/* Celestial Echoes: Cyrene × Robin. UI artwork is supplied by the owner. */
:root {
  --bg: #101025; --surface: #191a36; --surface2: #242642; --surface3: #303151;
  --line: #49496c; --soft: rgba(195,184,245,.17); --text: #f3f0ff; --muted: #b4b0ce;
  --cyan: #b9b9ff; --rose: #f0abc9; --gold: #e8d2a6; --green: #94dfd0; --red: #ff9bae;
  --shadow: 0 20px 60px rgba(4,4,24,.22);
}
[data-appearance="light"] {
  --bg: #f1eef8; --surface: #fcfaff; --surface2: #ebe7f5; --surface3: #e3dff0;
  --line: #c8bddf; --soft: rgba(103,83,148,.17); --text: #302645; --muted: #6c607d;
  --cyan: #6758b7; --rose: #a94c83; --gold: #8b653b; --green: #21796f; --red: #b93f63;
  --shadow: 0 16px 50px rgba(86,63,132,.08);
}
:root[data-duet-mode="cyrene"] { --cyan: #e1b7f4; --rose: #ffb4d4; }
:root[data-duet-mode="robin"] { --cyan: #a7c8ff; --rose: #c2b6ff; }
:root[data-appearance="light"][data-duet-mode="cyrene"] { --cyan: #8b53a2; --rose: #a94c83; }
:root[data-appearance="light"][data-duet-mode="robin"] { --cyan: #4f67a9; --rose: #7959aa; }
body { font-family: Manrope, "Microsoft YaHei", Arial, sans-serif; background: radial-gradient(ellipse at 15% 0%,rgba(170,119,208,.1),transparent 48%),radial-gradient(ellipse at 95% 15%,rgba(128,153,233,.1),transparent 44%),var(--bg); }
.shell::before { opacity: .18; background-image: radial-gradient(var(--muted) .65px,transparent .8px); background-size: 32px 32px; }
.content { max-width: 1680px; margin-inline: auto; }
.topbar { border-color: var(--soft); background: color-mix(in srgb,var(--bg) 88%,transparent); }
.brand-mark { border-radius: 12px; color: var(--rose); font: 26px/1 Georgia,serif; background: linear-gradient(135deg,color-mix(in srgb,var(--rose) 12%,transparent),color-mix(in srgb,var(--cyan) 10%,transparent)); }
.brand-mark:before,.brand-mark:after { display: none; }
.brand strong { letter-spacing: .7px; }
.brand small { letter-spacing: 1.7px; }
.tool { border-radius: 8px; }
.nav a { letter-spacing: .4px; }
.hero.duet-hero { display: grid; grid-template-columns: minmax(0,.83fr) minmax(0,1.17fr); min-height: 420px; overflow: hidden; isolation: isolate; background: linear-gradient(115deg,color-mix(in srgb,var(--surface) 94%,var(--rose)),var(--surface) 55%); border: 1px solid var(--line); border-radius: 22px 22px 0 0; }
.hero.duet-hero:before,.hero.duet-hero:after { display: none; }
.duet-copy { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-width: 0; padding: 34px 32px 30px 38px; }
.duet-eyebrow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--muted); font: 11px/1.5 "DM Mono",monospace; letter-spacing: 1.4px; }
.duet-spark { color: var(--rose); font-size: 20px; }
.eyebrow-line { width: 21px; height: 1px; background: var(--line); }
.duet-kicker { margin-top: 21px; color: var(--rose); font-size: 16px; letter-spacing: 4px; }
.hero.duet-hero h1 { margin: 10px 0 0; color: var(--text); font-family: "Noto Serif SC","Songti SC",SimSun,serif; font-size: clamp(43px,4.9vw,70px); font-weight: 600; letter-spacing: 6px; line-height: 1.2; }
.hero.duet-hero .duet-motto { margin: 12px 0 0; max-width: none; color: var(--cyan); font: 12px/1.7 "DM Mono",monospace; letter-spacing: 3px; }
.duet-motto span { color: var(--rose); margin-inline: 9px; }
.hero.duet-hero .duet-description { max-width: 410px; margin: 17px 0 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.duet-switch { display: flex; flex-wrap: wrap; gap: 5px; padding: 4px; margin-top: 24px; border: 1px solid var(--soft); border-radius: 11px; background: color-mix(in srgb,var(--bg) 35%,transparent); }
.duet-switch button { padding: 9px 17px; min-height: 40px; border: 1px solid transparent; border-radius: 7px; background: transparent; color: var(--muted); font-size: 14px; line-height: 1.4; cursor: pointer; transition: background .18s,color .18s; }
