:root {
    --blue-950: #10263f;
    --blue-900: #163452;
    --blue-800: #1d4268;
    --blue-700: #285580;
    --blue-600: #356a9c;
    --blue-500: #4f82b1;
    --blue-400: #79a3c7;
    --blue-300: #a8c4dd;
    --blue-200: #cdddec;
    --blue-100: #e8f0f7;
    --blue-050: #f4f8fb;
    --ink: #182536;
    --muted: #607187;
    --line: #d6e1eb;
    --surface: #ffffff;
    --surface-soft: #f7fafc;
    --success: #247553;
    --warning: #8a5d18;
    --danger: #a33a3a;
    --shadow-sm: 0 8px 24px rgba(21, 52, 82, 0.07);
    --shadow-md: 0 18px 45px rgba(21, 52, 82, 0.12);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--surface);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

body.menu-open {
    overflow: hidden;
}

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

a {
    color: var(--blue-700);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--blue-900);
}

button,
input,
textarea,
select {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

h1,
h2,
h3,
h4 {
    color: var(--blue-950);
    line-height: 1.18;
    letter-spacing: -0.025em;
}

h1 {
    font-size: clamp(2.25rem, 5.5vw, 4.7rem);
    margin: 0;
}

h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    margin: 0 0 0.8rem;
}

h3 {
    font-size: clamp(1.25rem, 2.2vw, 1.6rem);
    margin: 0 0 0.6rem;
}

p {
    margin: 0 0 1rem;
}

ul,
ol {
    margin-top: 0;
}

.portal-container {
    width: min(calc(100% - 36px), var(--container));
    margin-inline: auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    transform: translateY(-140%);
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--blue-950);
    color: #fff;
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(0);
}

.utility-bar {
    background: var(--blue-950);
    color: #fff;
    font-size: 0.84rem;
}

.utility-inner {
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.utility-inner p {
    margin: 0;
    color: var(--blue-200);
}

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

.utility-links a {
    color: #fff;
    text-decoration: none;
}

.main-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(205, 221, 236, 0.9);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
}

.nav-inner {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--blue-950);
    text-decoration: none;
}

.brand:hover {
    color: var(--blue-950);
}

.brand-mark {
    width: 43px;
    height: 43px;
    flex: 0 0 43px;
}

.brand-mark svg {
    width: 100%;
    height: 100%;
}

.brand-mark rect {
    fill: var(--blue-800);
}

.brand-mark path {
    fill: #fff;
}

.brand strong,
.footer-brand {
    display: block;
    font-size: 1.16rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.brand small {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu > a {
    padding: 10px 13px;
    border-radius: 10px;
    color: var(--ink);
    font-size: 0.94rem;
    font-weight: 650;
    text-decoration: none;
}

.nav-menu > a:hover,
.nav-menu > a.active {
    color: var(--blue-800);
    background: var(--blue-100);
}

.nav-menu > .nav-login {
    margin-left: 8px;
    padding-inline: 18px;
    color: #fff;
    background: var(--blue-800);
}

.nav-menu > .nav-login:hover {
    color: #fff;
    background: var(--blue-950);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 42px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
}

.nav-toggle span:not(.sr-only) {
    display: block;
    height: 2px;
    margin: 4px 0;
    background: var(--blue-900);
    border-radius: 999px;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(72px, 9vw, 122px) 0;
    background:
        radial-gradient(circle at 80% 18%, rgba(121, 163, 199, 0.26), transparent 30%),
        radial-gradient(circle at 9% 90%, rgba(168, 196, 221, 0.36), transparent 32%),
        linear-gradient(135deg, var(--blue-050), #fff 58%, var(--blue-100));
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(40, 85, 128, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(40, 85, 128, 0.035) 1px, transparent 1px);
    background-size: 34px 34px;
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    align-items: center;
    gap: clamp(42px, 7vw, 90px);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 7px 12px;
    border: 1px solid var(--blue-200);
    border-radius: 999px;
    color: var(--blue-800);
    background: rgba(255, 255, 255, 0.75);
    font-size: 0.78rem;
    font-weight: 750;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue-600);
}

