:root {
    --bg0: #070a14;
    --bg1: #0b1020;
    --card: rgba(255, 255, 255, .06);
    --card2: rgba(255, 255, 255, .09);
    --text: #e7e9ff;
    --muted: rgba(231, 233, 255, .72);
    --line: rgba(231, 233, 255, .14);
    --accent: #9aa7ff;
    --accent2: #c7b6ff;
    --shadow: 0 18px 60px rgba(0, 0, 0, .45);
    --radius: 18px;
    --radius2: 24px;
    --max: 1120px;
}

[data-theme="light"] {
    --bg0: #f7f8ff;
    --bg1: #eef0ff;
    --card: rgba(20, 25, 60, .06);
    --card2: rgba(20, 25, 60, .09);
    --text: #0a0f22;
    --muted: rgba(10, 15, 34, .70);
    --line: rgba(10, 15, 34, .14);
    --accent: #4556ff;
    --accent2: #7b5cff;
    --shadow: 0 18px 60px rgba(10, 15, 34, .16);
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
    color: var(--text);
    background: linear-gradient(180deg, var(--bg0), var(--bg1));
    overflow-x: hidden;
}

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px;
}

.bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
}

.bg__grid {
    position: absolute;
    inset: -2px;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, .06) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(circle at 30% 10%, rgba(0, 0, 0, .8), rgba(0, 0, 0, 0));
    opacity: .35;
}

.bg__blob {
    position: absolute;
    width: 680px;
    height: 680px;
    filter: blur(60px);
    opacity: .55;
    background: radial-gradient(circle at 30% 30%, var(--accent), transparent 60%),
        radial-gradient(circle at 70% 60%, var(--accent2), transparent 60%);
    transform: translate3d(0, 0, 0);
    animation: float 12s ease-in-out infinite;
}

.bg__blob--1 {
    left: -220px;
    top: -220px;
}

.bg__blob--2 {
    right: -220px;
    bottom: -240px;
    animation-delay: -4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0) scale(1)
    }

    50% {
        transform: translateY(22px) translateX(18px) scale(1.03)
    }
}

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 50;
    background: transparent;
}

.topbar__progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(14px);
    background: rgba(10, 12, 24, .55);
    border-bottom: 1px solid var(--line);
}

[data-theme="light"] .header {
    background: rgba(247, 248, 255, .70);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 14px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}

.brand__mark {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .02));
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    font-weight: 700;
    letter-spacing: .5px;
}

.brand__text {
    font-weight: 650;
    font-size: 14px;
    opacity: .92;
}

.nav {
    display: flex;
    gap: 18px;
    align-items: center;
}

.nav__link {
    text-decoration: none;
    color: var(--muted);
    font-size: 14px;
    padding: 8px 10px;
    border-radius: 12px;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}

.nav__link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, .06);
    transform: translateY(-1px);
}

.nav__link.is-active {
    color: var(--text);
    background: rgba(255, 255, 255, .10);
    border: 1px solid var(--line);
}

.actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .06);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    user-select: none;
}

.btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, .09);
}

.btn:active {
    transform: translateY(0px);
}

.btn--primary {
    background: linear-gradient(135deg, rgba(154, 167, 255, .25), rgba(199, 182, 255, .18));
    border-color: rgba(199, 182, 255, .35);
}

.btn--ghost {
    background: rgba(255, 255, 255, .04);
}

.btn--shine {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(154, 167, 255, .28), rgba(199, 182, 255, .22));
    border-color: rgba(199, 182, 255, .40);
}

.btn--shine::after {
    content: "";
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .28), transparent 40%);
    transform: translateX(-40%);
    animation: shine 3.2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shine {

    0%,
    100% {
        transform: translateX(-45%)
    }

    50% {
        transform: translateX(35%)
    }
}

.btn__icon {
    opacity: .9
}

.btn__text {
    font-size: 13px;
    opacity: .92
}

.hero {
    padding: 52px 0 24px;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 26px;
    align-items: center;
}

.kicker {
    font-size: 13px;
    color: var(--muted);
    letter-spacing: .6px;
    text-transform: none;
    margin-bottom: 14px;
}

.title {
    font-family: "Noto Serif SC", "Songti SC", "STSong", "Times New Roman", serif;
    font-size: 52px;
    font-weight: 560;
    line-height: 1.03;
    margin: 0 0 16px;
    letter-spacing: -.9px;
}

.title__muted {
    font-family: "Georgia", "Times New Roman", serif;
    font-weight: 500;
    color: color-mix(in oklab, var(--muted) 86%, var(--accent) 14%);
    font-size: .52em;
    margin-left: 10px;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.lead {
    display: block;
    font-size: 15px;
    color: var(--text);
    line-height: 1.6;
    margin: 0 0 18px;
    max-width: 76ch;
    border-top: 1px solid color-mix(in oklab, var(--line) 76%, var(--accent) 24%);
    border-bottom: 1px solid color-mix(in oklab, var(--line) 76%, var(--accent) 24%);
    padding: 7px 0;
    counter-reset: title-item;
}