.duet-switch button:hover { color: var(--text); background: var(--surface2); }
.duet-switch button.active { color: var(--text); background: color-mix(in srgb,var(--cyan) 18%,var(--surface2)); border-color: color-mix(in srgb,var(--cyan) 35%,var(--line)); }
.duet-switch button:focus-visible,a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.duet-status { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 22px; color: var(--muted); font: 12px/1.6 "DM Mono",monospace; }
.duet-status strong { font-weight: 500; color: var(--text); }
.duet-status > i { height: 11px; width: 1px; margin-inline: 4px; background: var(--line); }
.duet-live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.duet-live-dot.online { background: var(--green); box-shadow: 0 0 0 4px color-mix(in srgb,var(--green) 10%,transparent); }
.duet-gallery { position: relative; display: flex; gap: 10px; min-width: 0; min-height: 420px; padding: 18px 18px 18px 0; }
.duet-portrait { position: relative; flex: 1; min-width: 0; margin: 0; border: 1px solid rgba(216,205,255,.24); border-radius: 14px; overflow: hidden; background: #333059; isolation: isolate; }
.duet-portrait:after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(180deg,rgba(16,12,40,.15),transparent 30%,transparent 53%,rgba(16,12,40,.85)); }
.duet-portrait img { display: block; position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease,filter .5s; }
.portrait-cyrene img { object-position: 53% center; }
.portrait-robin img { object-position: 61% center; }
.duet-portrait:hover img { transform: scale(1.035); }
.portrait-index { position: absolute; z-index: 2; top: 13px; left: 13px; padding: 5px 8px; border: 1px solid rgba(255,255,255,.24); border-radius: 5px; background: rgba(19,15,46,.4); color: #f5edff; font: 10px/1.4 "DM Mono",monospace; letter-spacing: 1px; backdrop-filter: blur(10px); }
.duet-portrait figcaption { position: absolute; z-index: 2; bottom: 21px; left: 22px; right: 15px; color: #fff5ff; }
.duet-portrait figcaption > span { display: block; color: #e5d5f5; font-size: 12px; letter-spacing: 2px; margin-bottom: 8px; }
.duet-portrait figcaption strong { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; font-family: "Noto Serif SC","Songti SC",SimSun,serif; font-size: 28px; font-weight: 500; letter-spacing: 3px; }
.duet-portrait figcaption small { font: 11px/1.5 "DM Mono",monospace; letter-spacing: 2px; color: #ded6ed; }
.duet-constellation { position: absolute; z-index: 3; left: calc(50% - 17px); top: 49%; font: 34px/1 Georgia,serif; color: #f3d4ed; text-shadow: 0 0 16px #b091f0; pointer-events: none; }
[data-duet-mode="cyrene"] .duet-constellation,[data-duet-mode="robin"] .duet-constellation { display: none; }
.hero[data-duet-mode="cyrene"] .portrait-cyrene img { object-position: 52% 48%; }
.hero[data-duet-mode="robin"] .portrait-robin img { object-position: 57% 42%; }
.stats { overflow: hidden; border-radius: 0 0 18px 18px; border-color: var(--line); background: var(--surface); }
.stat { background: transparent; }
.stat strong { font-size: 30px; }
.stat span { font-size: 12px; letter-spacing: .8px; }
.node,.side,.panel,.bill-card { border-radius: 14px; overflow: hidden; border-color: var(--line); }
.node { background: linear-gradient(130deg,color-mix(in srgb,var(--surface) 96%,var(--rose)),var(--surface)); }
.node:before { width: 3px; background: var(--line); }
.node.online:before { background: linear-gradient(var(--cyan),var(--rose)); }
.node:hover { border-color: var(--cyan); box-shadow: 0 8px 30px color-mix(in srgb,var(--cyan) 8%,transparent); }
.node-name { font-family: Manrope,"Microsoft YaHei",sans-serif; }
.node-top { padding-block: 19px 15px; }
.meters { padding-bottom: 18px; gap: 12px; }
.bar { height: 5px; border-radius: 8px; }