.hero-copy > p {
    max-width: 700px;
    margin: 24px 0 0;
    color: var(--muted);
    font-size: clamp(1.03rem, 1.8vw, 1.2rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.btn {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 12px 20px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-weight: 750;
    line-height: 1.2;
    text-decoration: none;
    transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    color: #fff;
    background: var(--blue-800);
    box-shadow: 0 10px 24px rgba(29, 66, 104, 0.18);
}

.btn-primary:hover {
    color: #fff;
    background: var(--blue-950);
}

.btn-secondary {
    color: var(--blue-900);
    border-color: var(--blue-300);
    background: rgba(255, 255, 255, 0.86);
}

.btn-secondary:hover {
    border-color: var(--blue-600);
    background: #fff;
}

.btn-small {
    min-height: 40px;
    padding: 9px 15px;
    border-radius: 10px;
    font-size: 0.88rem;
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 18px 24px;
    margin: 26px 0 0;
    padding: 0;
    list-style: none;
    color: var(--blue-900);
    font-size: 0.9rem;
    font-weight: 650;
}

.hero-points li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-points li::before {
    content: "✓";
    display: grid;
    width: 23px;
    height: 23px;
    place-items: center;
    border-radius: 50%;
    color: var(--blue-900);
    background: var(--blue-200);
    font-size: 0.75rem;
}

.hero-panel {
    position: relative;
    min-height: 455px;
}

.hero-orbit {
    position: absolute;
    inset: 7% 6%;
    border: 1px solid var(--blue-200);
    border-radius: 44% 56% 55% 45% / 46% 44% 56% 54%;
    transform: rotate(-6deg);
}

.hero-card-stack {
    position: absolute;
    inset: 0;
}

.mini-tool {
    position: absolute;
    width: min(285px, 76%);
    padding: 22px;
    border: 1px solid rgba(205, 221, 236, 0.95);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow-md);
}

.mini-tool:nth-child(1) {
    top: 0;
    right: 6%;
    transform: rotate(2deg);
}

.mini-tool:nth-child(2) {
    top: 35%;
    left: 0;
    transform: rotate(-3deg);
}

.mini-tool:nth-child(3) {
    right: 0;
    bottom: 0;
    transform: rotate(1deg);
}

.mini-tool-icon {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    margin-bottom: 16px;
    border-radius: 12px;
    color: #fff;
    background: var(--blue-700);
    font-weight: 800;
}

.mini-tool h2 {
    margin: 0 0 6px;
    font-size: 1.02rem;
}

.mini-tool p {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.5;
}

.section {
    padding: clamp(66px, 8vw, 104px) 0;
}

.section-soft {
    border-block: 1px solid var(--line);
    background: var(--blue-050);
}

.section-dark {
    color: #fff;
    background: linear-gradient(135deg, var(--blue-950), var(--blue-800));
}

.section-dark h2,
.section-dark h3 {
    color: #fff;
}

.section-dark p {
    color: var(--blue-200);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 38px;
}

.section-heading.center {
    margin-inline: auto;
    text-align: center;
}

.section-heading p {
    margin: 0;
    color: var(--muted);
    font-size: 1.06rem;
}

.section-dark .section-heading p {
    color: var(--blue-200);
}

.kicker {
    display: block;
    margin-bottom: 10px;
    color: var(--blue-700);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-dark .kicker {
    color: var(--blue-300);
}

.tool-grid,
.guide-grid,
.value-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.tool-card,
.guide-card,
.value-card {
    position: relative;
    display: flex;
    min-width: 0;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.tool-card:hover,
.guide-card:hover,
.value-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-300);
    box-shadow: var(--shadow-md);
}

.tool-card {
    padding: 26px;
}

.tool-icon {
    display: grid;
    width: 50px;
    height: 50px;
    place-items: center;
    margin-bottom: 22px;
    border-radius: 15px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-900));
    font-weight: 850;
}

.tool-card h3 {
    font-size: 1.18rem;
}

.tool-card p {
    flex: 1;
    color: var(--muted);
    font-size: 0.94rem;
}

.tool-card ul {
    margin: 0 0 22px;
    padding-left: 18px;
    color: var(--muted);
    font-size: 0.87rem;
}

