/* ==========================================================================
   HowToGo | 问道 — 官网样式
   蓝色主题 · 圆润 · 丝滑
   ========================================================================== */

:root {
    --blue-50: #f0f7ff;
    --blue-100: #dceaff;
    --blue-200: #bed9ff;
    --blue-300: #93c2fd;
    --blue-400: #5fa4fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    --blue-900: #1b357f;

    --ink: #0e1a33;
    --body: #38507a;
    --muted: #6f86ab;

    --bg: #f4f8ff;
    --bg-soft: #eaf2ff;
    --card: #ffffff;
    --line: #e0eafc;
    --line-strong: #c9dcf8;

    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --radius-pill: 999px;

    --shadow-xs: 0 1px 2px rgba(27, 53, 127, .06);
    --shadow-sm: 0 4px 14px -6px rgba(27, 53, 127, .14);
    --shadow: 0 14px 34px -16px rgba(27, 53, 127, .22);
    --shadow-lg: 0 30px 70px -30px rgba(27, 53, 127, .32);

    --ease: cubic-bezier(.22, .61, .36, 1);
    --ease-soft: cubic-bezier(.4, 0, .2, 1);
    --header-h: 66px;
    --wrap: 1140px;

    --font: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
    --mono: "JetBrains Mono", "Cascadia Mono", Consolas, "Courier New", monospace;
}

[data-theme="dark"] {
    --blue-50: #101c33;
    --blue-100: #142544;
    --blue-200: #1c3560;
    --blue-300: #2a4c85;
    --blue-400: #4c85e6;
    --blue-500: #6aa4ff;
    --blue-600: #8bbcff;
    --blue-700: #a9ceff;
    --blue-800: #cbe1ff;
    --blue-900: #e6f0ff;

    --ink: #eaf1ff;
    --body: #b3c4e0;
    --muted: #8a9cbb;

    --bg: #0a1120;
    --bg-soft: #0e1729;
    --card: #111c31;
    --line: #1e2c48;
    --line-strong: #2b3d61;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-sm: 0 4px 14px -6px rgba(0, 0, 0, .5);
    --shadow: 0 14px 34px -16px rgba(0, 0, 0, .6);
    --shadow-lg: 0 30px 70px -30px rgba(0, 0, 0, .75);
}

/* --------------------------------------------------------------- base ---- */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 18px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.75;
    color: var(--body);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    transition: background-color .4s var(--ease-soft), color .4s var(--ease-soft);
}

h1,
h2,
h3,
h4 {
    color: var(--ink);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -.01em;
    margin: 0 0 .5em;
}

h1 {
    font-size: clamp(2rem, 4.6vw, 3.1rem);
    letter-spacing: -.025em;
}

h2 {
    font-size: clamp(1.45rem, 2.6vw, 1.95rem);
    margin-top: 2.4em;
}

h3 {
    font-size: 1.14rem;
    margin-top: 1.9em;
}

p {
    margin: 0 0 1.1em;
}

a {
    color: var(--blue-600);
    text-decoration: none;
    transition: color .2s var(--ease);
}

a:hover {
    color: var(--blue-700);
}

img,
svg {
    max-width: 100%;
    display: block;
}

code {
    font-family: var(--mono);
    font-size: .87em;
    background: var(--blue-50);
    color: var(--blue-700);
    padding: .16em .46em;
    border-radius: 7px;
    border: 1px solid var(--line);
}

pre {
    position: relative;
    background: var(--blue-900);
    color: #e8f0ff;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 13.5px;
    line-height: 1.7;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] pre {
    background: #060d1a;
    border: 1px solid var(--line);
}

pre code {
    background: none;
    border: 0;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

pre .copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    font-family: inherit;
    font-size: .76rem;
    font-weight: 600;
    color: #dce9ff;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: var(--radius-pill);
    padding: 4px 12px;
    cursor: pointer;
    transition: background-color .25s var(--ease), transform .25s var(--ease);
}

pre .copy-btn:hover {
    background: rgba(255, 255, 255, .22);
    transform: translateY(-1px);
}

hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 3rem 0;
}

::selection {
    background: var(--blue-200);
    color: var(--blue-900);
}

:focus-visible {
    outline: 2px solid var(--blue-500);
    outline-offset: 3px;
    border-radius: 6px;
}

