:root {
  --ink: #182521;
  --deep-ink: #0d1715;
  --paper: #eee7d6;
  --paper-bright: #f7f2e7;
  --mist: #dce5dc;
  --jade: #587e73;
  --jade-dark: #294c45;
  --gold: #c6a768;
  --gold-bright: #e2c98d;
  --cinnabar: #a94738;
  --muted: #8b8c7f;
  --line: rgba(34, 58, 52, 0.18);
  --serif: "FZKai-Z03", "STKaiti", "KaiTi", "Songti SC", serif;
  --song: "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", serif;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--deep-ink);
  color: var(--ink);
  font-family: var(--song);
}

body { overflow: hidden; }
button { font: inherit; }
button:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 4px; }

#mistCanvas {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: .45;
  mix-blend-mode: screen;
}

.screen {
  position: fixed;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .8s ease, visibility .8s;
}

.screen.is-active { opacity: 1; visibility: visible; pointer-events: auto; }
.is-hidden { display: none !important; }

.landing {
  background:
    linear-gradient(90deg, rgba(14, 24, 22, .78) 0%, rgba(14, 24, 22, .42) 38%, rgba(14, 24, 22, .04) 72%),
    linear-gradient(0deg, rgba(11, 18, 17, .55), transparent 42%),
    url("assets/canal-hero.png") center / cover no-repeat;
  color: var(--paper-bright);
}

.landing::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 72% 48%, transparent 0 26%, rgba(10, 19, 17, .22) 82%);
  pointer-events: none;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: .18;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.landing-nav,
.cinematic-nav,
.game-header {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 42px;
}

.seal {
  display: inline-grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(255, 244, 217, .66);
  background: rgba(151, 47, 38, .82);
  color: #f8e9cb;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1;
  transform: rotate(-2deg);
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.08);
}

.seal.mini { width: 38px; height: 38px; font-size: 20px; }

.text-button,
.icon-button,
.brand-button {
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.text-button { letter-spacing: .15em; font-size: 13px; opacity: .78; }
.text-button:hover { opacity: 1; }
.audio-icon { display: inline-block; margin-right: 7px; color: var(--gold-bright); }

.landing-copy {
  position: relative;
  z-index: 3;
  width: min(560px, calc(100vw - 48px));
  margin: 11vh 0 0 9vw;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-bright);
  font-size: 12px;
  letter-spacing: .35em;
  text-transform: uppercase;
}

.landing h1 {
  display: flex;
  align-items: center;
  gap: 15px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(70px, 9vw, 138px);
  font-weight: 400;
  line-height: .95;
  letter-spacing: .02em;
  text-shadow: 0 4px 30px rgba(0,0,0,.22);
}

.landing h1 i { width: 4px; height: 4px; border-radius: 50%; background: var(--gold-bright); opacity: .7; }
.landing-subtitle { margin: 24px 0 30px 3px; font-size: 20px; letter-spacing: .7em; }
.landing-intro { color: rgba(255,255,255,.72); font-size: 15px; line-height: 2; letter-spacing: .08em; }
.landing-actions { display: flex; align-items: center; gap: 18px; margin-top: 38px; }

.primary-button {
  position: relative;
  min-width: 188px;
  padding: 15px 32px;
  border: 1px solid rgba(238, 218, 174, .75);
  background: rgba(22, 46, 41, .82);
  color: #f3e8d1;
  cursor: pointer;
  overflow: hidden;
  transition: transform .25s, background .25s, box-shadow .25s;
}

.primary-button::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(226,201,141,.18);
}

.primary-button:hover { transform: translateY(-2px); background: #244d44; box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.primary-button span { position: relative; display: block; font-size: 20px; letter-spacing: .45em; text-indent: .45em; }
.primary-button small { position: relative; display: block; margin-top: 6px; opacity: .54; font-size: 8px; letter-spacing: .18em; }
.primary-button.compact { min-width: 150px; }
.primary-button.compact small { display: none; }

.ghost-button {
  padding: 13px 22px;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,.35);
  background: transparent;
  color: inherit;
  cursor: pointer;
  letter-spacing: .22em;
}
.ghost-button.light { color: #eee5d4; }

