/* ==========================================================
   瓷境 CIJING — One vessel, a thousand years
   ========================================================== */
@property --ink    { syntax: '<color>'; inherits: true; initial-value: #efe6d8; }
@property --muted  { syntax: '<color>'; inherits: true; initial-value: rgba(239,230,216,.62); }
@property --line   { syntax: '<color>'; inherits: true; initial-value: rgba(239,230,216,.18); }
@property --accent { syntax: '<color>'; inherits: true; initial-value: #e07a3c; }
@property --card   { syntax: '<color>'; inherits: true; initial-value: rgba(255,255,255,.04); }

:root {
  --f-cn: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --f-brush: 'Ma Shan Zheng', 'Noto Serif SC', serif;
  --f-en: 'Cormorant Garamond', 'Times New Roman', serif;
  --f-mono: 'DM Mono', ui-monospace, monospace;
  --pad-x: clamp(20px, 3.6vw, 64px);
  --hdr-h: 88px;
  --tl-h: 112px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- chapter themes ---------- */
body { --ink: #1b1712; --muted: rgba(27,23,18,.64); --line: rgba(27,23,18,.16); --card: rgba(255,255,255,.38); }
body.t-dark { --ink: #efe6d8; --muted: rgba(239,230,216,.62); --line: rgba(239,230,216,.16); --card: rgba(255,255,255,.035); }
body.t-0 { --accent: #e07a3c; }
body.t-1 { --accent: #36695a; }
body.t-2 { --accent: #1f3f8f; }
body.t-3 { --accent: #b0485d; }
body.t-4 { --accent: #d4472d; }
body.t-5 { --accent: #8a4b22; }
body.t-6 { --accent: #a9812f; }
body.t-7 { --accent: #2f5d50; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: #18110c;
  color: var(--ink);
  font-family: var(--f-cn);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  transition: --ink 1.2s var(--ease), --muted 1.2s var(--ease), --line 1.2s var(--ease), --accent 1.2s var(--ease), --card 1.2s var(--ease);
}
body:not(.is-touch), body:not(.is-touch) a, body:not(.is-touch) button { cursor: none; }
a { color: inherit; text-decoration: none; }
ol, ul { list-style: none; }
em { font-style: normal; }
::selection { background: var(--accent); color: #fff; }

/* ==========================================================
   LOADER
   ========================================================== */
.loader { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; color: #efe6d8; }
.loader__half { position: absolute; left: 0; right: 0; height: 50.5%; background: #0f0a07; }
.loader__half--top { top: 0; }
.loader__half--bot { bottom: 0; background: #0f0a07 radial-gradient(ellipse 60% 90% at 50% 100%, rgba(224,122,60,.22), transparent 70%); }
.loader__inner { position: relative; text-align: center; display: grid; justify-items: center; gap: 14px; }
.loader__vase { width: 110px; height: 190px; overflow: visible; }
.loader__vase path { fill: none; stroke: #e9c9a0; stroke-width: 2.2; filter: drop-shadow(0 0 8px rgba(224,122,60,.6)); }
.loader__seal { position: absolute; top: 72px; font-family: var(--f-brush); font-size: 34px; color: #b8322a; opacity: .9; }
.loader__title { font-size: 26px; letter-spacing: .5em; font-weight: 600; margin-top: 10px; }
.loader__title span { font-family: var(--f-en); font-style: italic; letter-spacing: .2em; font-weight: 300; opacity: .6; font-size: 18px; }
.loader__sub { font-family: var(--f-mono); font-size: 11px; letter-spacing: .24em; opacity: .5; text-transform: uppercase; }
.loader__count { font-family: var(--f-en); font-size: 64px; font-weight: 300; line-height: 1; margin-top: 12px; color: #f0b27a; }
.loader__count i { font-size: 22px; font-style: italic; margin-left: 4px; opacity: .7; }

/* ==========================================================
   STAGE LAYERS
   ========================================================== */
.stage { position: fixed; inset: 0; overflow: hidden; }
.bgs, .bg { position: absolute; inset: 0; }
.bgs { z-index: 0; }
.glyph {
  position: absolute; z-index: 1; right: 4vw; top: 50%; margin-top: -38vh;
  font-family: var(--f-brush); font-size: 76vh; line-height: 1; color: var(--ink); opacity: 1;
  pointer-events: none; user-select: none;
  -webkit-text-stroke: 0; mix-blend-mode: normal;
}
.glyph { color: transparent; -webkit-text-stroke: 1px var(--line); }
.particles { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; pointer-events: none; }
.fx { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.vase-wrap {
  position: absolute; z-index: 4; inset: 0; margin: auto;
  width: min(56vh, 36vw); height: min(58vh, 38vw);
  top: calc(var(--hdr-h) - var(--tl-h)); pointer-events: none;
}
.vase { width: 100%; height: 100%; overflow: visible; }
.scenes { position: absolute; inset: 0; z-index: 5; }
.grain {
  position: fixed; inset: -50%; z-index: 60; pointer-events: none; opacity: .09;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain { 0%{transform:translate(0,0)} 20%{transform:translate(-3%,2%)} 40%{transform:translate(2%,-4%)} 60%{transform:translate(-4%,-1%)} 80%{transform:translate(3%,3%)} 100%{transform:translate(0,0)} }

/* ---------- backgrounds per era ---------- */
.bg { opacity: 0; visibility: hidden; overflow: hidden; }
.bg.is-active { opacity: 1; visibility: visible; }

