:root {
    --ink: #2d2016;
    --ink-soft: #5f4b38;
    --paper-1: #f7eedf;
    --paper-2: #e4cfaa;
    --panel: rgba(255, 248, 234, 0.85);
    --line: rgba(108, 72, 42, 0.22);
    --shadow: 0 16px 34px rgba(65, 38, 17, 0.16);
    --accent: #a24a1d;
    --accent-strong: #712f13;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: inherit;
}

.dynasty-home {
    min-height: 100vh;
    color: var(--ink);
    font-family: "STKaiti", "KaiTi", "SimSun", serif;
    background:
        radial-gradient(circle at 86% 8%, rgba(112, 64, 31, 0.22) 0, transparent 35%),
        radial-gradient(circle at 8% 13%, rgba(184, 123, 74, 0.24) 0, transparent 36%),
        linear-gradient(180deg, var(--paper-1) 0%, var(--paper-2) 100%);
    position: relative;
}

.dynasty-home::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.18;
    background-image:
        repeating-linear-gradient(
            90deg,
            transparent 0,
            transparent 34px,
            rgba(120, 82, 50, 0.05) 35px
        );
}

.home-shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 1rem auto 2.2rem;
    position: relative;
    z-index: 1;
}

.home-top {
    position: sticky;
    top: 0.8rem;
    z-index: 8;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.9rem;
    padding: 0.75rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.brand-logo {
    width: auto;
    height: 64px;
    max-width: 64px;
    border-radius: 12px;
    border: 1px solid rgba(118, 75, 39, 0.24);
    object-fit: contain;
    background: #fff5e2;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-text strong {
    font-size: clamp(1.35rem, 2.1vw, 1.7rem);
    letter-spacing: 0.05em;
}

.brand-text small {
    margin-top: 0.1rem;
    letter-spacing: 0.2em;
    color: var(--ink-soft);
    font-size: 0.76rem;
}

.top-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.45rem;
}

.top-links a {
    border-radius: 999px;
    border: 1px solid rgba(123, 78, 44, 0.2);
    color: #fff8ec;
    background: linear-gradient(120deg, var(--accent-strong) 0%, var(--accent) 100%);
    padding: 0.38rem 0.84rem;
    box-shadow: 0 8px 15px rgba(111, 52, 21, 0.22);
    transition: all 0.24s ease;
}

.top-links a:hover {
    transform: translateY(-2px);
    filter: saturate(1.12);
    box-shadow: 0 11px 18px rgba(111, 52, 21, 0.3);
}

.top-links .is-active {
    border-color: rgba(255, 229, 197, 0.28);
    background: linear-gradient(120deg, #6a2a10 0%, #8d3714 100%);
    box-shadow: 0 10px 18px rgba(96, 40, 15, 0.28);
}

.hero {
    margin-top: 1rem;
    border-radius: 26px;
    padding: clamp(1.35rem, 3.2vw, 2.45rem);
    display: grid;
    grid-template-columns: minmax(0, 1.22fr) minmax(320px, 0.78fr);
    gap: 1.1rem;
    align-items: stretch;
    color: #f7f0e4;
    background:
        radial-gradient(circle at 18% 18%, rgba(224, 131, 67, 0.2) 0, transparent 26%),
        radial-gradient(circle at 82% 24%, rgba(255, 215, 170, 0.08) 0, transparent 28%),
        radial-gradient(circle at 76% 78%, rgba(161, 88, 43, 0.18) 0, transparent 32%),
        linear-gradient(118deg, rgba(68, 34, 18, 0.98) 0%, rgba(132, 70, 30, 0.94) 52%, rgba(76, 40, 23, 0.96) 100%);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
    animation: lift-in 0.75s ease both;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(90deg, rgba(255, 223, 186, 0.045) 0, rgba(255, 223, 186, 0.045) 1px, transparent 1px, transparent 122px),
        linear-gradient(180deg, rgba(255, 223, 186, 0.03) 0, rgba(255, 223, 186, 0.03) 1px, transparent 1px, transparent 96px),
        radial-gradient(circle at 70% 50%, rgba(255, 196, 145, 0.1) 0, transparent 38%);
    opacity: 0.55;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 228, 195, 0.25);
    border-radius: 26px;
    box-shadow: inset 0 1px 0 rgba(255, 240, 219, 0.08);
    pointer-events: none;
}

.hero-main,
.hero-side {
    position: relative;
    z-index: 1;
}

.hero-main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100%;
}

.hero-kicker {
    font-size: 0.84rem;
    letter-spacing: 0.2em;
    color: rgba(255, 235, 209, 0.82);
}

