:root {
  --ink: #18333a;
  --ink-soft: #4f676d;
  --ink-faint: #839196;
  --paper: #f4efe5;
  --paper-deep: #ebe3d4;
  --cream: #fffaf1;
  --sea: #157783;
  --sea-deep: #0b4956;
  --peach: #e69a9f;
  --line: rgba(24, 51, 58, 0.14);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --sans: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 560px at 6% -8%, rgba(230, 154, 159, 0.14), transparent 62%),
    radial-gradient(900px 600px at 100% 0%, rgba(21, 119, 131, 0.1), transparent 60%),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
h1, h2, h3, h4, p { margin: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 34px;
  border-bottom: 1px solid rgba(24, 51, 58, 0.08);
  background: rgba(244, 239, 229, 0.84);
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(21, 119, 131, 0.28);
  border-radius: 11px;
  color: var(--sea);
  background: rgba(21, 119, 131, 0.07);
  font: 700 17px/1 var(--mono);
}
.brand strong { display: block; font: 700 15px/1.1 var(--mono); letter-spacing: 0.12em; }
.brand small { display: block; margin-top: 4px; color: var(--ink-faint); font: 8px/1 var(--mono); letter-spacing: 0.1em; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 8px 11px;
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: 13px;
  transition: 0.18s ease;
}
.site-nav a:hover, .site-nav a.active { color: var(--sea); background: rgba(21, 119, 131, 0.07); }
.header-note { color: var(--ink-faint); font: 9px/1.4 var(--mono); letter-spacing: 0.08em; }
.menu-toggle { display: none; width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--cream); }
.menu-toggle span { display: block; width: 15px; height: 1px; margin: 4px auto; background: currentColor; }

.page-shell { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 540px;
  overflow: hidden;
  background: #0e3e4b;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url("/assets/hero-sea.jpg") center 46% / cover no-repeat;
  transform: scale(1.015);
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 33, 41, 0.22), rgba(6, 25, 32, 0.18) 40%, rgba(5, 18, 24, 0.78)),
    radial-gradient(600px 300px at 50% 20%, rgba(255, 213, 181, 0.22), transparent 70%);
}
.hero-inner { position: relative; z-index: 2; width: min(1080px, calc(100% - 48px)); margin: 0 auto; padding: 120px 0 76px; color: #fff; }
.eyebrow { display: block; color: rgba(255, 255, 255, 0.62); font: 10px/1.4 var(--mono); letter-spacing: 0.18em; }
.hero h1 { max-width: 820px; margin-top: 14px; font: 600 clamp(44px, 7vw, 86px)/1.08 var(--serif); letter-spacing: -0.05em; text-shadow: 0 10px 40px rgba(3, 20, 24, 0.42); }
.hero p { max-width: 560px; margin-top: 18px; color: rgba(255, 255, 255, 0.8); font-size: 15px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 40px;
  padding: 0 17px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 9px;
  color: #fff;
  background: rgba(12, 45, 51, 0.48);
  font-size: 13px;
  transition: 0.18s ease;
  backdrop-filter: blur(10px);
}
.button:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, 0.55); background: rgba(18, 63, 68, 0.66); }
.button.light { color: var(--sea-deep); border-color: transparent; background: var(--cream); }
.button.light:hover { background: #fff; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 34px; color: rgba(255, 255, 255, 0.48); font: 9px/1.4 var(--mono); letter-spacing: 0.08em; }
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 5px; height: 5px; border-radius: 50%; background: #8bd6bc; box-shadow: 0 0 8px rgba(139, 214, 188, 0.7); }