.tool-card .btn {
    width: 100%;
}

.guide-card {
    overflow: hidden;
}

.guide-card-top {
    min-height: 126px;
    padding: 24px;
    background:
        radial-gradient(circle at 95% 5%, rgba(255, 255, 255, 0.35), transparent 32%),
        linear-gradient(135deg, var(--blue-700), var(--blue-900));
}

.guide-card-top .category {
    color: var(--blue-100);
}

.guide-card-top h3 {
    margin: 8px 0 0;
    color: #fff;
    font-size: 1.12rem;
}

.guide-card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 22px 24px 24px;
}

.guide-card-body p {
    flex: 1;
    color: var(--muted);
    font-size: 0.92rem;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
    margin-bottom: 14px;
    color: var(--muted);
    font-size: 0.78rem;
}

.category {
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 750;
    text-decoration: none;
}

.text-link::after {
    content: "→";
    transition: transform 150ms ease;
}

.text-link:hover::after {
    transform: translateX(3px);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    counter-reset: process;
}

.process-step {
    counter-increment: process;
    padding: 26px 24px;
    border: 1px solid rgba(168, 196, 221, 0.35);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.06);
}

.process-step::before {
    content: "0" counter(process);
    display: block;
    margin-bottom: 20px;
    color: var(--blue-300);
    font-size: 0.86rem;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.process-step h3 {
    font-size: 1.08rem;
}

.process-step p {
    margin: 0;
    font-size: 0.91rem;
}

.value-card {
    padding: 28px;
}

.value-card h3 {
    font-size: 1.14rem;
}

.value-card p {
    margin: 0;
    color: var(--muted);
}

.cta-box {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 30px;
    padding: clamp(30px, 5vw, 54px);
    border: 1px solid var(--blue-300);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--blue-100), #fff);
    box-shadow: var(--shadow-sm);
}

.cta-box p {
    max-width: 720px;
    margin: 0;
    color: var(--muted);
}

.page-hero {
    padding: clamp(52px, 7vw, 90px) 0;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 80% 20%, rgba(121, 163, 199, 0.24), transparent 28%),
        linear-gradient(135deg, var(--blue-050), #fff);
}

.page-hero-inner {
    max-width: 850px;
}

.page-hero h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
}

.page-hero p {
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 1.08rem;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 0.84rem;
}

.breadcrumb a {
    text-decoration: none;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 32px;
}

.filter-chip {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    padding: 8px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink);
    background: #fff;
    font-size: 0.86rem;
    font-weight: 700;
    text-decoration: none;
}

.filter-chip:hover,
.filter-chip.active {
    color: #fff;
    border-color: var(--blue-800);
    background: var(--blue-800);
}

.search-box {
    position: relative;
    margin-left: auto;
}

.search-box input {
    width: min(330px, 100%);
    min-height: 44px;
    padding: 10px 14px 10px 42px;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--ink);
    background: #fff;
}

.search-box::before {
    content: "⌕";
    position: absolute;
    top: 7px;
    left: 14px;
    color: var(--muted);
    font-size: 1.35rem;
}

.guide-list-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.guide-list-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.guide-list-card[hidden] {
    display: none;
}

.guide-list-card h2 {
    margin: 10px 0 12px;
    font-size: 1.3rem;
}

.guide-list-card p {
    flex: 1;
    color: var(--muted);
    font-size: 0.94rem;
}

.empty-state {
    padding: 38px;
    border: 1px dashed var(--blue-300);
    border-radius: 18px;
    color: var(--muted);
    text-align: center;
    background: var(--blue-050);
}

.article-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 46px;
    padding-block: clamp(48px, 7vw, 84px);
}

.article-main {
    min-width: 0;
}

.article-header {
    padding-bottom: 30px;
    border-bottom: 1px solid var(--line);
}

.article-header h1 {
    max-width: 920px;
    font-size: clamp(2.15rem, 4.7vw, 3.8rem);
}

.article-lead {
    margin: 22px 0 0;
    color: var(--muted);
    font-size: 1.1rem;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    margin-top: 22px;
    color: var(--muted);
    font-size: 0.84rem;
}