.hero-main h1 {
    margin-top: 0.26rem;
    margin-bottom: 0.76rem;
    font-size: clamp(2rem, 4.4vw, 3.3rem);
    letter-spacing: 0.06em;
    text-shadow: 0 10px 28px rgba(32, 16, 9, 0.26);
}

.hero-main p {
    max-width: 47ch;
    line-height: 1.82;
    color: rgba(249, 238, 223, 0.96);
}

.hero-actions {
    margin-top: 1.1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.primary-btn,
.ghost-btn {
    border-radius: 999px;
    padding: 0.5rem 1.05rem;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.primary-btn {
    color: #fff8ed;
    background: linear-gradient(120deg, #c5622f 0%, #8f3d18 100%);
    border: 1px solid rgba(255, 227, 189, 0.25);
    box-shadow: 0 12px 24px rgba(96, 42, 16, 0.24);
}

.ghost-btn {
    color: #ffe9c9;
    border: 1px solid rgba(255, 227, 189, 0.3);
    background: rgba(255, 243, 224, 0.1);
    backdrop-filter: blur(4px);
}

.primary-btn:hover,
.ghost-btn:hover {
    transform: translateY(-2px);
}

.primary-btn:hover {
    box-shadow: 0 16px 28px rgba(96, 42, 16, 0.32);
}

.ghost-btn:hover {
    border-color: rgba(255, 231, 203, 0.45);
    background: rgba(255, 243, 224, 0.14);
}

.hero-side {
    display: grid;
    gap: 0.55rem;
    align-content: center;
}

.hero-side article {
    min-height: auto;
    border-radius: 12px;
    border: 1px solid rgba(255, 225, 191, 0.25);
    background: rgba(255, 246, 230, 0.08);
    padding: 0.72rem 0.82rem;
}

.hero-side h3 {
    font-size: clamp(1.24rem, 2.2vw, 1.56rem);
    line-height: 1.1;
    letter-spacing: 0.04em;
    color: #fff4e6;
}

.hero-side p {
    margin-top: 0.2rem;
    color: rgba(245, 232, 214, 0.96);
    line-height: 1.6;
}

.section-panel {
    margin-top: 1rem;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: var(--shadow);
    padding: 1rem;
    animation: lift-in 0.8s ease both;
}

.section-head h2 {
    font-size: 1.58rem;
    color: var(--accent-strong);
}

.section-head p {
    margin-top: 0.22rem;
    color: var(--ink-soft);
}

.dynasty-grid {
    margin-top: 0.9rem;
    display: grid;
    gap: 0.78rem;
    grid-template-columns: 1fr;
}

.dynasty-card {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    border-radius: 18px;
    border: 1px solid rgba(125, 86, 54, 0.24);
    border-left: 6px solid var(--tone);
    background: rgba(255, 250, 241, 0.16);
    padding: 1rem 1.05rem;
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 0.75rem;
    min-height: 184px;
    box-shadow: 0 10px 24px rgba(75, 44, 20, 0.15);
    transition: transform 0.26s ease, box-shadow 0.26s ease, border-color 0.26s ease;
    transform: translateY(16px);
    opacity: 0;
    animation: lift-in 0.65s ease forwards;
}

.dynasty-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--scroll-image) var(--scroll-position, center)/cover no-repeat;
    opacity: 0.98;
    transform: scale(1.02);
    z-index: -2;
}

.dynasty-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(34, 22, 13, 0.86) 0%,
        rgba(39, 24, 15, 0.72) 44%,
        rgba(50, 31, 18, 0.38) 72%,
        rgba(55, 34, 19, 0.2) 100%
    );
    z-index: -1;
}

.dynasty-card:nth-child(1) { animation-delay: 0.1s; }
.dynasty-card:nth-child(2) { animation-delay: 0.18s; }
.dynasty-card:nth-child(3) { animation-delay: 0.26s; }
.dynasty-card:nth-child(4) { animation-delay: 0.34s; }
.dynasty-card:nth-child(5) { animation-delay: 0.42s; }

.dynasty-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 233, 197, 0.44);
    box-shadow: 0 16px 30px rgba(62, 36, 18, 0.3);
}

.card-content {
    position: relative;
    z-index: 1;
    max-width: 60ch;
}

.era {
    width: fit-content;
    border-radius: 999px;
    padding: 0.2rem 0.62rem;
    font-size: 0.82rem;
    color: #fff8ef;
    background: var(--tone);
    box-shadow: 0 6px 12px rgba(21, 13, 8, 0.24);
}

.dynasty-card h3 {
    margin-top: 0.42rem;
    font-size: clamp(2rem, 3.6vw, 2.5rem);
    line-height: 1;
    color: #fff2df;
    text-shadow: 0 4px 14px rgba(17, 10, 6, 0.35);
}

