*,
*::before,
*::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}

html {
scroll-behavior: smooth;
font-size: 16px;
}

body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
line-height: 1.6;
color: #111827;
background-color: #f3f4f6;
font-size: 16px;
overflow-x: hidden;
}

.container {
max-width: 1240px;
margin: 0 auto;
padding: 0 24px;
}

header {
background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
box-shadow: 0 4px 12px rgba(15, 23, 42, 0.4);
position: sticky;
top: 0;
z-index: 999;
}

.header-inner {
display: flex;
justify-content: space-between;
align-items: center;
padding: 18px 0;
}

.brand {
font-size: 32px;
font-weight: 800;
color: #3b82f6;
letter-spacing: 2px;
text-transform: lowercase;
}

.menu-toggle {
display: none;
flex-direction: column;
background: transparent;
border: none;
cursor: pointer;
padding: 10px;
gap: 4px;
}

.menu-toggle span {
width: 28px;
height: 3px;
background-color: #dbeafe;
border-radius: 3px;
transition: all 0.3s ease;
}

.navigation {
display: flex;
gap: 8px;
}

.navigation a {
color: #e5f0ff;
text-decoration: none;
font-size: 15px;
font-weight: 500;
padding: 10px 18px;
border-radius: 6px;
transition: all 0.3s ease;
}

.navigation a:hover {
background-color: rgba(59, 130, 246, 0.18);
color: #3b82f6;
backdrop-filter: blur(12px);
}

main {
min-height: calc(100vh - 180px);
}

section {
padding: 70px 0;
}

section h2 {
font-size: 34px;
color: #0f172a;
margin-bottom: 20px;
font-weight: 800;
text-align: center;
}

section h3 {
font-size: 24px;
color: #1f2937;
margin-bottom: 16px;
font-weight: 700;
}

.intro-text {
font-size: 17px;
color: #4b5563;
margin-bottom: 48px;
line-height: 1.8;
text-align: center;
max-width: 960px;
margin-left: auto;
margin-right: auto;
}

.hero-section {
background: linear-gradient(180deg, #020617 0%, #0f172a 52%, #f3f4f6 100%);
padding: 90px 0 70px;
}

.hero-wrapper {
display: flex;
flex-direction: column;
gap: 48px;
align-items: center;
}

.hero-info {
text-align: center;
max-width: 980px;
}

.hero-info h1 {
font-size: 38px;
color: #e5f0ff;
margin-bottom: 28px;
line-height: 1.4;
font-weight: 800;
}

.hero-info p {
font-size: 18px;
color: #bfdbfe;
margin-bottom: 24px;
line-height: 1.9;
}

.hero-visual {
width: 100%;
max-width: 900px;
border-radius: 16px;
overflow: hidden;
box-shadow: 0 20px 50px rgba(15, 23, 42, 0.6);
}

.hero-visual img {
width: 100%;
height: auto;
display: block;
}

.primary-btn {
display: inline-block;
background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
color: #fff;
padding: 16px 40px;
border-radius: 8px;
text-decoration: none;
font-weight: 700;
font-size: 17px;
transition: all 0.3s ease;
box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
margin-top: 16px;
}

.primary-btn:hover {
background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
transform: translateY(-3px);
box-shadow: 0 8px 26px rgba(37, 99, 235, 0.55);
}

.guide-section {
background-color: #ffffff;
}

.guide-layout {
display: grid;
grid-template-columns: 1fr;
gap: 40px;
max-width: 1000px;
margin: 0 auto;
}

.guide-item {
background: linear-gradient(135deg, #f9fafb 0%, #ecfdf5 50%, #e0f2fe 100%);
border-radius: 12px;
padding: 32px;
position: relative;
box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
transition: all 0.3s ease;
border-left: 5px solid #3b82f6;
}

.guide-item:hover {
transform: translateY(-4px);
box-shadow: 0 10px 26px rgba(15, 23, 42, 0.13);
}

.guide-number {
position: absolute;
top: 24px;
right: 24px;
font-size: 48px;
font-weight: 900;
color: rgba(59, 130, 246, 0.2);
line-height: 1;
}

.guide-item h3 {
color: #0f172a;
margin-bottom: 20px;
padding-right: 60px;
}

.guide-item p {
color: #4b5563;
font-size: 16px;
line-height: 1.8;
margin-bottom: 16px;
}

.guide-item p:last-of-type {
margin-bottom: 20px;
}

.guide-link {
display: inline-block;
color: #2563eb;
font-weight: 600;
font-size: 15px;
text-decoration: none;
padding: 8px 20px;
border: 2px solid #3b82f6;
border-radius: 6px;
transition: all 0.3s ease;
background-color: rgba(59, 130, 246, 0.03);
}

