }
.art-board { position: relative; overflow: hidden; min-height: 380px; border-radius: 38px; background: linear-gradient(135deg, rgba(228,247,255,.9), rgba(255,255,255,.9) 42%, rgba(224,249,244,.88)); border: 1px solid rgba(10,142,219,.12); box-shadow: var(--shadow); }
.art-wave { position: absolute; inset: 46% -20% auto -20%; height: 160px; border-radius: 50%; border-top: 24px solid rgba(0,191,166,.13); transform: rotate(-8deg); }
.art-circle { position: absolute; border-radius: 50%; }
.art-circle.one { width: 170px; height: 170px; right: 56px; top: 58px; background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(10,142,219,.18)); }
.art-circle.two { width: 110px; height: 110px; left: 54px; bottom: 62px; background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(0,191,166,.2)); }
.art-line { position: absolute; left: 48px; right: 48px; bottom: 98px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--green), transparent); }
.art-word { position: absolute; left: 54px; top: 54px; font-size: 74px; line-height: 1; font-weight: 900; color: rgba(0,94,168,.12); letter-spacing: .08em; }
.showcase-list { display: grid; gap: 16px; margin-top: 28px; }
.showcase-item { display: grid; grid-template-columns: 52px 1fr; gap: 16px; align-items: start; padding: 18px; border-radius: var(--radius-md); background: rgba(255,255,255,.82); border: 1px solid rgba(10,142,219,.1); }
.showcase-num { width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; font-weight: 900; color: var(--blue-deep); background: #eef8ff; }
.notice-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.home-notice-preview { position: relative; z-index: 3; padding: 54px 0 64px; background: linear-gradient(180deg, rgba(235,248,255,.62), rgba(255,255,255,.86)); }
.home-notice-preview-shell { width: min(1220px, calc(100% - 56px)); margin: 0 auto; }
.home-notice-preview-title { margin: 0 auto 28px; text-align: center; color: var(--blue-deep); }
.home-notice-preview-title span { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 900; letter-spacing: .18em; }
.home-notice-preview-title h2 { margin: 0; font-size: 26px; line-height: 1.25; font-weight: 950; }
.home-notice-preview-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.home-notice-preview .notice-item { box-shadow: 0 12px 30px rgba(5,86,148,.07); }
.home-notice-preview .notice-card-body { padding: 14px 16px 16px; }
.home-notice-preview .notice-title { min-height: 48px; font-size: 16px; }
.home-notice-preview .notice-cover { aspect-ratio: 16 / 7; }
.home-notice-more { width: fit-content; min-width: 132px; height: 42px; margin: 22px auto 0; display: flex; align-items: center; justify-content: center; border-radius: 999px; color: #fff; font-weight: 900; background: linear-gradient(135deg, var(--blue-deep), var(--blue) 62%, var(--green)); box-shadow: 0 14px 30px rgba(0,94,168,.18); }
.notice-empty { grid-column: 1 / -1; padding: 28px; color: var(--muted); text-align: center; background: rgba(255,255,255,.78); border: 1px solid rgba(10,142,219,.1); border-radius: 18px; }
.notice-item { overflow: hidden; background: rgba(255,255,255,.9); border: 1px solid rgba(10,142,219,.12); border-radius: 18px; box-shadow: 0 16px 36px rgba(5,86,148,.08); transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
.notice-item:hover { transform: translateY(-4px); border-color: rgba(0,191,166,.24); box-shadow: 0 22px 46px rgba(5,86,148,.12); }
.notice-cover { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; padding: 0; border: 0; background: #eef9ff; cursor: pointer; overflow: hidden; }
.notice-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.notice-cover-placeholder { width: 100%; height: 100%; display: grid; place-items: center; align-content: center; gap: 6px; color: var(--blue-deep); background: linear-gradient(135deg, #eaf8ff, #f7fcff 54%, #e8fbf7); }
.notice-cover-placeholder strong { font-size: 13px; letter-spacing: .18em; }
