:root {
            --ink: #172033;
            --muted: #5d6b80;
            --line: #e4eaf2;
            --blue: #1554d6;
            --blue-d: #0e3fa8;
            --paper: #f4f7fb;
            --card: #ffffff;
            --green: #0c7a4b;
            --shadow: 0 18px 50px rgba(18, 42, 84, 0.1);
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; scroll-padding-top: 80px; }
        body {
            margin: 0;
            color: var(--ink);
            background: #fff;
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.65;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--blue); }
        button, a { -webkit-tap-highlight-color: transparent; }
        :focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
        .wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

        .topbar {
            background: #e7f0ff;
            color: #1e4a96;
            font-size: 13px;
            text-align: center;
            padding: 9px 16px;
            border-bottom: 1px solid #d3e2f8;
        }
        .topbar strong { color: #123f86; font-weight: 650; }

        .header {
            position: sticky;
            top: 0;
            z-index: 30;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: saturate(1.2) blur(12px);
            border-bottom: 1px solid rgba(20, 40, 70, 0.06);
        }
        .header-inner {
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
        .brand img { width: 36px; height: 36px; }
        .brand strong { display: block; font-size: 16px; line-height: 1.2; }
        .brand small { display: block; color: var(--muted); font-size: 12px; line-height: 1.3; }
        .header-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            height: 40px;
            padding: 0 18px;
            border-radius: 999px;
            background: var(--blue);
            color: #fff;
            text-decoration: none;
            font-weight: 650;
            font-size: 14px;
            transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
        }
        .header-button svg { width: 16px; height: 16px; }
        .header-button:hover { background: var(--blue-d); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(21, 84, 214, 0.28); }
        .header.is-stuck { box-shadow: 0 10px 28px rgba(18, 42, 84, 0.08); }

        .hero {
            background:
                radial-gradient(680px 320px at 88% 0%, rgba(21, 84, 214, 0.12), transparent 70%),
                linear-gradient(180deg, #f7f9fc 0%, #fff 78%);
            padding: 54px 0 28px;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
            gap: 48px;
            align-items: center;
        }
        .kicker {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .kicker span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            letter-spacing: 0.02em;
            color: #1d4e9b;
            background: #e8f0ff;
            border-radius: 999px;
            padding: 4px 10px;
        }
        .kicker svg { width: 14px; height: 14px; }
        h1 {
            margin: 0 0 14px;
            font-size: 48px;
            line-height: 1.18;
            letter-spacing: -0.03em;
            font-weight: 750;
        }
        h1 span { color: var(--blue); }
        .lead { margin: 0 0 18px; color: var(--muted); font-size: 17px; max-width: 540px; }
        .checks { list-style: none; margin: 0 0 22px; padding: 0; }
        .checks li { display: flex; gap: 8px; align-items: flex-start; margin: 7px 0; }
        .checks svg { flex: none; margin-top: 3px; }

        .download-btn-group { display: flex; flex-wrap: wrap; gap: 12px; }
        .cta-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-width: 196px;
            height: 52px;
            padding: 0 18px;
            border-radius: 12px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 700;
            border: 1px solid transparent;
            transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
        }
        .cta-button svg { width: 18px; height: 18px; }
        .cta-button svg:not([stroke]) { fill: currentColor; }
        .cta-button svg[stroke] { fill: none; stroke: currentColor; }
        .cta-button.primary {
            position: relative;
            overflow: hidden;
            background: var(--blue);
            color: #fff;
            box-shadow: 0 10px 24px rgba(21, 84, 214, 0.28);
        }
        .hero .cta-button.primary { animation: cta-pulse 2.6s ease-in-out infinite; }
        .cta-button.primary::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, transparent 32%, rgba(255, 255, 255, 0.32) 50%, transparent 68%);
            transform: translateX(-130%);
            pointer-events: none;
        }
        .cta-button.primary:hover { background: var(--blue-d); transform: translateY(-2px); animation: none; }
        .cta-button.primary:hover::after { transform: translateX(130%); transition: transform 0.55s ease; }
        .cta-button.secondary {
            background: #fff;
            color: var(--ink);
            border-color: #d5deea;
        }
        .cta-button.secondary:hover { border-color: #9eb6de; background: #f8fbff; transform: translateY(-2px); box-shadow: 0 8px 18px rgba(18, 42, 84, 0.08); }
        .fine {
            margin: 14px 0 0;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.7;
        }
        .fine.center { text-align: center; margin-top: 16px; }
        .fine a { font-weight: 650; }