.bg-0 { background: radial-gradient(ellipse 80% 60% at 50% 110%, #5a2a12 0%, #2a1509 45%, #140d08 80%); }
.kiln-glow { position: absolute; left: 50%; bottom: -30vh; width: 90vw; height: 60vh; margin-left: -45vw; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255,140,60,.5), rgba(210,80,30,.18) 55%, transparent); filter: blur(30px); animation: flicker 3.2s ease-in-out infinite alternate; }
.bg-vignette { position: absolute; inset: 0; background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,.55)); }
@keyframes flicker { 0%{opacity:.7; transform:scale(1)} 30%{opacity:1} 55%{opacity:.8; transform:scale(1.04)} 100%{opacity:1; transform:scale(.98)} }

.bg-1 { background: linear-gradient(180deg, #dfe8e1 0%, #c3d4c9 45%, #a9bfb2 100%); }
.mist { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .7; background: radial-gradient(closest-side, #f4f7f3, transparent); animation: drift 26s ease-in-out infinite alternate; }
.m1 { width: 70vw; height: 30vh; left: -10vw; top: 8vh; }
.m2 { width: 60vw; height: 26vh; right: -14vw; top: 40vh; animation-duration: 34s; }
.m3 { width: 80vw; height: 30vh; left: 10vw; bottom: -8vh; background: radial-gradient(closest-side, rgba(95,138,121,.35), transparent); animation-duration: 40s; }
@keyframes drift { to { transform: translateX(8vw) translateY(-2vh); } }

.bg-2 { background: #f2f0e9; }
.bg-2::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 50% 60% at 50% 45%, #fbfaf6, transparent 70%); }
.waves { position: absolute; left: -2%; bottom: 0; width: 104%; height: 30vh; }
.waves path { fill: none; stroke: #1f3f8f; stroke-width: 1.3; }
.waves { animation: sway 14s ease-in-out infinite alternate; }
@keyframes sway { to { transform: translateX(-2%); } }

.bg-3 { background: radial-gradient(ellipse 70% 70% at 50% 45%, #f7eee0, #efe3d0 55%, #e3d0b4); }
.lattice { position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(176,138,62,.25) 1px, transparent 1px), linear-gradient(90deg, rgba(176,138,62,.25) 1px, transparent 1px);
  background-size: 72px 72px; mask-image: radial-gradient(ellipse at center, transparent 30%, #000 80%); }
.lattice::after { content: ''; position: absolute; inset: 28px; border: 1px solid rgba(176,138,62,.5); outline: 1px solid rgba(176,138,62,.3); outline-offset: 8px; }

.bg-4 { background: radial-gradient(ellipse 90% 70% at 50% 100%, #3a0f06, #150a07 55%, #0b0807); }
.war-glow { position: absolute; left: 0; right: 0; bottom: -10vh; height: 50vh; background: radial-gradient(ellipse 60% 100% at 50% 100%, rgba(212,71,45,.45), transparent 70%); animation: flicker 2.2s ease-in-out infinite alternate; }
.smoke { position: absolute; width: 90vw; height: 70vh; border-radius: 50%; filter: blur(80px); background: radial-gradient(closest-side, rgba(90,80,75,.35), transparent); animation: drift 22s ease-in-out infinite alternate; }
.s1 { left: -30vw; top: -10vh; } .s2 { right: -40vw; top: 20vh; animation-duration: 30s; }

.bg-5 { background: #d8c6a3; }
.paper-lines { position: absolute; inset: 0;
  background: repeating-linear-gradient(180deg, transparent 0 31px, rgba(110,70,30,.09) 31px 32px),
    radial-gradient(ellipse at 30% 20%, rgba(255,250,235,.5), transparent 60%), radial-gradient(ellipse at 80% 90%, rgba(120,80,40,.25), transparent 60%); }
.stamp { position: absolute; font-family: var(--f-brush); color: rgba(168,40,30,.28); border: 3px solid rgba(168,40,30,.28); padding: 6px 14px; transform: rotate(-12deg); font-size: 44px; letter-spacing: .1em; }
.st1 { right: 8vw; top: 16vh; } .st2 { left: 44vw; bottom: 16vh; transform: rotate(8deg); font-size: 30px; }

.bg-6 { background: #f4f2ec; }
.lab-grid { position: absolute; inset: 0;
  background-image: linear-gradient(rgba(169,129,47,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(169,129,47,.14) 1px, transparent 1px),
    linear-gradient(rgba(169,129,47,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(169,129,47,.07) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px; background-position: center; }
.lab-grid::after { content: ''; position: absolute; left: 50%; top: 10%; bottom: 10%; border-left: 1px dashed rgba(169,129,47,.45); }

.bg-7 { background: linear-gradient(160deg, #f3eee6 0%, #ebe5da 50%, #ddd3c3 100%); }
.window-light { position: absolute; inset: -20%;
  background: repeating-linear-gradient(115deg, transparent 0 9vw, rgba(255,250,240,.55) 9vw 15vw, transparent 15vw 22vw);
  filter: blur(26px); opacity: .8; animation: drift 30s ease-in-out infinite alternate; }