.guide-link:hover {
background-color: #3b82f6;
color: #ffffff;
}

.product-showcase {
background-color: #e5e7eb;
}

.product-showcase-grid {
display: grid;
grid-template-columns: 1fr;
gap: 48px;
max-width: 1100px;
margin: 0 auto;
}

.showcase-card {
background: #ffffff;
border-radius: 16px;
overflow: hidden;
box-shadow: 0 6px 20px rgba(15, 23, 42, 0.1);
transition: all 0.4s ease;
display: flex;
flex-direction: column;
}

.showcase-card:hover {
box-shadow: 0 14px 40px rgba(15, 23, 42, 0.16);
transform: translateY(-6px);
}

.card-image {
width: 100%;
height: 320px;
overflow: hidden;
background: linear-gradient(135deg, #e0f2fe 0%, #bfdbfe 100%);
}

.card-image img {
width: 100%;
height: 100%;
object-fit: cover;
transition: transform 0.4s ease;
}

.showcase-card:hover .card-image img {
transform: scale(1.08);
}

.card-content {
padding: 32px;
flex: 1;
display: flex;
flex-direction: column;
}

.card-content h3 {
color: #0f172a;
margin-bottom: 20px;
}

.card-content p {
color: #4b5563;
font-size: 16px;
line-height: 1.8;
margin-bottom: 16px;
flex: 1;
}

.showcase-btn {
display: inline-block;
align-self: flex-start;
background-color: #3b82f6;
color: #ffffff;
padding: 12px 28px;
border-radius: 6px;
text-decoration: none;
font-weight: 600;
font-size: 15px;
transition: all 0.3s ease;
margin-top: auto;
}

.showcase-btn:hover {
background-color: #2563eb;
transform: translateX(4px);
}

.comparison-detailed {
background-color: #ffffff;
}

.comparison-cards {
display: grid;
grid-template-columns: 1fr;
gap: 36px;
margin-bottom: 60px;
}

.compare-card {
background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
border-radius: 12px;
padding: 32px;
box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
border-top: 4px solid #3b82f6;
transition: all 0.3s ease;
}

.compare-card:hover {
box-shadow: 0 10px 26px rgba(15, 23, 42, 0.15);
transform: translateY(-4px);
}

.compare-card h3 {
color: #0f172a;
margin-bottom: 24px;
font-size: 26px;
}

.compare-detail {
background: #ffffff;
border-radius: 8px;
padding: 24px;
margin-bottom: 24px;
}

.detail-row {
display: flex;
justify-content: space-between;
padding: 12px 0;
border-bottom: 1px solid #e5e7eb;
}

.detail-row:last-child {
border-bottom: none;
}

.detail-label {
font-weight: 600;
color: #1f2937;
font-size: 15px;
}

.detail-value {
color: #4b5563;
font-size: 15px;
text-align: right;
max-width: 60%;
}

.compare-summary {
color: #4b5563;
font-size: 15px;
line-height: 1.8;
padding: 16px;
background: #eff6ff;
border-radius: 8px;
border-left: 4px solid #3b82f6;
}

.selection-guide {
background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
border-radius: 16px;
padding: 48px;
color: #e5f0ff;
}

.selection-guide h3 {
color: #dbeafe;
margin-bottom: 32px;
font-size: 28px;
text-align: center;
}

.guide-grid {
display: grid;
grid-template-columns: 1fr;
gap: 28px;
margin-bottom: 32px;
}

.guide-box {
background: rgba(15, 23, 42, 0.35);
padding: 28px;
border-radius: 10px;
backdrop-filter: blur(14px);
border: 1px solid rgba(148, 163, 184, 0.4);
}

.guide-box h4 {
color: #dbeafe;
font-size: 20px;
margin-bottom: 16px;
font-weight: 700;
}

.guide-box p {
color: #e5f0ff;
font-size: 15px;
line-height: 1.8;
margin-bottom: 10px;
}

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

.guide-note {
color: #dbeafe;
font-size: 16px;
line-height: 1.8;
text-align: center;
padding: 20px;
background: rgba(15, 23, 42, 0.65);
border-radius: 8px;
font-style: italic;
border: 1px solid rgba(148, 163, 184, 0.5);
}

.faq-detailed {
background-color: #e5e7eb;
}

.faq-container {
max-width: 960px;
margin: 0 auto;
}

.faq-block {
background: #ffffff;
margin-bottom: 20px;
border-radius: 10px;
overflow: hidden;
box-shadow: 0 3px 10px rgba(15, 23, 42, 0.06);
transition: all 0.3s ease;
}