        .shot {
            position: relative;
            background: #fff;
            border: 1px solid #e6edf5;
            border-radius: 18px;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: transform 0.35s ease, box-shadow 0.35s ease;
        }
        .shot:hover { transform: translateY(-4px); box-shadow: 0 24px 50px rgba(18, 42, 84, 0.14); }
        .float-chip {
            position: absolute;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--ink);
            border-radius: 999px;
            padding: 7px 11px;
            font-size: 12px;
            font-weight: 700;
            box-shadow: 0 10px 24px rgba(18, 42, 84, 0.14);
            animation: floaty 4.2s ease-in-out infinite;
        }
        .float-chip svg { width: 14px; height: 14px; color: var(--blue); }
        .chip-a { left: 16px; bottom: 18px; }
        .chip-b { right: 16px; top: 54px; animation-delay: -1.4s; }
        .shot-top {
            height: 38px;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0 14px;
            background: #f3f6fb;
            color: #8b98ab;
            font-size: 12px;
        }
        .shot-top i { width: 8px; height: 8px; border-radius: 50%; display: block; background: #d5deea; }
        .shot-top i:first-child { background: #ffb4a8; }
        .shot-top i:nth-child(2) { background: #ffe08a; }
        .shot-top i:nth-child(3) { background: #b7ebc9; }
        .shot-top span { margin-left: 8px; }
        .shot img { width: 100%; height: auto; }

        .metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
            margin: 34px auto 0;
        }
        .metrics article {
            display: flex;
            align-items: center;
            gap: 14px;
            min-height: 88px;
            padding: 16px 18px;
            background: #fff;
            border: 1px solid #e5edf6;
            border-radius: 18px;
            box-shadow: 0 12px 30px rgba(18, 42, 84, 0.06);
            transition: transform 0.22s ease, box-shadow 0.22s ease;
        }
        .metrics article:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(18, 42, 84, 0.11); }
        .metric-ico {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: grid;
            place-items: center;
            flex: none;
        }
        .metric-ico svg { width: 22px; height: 22px; }
        .metric-ico.users { background: #e8f0ff; color: #1554d6; }
        .metric-ico.files { background: #eef0ff; color: #3b4cc0; }
        .metric-ico.safe { background: #e7f7ef; color: #0c7a4b; }
        .metric-ico.service { background: #fff3e8; color: #c2410c; }
        .metrics strong { display: block; font-size: 24px; letter-spacing: -0.03em; line-height: 1.15; }
        .metrics article > div span { display: block; margin-top: 2px; color: var(--muted); font-size: 13px; line-height: 1.35; }

        section { padding: 72px 0; }
        .section-head { text-align: center; margin-bottom: 32px; }
        .section-head h2 { margin: 0 0 8px; font-size: 32px; letter-spacing: -0.03em; }
        .section-head p { margin: 0; color: var(--muted); }

        .uses { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: stretch; }
        .uses article {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: #fff;
            border: 1px solid #e6edf5;
            border-radius: 16px;
            padding: 22px 20px 20px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .uses article:hover { border-color: #c5d6ef; box-shadow: 0 8px 24px rgba(18, 42, 84, 0.06); }
        .uses article.evidence {
            background: linear-gradient(180deg, #dce9ff 0%, #f3f7ff 100%);
            border-color: #8eb4ef;
        }
        .uses article.evidence:hover { border-color: #6f9ae0; }
        .uses article.evidence .use-ico { background: #fff; }
        .uses .tag {
            display: inline-flex;
            align-self: flex-start;
            margin-top: 14px;
            padding: 3px 8px;
            border-radius: 999px;
            background: #fff;
            color: #1554d6;
            font-size: 12px;
            font-weight: 700;
        }
        .use-ico {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: grid;
            place-items: center;
            margin-bottom: 16px;
            background: #eef3fb;
            color: var(--blue);
        }
        .use-ico svg { width: 18px; height: 18px; }
        .uses h3 { margin: 0 0 8px; font-size: 17px; font-weight: 650; }
        .uses p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