.landing-caption {
  position: absolute;
  z-index: 3;
  right: 40px;
  bottom: 38px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,.52);
  font-size: 10px;
  letter-spacing: .18em;
}
.landing-caption b { display: block; width: 76px; height: 1px; background: rgba(255,255,255,.28); }
.scroll-hint { position: absolute; z-index: 3; left: 22px; bottom: 104px; margin: 0; writing-mode: vertical-rl; color: rgba(255,255,255,.42); font-size: 10px; letter-spacing: .28em; }

.cinematic { color: var(--paper-bright); background: #101715; }
.cinematic-image { position: absolute; inset: 0; background: url("assets/canal-hero.png") center/cover; transition: filter 1s, transform 7s ease; transform: scale(1.04); }
.cinematic.is-active .cinematic-image { transform: scale(1); }
.cinematic-vignette { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(9,15,14,.84), rgba(9,15,14,.34) 56%, rgba(9,15,14,.5)), linear-gradient(0deg, rgba(9,15,14,.76), transparent 55%); }
.cinematic-nav { color: rgba(255,255,255,.64); font-size: 12px; letter-spacing: .2em; }
.cinematic-copy { position: absolute; z-index: 2; left: 9vw; bottom: 18vh; width: min(720px, 78vw); }
.cinematic-copy h2 { max-width: 690px; margin: 0 0 22px; font: 400 clamp(32px, 4.2vw, 66px)/1.35 var(--serif); letter-spacing: .06em; }
.cinematic-copy > p:not(.eyebrow) { max-width: 660px; color: rgba(255,255,255,.72); line-height: 1.9; font-size: 15px; }
.cinematic-copy blockquote { margin: 26px 0 0; padding-left: 20px; border-left: 2px solid var(--gold); font: 22px/1.6 var(--serif); color: var(--gold-bright); }
.cinematic-footer { position: absolute; z-index: 3; right: 44px; bottom: 40px; left: 9vw; display: flex; align-items: center; justify-content: space-between; }
.cinematic-dots { display: flex; gap: 10px; }
.cinematic-dots button { width: 24px; height: 2px; padding: 0; border: 0; background: rgba(255,255,255,.25); cursor: pointer; transition: width .3s, background .3s; }
.cinematic-dots button.is-active { width: 48px; background: var(--gold-bright); }
.round-button { width: 54px; height: 54px; border-radius: 50%; border: 1px solid rgba(255,255,255,.38); background: rgba(18,39,34,.65); color: white; font-size: 23px; cursor: pointer; transition: .25s; }
.round-button:hover { transform: translateX(3px); background: var(--jade-dark); }

.game-shell { background: var(--paper); }
.game-header { height: 72px; padding: 12px 26px; border-bottom: 1px solid var(--line); background: rgba(242,236,222,.94); }
.brand-button { display: flex; align-items: center; gap: 12px; text-align: left; }
.brand-button b { display: block; font: 22px var(--serif); letter-spacing: .22em; }
.brand-button small { display: block; margin-top: 2px; color: var(--muted); font-size: 7px; letter-spacing: .16em; }
.game-status { display: flex; align-items: center; gap: 14px; color: #6b6d63; font-size: 12px; letter-spacing: .12em; }
.game-status b { color: var(--cinnabar); font-size: 15px; }
.status-divider { width: 1px; height: 17px; background: var(--line); }
.icon-button { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; color: var(--jade-dark); transition: .2s; }
.icon-button:hover { border-color: var(--jade); background: rgba(76,111,101,.08); }
.archive-icon { border-radius: 2px; font-family: var(--serif); }