.bar i { border-radius: 8px; }
.section-head h2,.page-head h2 { font-weight: 600; letter-spacing: 1px; }
.phase { background: radial-gradient(ellipse at 20% 20%,color-mix(in srgb,var(--rose) 17%,var(--surface)),var(--surface)); }
.phase-stellar .phase-heart { background: color-mix(in srgb,var(--rose) 60%,var(--cyan)); }
.phase-stellar > small { color: var(--muted); }
.bill-card b { font-size: 31px; line-height: 1.2; }
.cost-row { gap: 16px; padding-block: 17px; }
.cost-row strong { font-size: 16px; }
.footer { margin-top: 36px; padding-block: 23px; gap: 10px; }
.footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.nav-mobile { border-radius: 16px 16px 0 0; }
.empty { color: var(--muted); }
@media (min-width: 1680px) { .hero.duet-hero { min-height: 460px; } .duet-gallery { min-height: 460px; } }
@media (max-width: 1120px) and (min-width: 781px) {
  .topbar { gap: 14px; padding-inline: 22px; }
  .brand small { display: none; }
  .brand strong { font-size: 17px; }
  .link-status { display: none; }
  .duet-copy { padding-inline: 25px; }
  .duet-eyebrow { font-size: 10px; letter-spacing: 1px; }
  .hero.duet-hero h1 { font-size: 45px; letter-spacing: 3px; }
  .duet-portrait figcaption { left: 14px; }
  .duet-portrait figcaption strong { font-size: 23px; gap: 6px; }
  .duet-portrait figcaption small { font-size: 10px; }
  .duet-switch button { padding-inline: 13px; }
}
@media (max-width: 780px) {
  .topbar { padding-inline: 12px; gap: 6px; }
  .brand strong { font-size: 15px; letter-spacing: 0; }
  .brand-mark { width: 31px; height: 31px; font-size: 23px; }
  .hero.duet-hero { grid-template-columns: minmax(0,1fr); min-height: 0; border-radius: 17px 17px 0 0; }
  .duet-copy { padding: 26px 23px 24px; }
  .duet-eyebrow { font-size: 10px; letter-spacing: .6px; gap: 6px; }
  .duet-eyebrow .eyebrow-line { width: 10px; }
  .duet-kicker { margin-top: 14px; font-size: 15px; letter-spacing: 3px; }
  .hero.duet-hero h1 { font-size: clamp(39px,10.4vw,56px); line-height: 1.22; letter-spacing: 4px; margin-top: 9px; }
  .hero.duet-hero .duet-motto { font-size: 11px; letter-spacing: 2.2px; margin-top: 9px; }
  .hero.duet-hero .duet-description { font-size: 15px; line-height: 1.8; margin-top: 13px; max-width: 100%; }
  .duet-switch { margin-top: 17px; }
  .duet-switch button { font-size: 14px; padding: 9px 16px; min-height: 40px; }
  .duet-status { margin-top: 17px; }
  .duet-gallery { height: 275px; min-height: 0; padding: 0 12px 12px; gap: 7px; }
  .duet-portrait { border-radius: 11px; }
  .duet-portrait figcaption { bottom: 16px; left: 14px; }
  .duet-portrait figcaption > span { font-size: 11px; letter-spacing: 1px; margin-bottom: 6px; }
  .duet-portrait figcaption strong { font-size: 23px; letter-spacing: 2px; gap: 8px; }
  .duet-portrait figcaption small { font-size: 9px; letter-spacing: 1px; }
  .portrait-index { top: 9px; left: 9px; font-size: 9px; padding: 4px 5px; letter-spacing: .3px; }
  .duet-constellation { font-size: 29px; left: calc(50% - 15px); top: 45%; }
  .stat strong { font-size: 25px; }
  .stat span { font-size: 12px; }
  .stats { border-radius: 0 0 15px 15px; }
  .grid { gap: 18px; }
  .meters { gap: 10px; }
  .footer { flex-direction: column; align-items: flex-start; line-height: 1.8; }
}
@media (max-width: 360px) {
  .brand strong { font-size: 13px; }
  .hero.duet-hero h1 { font-size: 37px; letter-spacing: 3px; }
  .duet-copy { padding-inline: 18px; }
  .duet-gallery { height: 245px; }
  .duet-portrait figcaption { left: 10px; }
  .duet-portrait figcaption strong { font-size: 21px; }
  .duet-portrait figcaption small { display: none; }
  .duet-eyebrow { font-size: 9px; }
}
@media (prefers-reduced-motion: reduce) { .duet-portrait img,.duet-switch button { transition: none; } }