        .band-tight { background: var(--paper); }
        .features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
        .features article {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 22px 20px 20px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .features article:hover { transform: translateY(-5px); border-color: #c9d8f5; box-shadow: var(--shadow); }
        .ico {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: grid;
            place-items: center;
            background: #eaf1ff;
            color: var(--blue);
            margin-bottom: 14px;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
        }
        .features article:hover .ico { transform: rotate(-6deg) scale(1.06); background: var(--blue); color: #fff; }
        .features h3 { margin: 0 0 6px; font-size: 18px; }
        .features p { margin: 0; color: var(--muted); font-size: 14px; }

        .compare {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .compare article { border-radius: 16px; padding: 24px 24px 10px; transition: transform 0.25s ease, box-shadow 0.25s ease; }
        .compare article:hover { transform: translateY(-4px); }
        .compare .now:hover { box-shadow: 0 16px 34px rgba(21, 84, 214, 0.12); }
        .compare h3 { margin: 0 0 8px; font-size: 20px; display: flex; align-items: center; gap: 8px; }
        .compare h3 svg { width: 20px; height: 20px; flex: none; }
        .compare ul { margin: 0; padding: 0 0 8px; list-style: none; }
        .compare li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-top: 1px solid #e6edf5; }
        .compare li::before {
            content: "";
            width: 18px;
            height: 18px;
            margin-top: 3px;
            flex: none;
            border-radius: 50%;
            background: #eef1f5 center / 12px no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3 3l6 6M9 3L3 9' stroke='%238190a3' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
        }
        .compare .now li { border-top-color: rgba(21, 84, 214, 0.12); }
        .compare .now li::before {
            background-color: #fff;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 6.2 4.8 8.5 9.5 3.5' fill='none' stroke='%231554d6' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
        }
        .compare .old { background: #eef1f6; color: #4a596c; border: 1px solid #d5dde8; }
        .compare .now { background: linear-gradient(180deg, #d7e6ff 0%, #e7f1ff 100%); color: var(--ink); border: 1px solid #8eb4ef; }
        .compare .now h3 svg { color: var(--blue); }
        .compare .now h3 span {
            display: inline-block;
            margin-left: 8px;
            font-size: 12px;
            font-weight: 650;
            color: #1554d6;
            background: #fff;
            border-radius: 999px;
            padding: 2px 8px;
            vertical-align: 2px;
        }

        .steps {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 28px;
            align-items: center;
        }
        .step-list { display: flex; flex-direction: column; gap: 10px; }
        .step {
            width: 100%;
            text-align: left;
            font: inherit;
            color: inherit;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 14px 16px;
            cursor: pointer;
        }
        .step { transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease; }
        .step.is-on, .step:hover { border-color: #b9cff8; background: #f5f8ff; transform: translateX(4px); box-shadow: 0 8px 20px rgba(21, 84, 214, 0.08); }
        .step.is-on b { transform: scale(1.05); }
        .step b {
            display: inline-grid;
            place-items: center;
            width: 26px;
            height: 26px;
            margin-right: 8px;
            border-radius: 50%;
            background: var(--blue);
            color: #fff;
            font-size: 13px;
        }
        .step p { margin: 6px 0 0 34px; color: var(--muted); font-size: 14px; }
        .stage {
            position: relative;
            aspect-ratio: 4 / 3;
            border-radius: 16px;
            overflow: hidden;
            background: #e9eef5;
            box-shadow: var(--shadow);
        }
        .step-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity 0.35s ease;
        }
        .step-image.active { opacity: 1; }