.content-sheet {
  position: relative;
  z-index: 3;
  margin-top: -34px;
  border-radius: 26px 26px 0 0;
  background: var(--paper);
  box-shadow: 0 -18px 50px rgba(5, 24, 28, 0.12);
}
.content-inner { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 30px; padding: 34px 0 64px; }
.profile-card {
  position: sticky;
  top: 92px;
  overflow: hidden;
  padding: 26px 22px 18px;
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 20px;
  color: var(--ink);
  background: linear-gradient(165deg, #f5fcfd, #e2f2f5 50%, #d8ebf1);
  box-shadow: 0 20px 54px rgba(34, 69, 72, 0.16);
}
.avatar {
  position: relative;
  display: grid;
  place-items: center;
  width: 120px;
  height: 120px;
  margin: 0 auto;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  color: #fff;
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 246, 222, 0.95), transparent 18%),
    radial-gradient(circle at 60% 20%, rgba(255, 201, 164, 0.8), transparent 32%),
    linear-gradient(160deg, #7dc2d2, #2e7f8a 54%, #e7a4a7);
  box-shadow: 0 12px 28px rgba(39, 100, 109, 0.22);
  font: 700 42px/1 var(--serif);
}
.avatar::after { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 50%; }
.profile-card .profile-label { margin-top: 16px; color: var(--ink-faint); font: 8px/1.4 var(--mono); letter-spacing: 0.14em; text-align: center; }
.profile-card h2 { margin-top: 3px; font: 600 25px/1.2 var(--serif); text-align: center; }
.profile-card > p { margin-top: 7px; color: var(--ink-soft); font-size: 11px; line-height: 1.8; text-align: center; }
.profile-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 22px; padding-top: 16px; border-top: 1px solid rgba(24, 51, 58, 0.1); }
.profile-stats div { text-align: center; }
.profile-stats strong { display: block; font: 600 23px/1 var(--serif); }
.profile-stats small { display: block; margin-top: 5px; color: var(--ink-faint); font-size: 9px; }
.profile-links { display: grid; gap: 6px; margin-top: 18px; padding-top: 14px; border-top: 1px solid rgba(24, 51, 58, 0.1); }
.profile-links a { color: var(--ink-soft); font-size: 10px; }
.profile-links a:hover { color: var(--sea); }

.feed { min-width: 0; }
.welcome {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 11px 15px;
  border: 1px dashed var(--line);
  border-radius: 11px;
  color: var(--ink-soft);
  background: rgba(255, 250, 241, 0.45);
  font-size: 12px;
}
.welcome a { margin-left: auto; color: var(--sea); font-size: 10px; white-space: nowrap; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin: 30px 0 14px; }
.kicker { color: var(--ink-faint); font: 9px/1.4 var(--mono); letter-spacing: 0.16em; }
.section-head h3 { margin-top: 5px; font: 600 24px/1.2 var(--serif); }
.section-head > a { display: inline-flex; align-items: center; gap: 5px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--sea); background: rgba(255, 250, 241, 0.6); font: 9px/1 var(--mono); }
.section-head > a:hover { border-color: var(--sea); background: var(--cream); }

.note-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.note-card {
  position: relative;
  display: flex;
  min-height: 172px;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  padding: 17px;
  border: 1px solid rgba(24, 51, 58, 0.12);
  border-radius: 14px;
  color: var(--ink);
  background: var(--cream);
  transition: 0.2s ease;
}
.note-card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 84% 10%, rgba(230, 154, 159, 0.22), transparent 38%); }
.note-card:hover { transform: translateY(-3px); border-color: rgba(21, 119, 131, 0.35); box-shadow: 0 16px 36px rgba(33, 76, 79, 0.1); }
.note-card .note-no { position: absolute; top: 14px; left: 15px; z-index: 1; color: var(--ink-faint); font: 9px/1 var(--mono); }
.note-card .note-type { position: absolute; top: 11px; right: 12px; z-index: 1; padding: 3px 6px; border-radius: 999px; color: var(--sea); background: rgba(21, 119, 131, 0.08); font-size: 9px; }
.note-card h4 { position: relative; z-index: 1; font: 600 17px/1.45 var(--serif); }
.note-card p { position: relative; z-index: 1; margin-top: 7px; color: var(--ink-soft); font-size: 11px; line-height: 1.7; }
.note-card .note-date { position: relative; z-index: 1; margin-top: 10px; color: var(--ink-faint); font: 8px/1.4 var(--mono); }

.system-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.system-card {
  display: flex;
  min-height: 134px;
  flex-direction: column;
  gap: 6px;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255, 250, 241, 0.72);
  transition: 0.18s ease;
}
.system-card:hover { transform: translateY(-2px); border-color: rgba(21, 119, 131, 0.38); }
.system-icon { color: var(--sea); font: 600 22px/1 var(--serif); }
.system-card strong { margin-top: auto; font-size: 13px; }
.system-card small { color: var(--ink-soft); font-size: 10px; line-height: 1.6; }
.system-card .system-tag { color: var(--ink-faint); font: 8px/1.4 var(--mono); }