.dynasty-card p {
    margin-top: 0.46rem;
    line-height: 1.64;
    color: #f4e8d6;
    text-shadow: 0 2px 8px rgba(16, 10, 7, 0.3);
}

.enter {
    margin-top: 0.52rem;
    display: inline-block;
    font-weight: 700;
    color: #ffe8c4;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 8px rgba(16, 10, 7, 0.3);
}

.enter::after {
    content: "  →";
}

.tang {
    --tone: #d45a24;
    --tone-dark: rgba(92, 28, 18, 0.96);
    --tone-mid: rgba(151, 48, 28, 0.9);
    --tone-light: rgba(224, 109, 52, 0.76);
    --scroll-image: url("../Photo/阎立本步辇图卷.png");
}

.song {
    --tone: #2d6a4a;
    --tone-dark: rgba(22, 45, 33, 0.96);
    --tone-mid: rgba(41, 96, 71, 0.9);
    --tone-light: rgba(96, 148, 116, 0.72);
    --scroll-image: url("../Photo/王希孟千里江山卷.png");
    --scroll-position: 50% 74%;
}

.yuan {
    --tone: #2c5787;
    --tone-dark: rgba(24, 41, 67, 0.96);
    --tone-mid: rgba(40, 86, 134, 0.9);
    --tone-light: rgba(97, 145, 191, 0.7);
    --scroll-image: url("../Photo/黄公望富春山居图.png");
}

.ming {
    --tone: #cf9d25;
    --tone-dark: rgba(92, 61, 15, 0.96);
    --tone-mid: rgba(182, 133, 28, 0.92);
    --tone-light: rgba(235, 194, 73, 0.76);
    --scroll-image: url("../Photo/仇英汉宫春晓图.jpg");
}

.qing {
    --tone: #8848dc;
    --tone-dark: rgba(44, 24, 82, 0.96);
    --tone-mid: rgba(107, 59, 181, 0.92);
    --tone-light: rgba(171, 110, 255, 0.76);
    --scroll-image: url("../Photo/郎世宁百骏图.jpg");
}

.portal-grid {
    margin-top: 1rem;
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.portal-card {
    border-radius: 15px;
    border: 1px solid var(--line);
    background: rgba(255, 249, 238, 0.88);
    box-shadow: var(--shadow);
    padding: 0.9rem;
    transition: transform 0.23s ease;
}

.portal-card:hover {
    transform: translateY(-4px);
}

.portal-card h4 {
    font-size: 1.24rem;
    color: var(--accent-strong);
}

.portal-card p {
    margin-top: 0.36rem;
    line-height: 1.62;
    color: var(--ink-soft);
}

.home-footer {
    margin-top: 0.95rem;
    text-align: center;
    color: #594534;
}

@keyframes lift-in {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 980px) {
    .home-top {
        position: static;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 0.9rem;
    }

    .hero-side {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-content: start;
    }

    .dynasty-card {
        min-height: 170px;
    }

    .portal-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .home-shell {
        width: calc(100% - 1rem);
        margin-top: 0.56rem;
    }

    .home-top {
        padding: 0.8rem 0.85rem;
        gap: 0.8rem;
    }

    .brand {
        width: 100%;
        min-width: 0;
    }

    .brand-text {
        min-width: 0;
    }

    .brand-text strong {
        font-size: 1.18rem;
        line-height: 1.1;
    }

    .brand-text small {
        font-size: 0.66rem;
        letter-spacing: 0.12em;
        line-height: 1.25;
    }

    .top-links {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        justify-content: stretch;
        gap: 0.35rem;
    }

    .top-links a {
        display: flex;
        align-items: center;
        justify-content: center;
        min-width: 0;
        text-align: center;
        white-space: nowrap;
        font-size: 0.88rem;
        letter-spacing: 0.01em;
        padding: 0.42rem 0.18rem;
    }

    .brand-logo {
        width: auto;
        height: 56px;
        max-width: 56px;
    }

    .hero-side {
        grid-template-columns: 1fr;
    }

    .hero-side article {
        min-height: auto;
        padding: 0.78rem 0.88rem;
    }

    .dynasty-card {
        grid-template-columns: 1fr;
        min-height: 176px;
        padding: 0.9rem 0.88rem;
    }
}

@media (max-width: 420px) {
    .brand-text strong {
        font-size: 1.08rem;
    }

    .brand-text small {
        font-size: 0.6rem;
        letter-spacing: 0.08em;
    }

    .top-links {
        gap: 0.28rem;
    }

    .top-links a {
        font-size: 0.8rem;
        padding: 0.4rem 0.1rem;
    }
}