/* ==========================================================
   VASE PARTS
   ========================================================== */
.vase .ring { fill: none; stroke: #3d2215; }
.vase .slip { fill: #e4b98f; opacity: .35; }
.vase .crackle { fill: none; stroke: #3c5a4c; stroke-width: .7; opacity: .45; }
.vase .crackle.gold { stroke: #8a6a2c; stroke-width: 1.1; opacity: .5; }
.vase .cobalt .c-line { fill: none; stroke: #1c3a86; stroke-width: 2; }
.vase .cobalt .c-line.thin { stroke-width: 1.2; }
.vase .cobalt .c-line.bold { stroke-width: 3.2; }
.vase .cobalt .c-line.light { stroke: #f4f3ee; stroke-width: 1.1; }
.vase .cobalt .c-fill { fill: #1c3a86; }
.vase .cobalt .c-wash { fill: #3c5eaa; opacity: .78; }
.vase .gilt { fill: #c9a34e; }
.vase .turq { fill: #3f9e97; opacity: .8; }
.vase .fret { fill: none; stroke: #c9576f; stroke-width: 1.4; }
.vase .branch { fill: none; stroke: #6e4f33; stroke-width: 2.4; stroke-linecap: round; }
.vase .branch.thin { stroke-width: 1.4; }
.vase .leaf { fill: #5f8a55; opacity: .9; }
.vase .rose1 { fill: #e493a3; }
.vase .rose2 { fill: #d4677e; }
.vase .rose3 { fill: #a63d57; }
.vase .blue { fill: #6d88c4; }
.vase .rib { stroke: #000; stroke-opacity: .045; stroke-width: 1; }
.vase .band { fill: #7fa596; }
.vase .v-outline { fill: none; stroke: rgba(255,255,255,.35); stroke-width: 1; }
.t-dark .vase .v-outline { stroke: rgba(255,210,170,.35); }
.vase .v-sepia { fill: #9b6f3a; mix-blend-mode: multiply; }
.vase .v-cracks polyline, .vase .v-cracks path { fill: none; stroke: #120804; stroke-width: 2.2; stroke-linejoin: round; }
.vase .v-seams polyline { fill: none; stroke: #d9ae4c; stroke-width: 3.2; stroke-linejoin: round; stroke-dasharray: 520; }
.vase .staple rect, .vase .staple circle { fill: #b06a3a; stroke: #5d321a; stroke-width: .8; }
.vase .wood { fill: none; stroke: #6d4a28; stroke-width: 3; stroke-linejoin: round; }
.vase .wood.thin { stroke-width: 1.5; }
.vase .corner { fill: #4a3220; }
.vase .straw { stroke: #b88f4a; stroke-width: 1.4; stroke-linecap: round; opacity: .85; }
.vase .tag rect { fill: #efe2c2; stroke: #8a6a3a; }
.vase .tag .hole { fill: #8a6a3a; }
.vase .tag text { font-family: var(--f-cn); font-size: 11px; font-weight: 600; fill: #7d2a1e; text-anchor: middle; letter-spacing: 1px; }
.vase .cup, .vase .bowl { fill: #eeeae3; }
.vase .cup-rim { fill: #d9d3c8; stroke: #fff; stroke-width: .8; }
.vase .band2 { fill: #7fa596; }

/* ==========================================================
   SCENES
   ========================================================== */
.scene {
  position: absolute; inset: 0;
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 24px; align-items: center;
  padding: var(--hdr-h) var(--pad-x) var(--tl-h);
  visibility: hidden; pointer-events: none;
  overflow-y: auto; overflow-x: hidden; scrollbar-width: none;
}
.scene::-webkit-scrollbar { display: none; }
.scene.is-active { visibility: visible; pointer-events: auto; }
.col-l { grid-column: 1 / 5; max-width: 480px; }
.col-r { grid-column: 9 / 13; justify-self: end; width: 100%; max-width: 380px; display: grid; gap: 18px; }

.kicker { display: flex; align-items: center; gap: 12px; font-family: var(--f-mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); margin-bottom: 22px; white-space: nowrap; }
.k-num { color: var(--accent); font-size: 12px; }
.k-line { display: block; width: 44px; height: 1px; background: var(--accent); transform-origin: left; }

.title { font-weight: 900; font-size: clamp(38px, 4.3vw, 78px); line-height: 1.12; letter-spacing: .02em; margin-bottom: 18px; }
.ln { display: block; overflow: hidden; padding-bottom: .06em; }
.ln > span { display: inline-block; will-change: transform; }
.sub { font-family: var(--f-en); font-style: italic; font-weight: 300; font-size: clamp(18px, 1.5vw, 24px); color: var(--muted); margin-bottom: 22px; }
.sub .cn { display: inline-block; font-family: var(--f-cn); font-style: normal; font-weight: 600; font-size: .62em; letter-spacing: .28em; color: var(--accent); margin-right: 14px; vertical-align: .2em; }
.body { font-size: 15px; line-height: 2; color: var(--ink); opacity: .86; font-weight: 400; text-align: justify; }
.body em { font-family: var(--f-en); font-style: italic; font-size: 1.2em; color: var(--accent); }

.steps { display: grid; grid-template-columns: repeat(6, 1fr); margin-top: 26px; border-top: 1px solid var(--line); }
.steps li { padding: 12px 0 0; font-size: 13px; letter-spacing: .12em; display: grid; gap: 6px; border-right: 1px solid var(--line); padding-left: 10px; }
.steps li:last-child { border-right: 0; }
.steps li i { font-style: normal; font-family: var(--f-brush); color: var(--accent); font-size: 18px; }
.steps--gold li i { font-family: var(--f-mono); font-size: 11px; letter-spacing: .1em; }