.about-box { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255, 250, 241, 0.62); }
.about-box p { color: var(--ink-soft); font-size: 12px; line-height: 1.9; }
.about-box p + p { margin-top: 8px; }

.site-footer { margin-top: 20px; background: #0b3f4a; color: rgba(255, 255, 255, 0.8); }
.footer-inner { width: min(1080px, calc(100% - 48px)); margin: 0 auto; padding: 30px 0 24px; text-align: center; }
.footer-quote { color: #fffaf3; font: 600 19px/1.5 var(--serif); letter-spacing: 0.04em; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 14px; color: rgba(255, 255, 255, 0.58); font-size: 10px; }
.footer-links a { color: rgba(255, 255, 255, 0.78); }
.footer-links a:hover { color: #fff; }
.footer-icp { margin-top: 12px; color: rgba(255, 255, 255, 0.52); font-size: 10px; }
.footer-icp a { color: rgba(255, 255, 255, 0.72); }
.footer-copy { margin-top: 10px; color: rgba(255, 255, 255, 0.32); font: 8px/1.5 var(--mono); letter-spacing: 0.08em; }

.subpage { padding: 64px 0 70px; }
.subpage-head { max-width: 760px; }
.subpage-head h1 { margin-top: 10px; font: 600 clamp(38px, 5.5vw, 64px)/1.12 var(--serif); letter-spacing: -0.05em; }
.subpage-head p { margin-top: 14px; color: var(--ink-soft); font-size: 14px; line-height: 1.9; }
.article { max-width: 800px; margin-top: 28px; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--cream); }
.article + .article { margin-top: 14px; }
.article-meta { color: var(--ink-faint); font: 9px/1.4 var(--mono); letter-spacing: 0.06em; }
.article h2 { margin-top: 10px; font: 600 25px/1.4 var(--serif); }
.article p { margin-top: 10px; color: var(--ink-soft); font-size: 13px; line-height: 2; }
.article p + p { margin-top: 12px; }
.article strong { color: var(--ink); }
.back-link { display: inline-block; margin-top: 26px; color: var(--sea); font-size: 11px; }

.reveal { opacity: 0; transform: translateY(14px); transition: 0.6s cubic-bezier(0.22, 0.8, 0.2, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.petal-field { position: fixed; inset: 0; z-index: 5; overflow: hidden; pointer-events: none; }
.petal { position: absolute; top: -6%; width: 8px; height: 8px; border-radius: 80% 20% 80% 20%; background: linear-gradient(135deg, #ffc2d6, #e993b1); opacity: 0.28; animation: petal-fall linear infinite; }
@keyframes petal-fall {
  0% { transform: translate3d(0, -20px, 0) rotate(0); opacity: 0; }
  12% { opacity: 0.34; }
  88% { opacity: 0.18; }
  100% { transform: translate3d(34px, 105vh, 0) rotate(320deg); opacity: 0; }
}

@media (max-width: 900px) {
  .content-inner { grid-template-columns: 1fr; }
  .profile-card { position: relative; top: auto; max-width: 440px; }
  .note-grid, .system-grid { grid-template-columns: 1fr; }
  .hero { min-height: 460px; }
}
@media (max-width: 720px) {
  .site-header { padding: 12px 18px; }
  .header-note { display: none; }
  .site-nav {
    position: absolute;
    top: 66px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--cream);
    box-shadow: 0 18px 42px rgba(27, 65, 68, 0.14);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px 12px; }
  .menu-toggle { display: block; }
  .page-shell, .hero-inner, .footer-inner { width: calc(100% - 32px); }
  .hero-inner { padding: 88px 0 66px; }
  .hero h1 { font-size: clamp(38px, 12vw, 56px); }
  .hero p { font-size: 13px; }
  .content-sheet { margin-top: -22px; border-radius: 20px 20px 0 0; }
  .content-inner { padding-top: 24px; }
  .welcome { align-items: flex-start; flex-wrap: wrap; }
  .welcome a { margin-left: 20px; }
  .footer-inner { padding: 26px 0 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .petal { display: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .note-card, .system-card, .button { transition: none; }
}