/* ------------------------------------------------------------ layout ---- */

.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 22px;
}

.wrap-narrow {
    max-width: 860px;
}

.section {
    padding: 74px 0;
}

.section-soft {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 45%, var(--bg) 100%);
}

.section-head {
    max-width: 700px;
    margin: 0 auto 42px;
    text-align: center;
}

.section-head p {
    color: var(--muted);
    font-size: 1.02rem;
    margin: 0;
}

.eyebrow {
    display: inline-block;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--blue-600);
    background: var(--blue-100);
    padding: 5px 13px;
    border-radius: var(--radius-pill);
    margin-bottom: 16px;
}

.grid {
    display: grid;
    gap: 20px;
}

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

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

/* ------------------------------------------------------------ header ---- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    height: var(--header-h);
    display: flex;
    align-items: center;
    background: color-mix(in srgb, var(--card) 82%, transparent);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s var(--ease-soft), box-shadow .3s var(--ease-soft), background-color .4s var(--ease-soft);
}

.site-header.is-scrolled {
    border-bottom-color: var(--line);
    box-shadow: 0 6px 24px -18px rgba(27, 53, 127, .5);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 11px;
    font-weight: 800;
    color: var(--ink);
    font-size: 1.06rem;
    letter-spacing: -.01em;
    white-space: nowrap;
}

.brand:hover {
    color: var(--ink);
}

/* 站点标志用的是模组自己的物品图标（32×32 像素画），所以按 1:1 显示并关掉插值，
   让它保持方块的锐利感，而不是被拉成一张模糊的小图。 */
.brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    display: block;
    box-shadow: var(--shadow-sm);
    image-rendering: pixelated;
    transition: transform .35s var(--ease);
}

.brand:hover .brand-mark {
    transform: rotate(-6deg) scale(1.06);
}

.brand small {
    display: block;
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .16em;
    color: var(--muted);
    text-transform: uppercase;
    line-height: 1;
    margin-top: 3px;
}

.nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav a {
    position: relative;
    padding: 9px 14px;
    border-radius: var(--radius-pill);
    color: var(--body);
    font-size: .94rem;
    font-weight: 600;
    transition: color .2s var(--ease), background-color .25s var(--ease);
}

.nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--blue-500);
    transform: translateX(-50%);
    transition: width .28s var(--ease);
}

.nav a:hover {
    color: var(--blue-700);
    background: var(--blue-50);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
    width: 18px;
}

.nav a[aria-current="page"] {
    color: var(--blue-700);
    background: var(--blue-100);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    background: var(--card);
    color: var(--body);
    border-radius: 12px;
    cursor: pointer;
    transition: transform .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease), background-color .3s var(--ease);
}

.icon-btn:hover {
    transform: translateY(-2px);
    border-color: var(--blue-300);
    color: var(--blue-600);
}

.icon-btn svg {
    width: 18px;
    height: 18px;
}

.nav-toggle {
    display: none;
}

/* ----------------------------------------------------------- buttons ---- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 12px 22px;
    border-radius: var(--radius-pill);
    font-size: .96rem;
    font-weight: 700;
    font-family: inherit;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .28s var(--ease), box-shadow .28s var(--ease), background-color .28s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn svg {
    width: 17px;
    height: 17px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
    color: #fff;
    box-shadow: 0 12px 26px -12px rgba(37, 99, 235, .75);
}

.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 18px 34px -14px rgba(37, 99, 235, .85);
}

.btn-ghost {
    background: var(--card);
    border-color: var(--line-strong);
    color: var(--ink);
}

.btn-ghost:hover {
    color: var(--blue-700);
    border-color: var(--blue-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* -------------------------------------------------------------- hero ---- */

.hero {
    position: relative;
    padding: 78px 0 84px;
    overflow: hidden;
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: .5;
    pointer-events: none;
    z-index: 0;
}