.notice-cover-placeholder em { font-style: normal; font-size: 22px; font-weight: 900; }
.notice-card-body { display: grid; gap: 10px; padding: 18px 18px 20px; }
.notice-date { color: var(--muted); font-size: 13px; font-weight: 800; }
.notice-title { display: -webkit-box; min-height: 52px; padding: 0; border: 0; color: var(--ink); background: transparent; font: inherit; font-size: 18px; line-height: 1.45; font-weight: 900; text-align: left; cursor: pointer; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.notice-title:hover { color: var(--blue-deep); }
.notice-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.notice-tag { display: inline-flex; width: fit-content; padding: 6px 10px; border-radius: 999px; color: var(--blue-deep); background: #eef8ff; font-size: 13px; font-weight: 800; }
.text-link { color: var(--blue-deep); font-weight: 800; }
.footer { padding: 34px 0; background: linear-gradient(135deg, #005ea8, #087fc2); color: rgba(255,255,255,.92); }
.footer-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 900; }
.footer-brand img { width: 42px; height: 42px; object-fit: contain; }
.footer-text { text-align: right; line-height: 1.8; font-size: 13px; opacity: .92; }
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 70;
  min-width: 108px;
  height: 44px;
  padding: 0 16px 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue) 62%, var(--green));
  box-shadow: 0 18px 38px rgba(0, 94, 168, .22);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(0, 12px, 0);
  transition: opacity .2s ease, transform .2s ease, box-shadow .2s ease;
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translate3d(0, 0, 0);
}
.back-to-top:hover { box-shadow: 0 22px 46px rgba(0, 94, 168, .28); transform: translate3d(0, -2px, 0); }
.back-to-top-icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--blue-deep);
  background: rgba(255,255,255,.92);
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 28px;
}
.auth-modal.is-open { display: flex; }
.is-hidden { display: none !important; }
.auth-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 24% 35%, rgba(10,142,219,.12), transparent 28%),
    radial-gradient(circle at 72% 20%, rgba(0,191,166,.12), transparent 26%),
    rgba(238, 250, 255, .66);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.auth-card {
  position: relative;
  z-index: 1;
  width: min(550px, calc(100vw - 36px));
  padding: 30px 30px 30px;
  border-radius: 30px;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255,255,255,.95), rgba(255,255,255,.84)),
    rgba(255,255,255,.9);
  border: 1px solid rgba(10,142,219,.15);
  box-shadow: 0 26px 72px rgba(5, 86, 148, .18), inset 0 1px 0 rgba(255,255,255,.8);
  animation: authCardIn .16s cubic-bezier(.18,.9,.28,1) both;
}

.home-notice-modal {
  position: fixed;
  inset: 0;
  z-index: 130;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 28px;
}
.home-notice-modal.is-open { display: flex; }
.home-notice-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 46, 80, .42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.home-notice-dialog {
  position: relative;
  z-index: 1;
  width: min(780px, calc(100vw - 36px));
  max-height: calc(100vh - 56px);
  overflow: auto;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 28px 76px rgba(5,86,148,.24);
}
.home-notice-close {
  position: absolute;
  right: 16px;
  top: 16px;
  z-index: 2;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  color: var(--blue-deep);
  background: rgba(255,255,255,.9);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(5,86,148,.12);
}
.home-notice-modal-cover { position: relative; aspect-ratio: 16 / 7; background: #eef9ff; overflow: hidden; }
.home-notice-modal-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.home-notice-modal-cover.is-placeholder img { display: none; }
.home-notice-modal-placeholder { display: none; width: 100%; height: 100%; place-items: center; align-content: center; gap: 8px; color: var(--blue-deep); background: linear-gradient(135deg, #eaf8ff, #f7fcff 54%, #e8fbf7); }