        .formats { display: grid; grid-template-columns: 1.2fr repeat(3, 1fr); gap: 14px; align-items: stretch; }
        .formats article {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: #fff;
            border: 1px solid #e6edf5;
            border-radius: 16px;
            padding: 20px 18px 18px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .formats article:hover { border-color: #c5d6ef; box-shadow: 0 8px 24px rgba(18, 42, 84, 0.06); }
        .formats article.html {
            background: linear-gradient(180deg, #dce9ff 0%, #f3f7ff 100%);
            border-color: #8eb4ef;
        }
        .fmt-mark {
            display: inline-flex;
            align-self: flex-start;
            margin-bottom: 14px;
            padding: 4px 8px;
            border-radius: 8px;
            background: #eef3fb;
            color: var(--blue);
            font-size: 12px;
            font-weight: 750;
            letter-spacing: 0.04em;
        }
        .formats article.html .fmt-mark { background: #fff; }
        .formats h3 { margin: 0 0 8px; font-size: 22px; letter-spacing: -0.03em; }
        .formats p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
        .formats .play {
            display: inline-flex;
            align-self: flex-start;
            margin-top: auto;
            padding: 3px 8px;
            border-radius: 999px;
            background: #fff;
            color: #1554d6;
            font-size: 12px;
            font-weight: 700;
        }
        .section-end { padding-top: 0; }

        .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
        .reviews figure {
            display: flex;
            flex-direction: column;
            height: 100%;
            margin: 0;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 20px 18px 16px;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .reviews figure:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
        .reviews blockquote { flex: 1; margin: 0 0 16px; font-size: 15px; }
        .reviews blockquote::before { content: "“"; display: block; font-size: 32px; line-height: 1; color: #b9cff8; font-family: Georgia, serif; }
        .reviews figcaption { display: flex; align-items: center; gap: 10px; margin-top: auto; color: var(--muted); font-size: 13px; }
        .reviews figcaption strong { color: var(--ink); display: block; font-size: 14px; }
        .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
            flex: none;
            background: #e8f0ff;
        }

        .faq { width: min(760px, 100%); margin: 0 auto; }
        .faq details { border-bottom: 1px solid var(--line); }
        .faq summary {
            cursor: pointer;
            padding: 16px 8px;
            font-weight: 680;
            list-style: none;
            display: flex;
            justify-content: space-between;
            gap: 16px;
        }
        .faq summary::-webkit-details-marker { display: none; }
        .faq summary:after {
            content: "";
            width: 18px;
            height: 18px;
            margin-top: 3px;
            flex: none;
            background: center / 18px no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%235d6b80' stroke-width='1.8' stroke-linecap='round' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            transition: transform 0.22s ease;
        }
        .faq details[open] summary:after { transform: rotate(180deg); }
        .faq details p { margin: 0; padding: 0 8px 16px; color: var(--muted); }
        .faq summary { transition: color 0.2s ease; }
        .faq summary:hover { color: var(--blue); }
        .more-help { text-align: center; margin: 22px 0 0; }

        .closing {
            background: linear-gradient(180deg, #f7faff 0%, #eaf2ff 100%);
            color: var(--ink);
            text-align: center;
            border: 1px solid #d5e3f8;
            border-radius: 20px;
            padding: 48px 24px;
            box-shadow: 0 16px 40px rgba(21, 84, 214, 0.08);
        }
        .closing h2 { margin: 0 0 8px; font-size: 32px; letter-spacing: -0.03em; }
        .closing p { margin: 0 0 20px; color: var(--muted); }

        .footer { padding: 28px 0 40px; color: var(--muted); font-size: 13px; text-align: center; }
        .footer-cs { display: none; margin-bottom: 16px; }
        .footer-cs img { width: 120px; height: 120px; margin: 0 auto 6px; }
        .footer-cs p { margin: 0; }
        .footer nav { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 8px; }
        .friend-links { margin-bottom: 6px; }
        .friend-links span { color: var(--muted); }
        .footer a { color: var(--muted); text-decoration: none; }
        .footer a:hover { color: var(--blue); }