.faq-block:hover {
box-shadow: 0 6px 16px rgba(15, 23, 42, 0.1);
}

.faq-title {
display: flex;
justify-content: space-between;
align-items: center;
padding: 24px 28px;
cursor: pointer;
user-select: none;
background: linear-gradient(90deg, #eff6ff 0%, #ffffff 100%);
border: none;
width: 100%;
transition: background-color 0.3s ease;
}

.faq-title:hover {
background: linear-gradient(90deg, #dbeafe 0%, #eff6ff 100%);
}

.faq-title span:first-child {
font-weight: 700;
color: #0f172a;
font-size: 18px;
flex: 1;
text-align: left;
}

.faq-toggle {
width: 28px;
height: 28px;
position: relative;
flex-shrink: 0;
margin-left: 20px;
border-radius: 50%;
background-color: #3b82f6;
transition: transform 0.3s ease;
}

.faq-toggle::before,
.faq-toggle::after {
content: '';
position: absolute;
background-color: #ffffff;
transition: transform 0.3s ease;
}

.faq-toggle::before {
width: 14px;
height: 2px;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}

.faq-toggle::after {
width: 2px;
height: 14px;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}

.faq-title[aria-expanded="true"] .faq-toggle {
transform: rotate(45deg);
}

.faq-content {
max-height: 0;
overflow: hidden;
transition: max-height 0.4s ease-out, padding 0.4s ease-out;
padding: 0 28px;
background: #ffffff;
}

.faq-content.active {
max-height: 2000px;
padding: 0 28px 28px;
}

.faq-content p {
color: #4b5563;
font-size: 16px;
line-height: 1.9;
margin-bottom: 16px;
}

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

.news-timeline {
background-color: #ffffff;
}

.timeline {
max-width: 980px;
margin: 0 auto;
position: relative;
padding-left: 40px;
}

.timeline::before {
content: '';
position: absolute;
left: 0;
top: 0;
bottom: 0;
width: 4px;
background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
border-radius: 2px;
}

.timeline-item {
position: relative;
margin-bottom: 48px;
padding-left: 28px;
}

.timeline-item::before {
content: '';
position: absolute;
left: -48px;
top: 8px;
width: 16px;
height: 16px;
background-color: #3b82f6;
border: 4px solid #ffffff;
border-radius: 50%;
box-shadow: 0 0 0 4px #bfdbfe;
}

.timeline-date {
display: inline-block;
background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
color: #ffffff;
padding: 6px 16px;
border-radius: 20px;
font-size: 14px;
font-weight: 600;
margin-bottom: 12px;
}

.timeline-content {
background: #f3f4f6;
border-radius: 10px;
padding: 28px;
box-shadow: 0 3px 12px rgba(15, 23, 42, 0.06);
transition: all 0.3s ease;
}

.timeline-content:hover {
background: #e5e7eb;
box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12);
}

.timeline-content h3 {
color: #0f172a;
margin-bottom: 16px;
font-size: 22px;
}

.timeline-content p {
color: #4b5563;
font-size: 16px;
line-height: 1.8;
margin-bottom: 14px;
}

.timeline-link {
display: inline-block;
color: #2563eb;
font-weight: 600;
font-size: 15px;
text-decoration: none;
margin-top: 8px;
transition: all 0.3s ease;
}

.timeline-link:hover {
color: #3b82f6;
text-decoration: underline;
}

.about-simple {
background-color: #e5e7eb;
}

.about-box {
max-width: 920px;
margin: 0 auto;
background: #ffffff;
padding: 48px;
border-radius: 12px;
box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
}

.about-box h2 {
text-align: left;
margin-bottom: 28px;
color: #0f172a;
}

.about-box p {
color: #4b5563;
font-size: 17px;
line-height: 1.9;
margin-bottom: 24px;
}

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

.risk-warning {
background-color: #ffffff;
}

.warning-box {
max-width: 960px;
margin: 0 auto;
background: #fff5f5;
padding: 48px;
border-radius: 12px;
border: 3px solid #fc8181;
}

.warning-box h2 {
text-align: left;
color: #c53030;
margin-bottom: 32px;
}

.warning-box h3 {
color: #e53e3e;
margin-top: 32px;
margin-bottom: 20px;
font-size: 22px;
}

.warning-box h3:first-of-type {
margin-top: 0;
}

.warning-box p {
color: #4b5563;
font-size: 16px;
line-height: 1.8;
margin-bottom: 16px;
}

.warning-box ul {
list-style: none;
padding: 0;
margin-bottom: 24px;
}

.warning-box li {
padding: 10px 0 10px 32px;
position: relative;
color: #4b5563;
font-size: 16px;
line-height: 1.8;
}

