/* 01–08 演示页共用的展馆外壳：与首页同一套视觉 */

:root {
    --ink: #080b0f;
    --panel: #0c1117;
    --panel-2: #10161d;
    --line: rgba(233, 238, 243, .13);
    --line-strong: rgba(233, 238, 243, .26);
    --text: #e9eef3;
    --muted: #8a96a3;
    --dim: #5d6874;
    --coral: #ff6a45;
    --cyan: #7cc9ff;
    --serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
    --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --mono: "SF Mono", Menlo, Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(900px 520px at 82% -8%, rgba(255, 106, 69, .14), transparent 62%),
        radial-gradient(760px 540px at -6% 42%, rgba(124, 201, 255, .10), transparent 64%),
        linear-gradient(180deg, #080b0f 0%, #090d12 55%, #070a0e 100%);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: .45;
    background-image: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(233, 238, 243, .032) 1px, transparent 1px),
        linear-gradient(90deg, rgba(233, 238, 243, .032) 1px, transparent 1px);
    background-size: 84px 84px;
    mask-image: radial-gradient(ellipse 78% 60% at 50% 22%, #000 22%, transparent 78%);
}

::selection { background: rgba(255, 106, 69, .32); color: #fff; }

a { color: inherit; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

button { font: inherit; }

/* ---------- 页面骨架 ---------- */

.page {
    position: relative;
    z-index: 1;
    max-width: 1360px;
    margin: 0 auto;
    padding: 22px clamp(18px, 4vw, 48px) 40px;
}

@media (min-width: 1200px) {
    /* --side 由各页面按角色宽度预留右侧空间，只在大屏生效 */
    .page { padding-right: calc(clamp(18px, 4vw, 48px) + var(--side, 0px)); }
}

.masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.mast-left, .mast-right { display: flex; align-items: center; gap: 12px; }

.back {
    padding: 6px 10px;
    border: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .1em;
    color: var(--muted);
    text-decoration: none;
    transition: color .2s, border-color .2s;
}

.back:hover { color: var(--text); border-color: var(--line-strong); }

.mark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .2em;
    color: var(--coral);
}

.mark::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--coral);
    box-shadow: 0 0 12px var(--coral);
}

.mode {
    padding: 5px 9px;
    border: 1px solid rgba(124, 201, 255, .3);
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .12em;
    color: var(--cyan);
}

.ghost-btn {
    padding: 6px 11px;
    border: 1px solid var(--line-strong);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .12em;
    color: var(--muted);
    text-decoration: none;
    transition: color .2s, border-color .2s, background .2s;
}

.ghost-btn:hover { color: var(--text); border-color: var(--coral); background: rgba(255, 106, 69, .08); }

/* ---------- Hero ---------- */

.hero {
    position: relative;
    padding: 52px 0 34px;
    border-bottom: 1px solid var(--line);
    animation: riseIn .6s ease both;
}

.ghost {
    position: absolute;
    top: 26px;
    right: 4px;
    font-family: var(--serif);
    font-size: clamp(110px, 13vw, 180px);
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 106, 69, .15);
    pointer-events: none;
    user-select: none;
}

.kicker {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .18em;
    color: var(--muted);
    text-transform: uppercase;
}

.kicker::before {
    content: "";
    width: 42px;
    height: 1px;
    background: var(--coral);
}

h1 {
    position: relative;
    margin: 20px 0 0;
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(40px, 5vw, 68px);
    line-height: 1.06;
    letter-spacing: .02em;
}

h1 em {
    font-style: normal;
    color: transparent;
    -webkit-text-stroke: 1px rgba(233, 238, 243, .5);
}

.sub {
    position: relative;
    margin: 12px 0 0;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: .12em;
    color: var(--dim);
}

.pos {
    position: relative;
    max-width: 30ch;
    margin: 18px 0 0;
    font-family: var(--serif);
    font-size: clamp(19px, 2.1vw, 25px);
    line-height: 1.6;
}

.tags {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 20px;
}

.tags span {
    padding: 4px 9px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .08em;
    color: var(--muted);
}

/* ---------- 状态行 ---------- */

.status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .12em;
    color: var(--muted);
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--dim);
    transition: background .2s, box-shadow .2s;
}

.status.live { color: var(--cyan); }
.status.live .dot { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.status.failed { color: var(--coral); }
.status.failed .dot { background: var(--coral); box-shadow: 0 0 10px var(--coral); }