.home-notice-modal-cover.is-placeholder .home-notice-modal-placeholder { display: grid; }
.home-notice-modal-placeholder strong { font-size: 14px; letter-spacing: .22em; }
.home-notice-modal-placeholder span { font-size: 28px; font-weight: 900; }
.home-notice-dialog-body { padding: 28px 32px 32px; }
.home-notice-modal-date { color: var(--muted); font-size: 13px; font-weight: 800; margin-bottom: 10px; }
.home-notice-dialog h3 { margin: 0 0 18px; color: var(--ink); font-size: 26px; line-height: 1.35; }
.home-notice-modal-content { color: #36546b; font-size: 16px; line-height: 1.9; white-space: normal; }
.home-notice-attachments { display: grid; gap: 10px; margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(10,142,219,.12); }
.home-notice-attachments:empty { display: none; }
.home-notice-attachments-title { color: var(--ink); font-weight: 900; }
.home-notice-attachment { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 14px; border-radius: 12px; color: var(--blue-deep); background: #f1f9ff; font-weight: 800; }
.home-notice-attachment span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.home-notice-attachment em { flex: 0 0 auto; font-style: normal; color: var(--green); }
.auth-close {
  position: absolute;
  right: 18px;
  top: 16px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  color: var(--blue-deep);
  background: rgba(238,248,255,.92);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.form-kicker {
  margin: 0 0 6px;
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
}
.auth-title { margin: 0; color: var(--ink); font-size: 28px; line-height: 1.2; font-weight: 900; }
.auth-form { display: grid; gap: 16px; }
.auth-field { display: grid; gap: 7px; color: var(--text); font-size: 13px; font-weight: 700; }
.auth-field span { padding-left: 2px; }
.auth-field input {
  width: 100%;
  height: 46px;
  padding: 0 15px;
  border: 0;
  border-radius: 18px;
  outline: none;
  color: var(--ink);
  background: rgba(255,255,255,.82);
  box-shadow: 0 0 0 1px rgba(10,142,219,.15);
}
.auth-field input:focus { box-shadow: 0 0 0 2px rgba(10,142,219,.22); }
.auth-captcha-row { display: grid; grid-template-columns: 1fr 132px; gap: 10px; align-items: end; }
.auth-code {
  width: 132px;
  height: 46px;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(10,142,219,.15);
  border-radius: 18px;
  background: rgba(255,255,255,.82);
  cursor: pointer;
}
.auth-code img { display: none; width: 100%; height: 100%; object-fit: cover; }
.auth-code.has-image img { display: block; }
.auth-code.has-image span { display: none; }
.auth-code span { color: var(--blue-deep); font-size: 13px; font-weight: 700; }
.auth-options { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.remember-check { display: inline-flex; align-items: center; gap: 7px; color: var(--blue-deep); font-size: 13px; font-weight: 700; }
.register-link { color: var(--blue-deep); font-weight: 800; }
.auth-error { min-height: 18px; color: #d94b3d; font-size: 13px; line-height: 1.4; }
.auth-submit {
  width: 100%;
  height: 46px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue) 62%, var(--green));
  box-shadow: 0 18px 36px rgba(0,94,168,.24);
  cursor: pointer;
}
.auth-submit:disabled { opacity: .68; cursor: wait; }

@keyframes authCardIn {
  from { opacity: 0; transform: translateY(8px) scale(.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@keyframes floatEmblem { 0%, 100% { transform: translateY(0) rotateY(-7deg); } 50% { transform: translateY(-14px) rotateY(7deg); } }
@keyframes orbitPulse { 0%, 100% { opacity: .6; transform: rotate(-14deg) scale(1); } 50% { opacity: .95; transform: rotate(-8deg) scale(1.03); } }
@keyframes sloganIn { from { opacity: 0; transform: translateY(16px) skewX(-7deg); } to { opacity: 1; transform: translateY(0) skewX(-7deg); } }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