.quote { margin-top: 26px; padding: 18px 0 0 24px; border-top: 1px solid var(--line); position: relative; font-size: 17px; letter-spacing: .08em; line-height: 1.8; }
.quote > span { position: absolute; left: -2px; top: 6px; font-family: var(--f-en); font-size: 48px; color: var(--accent); line-height: 1; }
.quote small { display: block; font-size: 12px; color: var(--muted); letter-spacing: .04em; margin-top: 6px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.tags li { font-size: 12px; letter-spacing: .15em; padding: 7px 14px; border: 1px solid var(--accent); color: var(--accent); border-radius: 100px; }

/* right column */
.stat { display: grid; grid-template-columns: auto auto 1fr; align-items: end; column-gap: 6px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.stat b { font-family: var(--f-en); font-weight: 300; font-size: clamp(52px, 5vw, 84px); line-height: .85; letter-spacing: -.02em; color: var(--ink); }
.stat sup { font-size: 14px; color: var(--accent); align-self: start; margin-top: 6px; }
.stat p { font-size: 13px; line-height: 1.5; padding-left: 14px; letter-spacing: .06em; }
.stat p em { display: block; font-family: var(--f-en); font-style: italic; font-size: 14px; color: var(--muted); letter-spacing: 0; }

.card { background: var(--card); border: 1px solid var(--line); padding: 16px 18px 18px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.card figcaption { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; letter-spacing: .14em; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.card figcaption em { font-family: var(--f-mono); font-size: 10px; letter-spacing: .12em; color: var(--muted); text-transform: uppercase; }
.card--dark { background: rgba(0,0,0,.25); }

.note { font-size: 12.5px; line-height: 1.8; color: var(--muted); padding-left: 14px; border-left: 2px solid var(--accent); }
.note em { font-family: var(--f-en); font-style: italic; font-size: 1.15em; color: var(--ink); }

.chart { width: 100%; height: 100px; overflow: visible; }
.chart-grid line { stroke: var(--line); stroke-dasharray: 2 4; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 600; filter: drop-shadow(0 0 6px var(--accent)); }
.chart-dot { fill: var(--accent); }
.chart-axis { display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: 10px; color: var(--muted); margin-top: 8px; }

.kilns li { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 12.5px; }
.kilns li:last-child { border-bottom: 0; }
.kilns b { font-family: var(--f-brush); font-size: 24px; font-weight: 400; color: var(--accent); line-height: 1; }
.kilns em { font-size: 11.5px; color: var(--muted); }

.route { width: 100%; height: auto; overflow: visible; }
.route-coast { fill: none; stroke: var(--line); stroke-width: 6; stroke-linecap: round; }
.route-line { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 600; }
.route-pts circle { fill: var(--accent); }
.route-pts text { font-size: 10px; fill: var(--ink); font-family: var(--f-cn); }
.route-pts.small text { font-size: 9px; fill: var(--muted); }

.plates { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); counter-reset: p; }
.plates li { background: #f4eadb; padding: 7px 6px 6px; font-size: 11px; letter-spacing: .04em; counter-increment: p; position: relative; transition: background .3s, color .3s; }
.plates li::before { content: counter(p, decimal-leading-zero); display: block; font-family: var(--f-mono); font-size: 9px; color: var(--accent); margin-bottom: 3px; }
.plates li:hover { background: var(--accent); color: #fff; }
.plates li:hover::before { color: #fff; }

.chron li { display: grid; grid-template-columns: 56px 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 12.5px; line-height: 1.6; }
.chron li:last-child { border-bottom: 0; }
.chron b { font-family: var(--f-en); font-size: 22px; font-weight: 400; color: var(--accent); line-height: 1.1; }

.record > div { display: grid; grid-template-columns: 48px 1fr; padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 12.5px; }
.record > div:last-child { border-bottom: 0; }
.record dt { color: var(--muted); letter-spacing: .15em; }
.record dd b { font-family: var(--f-en); font-size: 20px; font-weight: 400; color: var(--accent); }
.card--record { background-image: linear-gradient(135deg, rgba(169,129,47,.07), transparent 60%); }

/* chapter 08 */
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn { position: relative; display: inline-flex; align-items: center; gap: 14px; padding: 16px 22px; font-size: 14px; letter-spacing: .18em; overflow: hidden; isolation: isolate; }
.btn em { font-family: var(--f-en); font-style: italic; letter-spacing: .02em; font-size: 15px; opacity: .7; }
.btn i { font-style: normal; transition: transform .5s var(--ease); }
.btn--solid { background: var(--ink); color: #f3eee6; }
.btn--solid::before { content: ''; position: absolute; inset: 0; background: var(--accent); transform: scaleY(0); transform-origin: bottom; transition: transform .6s var(--ease); z-index: -1; }
.btn--solid:hover::before { transform: scaleY(1); }
.btn:hover i { transform: translateX(5px); }
.btn--ghost { border: 1px solid var(--ink); }
.btn--ghost:hover i { transform: translate(3px, -3px); }

.cats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cats a { position: relative; display: grid; gap: 2px; padding: 18px 16px 16px; min-height: 124px; background: var(--card); border: 1px solid var(--line); overflow: hidden; transition: border-color .5s, transform .6s var(--ease); }
.cats a::after { content: ''; position: absolute; right: -30px; bottom: -40px; width: 110px; height: 110px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff, #d9d2c6 60%, #b9b0a1); opacity: .55; transition: transform .8s var(--ease); }
.cats a:hover { border-color: var(--accent); transform: translateY(-3px); }
.cats a:hover::after { transform: scale(1.25) translate(-10px, -10px); }
.cat-n { font-family: var(--f-mono); font-size: 10px; color: var(--accent); }
.cats b { font-size: 22px; font-weight: 600; letter-spacing: .1em; margin-top: 12px; }
.cats em { font-family: var(--f-en); font-style: italic; font-size: 14px; color: var(--muted); }
.cats i { font-style: normal; font-family: var(--f-mono); font-size: 10px; color: var(--muted); margin-top: 8px; position: relative; z-index: 1; }