.fallback {
    margin: 0;
    padding: 18px 0 0;
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.9;
}

.fallback a {
    color: var(--cyan);
    text-decoration: none;
    border-bottom: 1px solid rgba(124, 201, 255, .4);
}

/* ---------- 运行条件 ---------- */

.meta { padding-top: 34px; }

.meta h2 {
    margin: 0 0 10px;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: .04em;
}

.meta dl {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    margin: 0;
}

.meta dt, .meta dd {
    margin: 0;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
    font-size: 13.5px;
    line-height: 1.7;
}

.meta dt {
    padding-right: 12px;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .12em;
    color: var(--dim);
    text-transform: uppercase;
}

.meta dd { color: var(--muted); overflow-wrap: anywhere; }
.meta dd strong { color: var(--text); font-weight: 500; }

/* ---------- 完整代码 ---------- */

.code-panel { margin-top: 40px; }

.code-panel h2 {
    margin: 0;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: .04em;
}

.code-panel pre {
    margin: 12px 0 0;
    padding: 18px;
    max-height: 460px;
    overflow: auto;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .02);
    font-family: var(--mono);
    font-size: 11.5px;
    line-height: 1.8;
    color: var(--muted);
    tab-size: 4;
}

/* ---------- 演示台（06 / 07 这类全屏画布） ---------- */

.stage {
    margin-top: 34px;
    border: 1px solid var(--line);
    background: var(--panel);
}

.stage-head,
.stage-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 14px;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .12em;
    color: var(--dim);
    text-transform: uppercase;
}

.stage-head { border-bottom: 1px solid var(--line); }
.stage-foot { border-top: 1px solid var(--line); }

.stage-body {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    min-height: 300px;
    overflow: hidden;
    background:
        radial-gradient(720px 420px at 50% 108%, rgba(124, 201, 255, .08), transparent 70%),
        linear-gradient(180deg, #090d12, #06090d);
}

.stage-body canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.stage-tips {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    padding: 6px 12px;
    border: 1px solid var(--line);
    background: rgba(8, 11, 15, .72);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .08em;
    white-space: nowrap;
    pointer-events: none;
    backdrop-filter: blur(6px);
}

.stage-toolbar {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.stage-toolbar button {
    padding: 7px 14px;
    border: 1px solid var(--line-strong);
    background: rgba(8, 11, 15, .72);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .1em;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: color .2s, border-color .2s;
}

.stage-toolbar button:hover { color: var(--text); border-color: var(--coral); }

.err {
    position: absolute;
    inset: 0;
    display: none;
    place-content: center;
    padding: 24px;
    background: rgba(8, 11, 15, .88);
    color: #ffb4b4;
    font-size: 14px;
    line-height: 1.7;
    text-align: center;
    white-space: pre-wrap;
}

/* ---------- 页脚 ---------- */

.foot {
    margin-top: 46px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 9.5px;
    line-height: 2;
    letter-spacing: .05em;
    color: var(--dim);
}

/* ---------- 技术档案（由原 works 详情页并入各示例页） ---------- */

.sect { margin-top: 54px; }

.sect-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.sect-head h2 {
    margin: 0;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 24px;
    letter-spacing: .04em;
}

.sect-en {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .18em;
    color: var(--dim);
    text-transform: uppercase;
}

/* 模型下拉 */

.model-pick {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .1em;
    color: var(--dim);
}

.model-pick select {
    appearance: none;
    -webkit-appearance: none;
    padding: 4px 26px 4px 9px;
    border: 1px solid var(--line-strong);
    background: #0a0f15 url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6' fill='none' stroke='%238a96a3' stroke-width='1.2'/%3E%3C/svg%3E") no-repeat right 8px center;
    color: var(--text);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .04em;
    cursor: pointer;
    max-width: 220px;
}

.model-pick select:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.model-pick.is-fixed select {
    color: var(--dim);
    cursor: not-allowed;
    background-color: rgba(255, 255, 255, .02);
}

.model-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
}

.model-bar .run-badge {
    padding: 3px 9px;
    border: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .1em;
}

.model-bar .run-badge[data-kind="offline"] { color: var(--cyan); border-color: rgba(124, 201, 255, .3); }
.model-bar .run-badge[data-kind="online"] { color: var(--muted); }

.stage-head-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.stage-head-right .model-pick { margin-left: 0; }

/* 实现要点 */

.points {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: pt;
}

.points li {
    counter-increment: pt;
    position: relative;
    padding: 18px 0 18px 46px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.95;
}