.article-content {
    padding-top: 12px;
}

.article-content > p {
    color: #33475d;
    font-size: 1.04rem;
}

.article-section {
    padding-top: 34px;
}

.article-section h2 {
    font-size: clamp(1.55rem, 3vw, 2.05rem);
}

.article-section p,
.article-section li {
    color: #33475d;
}

.article-section ul,
.article-section ol {
    padding-left: 1.35rem;
}

.article-section li {
    margin-bottom: 0.65rem;
}

.steps {
    list-style: none;
    padding: 0 !important;
    counter-reset: guide-step;
}

.steps li {
    position: relative;
    min-height: 48px;
    padding: 7px 0 17px 58px;
    counter-increment: guide-step;
}

.steps li::before {
    content: counter(guide-step);
    position: absolute;
    top: 0;
    left: 0;
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border-radius: 12px;
    color: #fff;
    background: var(--blue-800);
    font-weight: 800;
}

.article-tip {
    margin-top: 32px;
    padding: 22px;
    border-left: 4px solid var(--blue-600);
    border-radius: 0 14px 14px 0;
    background: var(--blue-050);
}

.article-tip strong {
    color: var(--blue-900);
}

.article-sidebar {
    position: sticky;
    top: 104px;
}

.sidebar-card {
    margin-bottom: 18px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface-soft);
}

.sidebar-card h2 {
    margin-bottom: 14px;
    font-size: 1rem;
}

.sidebar-card ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sidebar-card li + li {
    margin-top: 10px;
}

.sidebar-card a {
    font-size: 0.88rem;
    text-decoration: none;
}

.sidebar-card .btn {
    width: 100%;
}

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

.faq-item {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
}

.faq-item summary {
    cursor: pointer;
    padding: 17px 20px;
    color: var(--blue-950);
    font-weight: 750;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    float: right;
    color: var(--blue-700);
    font-size: 1.25rem;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item p {
    margin: 0;
    padding: 0 20px 18px;
    color: var(--muted);
}

.related-guides {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.related-card {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
}

.related-card h3 {
    font-size: 1rem;
}

.related-card p {
    color: var(--muted);
    font-size: 0.86rem;
}

.tools-detail-grid {
    display: grid;
    gap: 30px;
}

.tool-detail {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.tool-detail-visual {
    min-height: 270px;
    padding: 34px;
    color: #fff;
    background:
        radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.22), transparent 25%),
        linear-gradient(135deg, var(--blue-600), var(--blue-950));
}

.tool-detail-visual span {
    display: block;
    margin-bottom: 58px;
    font-size: 3.2rem;
    font-weight: 900;
    opacity: 0.9;
}

.tool-detail-visual h2 {
    color: #fff;
    font-size: 1.65rem;
}

.tool-detail-content {
    padding: 34px;
}

.tool-detail-content > p {
    color: var(--muted);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 20px;
    margin: 22px 0 26px;
    padding: 0;
    list-style: none;
}

.feature-list li {
    position: relative;
    padding-left: 24px;
    color: #33475d;
    font-size: 0.91rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 850;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 38px;
}

.info-card {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 34px;
}

.contact-card,
.contact-form {
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.contact-list {
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
}

.contact-list li {
    margin-bottom: 16px;
}

.contact-list strong {
    display: block;
    color: var(--blue-950);
    font-size: 0.82rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--blue-950);
    font-size: 0.86rem;
    font-weight: 750;
}

.form-control {
    width: 100%;
    min-height: 48px;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: 11px;
    color: var(--ink);
    background: #fff;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-control:focus {
    outline: 3px solid rgba(79, 130, 177, 0.18);
    border-color: var(--blue-600);
}

.notice {
    padding: 17px 20px;
    border: 1px solid var(--blue-200);
    border-radius: 14px;
    color: #33475d;
    background: var(--blue-050);
}

.notice.success {
    border-color: #b8daca;
    background: #f0faf5;
}

.notice.error {
    border-color: #edc1c1;
    background: #fff5f5;
}

.legal-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
    gap: 40px;
}

.legal-nav {
    position: sticky;
    top: 104px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface-soft);
}

.legal-nav h2 {
    font-size: 1rem;
}

.legal-nav a {
    display: block;
    padding: 7px 0;
    font-size: 0.86rem;
    text-decoration: none;
}