.voyage { display: grid; grid-template-columns: minmax(0, 1fr) 340px; height: calc(100vh - 152px); }
.scene-panel { position: relative; min-height: 0; overflow-y: auto; overflow-x: hidden; background: linear-gradient(90deg, rgba(236,230,214,.97) 0%, rgba(236,230,214,.88) 50%, rgba(236,230,214,.47) 100%), url("assets/canal-hero.png") center/cover; }
.scene-panel::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(37,70,61,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(37,70,61,.045) 1px, transparent 1px); background-size: 40px 40px; mask-image: linear-gradient(90deg, black, transparent 75%); }
.scene-wash { position: absolute; right: -8%; bottom: -18%; width: 62%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(72,113,101,.22), transparent 66%); filter: blur(10px); }
.scene-meta { position: relative; z-index: 1; display: flex; justify-content: space-between; padding: 28px 42px 0; color: #797b72; font-size: 11px; letter-spacing: .18em; }
.scene-content { position: relative; z-index: 2; width: min(680px, calc(100% - 80px)); margin: 7vh 0 50px 7vw; }
.scene-content h2 { margin: 0 0 20px; font: 400 clamp(38px, 4.3vw, 64px)/1.28 var(--serif); letter-spacing: .05em; }
.scene-narrative { max-width: 620px; color: #484b45; font-size: 15px; line-height: 2; letter-spacing: .035em; }
.scene-quote { margin: 24px 0; padding: 12px 0 12px 20px; border-left: 2px solid var(--cinnabar); color: var(--jade-dark); font: 20px/1.65 var(--serif); }
.water-mark { position: absolute; right: 4vw; top: 23%; color: rgba(42,77,69,.065); font: 190px var(--serif); transform: rotate(-12deg); }

.challenge { max-width: 610px; margin-top: 30px; }
.challenge-title { margin: 0 0 13px; color: #777a72; font-size: 11px; letter-spacing: .24em; }
.choice-grid { display: grid; gap: 9px; }
.choice-button { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 14px 18px; border: 1px solid rgba(47,79,70,.22); background: rgba(247,243,233,.72); color: var(--ink); text-align: left; cursor: pointer; transition: .2s; }
.choice-button span { margin-left: 18px; color: var(--cinnabar); opacity: 0; transform: translateX(-5px); transition: .2s; }
.choice-button:hover { border-color: var(--jade); background: rgba(255,252,244,.92); transform: translateX(3px); }
.choice-button:hover span { opacity: 1; transform: translateX(0); }
.choice-button:disabled { cursor: default; opacity: .68; transform: none; }
.choice-button.is-correct { border-color: var(--jade); background: rgba(87,126,115,.13); opacity: 1; }
.feedback { min-height: 24px; margin: 15px 0 0; color: var(--cinnabar); font-size: 13px; line-height: 1.7; }
.feedback.success { color: var(--jade-dark); }

.river-map { position: relative; z-index: 3; overflow-y: auto; overflow-x: hidden; padding: 30px 26px 24px; border-left: 1px solid var(--line); background: #e8e0cd; box-shadow: -18px 0 50px rgba(28,44,39,.07); }
.map-heading { display: flex; align-items: flex-end; justify-content: space-between; }
.map-heading .eyebrow { color: var(--cinnabar); }
.map-heading h2 { margin: 0; font: 26px var(--serif); letter-spacing: .08em; }
.map-heading > span { color: var(--jade); font: 20px var(--serif); }
.river-line { position: absolute; top: 114px; bottom: 55px; left: 47px; width: 2px; background: rgba(57,88,80,.14); }
.river-line i { display: block; width: 100%; height: 0; background: linear-gradient(var(--gold), var(--jade)); transition: height .8s ease; box-shadow: 0 0 9px rgba(82,130,116,.35); }
.route-nodes { position: relative; z-index: 1; display: grid; gap: 6px; margin: 28px 0 0; padding: 0; list-style: none; }
.route-node button { position: relative; display: grid; grid-template-columns: 32px 1fr auto; align-items: center; gap: 12px; width: 100%; padding: 10px 6px; border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer; }
.route-node button::before { content: ""; width: 13px; height: 13px; margin-left: 9px; border: 2px solid #a9a798; border-radius: 50%; background: #e8e0cd; box-shadow: 0 0 0 4px #e8e0cd; transition: .25s; }
.route-node small { display: block; color: #97958a; font-size: 9px; letter-spacing: .08em; }
.route-node strong { display: block; margin-top: 3px; font: 16px var(--serif); letter-spacing: .05em; }
.route-node em { color: #aaa89e; font-style: normal; font-size: 10px; }
.route-node.is-unlocked button::before { border-color: var(--gold); }
.route-node.is-complete button::before { border-color: var(--jade); background: var(--jade); box-shadow: 0 0 0 4px #e8e0cd, 0 0 15px rgba(54,101,88,.55); }
.route-node.is-current button { background: rgba(255,255,255,.34); }
.route-node.is-current strong { color: var(--cinnabar); }
.route-node.is-locked button { color: #aaa79d; cursor: not-allowed; }
.map-note { margin: 19px 0 0 44px; color: #99978d; font-size: 10px; letter-spacing: .08em; }