.letter label { display: block; font-size: 12.5px; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.letter div { display: flex; border-bottom: 1px solid var(--ink); }
.letter input { flex: 1; background: none; border: 0; outline: 0; padding: 12px 0; font-family: var(--f-en); font-size: 18px; color: var(--ink); }
.letter input::placeholder { color: var(--muted); font-style: italic; }
.letter button { background: none; border: 0; font-family: var(--f-cn); font-size: 14px; letter-spacing: .2em; color: var(--accent); padding: 0 4px; }
.letter__ok { display: none; font-size: 12.5px; color: var(--accent); margin-top: 10px; }
.letter.is-sent .letter__ok { display: block; }

/* ==========================================================
   CHROME: header, rail, timeline, cursor
   ========================================================== */
.hdr { position: absolute; z-index: 20; top: 0; left: 0; right: 0; height: var(--hdr-h); padding: 0 var(--pad-x); display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; }
.seal { display: grid; place-items: center; width: 34px; height: 34px; background: #b8322a; color: #f6e9d8; font-family: var(--f-brush); font-size: 22px; border-radius: 3px; box-shadow: inset 0 0 0 2px rgba(246,233,216,.35); }
.brand__txt { font-size: 18px; font-weight: 600; letter-spacing: .4em; display: flex; flex-direction: column; line-height: 1.1; }
.brand__txt em { font-family: var(--f-mono); font-size: 9px; letter-spacing: .5em; color: var(--muted); font-weight: 400; }
.hdr__mid { font-size: 12px; letter-spacing: .3em; color: var(--muted); }
.hdr__mid span { font-family: var(--f-en); font-style: italic; letter-spacing: .05em; font-size: 14px; }
.hdr__nav { display: flex; gap: 30px; font-size: 13px; letter-spacing: .2em; }
.hdr__nav a { position: relative; padding: 6px 0; }
.hdr__nav a::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .5s var(--ease); }
.hdr__nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.rail { position: absolute; z-index: 20; left: calc(var(--pad-x) * .45); top: 50%; transform: translateY(-50%); display: none; }

.tl { position: absolute; z-index: 20; left: 0; right: 0; bottom: 0; height: var(--tl-h); padding: 0 var(--pad-x) 26px; display: grid; grid-template-columns: 250px 1fr 180px; align-items: end; gap: 40px; }
.tl__year { display: grid; }
.tl__year span { font-family: var(--f-en); font-size: 56px; font-weight: 300; line-height: .9; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.tl__year em { font-family: var(--f-mono); font-size: 10px; letter-spacing: .2em; color: var(--muted); margin-top: 8px; white-space: nowrap; }
.tl__trackwrap { position: relative; padding-bottom: 8px; }
.tl__bar { position: absolute; left: 0; right: 0; top: 5px; height: 1px; background: var(--line); }
.tl__fill { position: absolute; inset: 0; background: var(--accent); transform-origin: left; transform: scaleX(0); }
.tl__track { position: relative; display: flex; justify-content: space-between; }
.tl__track li { position: relative; display: grid; justify-items: center; gap: 10px; cursor: pointer; padding: 0 4px; }
.tl__track li:first-child { justify-items: start; } .tl__track li:last-child { justify-items: end; }
.tl__track li i { width: 11px; height: 11px; border-radius: 50%; background: var(--bgc, #fff); border: 1px solid var(--muted); transition: all .6s var(--ease); background: transparent; backdrop-filter: blur(4px); }
.tl__track li span { font-size: 13px; letter-spacing: .1em; color: var(--muted); transition: color .4s; }
.tl__track li.is-past i { background: var(--accent); border-color: var(--accent); transform: scale(.6); }
.tl__track li.is-on i { background: var(--accent); border-color: var(--accent); transform: scale(1.3); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 22%, transparent); }
.tl__track li.is-on span, .tl__track li:hover span { color: var(--ink); }
.tl__hint { display: flex; align-items: center; justify-content: flex-end; gap: 12px; font-size: 12px; letter-spacing: .16em; color: var(--muted); white-space: nowrap; }
.mouse { width: 18px; height: 28px; border: 1px solid var(--muted); border-radius: 10px; position: relative; flex: none; }
.mouse i { position: absolute; left: 50%; top: 5px; width: 2px; height: 6px; margin-left: -1px; background: var(--accent); border-radius: 2px; animation: wheel 1.8s var(--ease) infinite; }
@keyframes wheel { 0%{opacity:0; transform:translateY(0)} 30%{opacity:1} 100%{opacity:0; transform:translateY(10px)} }

