/* ============================================================
   03-layout.css — 页面布局：顶栏、日夜切换、滚动字幕、主区、站点卡片、页脚、提示条
   ============================================================ */

/* ---------- 顶栏 ---------- */
        .topbar {
            position: relative;
            z-index: 20;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 22px var(--pad);
            background: var(--ink);
            border-bottom: 2px solid var(--line);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 14px;
            text-decoration: none;
            color: var(--paper);
        }

        .brand__logo {
            display: block;
            width: 65px;
            height: 28px;
            flex: none;
            overflow: visible;
            image-rendering: pixelated;
            transition: transform 0.2s steps(2);
        }

        .brand__logo svg {
            display: block;
            width: 100%;
            height: 100%;
        }

        .brand__logo .fx-glow {
            opacity: 0.9;
        }

        .brand__logo span {
            color: var(--blue);
        }

        .brand:hover .brand__logo {
            transform: scale(1.04);
        }

        .brand__divider {
            width: 2px;
            height: 22px;
            background: var(--line);
        }

        .brand__text {
            display: flex;
            gap: 2px;
            font-family: var(--font-cn);
            font-size: 19px;
            line-height: 1;
            letter-spacing: 0.02em;
        }

        .brand__text i {
            font-style: normal;
        }

        /* 品牌双色 */
        .ake { color: var(--pink); }
        .zhan { color: var(--blue); }

        .topbar__meta {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-left: auto;
            font-family: var(--font-mono);
            font-size: 10px;
            letter-spacing: 0.18em;
            color: var(--dim);
            text-transform: uppercase;
            white-space: nowrap;
        }

        .topbar__meta b {
            color: var(--paper);
            font-weight: 500;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.1em;
        }

        .topbar__meta .dot-live {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--pink);
            margin-right: 7px;
            box-shadow: 0 0 0 2px color-mix(in srgb, var(--pink) 25%, transparent);
            animation: blink 2.4s steps(1) infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.25; }
        }

/* ---------- 日夜切换 ---------- */
        .theme-toggle {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            height: 30px;
            padding: 0 10px;
            border: 2px solid var(--line);
            border-radius: 0;
            background: var(--panel);
            box-shadow: var(--shadow-block-sm);
            color: var(--dim);
            font-family: var(--font-cn);
            font-size: 11px;
            letter-spacing: 0.02em;
            text-transform: uppercase;
            cursor: none;
            flex: none;
            transition: color 0.15s steps(2), border-color 0.15s steps(2), transform 0.15s steps(2), box-shadow 0.15s steps(2);
        }

        .theme-toggle svg {
            width: 14px;
            height: 14px;
            flex: none;
        }

        .theme-toggle:hover {
            color: var(--paper);
            border-color: color-mix(in srgb, var(--pink) 60%, transparent);
            transform: translate(-1px, -1px);
            box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
        }

        .theme-toggle:active {
            transform: translate(2px, 2px);
            box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.5);
        }

        .theme-toggle .lbl-light,
        .theme-toggle .icon-moon { display: none; }

        html[data-theme="light"] .theme-toggle .lbl-light { display: inline; }
        html[data-theme="light"] .theme-toggle .lbl-dark { display: none; }
        html[data-theme="light"] .theme-toggle .icon-sun { display: none; }
        html[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* ---------- 滚动字幕 ---------- */
        .marquee {
            position: relative;
            z-index: 20;
            overflow: hidden;
            border-bottom: 2px solid var(--line);
            background: color-mix(in srgb, var(--pink) 5%, var(--ink));
        }

        .marquee__track {
            display: flex;
            width: max-content;
            animation: marquee 34s linear infinite;
        }

        .marquee__track span {
            display: block;
            padding: 9px 0;
            font-family: var(--font-mono);
            font-size: 10px;
            letter-spacing: 0.28em;
            text-transform: uppercase;
            color: var(--dim);
            white-space: nowrap;
        }

        .marquee__track span::after {
            content: "◆";
            margin: 0 22px;
            color: var(--pink);
            font-size: 8px;
        }

        @keyframes marquee {
            to { transform: translateX(-50%); }
        }

/* ---------- 主区 ---------- */
        main {
            position: relative;
            z-index: 10;
        }

        .hero {
            position: relative;
            padding: clamp(36px, 5.5vw, 72px) var(--pad) clamp(28px, 4vw, 44px);
            min-height: calc(100svh - 176px);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: clamp(24px, 3.4vw, 40px);
        }

        .hero__lead {
            max-width: 100%;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-mono);
            font-size: 10px;
            letter-spacing: 0.24em;
            text-transform: uppercase;
            color: var(--dim);
            margin-bottom: clamp(8px, 1.2vh, 14px);
        }