.hero::before {
    width: 520px;
    height: 520px;
    top: -190px;
    right: -120px;
    background: radial-gradient(circle, var(--blue-300), transparent 70%);
    animation: float-a 18s var(--ease-soft) infinite alternate;
}

.hero::after {
    width: 420px;
    height: 420px;
    bottom: -180px;
    left: -140px;
    background: radial-gradient(circle, var(--blue-200), transparent 70%);
    animation: float-b 22s var(--ease-soft) infinite alternate;
}

@keyframes float-a {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(-40px, 34px, 0) scale(1.08); }
}

@keyframes float-b {
    from { transform: translate3d(0, 0, 0) scale(1.04); }
    to { transform: translate3d(46px, -28px, 0) scale(1); }
}

.hero .wrap {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.03fr) minmax(0, .97fr);
    gap: 54px;
    align-items: center;
}

.hero h1 span {
    background: linear-gradient(120deg, var(--blue-500), var(--blue-700) 55%, var(--blue-400));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-lead {
    font-size: 1.09rem;
    color: var(--body);
    max-width: 34em;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 22px 0 26px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: .82rem;
    font-weight: 600;
    color: var(--blue-700);
    background: var(--card);
    border: 1px solid var(--line);
    padding: 6px 13px;
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-xs);
    transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.chip:hover {
    transform: translateY(-2px);
    border-color: var(--blue-300);
}

.chip .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--blue-500);
    box-shadow: 0 0 0 3px var(--blue-100);
}

/* 地图示意（纯 CSS/SVG，不用截图） */

.map-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 14px;
    box-shadow: var(--shadow-lg);
    transition: transform .5s var(--ease);
}

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

.map-canvas {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background:
        linear-gradient(0deg, rgba(59, 130, 246, .06) 1px, transparent 1px) 0 0 / 34px 34px,
        linear-gradient(90deg, rgba(59, 130, 246, .06) 1px, transparent 1px) 0 0 / 34px 34px,
        linear-gradient(150deg, var(--blue-50), var(--bg-soft));
    border: 1px solid var(--line);
}

.map-canvas svg {
    width: 100%;
    height: auto;
}

.map-hud {
    position: absolute;
    left: 14px;
    bottom: 14px;
    right: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: color-mix(in srgb, var(--card) 88%, transparent);
    backdrop-filter: blur(10px);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    box-shadow: var(--shadow-sm);
}

.map-hud .arrow {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
    color: #fff;
    flex: none;
}

.map-hud .arrow svg {
    width: 19px;
    height: 19px;
}

.map-hud .txt {
    min-width: 0;
}

.map-hud .txt strong {
    display: block;
    color: var(--ink);
    font-size: .95rem;
    line-height: 1.35;
}

.map-hud .txt span {
    font-size: .8rem;
    color: var(--muted);
}

.map-hud .bar {
    margin-left: auto;
    width: 92px;
    height: 6px;
    border-radius: 99px;
    background: var(--blue-100);
    overflow: hidden;
    flex: none;
}

.map-hud .bar i {
    display: block;
    height: 100%;
    width: 62%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--blue-400), var(--blue-600));
    animation: bar-grow 3.6s var(--ease-soft) infinite alternate;
}

@keyframes bar-grow {
    from { width: 34%; }
    to { width: 78%; }
}

.map-panel {
    position: absolute;
    top: 14px;
    left: 14px;
    width: 132px;
    background: color-mix(in srgb, var(--card) 92%, transparent);
    backdrop-filter: blur(10px);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 9px 10px;
    box-shadow: var(--shadow-sm);
    font-size: .74rem;
}

.map-panel b {
    display: block;
    color: var(--ink);
    font-size: .76rem;
    margin-bottom: 6px;
}

.map-panel .row {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    padding: 2.5px 0;
}

.map-panel .sw {
    width: 22px;
    height: 12px;
    border-radius: 99px;
    background: var(--blue-500);
    position: relative;
    flex: none;
}

.map-panel .sw::after {
    content: "";
    position: absolute;
    top: 2px;
    right: 2px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fff;
}