.dialogue-bar { position: absolute; right: 0; bottom: 0; left: 0; z-index: 5; display: grid; grid-template-columns: 58px 1fr auto; align-items: center; min-height: 80px; padding: 12px 32px; border-top: 1px solid rgba(205,190,158,.28); background: #172925; color: #eee6d7; }
.spirit-orb { position: relative; width: 48px; height: 48px; border: 1px solid rgba(205,188,147,.5); border-radius: 50%; background: radial-gradient(circle, rgba(203,190,145,.62), rgba(69,111,98,.18) 38%, transparent 65%); }
.spirit-orb i { position: absolute; inset: 8px; border: 1px solid rgba(226,205,151,.26); border-radius: 50%; animation: orbit 5s linear infinite; }
.spirit-orb i:nth-child(2) { inset: 15px; animation-direction: reverse; animation-duration: 3.8s; }
.spirit-orb i:nth-child(3) { inset: 20px; background: var(--gold-bright); box-shadow: 0 0 12px var(--gold); }
@keyframes orbit { to { transform: rotate(360deg) scale(1.08); } }
.dialogue-copy { padding-left: 14px; }
.dialogue-copy b { color: var(--gold-bright); font: 15px var(--serif); letter-spacing: .2em; }
.dialogue-copy p { margin: 5px 0 0; color: rgba(255,255,255,.68); font-size: 12px; letter-spacing: .08em; }
.next-chapter { padding: 12px 6px 12px 24px; border: 0; background: transparent; color: var(--paper-bright); cursor: pointer; letter-spacing: .15em; }
.next-chapter span { display: inline-grid; width: 34px; height: 34px; margin-left: 12px; place-items: center; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; }

.modal { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; opacity: 0; visibility: hidden; pointer-events: none; transition: .35s; }
.modal.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(10,18,16,.78); backdrop-filter: blur(7px); }
.modal-card { position: relative; width: min(920px, calc(100vw - 36px)); max-height: min(760px, calc(100vh - 36px)); overflow: auto; padding: 46px; background: #eee7d6; box-shadow: 0 28px 100px rgba(0,0,0,.34); }
.modal-card::before { content: ""; position: absolute; inset: 10px; border: 1px solid rgba(60,85,76,.15); pointer-events: none; }
.modal-close { position: absolute; z-index: 2; top: 15px; right: 18px; width: 34px; height: 34px; border: 0; background: transparent; color: #69736d; font-size: 25px; cursor: pointer; }
.modal-card h2 { margin: 0; font: 38px var(--serif); letter-spacing: .08em; }
.modal-lead { color: #77796f; font-size: 13px; }
.companion-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 32px; }
.companion { position: relative; min-height: 220px; padding: 24px 18px; border: 1px solid var(--line); background: rgba(250,247,238,.62); cursor: pointer; text-align: left; transition: .25s; }
.companion:hover { transform: translateY(-5px); border-color: var(--jade); box-shadow: 0 18px 40px rgba(49,68,61,.1); }
.companion .glyph { display: block; margin-bottom: 20px; color: rgba(46,78,68,.22); font: 68px var(--serif); line-height: 1; }
.companion b { display: block; font: 22px var(--serif); }
.companion small { display: block; margin: 8px 0 18px; color: var(--cinnabar); letter-spacing: .1em; }
.companion p { margin: 0; color: #73766e; font-size: 12px; line-height: 1.75; }