.warning-box li::before {
content: '⚠';
position: absolute;
left: 0;
color: #e53e3e;
font-size: 18px;
}

.warning-box strong {
color: #c53030;
font-weight: 700;
}

.contact-cta {
background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
padding: 80px 0;
}

.cta-wrapper {
max-width: 860px;
margin: 0 auto;
text-align: center;
color: #e5f0ff;
}

.cta-wrapper h2 {
color: #dbeafe;
margin-bottom: 24px;
}

.cta-wrapper p {
font-size: 17px;
line-height: 1.8;
margin-bottom: 20px;
}

.cta-actions {
display: flex;
flex-direction: column;
gap: 20px;
margin: 48px 0 36px;
align-items: center;
}

.main-cta {
display: inline-block;
background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
color: #ffffff;
padding: 18px 48px;
border-radius: 10px;
text-decoration: none;
font-weight: 700;
font-size: 18px;
box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
transition: all 0.3s ease;
}

.main-cta:hover {
background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
transform: translateY(-3px);
box-shadow: 0 12px 32px rgba(37, 99, 235, 0.55);
}

.secondary-cta {
display: inline-block;
background: transparent;
color: #dbeafe;
padding: 16px 44px;
border-radius: 10px;
text-decoration: none;
font-weight: 600;
font-size: 17px;
border: 2px solid #dbeafe;
transition: all 0.3s ease;
}

.secondary-cta:hover {
background-color: #dbeafe;
color: #0f172a;
}

.cta-notice {
font-size: 15px;
color: #93c5fd;
font-style: italic;
margin-top: 8px;
}

footer {
background: linear-gradient(135deg, #020617 0%, #0b1120 100%);
color: #dbeafe;
padding: 48px 0 24px;
}

.footer-grid {
display: grid;
grid-template-columns: 1fr;
gap: 32px;
margin-bottom: 32px;
}

.footer-main {
text-align: center;
}

.footer-brand {
font-size: 22px;
font-weight: 700;
color: #93c5fd;
margin-bottom: 16px;
}

.footer-intro {
font-size: 15px;
color: #dbeafe;
line-height: 1.7;
max-width: 800px;
margin: 0 auto;
}

.footer-nav {
display: flex;
justify-content: center;
gap: 28px;
flex-wrap: wrap;
}

.footer-nav a {
color: #93c5fd;
text-decoration: none;
font-size: 15px;
font-weight: 500;
transition: color 0.3s ease;
}

.footer-nav a:hover {
color: #bfdbfe;
text-decoration: underline;
}

.footer-bottom {
text-align: center;
padding-top: 28px;
border-top: 1px solid rgba(191, 219, 254, 0.25);
}

.footer-bottom p {
font-size: 14px;
color: #93c5fd;
}

@media (min-width: 768px) {
.hero-info h1 {
font-size: 42px;
}

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

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

.cta-actions {
flex-direction: row;
justify-content: center;
}

.footer-grid {
grid-template-columns: 2fr 1fr;
align-items: center;
}

.footer-main {
text-align: left;
}

.footer-nav {
justify-content: flex-end;
}
}

@media (min-width: 1024px) {
.showcase-card {
flex-direction: row;
}

.card-image {
width: 40%;
height: auto;
min-height: 350px;
}

.card-content {
width: 60%;
}

.showcase-card:nth-child(even) {
flex-direction: row-reverse;
}

.detail-row {
align-items: center;
}
}

@media (max-width: 767px) {
.menu-toggle {
display: flex;
}

.navigation {
position: absolute;
top: 100%;
left: 0;
right: 0;
background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
flex-direction: column;
gap: 0;
max-height: 0;
overflow: hidden;
transition: max-height 0.4s ease-out;
box-shadow: 0 8px 16px rgba(15, 23, 42, 0.45);
}

.navigation.active {
max-height: 450px;
}

.navigation a {
padding: 18px 24px;
border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.navigation a:last-child {
border-bottom: none;
}

.hero-info h1 {
font-size: 30px;
}

section h2 {
font-size: 28px;
}

section h3 {
font-size: 22px;
}

.about-box,
.warning-box,
.selection-guide {
padding: 28px;
}

.timeline {
padding-left: 28px;
}

.timeline-item {
padding-left: 20px;
}

.timeline-item::before {
left: -38px;
}

.detail-row {
flex-direction: column;
align-items: flex-start;
gap: 6px;
}

.detail-value {
text-align: left;
max-width: 100%;
}

.main-cta,
.secondary-cta {
width: 100%;
max-width: 340px;
}
}