/* 教材配套网站样式 - 植被三维辐射传输建模与应用 */
:root {
    --paper: #f7f8f3;
    --paper-deep: #ecf0e6;
    --ink: #18201c;
    --ink-soft: #526159;
    --ink-mute: #78877f;
    --forest: #1f4d3a;
    --canopy: #2a9d8f;
    --sun: #e89a3c;
    --leaf: #87a96b;
    --line: #d8e2dc;
    --panel: rgba(255, 255, 255, 0.72);
    --shadow: 0 24px 60px rgba(31, 77, 58, 0.12);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        linear-gradient(90deg, rgba(31, 77, 58, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(31, 77, 58, 0.03) 1px, transparent 1px),
        var(--paper);
    background-size: 32px 32px;
    font-family: "Noto Sans SC", "Inter", "Microsoft YaHei", sans-serif;
    line-height: 1.65;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(216, 226, 220, 0.88);
    background: rgba(247, 248, 243, 0.88);
    backdrop-filter: blur(14px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    width: min(1160px, calc(100% - 40px));
    height: 68px;
    margin: 0 auto;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
}

.brand-mark {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    color: white;
    background: var(--forest);
    border-radius: 50%;
    font-family: "JetBrains Mono", monospace;
    font-size: 13px;
    letter-spacing: 0;
}

.brand-text {
    display: grid;
    line-height: 1.15;
}

.brand-title {
    font-size: 15px;
}

.brand-subtitle {
    color: var(--ink-mute);
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 11px;
    color: var(--ink-soft);
    border-radius: 999px;
    font-size: 14px;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--forest);
    background: rgba(42, 157, 143, 0.1);
}

.page {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
    align-items: center;
    gap: 48px;
    min-height: calc(100vh - 68px);
    padding: 54px 0 72px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--forest);
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    font-weight: 500;
}

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

.hero-title,
.page-title {
    margin: 0;
    font-family: "Noto Serif SC", "Source Han Serif SC", serif;
    font-weight: 700;
    line-height: 1.16;
    letter-spacing: 0;
}

.hero-title {
    max-width: 780px;
    font-size: clamp(40px, 6.2vw, 74px);
}

.hero-title span {
    display: block;
    color: var(--forest);
}

.hero-copy {
    max-width: 650px;
    margin: 22px 0 0;
    color: var(--ink-soft);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--forest);
    border-radius: 999px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(31, 77, 58, 0.16);
}

.button-primary {
    color: white;
    background: var(--forest);
}

.button-secondary {
    color: var(--forest);
    background: rgba(255, 255, 255, 0.6);
}

.hero-visual {
    position: relative;
    min-height: 520px;
    overflow: hidden;
    border: 1px solid rgba(31, 77, 58, 0.16);
    border-radius: var(--radius);
    background:
        radial-gradient(circle at 72% 18%, rgba(232, 154, 60, 0.22), transparent 28%),
        linear-gradient(180deg, #fafff5 0%, #dfead7 100%);
    box-shadow: var(--shadow);
}

.hero-visual canvas {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 520px;
}

.book-cover-visual {
    display: grid;
    min-height: 520px;
    place-items: center;
    padding: 30px;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
}

.book-cover {
    display: block;
    width: min(100%, 430px);
    max-height: 520px;
    object-fit: contain;
    border-radius: 6px;
    filter: drop-shadow(0 28px 45px rgba(24, 32, 28, 0.22));
}

.visual-label {
    position: absolute;
    right: 18px;
    bottom: 18px;
    padding: 9px 12px;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(216, 226, 220, 0.9);
    border-radius: var(--radius);
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
}

.section {
    padding: 70px 0;
    border-top: 1px solid var(--line);
}

.section-header {
    display: grid;
    grid-template-columns: minmax(220px, 340px) minmax(0, 1fr);
    gap: 54px;
    margin-bottom: 30px;
}

.section-header-stacked {
    display: block;
    max-width: 900px;
}

.section-header-stacked .section-title {
    margin-bottom: 18px;
}

.section-title {
    margin: 0;
    font-family: "Noto Serif SC", serif;
    font-size: 32px;
    line-height: 1.25;
}

.section-copy {
    margin: 0;
    color: var(--ink-soft);
    font-size: 16px;
}

.section-copy-spaced {
    margin-top: 14px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