        .eyebrow .pulse {
            width: 7px;
            height: 7px;
            background: var(--blue);
            box-shadow: 0 0 0 0 rgba(77, 132, 255, 0.5);
            animation: pulse 2.4s steps(1) infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(77, 132, 255, 0.55); }
            70% { box-shadow: 0 0 0 12px rgba(77, 132, 255, 0); }
            100% { box-shadow: 0 0 0 0 rgba(77, 132, 255, 0); }
        }

        .hero__title {
            position: relative;
            margin-bottom: clamp(20px, 2.6vw, 32px);
        }

        .hero__cn {
            display: block;
            overflow: hidden;
            padding: 0.14em 0 0.3em;
            margin-bottom: -0.21em;
        }

        .hero__cn span {
            display: block;
            font-family: var(--font-cn);
            font-size: clamp(94px, 17vw, 232px);
            line-height: 1;
            letter-spacing: 0.01em;
            color: var(--paper);
            text-shadow: var(--title-shadow);
            transform: translateY(108%);
            animation: riseMask 0.45s steps(5) 0.02s forwards;
        }

        .hero__cn i {
            font-style: normal;
        }

        .hero__cn span::selection {
            background: var(--pink);
            color: var(--ink);
        }

        @keyframes riseMask {
            to { transform: translateY(0); }
        }

        /* 英文logo */
        .hero__logo {
            display: block;
            font-family: var(--font-en);
            font-size: clamp(40px, 8vw, 80px);
            color: var(--pink);
            margin: clamp(10px, 1.6vh, 18px) 0 clamp(18px, 2.6vh, 32px);
            user-select: none;
            line-height: 1;
        }

        .hero__logo span {
            color: var(--blue);
        }

        .hero__lede {
            font-size: clamp(15px, 1.6vw, 19px);
            line-height: 1.75;
            color: var(--desc);
            letter-spacing: 0.01em;
        }

        .hero__lede em {
            display: inline-block;
            margin-top: 4px;
            font-family: var(--font-cn);
            font-style: normal;
            font-size: 1.5em;
            line-height: 1.35;
            letter-spacing: 0.04em;
            color: var(--pink);
        }

        .hero__lede em::after {
            content: "";
            display: inline-block;
            width: 0.46em;
            height: 0.78em;
            margin-left: 0.16em;
            background: var(--pink);
            vertical-align: -0.02em;
            animation: caret 1.1s steps(1) infinite;
        }

        @keyframes caret {
            0%, 49% { opacity: 1; }
            50%, 100% { opacity: 0; }
        }

        .hero__hint {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: clamp(18px, 2.6vw, 28px);
            font-family: var(--font-cn);
            font-size: 12px;
            letter-spacing: 0.02em;
            color: var(--dim);
        }

        .key {
            display: grid;
            place-items: center;
            width: 28px;
            height: 28px;
            border: 2px solid color-mix(in srgb, var(--paper) 32%, transparent);
            border-radius: 0;
            background: var(--panel);
            box-shadow: inset 0 2px 0 color-mix(in srgb, var(--paper) 14%, transparent), 0 4px 0 color-mix(in srgb, var(--paper) 20%, transparent);
            color: var(--paper);
            font-family: var(--font-en);
            font-size: 9px;
            line-height: 1;
            transition: transform 0.1s steps(2), box-shadow 0.1s steps(2), border-color 0.2s steps(2), color 0.2s steps(2);
        }

        .key:hover {
            color: var(--pink);
            border-color: color-mix(in srgb, var(--pink) 65%, transparent);
        }

        .key:active {
            transform: translateY(4px);
            box-shadow: inset 0 2px 0 color-mix(in srgb, var(--paper) 14%, transparent);
        }

        .hero__hint > span:last-child {
            margin-left: 8px;
        }

        .hero__side {
            display: flex;
            gap: 44px;
            padding-top: 18px;
            border-top: 2px solid var(--line);
            align-self: flex-start;
        }

        .stat b {
            display: block;
            font-family: var(--font-en);
            font-size: clamp(22px, 2.6vw, 32px);
            line-height: 1;
            font-weight: 400;
            letter-spacing: 0;
            color: var(--paper);
        }

        .stat b em {
            font-style: normal;
            color: var(--pink);
            font-family: var(--font-cn);
        }
        .stat b .inf {
            font-size: 1.15em;
            -webkit-text-stroke: 1.5px var(--pink);
        }