.map-panel .sw.off {
    background: var(--line-strong);
}

.map-panel .sw.off::after {
    right: auto;
    left: 2px;
}

/* ------------------------------------------------------------- cards ---- */

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 26px 24px;
    box-shadow: var(--shadow-xs);
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-200);
    box-shadow: var(--shadow);
}

.card h3 {
    margin-top: 0;
    font-size: 1.08rem;
}

.card p:last-child {
    margin-bottom: 0;
}

.card p {
    font-size: .94rem;
    color: var(--body);
}

.card-ico {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--blue-100), var(--blue-200));
    color: var(--blue-700);
}

.card-ico svg {
    width: 22px;
    height: 22px;
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 14px 0 0;
    font-size: .92rem;
}

.card-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 7px;
}

.card-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: .62em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--blue-400);
}

/* ------------------------------------------------------------- steps ---- */

.steps {
    counter-reset: step;
    display: grid;
    gap: 18px;
}

.step {
    position: relative;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 24px 26px 24px 76px;
    box-shadow: var(--shadow-xs);
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.step:hover {
    transform: translateX(4px);
    border-color: var(--blue-200);
    box-shadow: var(--shadow);
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 24px;
    top: 22px;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: .95rem;
    color: #fff;
    background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
    box-shadow: 0 8px 18px -10px rgba(37, 99, 235, .9);
}

.step h3 {
    margin: 0 0 6px;
}

.step p {
    margin: 0;
    font-size: .94rem;
}

/* ------------------------------------------------------------- table ---- */

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--card);
    box-shadow: var(--shadow-xs);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .93rem;
}

th,
td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

th {
    background: var(--blue-50);
    color: var(--blue-800);
    font-weight: 700;
    font-size: .85rem;
    letter-spacing: .02em;
    white-space: nowrap;
}

tbody tr {
    transition: background-color .2s var(--ease);
}

tbody tr:hover {
    background: var(--blue-50);
}

tbody tr:last-child td {
    border-bottom: 0;
}

/* ----------------------------------------------------------- callout ---- */

.callout {
    display: flex;
    gap: 14px;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    background: var(--blue-50);
    border: 1px solid var(--line-strong);
    border-left: 4px solid var(--blue-500);
    margin: 22px 0;
    font-size: .94rem;
}

.callout p:last-child {
    margin-bottom: 0;
}

.callout .ico {
    flex: none;
    color: var(--blue-600);
    margin-top: 2px;
}

.callout .ico svg {
    width: 19px;
    height: 19px;
}

.callout.warn {
    background: #fff8ec;
    border-color: #f4dcb4;
    border-left-color: #e8a33d;
}

[data-theme="dark"] .callout.warn {
    background: #2a2113;
    border-color: #5a4726;
}

.callout.warn .ico {
    color: #d98a1c;
}

kbd {
    display: inline-block;
    font-family: var(--mono);
    font-size: .82em;
    font-weight: 600;
    color: var(--ink);
    background: var(--card);
    border: 1px solid var(--line-strong);
    border-bottom-width: 2px;
    border-radius: 8px;
    padding: 1px 8px;
    margin: 0 2px;
    box-shadow: 0 1px 0 var(--line);
}

/* -------------------------------------------------------------- wiki ---- */

.wiki {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 40px;
    padding: 40px 0 80px;
    align-items: start;
}

.wiki-side {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 18px 16px;
    box-shadow: var(--shadow-xs);
    max-height: calc(100vh - var(--header-h) - 44px);
    overflow-y: auto;
}

.wiki-side h4 {
    font-size: .74rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 18px 0 8px;
    padding-left: 10px;
}

.wiki-side h4:first-child {
    margin-top: 0;
}

.wiki-side a {
    display: block;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    color: var(--body);
    font-size: .91rem;
    font-weight: 500;
    transition: background-color .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
}

.wiki-side a:hover {
    background: var(--blue-50);
    color: var(--blue-700);
    transform: translateX(3px);
}

.wiki-side a[aria-current="page"] {
    background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
    color: #fff;
    font-weight: 600;
    box-shadow: 0 8px 18px -12px rgba(37, 99, 235, .9);
}