.cursor { position: fixed; inset: 0; z-index: 90; pointer-events: none; }
.cursor__dot, .cursor__ring { position: absolute; left: 0; top: 0; }
.cursor__dot { width: 6px; height: 6px; margin: -3px 0 0 -3px; border-radius: 50%; background: var(--accent); }
.cursor__ring { width: 38px; height: 38px; margin: -19px 0 0 -19px; }
.cursor__ring::before { content: ''; position: absolute; inset: 0; border: 1px solid var(--ink); border-radius: 50%; opacity: .45; transition: transform .5s var(--ease), background .4s, opacity .4s; }
.cursor__ring span { position: absolute; inset: 0; display: grid; place-items: center; font-size: 11px; letter-spacing: .1em; color: #fff; opacity: 0; transition: opacity .3s; white-space: nowrap; }
.cursor.is-hover .cursor__ring::before { transform: scale(2); background: var(--accent); border-color: transparent; opacity: .92; }
.cursor.is-hover .cursor__ring span { opacity: 1; }
.cursor.is-hover .cursor__dot { opacity: 0; }
.cursor.is-out { opacity: 0; }
.is-touch .cursor { display: none; }

/* ==========================================================
   TRANSITION FX
   ========================================================== */
.fx > * { position: absolute; }
.fx-fire { width: 280vmax; height: 280vmax; border-radius: 50%;
  background: radial-gradient(closest-side, #fff4dc 0%, #ffd08a 12%, #ff8a3d 26%, #c8431b 40%, rgba(90,20,5,.9) 52%, rgba(30,8,2,0) 70%); }
.fx-fire__core { position: absolute; inset: 0; border-radius: 50%; opacity: 0; background: radial-gradient(closest-side, #fbfaf3 0%, #e4ece6 40%, #c3d4c9 60%, rgba(195,212,201,0) 72%); }
.fx-ink, .fx-shatter, .fx-burn { inset: 0; width: 100%; height: 100%; }
.fx-screens { inset: 0; display: flex; }
.fx-screen { flex: 1; height: 100%; position: relative; border-right: 1px solid rgba(201,163,78,.6); display: grid; place-items: center;
  box-shadow: inset 0 0 0 10px rgba(201,163,78,.0), inset -30px 0 60px rgba(0,0,0,.06); }
.fx-screen:nth-child(odd) { background-image: linear-gradient(90deg, rgba(0,0,0,.04), transparent 40%) !important; }
.fx-screen::before { content: ''; position: absolute; inset: 14px; border: 1px solid rgba(201,163,78,.45); }
.fx-screen span { font-family: var(--f-brush); font-size: 5vw; color: rgba(176,72,93,.8); }
.fx-shatter .cracks path { fill: none; stroke: #f7e9d2; stroke-width: 1.4; filter: drop-shadow(0 0 4px rgba(255,160,80,.9)); }
.fx-shatter polygon { stroke: rgba(212,71,45,.35); stroke-width: .6; }
.fx-shatter .flash { fill: #fff3e3; opacity: 0; }
.fx-burn .edge { fill: none; stroke: #ffb35c; stroke-width: 3; filter: drop-shadow(0 0 6px #ff7a2a) drop-shadow(0 0 16px #d4472d); }
.fx-burn .char { fill: none; stroke: #1a0b05; stroke-width: 26; opacity: .75; filter: blur(8px); }
.fx-seam { inset: 0; }
.fx-seam__half { position: absolute; left: 0; right: 0; height: 50.2%; }
.fx-seam__half.top { top: 0; } .fx-seam__half.bot { bottom: 0; }
.fx-seam__line { position: absolute; left: 0; right: 0; top: 50%; height: 3px; margin-top: -1.5px; background: linear-gradient(90deg, transparent, #d9ae4c 10%, #f5dc92 50%, #d9ae4c 90%, transparent); box-shadow: 0 0 18px rgba(217,174,76,.9); }
.fx-staple { position: absolute; top: 50%; width: 6px; height: 34px; margin: -17px 0 0 -3px; border-radius: 3px; background: linear-gradient(90deg, #a47a2a, #f3d68a, #a47a2a); box-shadow: 0 0 10px rgba(217,174,76,.8); }
.fx-iris { inset: 0; }
.fx-ring { width: 80px; height: 80px; border-radius: 50%; border: 1px solid #a9812f; }
.fx-pour { inset: -6vh 0; display: grid; place-items: center; align-content: center; border-radius: 0 0 50% 50% / 0 0 8vh 8vh; }
.fx-pour span { font-family: var(--f-brush); font-size: 40vh; line-height: 1; }
.fx-pour em { font-family: var(--f-mono); font-size: 12px; letter-spacing: .4em; margin-top: 10px; }

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (min-width: 1500px) {
  .rail { display: grid; gap: 18px; justify-items: center; font-family: var(--f-mono); font-size: 10px; color: var(--muted); }
  .rail__num b { color: var(--accent); font-weight: 400; }
  .rail__era { writing-mode: vertical-rl; font-family: var(--f-cn); font-size: 12px; letter-spacing: .5em; color: var(--ink); }
  .col-l { grid-column: 2 / 5; }
}
@media (max-width: 1180px) {
  .hdr__mid { display: none; }
  .col-l { grid-column: 1 / 6; }
  .col-r { grid-column: 9 / 13; max-width: 320px; }
  .vase-wrap { width: min(52vh, 34vw); height: min(56vh, 36vw * 1.033); }
  .tl { grid-template-columns: 200px 1fr 150px; gap: 24px; }
}
@media (max-width: 900px), (max-height: 620px) and (max-width: 1100px) {
  :root { --hdr-h: 68px; --tl-h: 84px; }
  .hdr__nav a:not(.bag) { display: none; }
  .vase-wrap { position: fixed; top: var(--hdr-h); bottom: auto; margin: 0 auto; width: 40vh; max-width: 70vw; height: 36vh; }
  .glyph { font-size: 50vh; top: 6vh; margin-top: 0; right: -4vw; }
  .scene { display: block; padding-top: calc(var(--hdr-h) + 36vh + 16px); padding-bottom: calc(var(--tl-h) + 24px); }
  .scene {
    -webkit-mask-image: linear-gradient(180deg, transparent calc(var(--hdr-h) + 4vh), #000 calc(var(--hdr-h) + 22vh), #000 calc(100% - var(--tl-h) - 10px), transparent calc(100% - var(--tl-h) + 20px));
            mask-image: linear-gradient(180deg, transparent calc(var(--hdr-h) + 4vh), #000 calc(var(--hdr-h) + 22vh), #000 calc(100% - var(--tl-h) - 10px), transparent calc(100% - var(--tl-h) + 20px));
  }
  .col-l, .col-r { max-width: 620px; margin: 0 auto; }
  .col-r { margin-top: 28px; justify-self: auto; }
  .title { font-size: clamp(34px, 9vw, 56px); }
  .tl { grid-template-columns: 1fr; padding-bottom: 14px; gap: 10px; }
  .tl__year, .tl__hint { display: none; }
  .tl__track li span { font-size: 11px; }
  .cats a { min-height: 104px; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps li:nth-child(3) { border-right: 0; }
  .btn { width: 100%; justify-content: space-between; }
  .plates { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .grain, .mist, .kiln-glow, .war-glow, .smoke, .waves, .window-light, .mouse i { animation: none !important; }
}