        /* 运行时长的年月日读数：中文紧凑排布，避免撑破 hero 侧栏 */
        .stat b .uptime {
            font-family: var(--font-cn);
            font-size: 24px;
            letter-spacing: 0.02em;
            color: var(--pink);
            -webkit-text-stroke: 0;
            white-space: nowrap;
            font-variant-numeric: tabular-nums;
        }

        .stat span {
            display: block;
            margin-top: 8px;
            font-family: var(--font-mono);
            font-size: 9px;
            letter-spacing: 0.22em;
            color: var(--dim);
            text-transform: uppercase;
        }

        .scroll-cue {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-mono);
            font-size: 9px;
            letter-spacing: 0.26em;
            color: var(--dim);
            text-transform: uppercase;
        }

        .scroll-cue::before {
            content: "";
            width: 46px;
            height: 1px;
            background: var(--line);
        }

/* ---------- 站点区 ---------- */
        .sites {
            padding: 0 var(--pad) clamp(64px, 9vw, 128px);
        }

        .sites__head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            padding-top: clamp(34px, 5vw, 56px);
            margin-bottom: clamp(22px, 3vw, 36px);
            border-top: 2px solid var(--line);
        }

        .sites__title {
            font-family: var(--font-cn);
            font-weight: 400;
            font-size: clamp(30px, 4.2vw, 54px);
            line-height: 1;
            letter-spacing: 0.02em;
        }

        .sites__title span {
            display: block;
            margin-top: 10px;
            font-family: var(--font-mono);
            font-size: 9px;
            letter-spacing: 0.32em;
            color: var(--dim);
            text-transform: uppercase;
        }

        .sites__note {
            max-width: 260px;
            font-family: var(--font-cn);
            font-size: 12px;
            line-height: 1.7;
            letter-spacing: 0.02em;
            color: var(--dim);
            text-align: right;
        }

        .sites__grid, .sites__acc {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: clamp(12px, 1.5vw, 20px);
        }

        .sites__acc {
            margin-top: clamp(12px, 1.5vw, 20px);
        }

        .card {
            --accent: var(--pink);
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            gap: clamp(16px, 2.4vh, 24px);
            min-height: clamp(250px, 26vw, 330px);
            padding: clamp(20px, 2.4vw, 32px);
            background: var(--panel);
            border: 2px solid var(--card-line);
            border-radius: 0;
            box-shadow: var(--shadow-block);
            text-decoration: none;
            color: var(--paper);
            overflow: hidden;
            isolation: isolate;
            transition: border-color 0.2s steps(2), translate 0.2s steps(2), box-shadow 0.2s steps(2), flex-grow 0.55s var(--ease);
            opacity: 0;
            transform: translateY(26px);
            animation: cardIn 0.5s var(--ease) var(--d, 0.4s) forwards;
        }

        @keyframes cardIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 站点强调色 */
        .accent-pink { --accent: var(--pink); }
        .accent-blue { --accent: var(--blue); }
        .accent-pink-soft { --accent: var(--pink-soft); }
        .accent-blue-soft { --accent: var(--blue-soft); }
        .accent-green { --accent: var(--green); }
        .accent-green-soft { --accent: var(--green-soft); }

        /* 悬停换色 */
        .card--green:hover, .card--green:focus-visible, .card--green:focus-within { --accent: var(--green); }
        .card--pink:hover, .card--pink:focus-visible, .card--pink:focus-within { --accent: var(--pink); }

        /* 卡片底纹图标 */
        .card__wm {
            --wm-op: 0.18;
            --wm-top: -34px;
            --wm-right: -26px;
            --wm-size: 192px;
            --wm-collapsed: 72px;
            position: absolute;
            z-index: 0;
            top: var(--wm-top);
            right: var(--wm-right);
            width: var(--wm-size);
            height: auto;
            opacity: var(--wm-op);
            image-rendering: pixelated;
            pointer-events: none;
            user-select: none;
            transition: opacity 0.2s steps(2);
        }

        .card__head, .card__body, .card__foot {
            position: relative;
            z-index: 1;
        }

        /* 顶部强调条 */
        .card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            height: 4px;
            width: 0;
            background: var(--accent);
            transition: width 0.3s steps(6), background-color 0s linear 0.3s;
        }

        .card:hover, .card:focus-visible {
            border-color: var(--accent);
            translate: -3px -3px;
            box-shadow: 9px 9px 0 color-mix(in srgb, var(--accent) 40%, transparent);
            outline: none;
        }

        .card:hover::after, .card:focus-visible::after {
            width: 100%;
            transition: width 0.3s steps(6), background-color 0s;
        }

        .card:hover .card__idx { color: var(--accent); transform: translateY(-2px); }
        .card:hover .card__arrow { background: var(--accent); color: var(--on-accent); transform: rotate(0deg); }
        .card:hover .card__title { transform: translateX(4px); }