.points li::before {
    content: counter(pt, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 20px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .08em;
    color: var(--coral);
}

.points li strong { color: var(--text); font-weight: 500; }

.points code,
.notes code {
    padding: 1px 4px;
    border: 1px solid var(--line);
    border-radius: 2px;
    background: rgba(255, 255, 255, .04);
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--cyan);
    overflow-wrap: anywhere;
}

/* 关键代码 */

.code-block {
    position: relative;
    margin-top: 18px;
    border: 1px solid var(--line);
    border-left: 2px solid var(--coral);
    background: rgba(6, 9, 13, .8);
}

.code-block .lang {
    position: absolute;
    top: 8px;
    right: 11px;
    font-family: var(--mono);
    font-size: 8.5px;
    letter-spacing: .14em;
    color: var(--dim);
}

.code-block pre {
    margin: 0;
    padding: 20px 18px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.8;
    color: #cfd9e3;
}

/* 注意 */

.notes {
    margin: 0;
    padding: 0;
    list-style: none;
}

.notes li {
    position: relative;
    padding: 14px 0 14px 22px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.85;
}

.notes li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 24px;
    width: 8px;
    height: 1px;
    background: var(--dim);
}

/* 不同用法 */

.variants {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
    gap: 12px;
    padding-top: 18px;
}

.variant {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 16px 14px;
    border: 1px solid var(--line);
    background: rgba(233, 238, 243, .02);
    text-decoration: none;
    color: var(--muted);
    transition: border-color .2s, background .2s, transform .2s;
}

.variant:hover {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, .04);
    transform: translateY(-1px);
}

.variant-name {
    font-family: var(--serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: .02em;
}

.variant-sub {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .08em;
    color: var(--cyan);
}

.variant-note {
    margin-top: 2px;
    font-size: 13px;
    line-height: 1.75;
    color: var(--muted);
}

.variant-link {
    margin-top: auto;
    padding-top: 10px;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: .1em;
    color: var(--coral);
}

/* 上一个 / 下一个展位 */

.pager {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 64px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
}

.pager a {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 18px;
    border: 1px solid var(--line);
    text-decoration: none;
    transition: border-color .2s, background .2s, transform .2s;
}

.pager a:hover {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, .03);
    transform: translateY(-2px);
}

.pager a span {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .14em;
    color: var(--dim);
}

.pager a strong {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 18px;
    letter-spacing: .04em;
}

.pager a.next { text-align: right; }
.pager a.next span { color: var(--muted); }

@media (max-width: 640px) {
    .pager { grid-template-columns: 1fr; }
    .pager a.next { text-align: left; }
    .points li { padding-left: 34px; }
    .stage-head-right { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
    .variant, .pager a { transition: none; }
}

@keyframes riseIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: none; }
}

/* ---------- 组件自绘 canvas 的收尾 ---------- */

/* l2d-widget 自带虚线边框，与页面语言不符 */
#live2dcanvas { border: 0 !important; }

/* ---------- 响应式 ---------- */

/* 1200px 以下不再为角色留白：缩小、压到内容层之下，只作背景 */
@media (max-width: 1199px) {
    .waifu { z-index: 0 !important; opacity: .3 !important; transform: scale(.72); transform-origin: 100% 100%; }
    #live2dcanvas { z-index: 0 !important; opacity: .3 !important; transform: scale(.72); transform-origin: 100% 100%; }
}

@media (max-width: 900px) {
    .page { padding-bottom: 96px; }
    .hero { padding: 40px 0 28px; }
    .meta dl { grid-template-columns: 100px minmax(0, 1fr); }

    .waifu { transform: scale(.72); }
    #live2dcanvas { transform: scale(.72); }
}

@media (max-width: 640px) {
    .page { padding-bottom: 150px; }
    .hero { padding: 32px 0 26px; }
    .ghost { font-size: 96px; top: 20px; }
    .status { font-size: 9.5px; letter-spacing: .08em; }
    .meta dl { grid-template-columns: 92px minmax(0, 1fr); }
    .stage-body { min-height: 300px; }

    .waifu { opacity: .28 !important; transform: scale(.5); }
    #live2dcanvas { opacity: .26 !important; transform: scale(.55) translateX(18%); }
}

@media (prefers-reduced-motion: reduce) {
    .hero { animation: none; }
    .back, .ghost-btn, .dot { transition: none; }
}