/* ==========================================================
   LANGUAGE SWITCH
   ========================================================== */
.lang { display: flex; align-items: center; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 100px; margin-left: 6px; }
.lang button { background: none; border: 0; color: var(--muted); font-family: var(--f-mono); font-size: 10px; letter-spacing: .12em; width: 30px; height: 24px; border-radius: 100px; transition: background .4s, color .4s; }
.lang button[data-lang="zh"] { font-family: var(--f-cn); font-size: 12px; letter-spacing: 0; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper, #f3eee6); }
.t-dark .lang button[aria-pressed="true"] { color: #140d08; }
.hdr__nav { align-items: center; }
.bag__n { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--accent); color: #fff; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0; margin-left: 4px; }

/* ==========================================================
   ENGLISH TYPOGRAPHY (primary language)
   ========================================================== */
html[lang="en"] .brand__txt { font-family: var(--f-en); font-weight: 500; font-size: 20px; letter-spacing: .32em; }
html[lang="en"] .brand__txt em { font-family: var(--f-cn); letter-spacing: .6em; font-size: 10px; }
html[lang="en"] .hdr__mid { font-family: var(--f-en); font-style: italic; font-size: 15px; letter-spacing: .04em; }
html[lang="en"] .hdr__mid span { font-family: var(--f-cn); font-style: normal; font-size: 11px; letter-spacing: .3em; }
html[lang="en"] .hdr__nav > a { font-family: var(--f-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; }

html[lang="en"] .col-l { max-width: 540px; }
html[lang="en"] .title { font-family: var(--f-en); font-weight: 400; font-size: clamp(38px, 3.9vw, 68px); line-height: 1.02; letter-spacing: -.01em; }
html[lang="en"] .title .ln:nth-child(2) > span { font-style: italic; font-weight: 300; }
html[lang="en"] .ln { padding-bottom: .1em; }
html[lang="en"] .sub { font-size: clamp(17px, 1.35vw, 21px); }
html[lang="en"] .body { font-family: var(--f-en); font-size: clamp(16.5px, 1.18vw, 18.5px); line-height: 1.6; text-align: left; opacity: .92; hyphens: auto; }
html[lang="en"] .body em { font-size: 1.05em; }
html[lang="en"] .kicker { font-size: 10.5px; }
html[lang="en"] .steps li { font-family: var(--f-en); font-size: 15px; letter-spacing: .02em; }
html[lang="en"] .quote p { font-family: var(--f-en); font-style: italic; font-size: 19px; line-height: 1.45; letter-spacing: 0; }
html[lang="en"] .quote small { font-family: var(--f-mono); font-style: normal; font-size: 10px; letter-spacing: .08em; line-height: 1.6; margin-top: 10px; }
html[lang="en"] .tags li { font-family: var(--f-en); font-size: 14px; letter-spacing: .04em; font-style: italic; }

html[lang="en"] .stat sup { font-family: var(--f-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; margin-top: 8px; }
html[lang="en"] .stat p { font-family: var(--f-en); font-size: 16px; letter-spacing: .01em; line-height: 1.3; }
html[lang="en"] .stat p em { font-family: var(--f-cn); font-style: normal; font-size: 11.5px; letter-spacing: .12em; margin-top: 4px; }
html[lang="en"] .card figcaption { font-family: var(--f-en); font-size: 17px; letter-spacing: .01em; }
html[lang="en"] .card figcaption em { font-family: var(--f-cn); letter-spacing: .1em; text-transform: none; font-size: 10.5px; }
html[lang="en"] .chart-axis { text-transform: uppercase; font-size: 9px; }
html[lang="en"] .note { font-family: var(--f-en); font-size: 15px; line-height: 1.5; }
html[lang="en"] .kilns li { grid-template-columns: 34px 1fr auto; font-family: var(--f-en); font-size: 14.5px; gap: 6px; }
html[lang="en"] .kilns em { font-family: var(--f-en); font-style: italic; font-size: 13.5px; text-align: right; }
html[lang="en"] .route-pts text { font-family: var(--f-en); font-size: 11px; font-style: italic; }
html[lang="en"] .plates li { font-family: var(--f-en); font-size: 12.5px; line-height: 1.15; letter-spacing: 0; padding: 6px 6px 7px; }
html[lang="en"] .chron li { grid-template-columns: 56px 1fr; font-family: var(--f-en); font-size: 15px; line-height: 1.35; }
html[lang="en"] .record > div { grid-template-columns: 84px 1fr; font-family: var(--f-en); font-size: 15px; align-items: baseline; }
html[lang="en"] .record dt { font-family: var(--f-mono); font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase; }