        .card__head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 16px;
        }

        .card__idx {
            font-family: var(--font-en);
            font-size: clamp(34px, 3.6vw, 50px);
            line-height: 0.8;
            color: var(--idx);
            letter-spacing: 0;
            transition: color 0.2s steps(2), transform 0.2s steps(2);
        }

        .card__type {
            font-family: var(--font-mono);
            font-size: 9px;
            letter-spacing: 0.2em;
            color: var(--desc);
            text-transform: uppercase;
            white-space: nowrap;
        }

        .card__body {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin: auto 0;
        }

        .card__title {
            font-family: var(--font-cn);
            font-weight: 400;
            font-size: clamp(26px, 2.9vw, 38px);
            line-height: 1.05;
            letter-spacing: 0.03em;
            text-wrap: balance;
            transition: transform 0.2s steps(2);
        }

        .card__title-sub {
            display: block;
        }

        .card__en {
            font-family: var(--font-en);
            font-size: 8.5px;
            line-height: 1.6;
            letter-spacing: 0.02em;
            color: var(--accent);
            text-transform: uppercase;
        }

        .card__desc {
            margin-top: 6px;
            font-size: 13px;
            line-height: 1.75;
            color: var(--desc);
            max-width: 32ch;
            text-wrap: pretty;
        }

        .card__foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 16px;
            border-top: 2px dashed var(--dash);
        }

        .card__cta {
            font-family: var(--font-cn);
            font-size: 12px;
            letter-spacing: 0.04em;
            color: var(--dim);
            transition: color 0.2s steps(2);
        }

        .card:hover .card__cta {
            color: var(--paper);
        }

        .card__arrow {
            display: grid;
            place-items: center;
            width: 36px;
            height: 36px;
            border: 2px solid var(--line);
            border-radius: 0;
            transform: none;
            transition: background 0.2s steps(2), color 0.2s steps(2), border-color 0.2s steps(2);
            flex: none;
        }

        .card__arrow svg {
            width: 14px;
            height: 14px;
        }

        /* 未开放卡片 */
        .card.disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }
        .card.disabled:hover {
            translate: 0;
            box-shadow: var(--shadow-block);
            border-color: var(--card-line);
        }
        .card.disabled::after {
            display: none;
        }
        .card.disabled:hover .card__idx { color: var(--idx); transform: none; }
        .card.disabled:hover .card__arrow { background: transparent; color: var(--dim); }
        .card.disabled:hover .card__title { transform: none; }
        .card.disabled:hover .card__cta { color: var(--dim); }

/* ---------- 页脚 ---------- */
        .footer {
            position: relative;
            z-index: 10;
            padding: clamp(34px, 5vw, 60px) var(--pad) 26px;
            background: var(--ink);
            border-top: 2px solid var(--line);
            overflow: hidden;
        }

        .footer__big {
            font-family: var(--font-en);
            font-size: clamp(24px, 6.4vw, 88px);
            line-height: 1;
            letter-spacing: 0.02em;
            color: transparent;
            -webkit-text-stroke: 2px var(--stroke);
            white-space: nowrap;
            margin-bottom: clamp(26px, 4vw, 44px);
            transition: -webkit-text-stroke-color 0.3s steps(2);
        }

        .footer:hover .footer__big {
            -webkit-text-stroke-color: color-mix(in srgb, var(--pink) 45%, transparent);
        }

        .footer__row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            font-family: var(--font-mono);
            font-size: 9px;
            letter-spacing: 0.16em;
            color: var(--dim);
            text-transform: uppercase;
        }

        .footer__row a {
            color: var(--paper);
            text-decoration: none;
            border-bottom: 1px solid var(--line);
            padding-bottom: 2px;
            transition: color 0.3s, border-color 0.3s;
        }

        .footer__row a:hover {
            color: var(--pink);
            border-color: var(--pink);
        }

        .footer__icp {
            white-space: nowrap;
        }

/* ---------- 提示条 ---------- */
        .toast {
            position: fixed;
            left: 50%;
            top: clamp(120px, 15vh, 148px);
            z-index: 130;
            transform: translate(-50%, -14px);
            padding: 10px 18px;
            background: var(--paper);
            color: var(--ink);
            border: 2px solid var(--ink);
            border-radius: 0;
            box-shadow: 4px 4px 0 color-mix(in srgb, var(--ink) 35%, transparent);
            font-family: var(--font-cn);
            font-size: 12px;
            letter-spacing: 0.04em;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.15s steps(2), transform 0.15s steps(2);
        }

        .toast.is-on {
            opacity: 1;
            transform: translate(-50%, 0);
        }