.lead__item {
    counter-increment: title-item;
    position: relative;
    display: block;
    border: 0;
    border-radius: 0;
    padding: 12px 10px 12px 52px;
    background: transparent;
    border-bottom: 1px solid color-mix(in oklab, var(--line) 82%, transparent);
}

.lead__item::before {
    content: counter(title-item, decimal-leading-zero);
    position: absolute;
    left: 8px;
    top: 12px;
    width: 34px;
    text-align: left;
    font-family: "Georgia", "Times New Roman", serif;
    font-size: 12px;
    letter-spacing: .08em;
    color: color-mix(in oklab, var(--muted) 80%, var(--accent) 20%);
}

.lead__item::after {
    content: "";
    position: absolute;
    left: 41px;
    top: 14px;
    width: 1px;
    height: calc(100% - 28px);
    background: color-mix(in oklab, var(--line) 70%, var(--accent) 30%);
}

.lead__item:last-child {
    border-bottom: 0;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 18px;
}

.chip {
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .05);
    font-size: 13px;
    color: var(--text);
}

.hero__cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 16px 0 22px;
}

.meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.meta__item {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .04);
    border-radius: var(--radius);
    padding: 12px 12px;
}

.meta__label {
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 6px;
}

.meta__value {
    font-size: 14px;
    font-weight: 620;
}

.portrait {
    position: relative;
    width: min(320px, 88vw);
    aspect-ratio: 4/5;
    border-radius: var(--radius2);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    background: rgba(255, 255, 255, .04);
    margin-left: auto;
}

.portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.02);
}

.portrait__ring {
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    border: 1px solid rgba(199, 182, 255, .28);
    box-shadow: inset 0 0 0 1px rgba(154, 167, 255, .22);
    pointer-events: none;
}

.card {
    border: 1px solid var(--line);
    background: var(--card);
    border-radius: var(--radius2);
    padding: 18px 18px;
    box-shadow: var(--shadow);
}

.card--floating {
    margin-left: auto;
    margin-top: 14px;
    width: min(360px, 88vw);
    background: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .04));
}

.card__title {
    font-weight: 700;
    margin-bottom: 8px;
}

.card__text {
    color: var(--muted);
    line-height: 1.7;
}

.section {
    padding: 46px 0;
}

.section__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.h2 {
    margin: 0;
    font-size: 26px;
    letter-spacing: -.2px;
}

.sub {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
    max-width: 70ch;
}

.grid {
    display: grid;
    gap: 16px;
}

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

.panel {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .04);
    border-radius: var(--radius2);
    padding: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .14);
}

.h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.quote {
    margin-top: 14px;
    padding: 14px 14px;
    border-radius: 16px;
    border: 1px dashed rgba(199, 182, 255, .35);
    background: rgba(154, 167, 255, .10);
    color: var(--text);
    line-height: 1.7;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.card--hover {
    transition: transform .2s ease, background .2s ease;
}

.card--hover:hover {
    transform: translateY(-4px);
    background: var(--card2);
}

.card__icon {
    font-size: 18px;
    opacity: .9
}

.card__h {
    margin: 10px 0 6px;
    font-size: 18px;
}

.card__p {
    margin: 0 0 12px;
    color: var(--muted);
    line-height: 1.7;
}

.list {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
    line-height: 1.8;
}

.list li {
    margin: 6px 0;
}

.timeline {
    border: 1px solid var(--line);
    border-radius: var(--radius2);
    background: rgba(255, 255, 255, .035);
    padding: 16px 16px;
}

.timeline__item {
    display: grid;
    grid-template-columns: 18px 1fr;
    gap: 12px;
    padding: 12px 6px;
}

.timeline__dot {
    width: 10px;
    height: 10px;
    border-radius: 99px;
    margin-top: 6px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    box-shadow: 0 0 0 6px rgba(154, 167, 255, .12);
}

.timeline__h {
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline__p {
    color: var(--muted);
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.tag {
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .04);
    color: var(--text);
    font-size: 13px;
}

.ctaRow {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.hint {
    margin-top: 12px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.mini {
    margin-top: 14px;
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

.mini__row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 6px 0;
    color: var(--muted);
    font-size: 13px;
}

.mini__k {
    opacity: .9
}

.mini__v {
    color: var(--text);
    opacity: .85
}

.footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0 32px;
    color: var(--muted);
}

.footer__link {
    color: var(--muted);
    text-decoration: none;
}

.footer__link:hover {
    color: var(--text);
}

.reveal {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .7s ease, transform .7s ease;
}

.reveal.is-in {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 980px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .portrait,
    .card--floating {
        margin-left: 0;
    }

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

    .grid--2 {
        grid-template-columns: 1fr;
    }

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

    .nav {
        display: none;
    }

    .title {
        font-size: 42px;
    }

    .lead {
        font-size: 14px;
    }

    .lead__item {
        padding: 10px 8px 10px 48px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }

    html {
        scroll-behavior: auto;
    }
}