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

.card {
    min-height: 180px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: 0 12px 30px rgba(31, 77, 58, 0.06);
}

.card-kicker {
    color: var(--canopy);
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    font-weight: 500;
}

.card h3 {
    margin: 12px 0 8px;
    font-size: 20px;
    line-height: 1.35;
}

.card p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14px;
}

.author-card {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    min-height: auto;
}

.author-card p {
    font-size: 15px;
    line-height: 1.85;
}

.author-photo {
    width: 150px;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--paper-deep);
}

.author-content h3 {
    margin-top: 8px;
}

.resource-list {
    display: grid;
    gap: 12px;
}

.resource-item {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr) auto;
    gap: 18px;
    align-items: center;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.62);
}

.resource-type {
    color: var(--forest);
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    font-weight: 600;
}

.resource-name {
    font-weight: 700;
}

.resource-desc {
    color: var(--ink-soft);
    font-size: 14px;
}

.status {
    padding: 4px 9px;
    color: var(--forest);
    background: rgba(42, 157, 143, 0.12);
    border-radius: 999px;
    font-size: 12px;
    white-space: nowrap;
}

.feature-band {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 28px;
    align-items: stretch;
    padding: 28px;
    border: 1px solid rgba(31, 77, 58, 0.16);
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(31, 77, 58, 0.96), rgba(42, 94, 63, 0.92));
    color: white;
}

.feature-band p {
    color: rgba(255, 255, 255, 0.78);
}

.mini-map {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.mini-map span {
    min-height: 76px;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.08);
    font-size: 13px;
}

.page-hero {
    padding: 72px 0 44px;
}

.page-title {
    font-size: clamp(36px, 5vw, 58px);
}

.page-copy {
    max-width: 760px;
    margin: 18px 0 0;
    color: var(--ink-soft);
    font-size: 17px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.62);
}

table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
}

th,
td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--forest);
    font-size: 13px;
}

td {
    color: var(--ink-soft);
    font-size: 14px;
}

.author-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 36px;
}

.portrait {
    display: grid;
    min-height: 360px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        radial-gradient(circle at 50% 22%, rgba(232, 154, 60, 0.22), transparent 22%),
        linear-gradient(180deg, rgba(42, 157, 143, 0.14), rgba(31, 77, 58, 0.12));
    color: var(--forest);
    font-family: "Noto Serif SC", serif;
    font-size: 48px;
    font-weight: 700;
}

.footer {
    margin-top: 56px;
    padding: 30px 0;
    border-top: 1px solid var(--line);
    color: var(--ink-mute);
    font-size: 13px;
}

.author-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.author-token {
    padding: 10px 14px;
    color: var(--forest);
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.58);
    font-weight: 600;
}

.compact-actions {
    margin-top: 24px;
}

.home-author-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    margin-top: 28px;
}

.home-author-card {
    padding: 16px 14px;
    text-align: center;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.62);
    box-shadow: 0 12px 30px rgba(31, 77, 58, 0.05);
}

.home-author-card img {
    display: block;
    width: 96px;
    aspect-ratio: 1;
    margin: 0 auto 12px;
    object-fit: cover;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--paper-deep);
}

.home-author-card h3 {
    margin: 0 0 4px;
    font-size: 17px;
}

.home-author-card p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 13px;
}

.animation-frame {
    width: 100%;
    min-height: 720px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: white;
}

@media (max-width: 920px) {
    .nav {
        height: auto;
        padding: 14px 0;
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-links {
        flex-wrap: wrap;
    }

    .hero,
    .section-header,
    .feature-band,
    .author-layout {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 44px;
    }

    .hero-visual,
    .hero-visual canvas {
        min-height: 380px;
    }

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

    .resource-item {
        grid-template-columns: 1fr;
    }

    .home-author-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .author-card {
        grid-template-columns: 110px minmax(0, 1fr);
        gap: 16px;
    }

    .author-photo {
        width: 110px;
    }
}

@media (max-width: 560px) {
    .page,
    .nav {
        width: min(100% - 28px, 1160px);
    }

    .brand-subtitle {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .mini-map {
        grid-template-columns: 1fr;
    }

    .home-author-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .author-card {
        grid-template-columns: 1fr;
    }

    .author-photo {
        width: min(180px, 100%);
    }
}