html[lang="en"] .btn span { font-family: var(--f-en); font-size: 17px; letter-spacing: .02em; font-weight: 500; }
html[lang="en"] .btn em { font-family: var(--f-cn); font-style: normal; font-size: 11px; letter-spacing: .2em; }
html[lang="en"] .cats b { font-family: var(--f-en); font-weight: 500; font-size: 23px; letter-spacing: .01em; line-height: 1.1; }
html[lang="en"] .cats em { font-family: var(--f-cn); font-style: normal; font-size: 12px; letter-spacing: .3em; margin-top: 2px; }
html[lang="en"] .cats i { text-transform: uppercase; letter-spacing: .12em; }
html[lang="en"] .letter label { font-family: var(--f-en); font-style: italic; font-size: 15px; letter-spacing: 0; }
html[lang="en"] .letter button { font-family: var(--f-mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; }
html[lang="en"] .letter__ok { font-family: var(--f-en); font-size: 15px; font-style: italic; }

html[lang="en"] .tl__year em, html[lang="en"] .tl__hint { font-family: var(--f-mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
html[lang="en"] .tl__track li span { font-family: var(--f-mono); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
html[lang="en"] .rail__era { font-family: var(--f-en); font-style: italic; font-size: 14px; letter-spacing: .1em; }
html[lang="en"] .fx-pour em { text-transform: uppercase; }
html[lang="en"] .tl { grid-template-columns: 250px 1fr 200px; }
html[lang="en"] #hint { white-space: nowrap; }

@media (max-width: 900px), (max-height: 620px) and (max-width: 1100px) {
  html[lang="en"] .title { font-size: clamp(34px, 9.5vw, 56px); }
  .hdr__nav { gap: 14px; }
}

/* short laptop screens: keep every English chapter on one screen */
@media (min-width: 901px) and (max-height: 820px) {
  html[lang="en"] .title { font-size: clamp(36px, 3.5vw, 58px); margin-bottom: 12px; }
  html[lang="en"] .sub { margin-bottom: 14px; }
  html[lang="en"] .body { font-size: 16px; line-height: 1.5; }
  html[lang="en"] .quote { margin-top: 16px; padding-top: 12px; }
  html[lang="en"] .quote p { font-size: 17px; }
  html[lang="en"] .steps { margin-top: 16px; }
  .kicker { margin-bottom: 14px; }
}

/* ---------- chapter 06 · three routes west ---------- */
.card--exodus { --r1: #8a4b22; --r2: #c07a3a; --r3: #5a3a24; }
.route--exodus { margin: 2px 0 4px; }
.route--exodus .route-line { stroke-width: 2.2; stroke-linecap: round; fill: none; }
.route--exodus .exo-trunk { stroke: var(--ink); opacity: .55; stroke-dasharray: 600; }
.route--exodus .exo-r1 { stroke: var(--r1); }
.route--exodus .exo-r2 { stroke: var(--r2); }
.route--exodus .exo-r3 { stroke: var(--r3); }
.exo-city circle { fill: var(--card-solid, #efe3c8); stroke: var(--ink); stroke-width: 1.4; }
.exo-city text { font-family: var(--f-en); font-style: italic; font-size: 13px; fill: var(--ink); }
.exo-end circle { stroke: none; }
.exo-end .e1 circle { fill: var(--r1); } .exo-end .e2 circle { fill: var(--r2); } .exo-end .e3 circle { fill: var(--r3); }
.exo-end text { font-family: var(--f-mono); font-size: 9.5px; fill: #fff; text-anchor: middle; }
.exo-west { fill: none; stroke: var(--muted); stroke-width: 1; }
.exo-dir { font-family: var(--f-mono); font-size: 8px; letter-spacing: .2em; fill: var(--muted); text-transform: uppercase; }
.exo-legend { display: grid; gap: 0; margin-top: 8px; border-top: 1px solid var(--line); }
.exo-legend li { display: grid; grid-template-columns: 22px 1fr; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); }
.exo-legend li:last-child { border-bottom: 0; padding-bottom: 0; }
.exo-legend i { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; color: #fff; font-style: normal; font-family: var(--f-mono); font-size: 11px; }
.exo-legend .e1 i { background: var(--r1); } .exo-legend .e2 i { background: var(--r2); } .exo-legend .e3 i { background: var(--r3); }
.exo-legend div { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px 10px; }
.exo-legend b { font-weight: 600; font-size: 14px; letter-spacing: .12em; }
.exo-legend span { font-size: 13px; color: var(--muted); letter-spacing: .04em; }
html[lang="en"] .exo-legend b { font-family: var(--f-en); font-weight: 500; font-size: 17px; letter-spacing: .01em; }
html[lang="en"] .exo-legend span { font-family: var(--f-en); font-style: italic; font-size: 15.5px; letter-spacing: 0; }
html[lang="zh-CN"] .exo-city text { font-family: var(--f-cn); font-style: normal; font-size: 12px; }
html[lang="zh-CN"] .exo-dir { font-family: var(--f-cn); font-size: 9px; letter-spacing: .3em; }