.legal-content section {
    padding-bottom: 28px;
}

.legal-content h2 {
    font-size: 1.55rem;
}

.legal-content p,
.legal-content li {
    color: #33475d;
}

.not-found {
    min-height: 62vh;
    display: grid;
    place-items: center;
    text-align: center;
}

.not-found-inner {
    max-width: 650px;
}

.not-found-code {
    color: var(--blue-300);
    font-size: clamp(5rem, 20vw, 11rem);
    font-weight: 900;
    line-height: 0.9;
}

.site-footer {
    padding-top: 58px;
    color: var(--blue-200);
    background: var(--blue-950);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.45fr repeat(3, 1fr);
    gap: 36px;
    padding-bottom: 42px;
}

.footer-grid h2 {
    margin-bottom: 15px;
    color: #fff;
    font-size: 0.96rem;
}

.footer-grid p {
    max-width: 420px;
    color: var(--blue-200);
    font-size: 0.9rem;
}

.footer-grid ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-grid li + li {
    margin-top: 8px;
}

.footer-grid a {
    color: var(--blue-200);
    font-size: 0.88rem;
    text-decoration: none;
}

.footer-grid a:hover {
    color: #fff;
}

.footer-brand {
    margin-bottom: 12px;
    color: #fff !important;
    font-size: 1.3rem !important;
    font-weight: 850;
}

.footer-contact {
    margin-top: 18px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-block: 20px;
    border-top: 1px solid rgba(168, 196, 221, 0.18);
}

.footer-bottom p {
    margin: 0;
    color: var(--blue-300);
    font-size: 0.78rem;
}

@media (max-width: 1060px) {
    .tool-grid,
    .guide-grid,
    .value-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

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

    .hero-copy {
        max-width: 790px;
    }

    .hero-panel {
        width: min(620px, 100%);
        margin-inline: auto;
    }

    .article-shell {
        grid-template-columns: minmax(0, 1fr) 260px;
        gap: 30px;
    }

    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
    }

    .footer-grid section:last-child {
        grid-column: 2 / 4;
    }
}

@media (max-width: 820px) {
    .utility-inner {
        min-height: 32px;
    }

    .utility-inner p {
        display: none;
    }

    .utility-links {
        width: 100%;
        justify-content: space-between;
    }

    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 110px;
        right: 18px;
        left: 18px;
        display: none;
        max-height: calc(100vh - 130px);
        overflow: auto;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border: 1px solid var(--line);
        border-radius: 16px;
        background: #fff;
        box-shadow: var(--shadow-md);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu > a {
        padding: 12px 14px;
    }

    .nav-menu > .nav-login {
        margin-left: 0;
        text-align: center;
    }

    .article-shell,
    .legal-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar,
    .legal-nav {
        position: static;
    }

    .article-sidebar {
        order: -1;
    }

    .sidebar-card.toc {
        display: none;
    }

    .tool-detail,
    .contact-grid,
    .two-column {
        grid-template-columns: 1fr;
    }

    .tool-detail-visual {
        min-height: auto;
    }

    .tool-detail-visual span {
        margin-bottom: 26px;
    }

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

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

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

    .footer-grid section:last-child {
        grid-column: auto;
    }
}

@media (max-width: 600px) {
    .portal-container {
        width: min(calc(100% - 26px), var(--container));
    }

    .brand small {
        display: none;
    }

    .nav-inner {
        min-height: 68px;
    }

    .nav-menu {
        top: 100px;
        right: 13px;
        left: 13px;
    }

    .hero {
        padding-block: 58px 68px;
    }

    .hero-panel {
        min-height: 510px;
    }

    .mini-tool {
        width: 88%;
    }

    .mini-tool:nth-child(1) {
        right: 0;
    }

    .mini-tool:nth-child(2) {
        top: 34%;
    }

    .mini-tool:nth-child(3) {
        right: 0;
    }

    .tool-grid,
    .guide-grid,
    .value-grid,
    .guide-list-grid,
    .process-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding-block: 58px;
    }

    .filter-bar {
        align-items: stretch;
    }

    .search-box {
        width: 100%;
        margin-left: 0;
    }

    .search-box input {
        width: 100%;
    }

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

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

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

    .footer-bottom {
        flex-direction: column;
    }

    .article-header h1 {
        overflow-wrap: anywhere;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}