/* --- 6. 区块标题 --- */
.section {
    max-width: var(--max);
    margin: 0 auto;
    padding: clamp(4rem, 9vw, 6.5rem) clamp(1.2rem, 4vw, 2rem) 0;
}

.sec-head {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2.4rem;
}

.sec-idx {
    font-family: var(--mono);
    font-size: 0.9rem;
    color: var(--yellow);
    border: 1px solid rgba(252, 238, 10, 0.5);
    padding: 0.1rem 0.5rem;
}

.sec-head h2 {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.sec-en {
    display: block;
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    color: var(--cyan);
    text-transform: uppercase;
}

.sec-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--line-hot), transparent);
    align-self: center;
}

.sec-note {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--muted);
}

/* --- 7. 作品卡片 --- */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.4rem;
}

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(14, 14, 21, 0.95), rgba(9, 9, 14, 0.95));
    border: 1px solid var(--line);
    padding: 1.2rem 1.3rem 1.3rem;
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
    overflow: hidden;
}

.card::before,
.card::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid var(--yellow);
    opacity: 0;
    transition: opacity 0.25s;
    pointer-events: none;
}

.card::before {
    top: -1px;
    left: -1px;
    border-right: 0;
    border-bottom: 0;
}

.card::after {
    bottom: -1px;
    right: -1px;
    border-left: 0;
    border-top: 0;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(252, 238, 10, 0.55);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.6), 0 0 26px rgba(252, 238, 10, 0.09);
}

.card:hover::before,
.card:hover::after {
    opacity: 1;
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    padding-bottom: 0.9rem;
    margin-bottom: 1.1rem;
    border-bottom: 1px dashed var(--line-hot);
}

.card-id {
    color: var(--muted);
}

.card-status {
    color: #3dff9a;
    text-shadow: 0 0 10px rgba(61, 255, 154, 0.5);
}

.card-body {
    flex: 1;
}

.card-glyph {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    margin-bottom: 1rem;
    color: var(--yellow);
    background: rgba(252, 238, 10, 0.07);
    border: 1px solid rgba(252, 238, 10, 0.35);
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    transition: color 0.25s, background 0.25s;
}

.card:hover .card-glyph {
    color: var(--cyan);
    background: rgba(0, 240, 255, 0.1);
}

.card-glyph svg {
    width: 26px;
    height: 26px;
}

.card h3 {
    font-size: 1.28rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #fff;
}

.card-sub {
    font-family: var(--mono);
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    color: var(--cyan);
    margin: 0.3rem 0 0.8rem;
    text-transform: uppercase;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 1.1rem;
}

.tags li {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
    background: rgba(0, 240, 255, 0.07);
    border: 1px solid rgba(0, 240, 255, 0.28);
    padding: 0.22rem 0.55rem;
}

.card-links {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.card-links a {
    flex: 1;
    text-align: center;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    padding: 0.6rem 0.4rem;
    border: 1px solid var(--line-hot);
    color: var(--text);
    transition: all 0.2s;
}

.card-links a:hover {
    background: var(--yellow);
    border-color: var(--yellow);
    color: #08080a;
    font-weight: 700;
}

/* --- 8. 技术栈面板 --- */
.panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.4rem;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-top: 2px solid var(--yellow);
    padding: 1.4rem 1.4rem 1.5rem;
    transition: transform 0.25s, box-shadow 0.25s;
}

.panel:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 38px rgba(0, 0, 0, 0.55);
}

.panel-head {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.26em;
    color: var(--yellow);
    margin-bottom: 1rem;
}

.panel-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    min-height: 96px;
    align-content: flex-start;
}

.panel-list li {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--text);
    border: 1px solid var(--line-hot);
    padding: 0.28rem 0.6rem;
    transition: border-color 0.2s, color 0.2s;
}

.panel-list li:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.panel-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.07);
    margin: 1.2rem 0 0.7rem;
    overflow: hidden;
}

.panel-bar span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--yellow), var(--cyan));
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
    transition: width 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.panel.in .panel-bar span {
    width: var(--fill, 70%);
}

.panel-foot {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    color: var(--muted);
}

/* --- 9. 链接行 --- */
.links {
    border-top: 1px solid var(--line);
}

.link-row {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: clamp(0.8rem, 3vw, 1.8rem);
    padding: 1.5rem 0.6rem;
    border-bottom: 1px solid var(--line);
    transition: background 0.22s, padding-left 0.22s;
}

.link-row:hover {
    background: linear-gradient(90deg, rgba(252, 238, 10, 0.09), transparent 70%);
    padding-left: 1.4rem;
}

.link-idx {
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--muted);
}

.link-name {
    font-size: clamp(1.2rem, 4vw, 1.75rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #fff;
}

.link-meta {
    font-family: var(--mono);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    color: var(--muted);
    text-align: right;
}

.link-arrow {
    font-family: var(--mono);
    font-size: 1.2rem;
    color: var(--yellow);
    transition: transform 0.22s;
}

.link-row:hover .link-arrow {
    transform: translate(4px, -4px);
}

/* --- 10. 页脚 --- */
.foot {
    max-width: var(--max);
    margin: clamp(4rem, 9vw, 6rem) auto 0;
    padding: 1.6rem clamp(1.2rem, 4vw, 2rem);
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    color: var(--muted);
    text-transform: uppercase;
}

.foot b {
    color: #3dff9a;
}

.foot-mid {
    color: var(--line-hot);
}

/* --- 11. 入场动画与响应式 --- */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.in {
    opacity: 1;
    transform: none;
}

.grid .reveal:nth-child(2),
.panels .reveal:nth-child(2) { transition-delay: 0.1s; }

.grid .reveal:nth-child(3) { transition-delay: 0.2s; }

.grid .reveal:nth-child(4) { transition-delay: 0.3s; }

@media (min-width: 760px) {
    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    /* 5 张卡片时让最后一张横跨整行，避免出现空格子 */
    .card-wide {
        grid-column: 1 / -1;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-end;
    }

    .card-wide .card-top {
        width: 100%;
    }

    .card-wide .card-body {
        flex: 1 1 340px;
    }

    .card-wide .card-links {
        flex-direction: column;
        min-width: 190px;
        margin-top: 0;
        padding-top: 0;
        padding-left: 1.3rem;
        border-top: 0;
        border-left: 1px solid var(--line);
    }
}

@media (max-width: 720px) {
    .hud-nav,
    .hud-status {
        display: none;
    }

    .link-row {
        grid-template-columns: auto 1fr auto;
    }

    .link-meta {
        display: none;
    }

    .hero-corner {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}