        .float-stack {
            position: fixed;
            right: 18px;
            bottom: 18px;
            z-index: 40;
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: flex-end;
        }
        .float-btn {
            position: relative;
            width: 52px;
            height: 52px;
            border: 0;
            border-radius: 50%;
            background: var(--blue);
            color: #fff;
            display: grid;
            place-items: center;
            text-decoration: none;
            box-shadow: 0 8px 20px rgba(21, 84, 214, 0.28);
            cursor: pointer;
            font-size: 12px;
            font-weight: 700;
        }
        .float-btn svg { width: 20px; height: 20px; }
        .float-btn { transition: transform 0.2s ease, background 0.2s ease; }
        .float-btn:hover { transform: translateY(-2px) scale(1.05); }
        .float-btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); box-shadow: 0 8px 20px rgba(18, 42, 84, 0.08); }
        .float-btn::before {
            content: attr(data-tip);
            position: absolute;
            right: 62px;
            top: 50%;
            transform: translateY(-50%);
            background: #172033;
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
            border-radius: 8px;
            padding: 5px 8px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.15s ease;
        }
        .float-btn:hover::before { opacity: 1; }
        .back-to-top { display: none; }
        .back-to-top.show { display: grid; }
        .cs-panel {
            width: 196px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 12px;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .cs-panel img { width: 160px; height: 160px; margin: 0 auto 8px; }
        .cs-panel p { margin: 0; font-size: 12px; color: var(--muted); }
        .cs-panel[hidden] { display: none; }
        .reveal { opacity: 0; transform: translateY(18px); }
        .reveal.in { animation: rise 0.6s ease forwards; }
        @keyframes rise {
            from { opacity: 0; transform: translateY(18px); }
            to { opacity: 1; transform: none; }
        }
        @keyframes floaty {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-7px); }
        }
        @keyframes cta-pulse {
            0%, 100% { box-shadow: 0 10px 24px rgba(21, 84, 214, 0.28); }
            50% { box-shadow: 0 12px 28px rgba(21, 84, 214, 0.42); }
        }

        @media (max-width: 900px) {
            h1 { font-size: 34px; }
            .hero { padding-top: 28px; }
            .hero-grid, .features, .compare, .steps, .reviews, .uses {
                grid-template-columns: 1fr;
            }
            .metrics { grid-template-columns: 1fr 1fr; }
            .metrics article { flex-direction: column; align-items: flex-start; min-height: 118px; padding: 14px 14px 12px; gap: 10px; }
            .metric-ico { width: 42px; height: 42px; border-radius: 12px; }
            .metrics strong { font-size: 20px; }
            .brand small { display: none; }
            section { padding: 48px 0; }
            .section-head h2, .closing h2 { font-size: 26px; }
            .formats { grid-template-columns: 1fr; }
            .float-chip { display: none; }
            .cta-button { width: 100%; }
            .float-stack { display: none; }
            .footer-cs { display: block; }
            .topbar { font-size: 12px; line-height: 1.5; }
        }
        @media (prefers-reduced-motion: reduce) {
            html { scroll-behavior: auto; }
            .cta-button, .float-chip, .reveal { animation: none; }
            .reveal { opacity: 1; transform: none; }
            .shot, .uses article, .features article, .formats article, .reviews figure, .compare article, .step, .float-btn { transition: none; }
        }