body.auth-open .hero-particles { opacity: .28; }
body.auth-open .emblem-logo,
body.auth-open .orbit,
body.auth-open .reveal {
  animation-play-state: paused !important;
}

@media (max-width: 1100px) {
  .header-shell { gap: 18px; }
  .brand-name { font-size: 19px; }
  .nav { display: none; }
  .hero-shell { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-meta { justify-content: center; }
  .hero-emblem { min-height: 360px; }
  .home-notice-preview-list { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .timeline { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 32px; }
  .timeline::before { display: none; }
  .showcase-layout { grid-template-columns: 1fr; }
  .guide-card { grid-template-columns: 210px minmax(0, 1fr); gap: 18px 26px; }
  .guide-action { grid-column: 2; justify-self: start; }
}
@media (max-width: 720px) {
  :root { --header-h: 72px; }
  .header-shell { width: min(100% - 28px, 640px); }
  .brand-name { font-size: 16px; max-width: 180px; white-space: normal; line-height: 1.25; }
  .brand-logo { width: 46px; height: 46px; }
  .header-actions a { padding: 8px 12px; }
  .header-actions .user-state { max-width: 155px; }
  .hero-art { min-height: auto; }
  .hero-shell { width: min(100% - 32px, 640px); padding: 58px 0 64px; }
  .slogan { font-size: clamp(44px, 14vw, 72px); letter-spacing: .04em; }
  .hero-subtitle { letter-spacing: .14em; font-size: 20px; }
  .hero-emblem { min-height: 300px; }
  .home-notice-preview { padding: 38px 0 46px; }
  .home-notice-preview-shell { width: min(100% - 32px, 640px); }
  .home-notice-preview .notice-cover { display: none; }
  .home-notice-preview .notice-title { min-height: auto; }
  .guide-grid, .category-grid, .timeline { grid-template-columns: 1fr; }
  .guide-section .section-shell { width: min(100% - 32px, 640px); }
  .guide-grid { padding: 12px 14px; }
  .guide-card { grid-template-columns: 1fr; gap: 12px; padding: 18px 0; }
  .guide-name { justify-content: flex-start; min-height: 52px; text-align: left; }
  .guide-action { grid-column: auto; justify-self: start; }
  .section-title-row, .footer-shell { flex-direction: column; align-items: flex-start; }
  .footer-text { text-align: left; }
  .notice-list { grid-template-columns: 1fr; }
  .notice-card-body { padding: 16px; }
  .notice-title { min-height: auto; font-size: 17px; }
  .back-to-top { right: 16px; bottom: 16px; min-width: 46px; width: 46px; height: 46px; padding: 0; }
  .back-to-top span:last-child { display: none; }
  .auth-modal { padding: 16px; align-items: flex-start; overflow-y: auto; }
  .auth-card { margin-top: 22px; padding: 28px 18px 22px; border-radius: 24px; }
  .auth-captcha-row { grid-template-columns: 1fr; }
  .auth-code { width: 100%; }
  .home-notice-modal { padding: 16px; align-items: flex-start; overflow-y: auto; }
  .home-notice-dialog { max-height: none; }
  .home-notice-modal-cover { aspect-ratio: 16 / 10; }
  .home-notice-dialog-body { padding: 22px 18px 24px; }
  .home-notice-dialog h3 { font-size: 22px; }
  .home-notice-attachment { align-items: flex-start; flex-direction: column; }
}

.home-notice{width:100%;padding:40px 0}
.home-notice-title{text-align:center;font-size:26px;font-weight:900;margin-bottom:26px}
.home-notice-grid{width:min(1220px,92%);margin:0 auto;display:grid;grid-template-columns:420px 1fr;gap:24px}
.notice-carousel{height:180px;background:rgba(255,255,255,.7);backdrop-filter:blur(16px);border-radius:18px}
.notice-ticker{height:180px;overflow:hidden;background:rgba(255,255,255,.6);border-radius:18px}
.ticker-track{position:absolute;animation:scrollUp 12s linear infinite}
@keyframes scrollUp{0%{transform:translateY(0)}100%{transform:translateY(-50%)}}
.notice-modal{position:fixed;inset:0;display:none;background:rgba(0,0,0,.45);justify-content:center;align-items:center}
.modal-content{background:#fff;padding:20px;border-radius:12px;width:480px}