.side-search {
    position: relative;
    margin-bottom: 14px;
}

.side-search input {
    width: 100%;
    font-family: inherit;
    font-size: .9rem;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 9px 12px 9px 34px;
    transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.side-search input:focus {
    outline: none;
    border-color: var(--blue-400);
    box-shadow: 0 0 0 3px var(--blue-100);
}

.side-search svg {
    position: absolute;
    left: 11px;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
    height: 15px;
    color: var(--muted);
}

.wiki-body {
    min-width: 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .84rem;
    color: var(--muted);
    margin-bottom: 14px;
}

.breadcrumb a {
    color: var(--muted);
}

.breadcrumb a:hover {
    color: var(--blue-600);
}

.breadcrumb span {
    opacity: .6;
}

.wiki-body h1 {
    font-size: clamp(1.7rem, 3.2vw, 2.3rem);
    margin-bottom: .35em;
}

.wiki-body .lead {
    font-size: 1.04rem;
    color: var(--muted);
    margin-bottom: 2em;
    padding-bottom: 1.6em;
    border-bottom: 1px solid var(--line);
}

.wiki-body h2 {
    padding-top: .3em;
    margin-top: 2.2em;
    scroll-margin-top: calc(var(--header-h) + 20px);
}

.wiki-body h2::after {
    content: "";
    display: block;
    width: 42px;
    height: 3px;
    border-radius: 3px;
    margin-top: .5em;
    background: linear-gradient(90deg, var(--blue-500), transparent);
}

.wiki-body ul,
.wiki-body ol {
    padding-left: 22px;
    margin: 0 0 1.2em;
}

.wiki-body li {
    margin-bottom: .5em;
}

.wiki-body li::marker {
    color: var(--blue-400);
}

.wiki-nav {
    display: flex;
    gap: 14px;
    margin-top: 56px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
}

.wiki-nav a {
    flex: 1;
    display: block;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--card);
    transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.wiki-nav a:hover {
    transform: translateY(-3px);
    border-color: var(--blue-300);
    box-shadow: var(--shadow-sm);
}

.wiki-nav small {
    display: block;
    font-size: .76rem;
    color: var(--muted);
    margin-bottom: 3px;
}

.wiki-nav strong {
    color: var(--ink);
    font-size: .95rem;
}

.wiki-nav .next {
    text-align: right;
}

/* ------------------------------------------------------------ footer ---- */

.site-footer {
    border-top: 1px solid var(--line);
    background: var(--bg-soft);
    padding: 46px 0 34px;
    font-size: .9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-grid h5 {
    color: var(--ink);
    font-size: .84rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    margin: 0 0 12px;
}

.footer-grid a {
    display: block;
    color: var(--muted);
    padding: 4px 0;
    transition: color .2s var(--ease), transform .2s var(--ease);
}

.footer-grid a:hover {
    color: var(--blue-600);
    transform: translateX(3px);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: space-between;
    align-items: center;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .84rem;
}

/* ----------------------------------------------------------- reveals ---- */

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* -------------------------------------------------------- responsive ---- */

@media (max-width: 1020px) {
    .hero .wrap {
        grid-template-columns: minmax(0, 1fr);
        gap: 40px;
    }

    .hero-visual {
        order: -1;
        max-width: 560px;
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .wiki {
        grid-template-columns: minmax(0, 1fr);
        gap: 26px;
    }

    .wiki-side {
        position: static;
        max-height: none;
    }
}

@media (max-width: 760px) {
    .nav {
        position: fixed;
        inset: var(--header-h) 0 auto 0;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px 18px 20px;
        background: var(--card);
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .28s var(--ease), transform .28s var(--ease);
    }

    .nav.is-open {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .nav a {
        padding: 12px 14px;
        border-radius: var(--radius-sm);
    }

    .nav-toggle {
        display: grid;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .footer-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 22px;
    }

    .section {
        padding: 54px 0;
    }

    .hero {
        padding: 46px 0 60px;
    }

    .step {
        padding: 22px 20px 22px 66px;
    }

    .step::before {
        left: 18px;
        width: 30px;
        height: 30px;
        font-size: .88rem;
    }

    .wiki-nav {
        flex-direction: column;
    }
}