.page-main { background: var(--paper); padding: 36px 0 72px; }
.page-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 28px 32px 32px;
}
.page-card h1 { font-size: 32px; line-height: 1.3; letter-spacing: -0.03em; }
.crumb { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; color: var(--muted); font-size: 13px; }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--blue); }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.article-meta a { color: var(--blue); text-decoration: none; }
.tag-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 14px 0 0; }
.tag-row > span { color: var(--muted); font-size: 13px; }
.page-main h1 { margin: 0 0 12px; font-size: 28px; letter-spacing: -0.03em; }
.other-tags {
    margin-top: 36px;
    padding: 18px 18px 16px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
}
.other-tags-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.other-tags h2 { margin: 0; font-size: 16px; letter-spacing: 0; }
.other-tags-head a { font-size: 13px; text-decoration: none; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
    text-decoration: none;
    background: #e8f0ff;
    color: var(--blue);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.4;
}
.tag-cloud a:hover { background: var(--blue); color: #fff; }
.tag-cloud-compact { gap: 6px; }
.tag-cloud-compact a {
    padding: 3px 8px;
    font-size: 12px;
    background: #f4f7fb;
    color: #1e4a96;
}
.tag-index {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 28px 24px 22px;
}
.tag-index .section-head { margin-bottom: 18px; }
.tag-index .section-head p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.tag-index-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-index-list a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 5px 6px 5px 12px;
    border: 1px solid #e6edf5;
    border-radius: 999px;
    background: #f7f9fc;
    color: var(--ink);
    text-decoration: none;
    font-size: 13px;
    line-height: 1.4;
}
.tag-index-list a:hover { border-color: #9eb6de; background: #e8f0ff; color: var(--blue); }
.tag-index-list em {
    font-style: normal;
    font-size: 11px;
    color: var(--muted);
    background: #fff;
    border-radius: 999px;
    padding: 1px 6px;
    min-width: 16px;
    text-align: center;
}
.tag-index .pager { margin-top: 22px; }
.tag-row a {
    text-decoration: none;
    background: #e8f0ff;
    color: var(--blue);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 13px;
    font-weight: 650;
}
.article-body { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 16px; line-height: 1.85; color: var(--ink); }
.article-body h2 { margin: 28px 0 10px; font-size: 22px; line-height: 1.4; letter-spacing: -0.02em; }
.article-body h3 { margin: 22px 0 8px; font-size: 18px; line-height: 1.45; }
.article-body p { margin: 0 0 14px; }
.article-body ul, .article-body ol { margin: 0 0 16px; padding-left: 1.3em; }
.article-body li { margin: 4px 0; }
.article-body img { max-width: 100%; height: auto; border-radius: 8px; }
.article-body a { text-decoration: underline; text-underline-offset: 2px; }
.article-body blockquote { margin: 0 0 16px; padding: 10px 14px; border-left: 3px solid #b9cff8; background: #f5f8ff; color: var(--muted); }
.neighbors { display: flex; flex-direction: column; gap: 8px; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.neighbors a { text-decoration: none; }
.related { margin-top: 28px; padding-top: 8px; }
.related h2 { margin: 0 0 14px; font-size: 20px; letter-spacing: -0.02em; }
.related-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; list-style: none; margin: 0; padding: 0; }
.related-list a {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f7f9fc;
    color: inherit;
    text-decoration: none;
}
.related-list a:hover { border-color: #9eb6de; background: #fff; }
.related-list span { font-size: 15px; line-height: 1.45; }
.related-list time { color: var(--muted); font-size: 12px; }
@media (max-width: 640px) {
    .related-list { grid-template-columns: 1fr; }
}
.post-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.post-item {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px 18px 16px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.post-item:hover { transform: translateY(-4px); border-color: #c5d6ef; box-shadow: var(--shadow); color: inherit; }
.post-cate {
    align-self: flex-start;
    margin: 0 0 12px;
    padding: 3px 8px;
    border-radius: 999px;
    background: #e8f0ff;
    color: var(--blue);
    font-size: 12px;
    font-weight: 650;
    line-height: 1.4;
}
.post-item h3 {
    margin: 0 0 8px;
    font-size: 16px;
    line-height: 1.45;
    letter-spacing: -0.02em;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    min-height: 2.9em;
}
.post-item .excerpt {
    margin: 0 0 14px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    min-height: 3.3em;
}
.post-date { margin-top: auto; color: var(--muted); font-size: 12px; }
.pager { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 28px; flex-wrap: wrap; }
.pager > a,
.pager > .now-page {
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: #fff;
    text-decoration: none;
    color: var(--ink);
    font-size: 14px;
    line-height: 1;
}
.pager > a:hover { border-color: #9eb6de; color: var(--blue); }
.pager > .now-page { background: var(--blue); color: #fff; border-color: var(--blue); }
#articles {
    background: #f4f7fb;
    padding-bottom: 56px;
}
#articles + .section-end {
    background: #fff;
    padding-top: 56px;
}
#articles + .section-end .closing {
    background: linear-gradient(180deg, #f7faff 0%, #eaf2ff 100%);
}
@media (max-width: 900px) {
    .post-list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .post-list { grid-template-columns: 1fr; }
    .page-card { padding: 22px 18px; }
    .page-card h1 { font-size: 28px; }
}