.archive-card { width: min(1080px, calc(100vw - 36px)); }
.archive-header { display: flex; align-items: flex-end; justify-content: space-between; }
.archive-header > p { color: #8a887e; font-size: 12px; }
.archive-header > p b { color: var(--cinnabar); font-size: 22px; }
.archive-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; margin-top: 28px; }
.archive-entry { min-height: 144px; padding: 17px; border: 1px solid var(--line); background: rgba(255,255,255,.36); }
.archive-entry.is-locked { filter: grayscale(1); opacity: .42; }
.archive-entry .archive-era { color: var(--cinnabar); font-size: 9px; letter-spacing: .15em; }
.archive-entry h3 { margin: 8px 0 8px; font: 20px var(--serif); }
.archive-entry p { margin: 0; color: #6f726a; font-size: 11px; line-height: 1.7; }
.archive-entry b { display: block; margin-top: 13px; color: var(--jade-dark); font-size: 11px; font-weight: 400; }

.ending-card { position: relative; width: min(720px, calc(100vw - 34px)); padding: 64px 54px; border: 1px solid rgba(231,210,164,.55); background: linear-gradient(rgba(17,37,32,.88), rgba(17,37,32,.94)), url("assets/canal-hero.png") center/cover; color: #efe6d4; text-align: center; box-shadow: 0 35px 120px rgba(0,0,0,.45); }
.ending-card h2 { margin: 0; font: 62px var(--serif); letter-spacing: .18em; text-indent: .18em; }
.ending-card > p:not(.eyebrow) { max-width: 540px; margin: 24px auto; color: rgba(255,255,255,.68); line-height: 2; }
.ending-seal { display: grid; width: 52px; height: 52px; margin: 28px auto; place-items: center; border: 1px solid #e5c990; background: rgba(157,58,45,.74); color: #f5e1ba; font: 28px var(--serif); }
.ending-card blockquote { margin: 20px 0 32px; color: var(--gold-bright); font: 20px var(--serif); }
.ending-actions { display: flex; justify-content: center; gap: 18px; }

@media (max-width: 900px) {
  .voyage { grid-template-columns: 1fr; height: calc(100vh - 146px); overflow: auto; }
  .scene-panel { min-height: 570px; overflow: visible; }
  .river-map { border-left: 0; border-top: 1px solid var(--line); }
  .river-line { top: 112px; }
  .route-nodes { grid-template-columns: repeat(2, 1fr); }
  .river-line { display: none; }
  .dialogue-bar { min-height: 74px; }
  .game-header { height: 72px; }
  .companion-grid, .archive-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .landing-nav, .cinematic-nav { padding: 20px; }
  .landing { background-position: 59% center; }
  .landing-copy { margin: 13vh 24px 0; }
  .landing h1 { font-size: clamp(58px, 22vw, 88px); gap: 8px; }
  .landing h1 i { display: none; }
  .landing-subtitle { margin-top: 18px; }
  .landing-actions { align-items: flex-start; flex-direction: column; }
  .landing-caption { right: 20px; bottom: 24px; }
  .scroll-hint { display: none; }
  .cinematic-copy { left: 24px; bottom: 16vh; width: calc(100vw - 48px); }
  .cinematic-copy h2 { font-size: 34px; }
  .cinematic-copy > p:not(.eyebrow) { font-size: 13px; }
  .cinematic-footer { right: 20px; left: 24px; bottom: 24px; }
  .game-header { padding: 10px 13px; }
  .brand-button small, .game-status > span, .status-divider { display: none; }
  .game-status { gap: 7px; }
  .scene-meta { padding: 22px 22px 0; }
  .scene-content { width: calc(100% - 44px); margin: 50px 22px; }
  .scene-content h2 { font-size: 40px; }
  .scene-narrative { font-size: 14px; }
  .scene-quote { font-size: 18px; }
  .route-nodes { grid-template-columns: 1fr; }
  .dialogue-bar { grid-template-columns: 44px 1fr auto; padding: 10px 13px; }
  .spirit-orb { width: 40px; height: 40px; }
  .dialogue-copy p { white-space: nowrap; max-width: 46vw; overflow: hidden; text-overflow: ellipsis; }
  .next-chapter { font-size: 0; padding-left: 4px; }
  .next-chapter span { font-size: 15px; margin-left: 0; }
  .modal-card { padding: 42px 24px 30px; }
  .companion-grid, .archive-grid { grid-template-columns: 1fr; }
  .companion { min-height: 160px; }
  .ending-card { padding: 48px 23px; }
  .ending-card h2 { font-size: 44px; }
  .ending-actions { flex-direction: column; }
}

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