/* ===== 字体定义 ===== */
@font-face {
    font-family: 'SourceHanSerif';
    src: url('fonts/SourceHanSerif-Heavy.otf') format('opentype');
    font-weight: 900;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'SourceHanSerif';
    src: url('fonts/SourceHanSerif-ExtraLight.otf') format('opentype');
    font-weight: 200;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'SourceHanSerif';
    src: url('fonts/SourceHanSerif-Regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    font-size: 16px;
}

body {
    font-family: 'SourceHanSerif', 'Noto Serif SC', 'SimSun', serif;
    font-weight: 400;
    background-color: #F7F7F7;
    color: #30302E;
    line-height: 1.2;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; height: auto; }

/* ===== 总宽限制 ===== */
.nav-container, .hero-content, .footer-top {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 40px;
    padding-right: 40px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 105px;
    background-color: #F0EEE6;
    z-index: 1000;
    border-bottom: 1px solid #BBB3A9;
}

.nav-container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo img {
    width: auto;
    height: 100px;
    object-fit: contain;
    flex-shrink: 0;
}

.nav-logo span {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: 42px;
    color: #30302E;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 0;
}

.nav-menu li {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: 15px;
    color: #30302E;
}

.nav-menu li a {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: 26px;
    color: #30302E;
    padding: 8px 14px;
    transition: color 0.3s ease;
}

.nav-menu li a:hover {
    color: #DB6945;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #30302E;
}

/* ===== 通用区块 ===== */
.section {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    scroll-snap-align: start;
    padding-top: 120px;
}

.section-inner {
    width: 100%;
    max-width: 1400px;
    padding-left: 40px;
    padding-right: 40px;
}

/* ===== 英雄区 ===== */
.hero {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    background-color: #30302E;
    padding: 140px 0 60px;
    position: relative;
    scroll-snap-align: start;
}

.hero-content {
    width: 100%;
    padding-left: 40px;
    padding-right: 40px;
}

.hero-intro {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(28px, 3.8vw, 72px);
    color: #DEDCD1;
    margin-bottom: 0.05em;
    line-height: 1.2;
}

.hero-line {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(28px, 3.8vw, 72px);
    color: #DEDCD1;
    line-height: 1.2;
    margin-bottom: 0.05em;
}

#tw-1 { margin-bottom: 1.5em; }

.hero-line .heavy {
    font-weight: 900;
    color: #DEDCD1;
}

.hero-line .prefix {
    font-weight: 400;
    color: #DEDCD1;
}

#tw-1 .prefix {
    font-weight: 900;
}

.hero-line .accent {
    font-weight: 900;
    color: #DB6945;
}

.hero-line .punct {
    font-weight: 400;
    color: #DEDCD1;
}

.hero-line .suffix {
    font-weight: 900;
    color: #DB6945;
}

.hero-line .fix {
    font-weight: 400;
    color: #DEDCD1;
}

/* 光标 */
.typing-cursor {
    display: inline-block;
    width: 4px;
    height: 0.85em;
    background-color: #DEDCD1;
    margin-left: 2px;
    vertical-align: baseline;
    animation: blink 0.8s step-end infinite;
}

.hero-arrow {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: clamp(24px, 3vw, 40px);
    color: #DEDCD1;
    cursor: pointer;
    animation: floatArrow 2s ease-in-out infinite;
    opacity: 0.7;
}

.hero-stripes {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    z-index: 50;
    pointer-events: none;
}

.hero-stripe {
    flex: 1;
    background: #30302E;
    opacity: 0;
    animation: stripeReveal 0.8s ease forwards;
}

@keyframes stripeReveal {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; }
}

/* ===== P01：危机 vs 契机 ===== */
.p01 {
    background-color: #FAF9F5;
    text-align: center;
}

.p01 .section-inner {
    text-align: center;
}

.p01-title {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(28px, 3.8vw, 72px);
    color: #30302E;
    margin-bottom: 1.2em;
}

.p01-subtitle {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(28px, 3.8vw, 72px);
    color: #30302E;
    margin-bottom: 1.2em;
}

.p01-subtitle .crisis {
    font-weight: 900;
    color: #DB6945;
}

.p01-subtitle .opportunity {
    font-weight: 900;
    color: #629886;
}

.carousel {
    position: relative;
    overflow: hidden;
    min-height: auto;
}

.carousel-slide {
    opacity: 0;
    visibility: hidden;
    transition: transform 0.6s ease, opacity 0.6s ease, visibility 0.6s ease;
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
}

.carousel-slide:not(.active):not(.exit-left):not(.exit-right):not(.enter-from-left) {
    transform: translateX(100%);
}

.carousel-slide.enter-from-left {
    transform: translateX(-100%);
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    position: relative;
}

.carousel-slide.exit-left {
    transform: translateX(-100%);
}

.carousel-slide.exit-right {
    transform: translateX(100%);
}

.p01-desc {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(20px, 2.8vw, 48px);
    color: #30302E;
    margin-bottom: 0;
}

.p01-item {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(18px, 2.5vw, 42px);
    color: #30302E;
    line-height: 1.2;
    margin-bottom: 0;
}

.p01-item .bracket {
    font-weight: 900;
}

.p01-item.crisis-item .bracket {
    color: #DB6945;
}

.p01-item.opp-item .bracket {
    color: #629886;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #CBCADB;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.dot.active {
    background-color: #817DBA;
}

/* ===== P02：真相 ===== */
.p02 {
    background-color: #BCD1CA;
    text-align: center;
}

.p02 .section-inner {
    text-align: center;
}

/* P02所有文字和英雄区同步大小 */
.p02-line1, .p02-line2, .p02-line3, .p02-line4, .p02-line5 {
    font-family: 'SourceHanSerif', serif;
    font-size: clamp(28px, 3.8vw, 72px);
    line-height: 1.2;
    color: #30302E;
}

.p02-line1 {
    font-weight: 400;
    margin-bottom: 0.05em;
}

.p02-line2 {
    font-weight: 900;
    color: #DB6945;
    margin-bottom: 0.05em;
}

.p02-spacer {
    font-size: clamp(28px, 3.8vw, 72px);
    height: 1.2em;
    line-height: 1.2;
    margin: 0;
    visibility: hidden;
}

.p02-line3 {
    font-weight: 400;
    margin-bottom: 0.05em;
}

.p02-line4 {
    font-weight: 900;
    margin-bottom: 0.05em;
}

.p02-line5 {
    font-weight: 400;
}

.p02-line5 .accent {
    font-weight: 900;
    color: #DB6945;
}

/* ===== P03：数据 ===== */
.p03 {
    background-color: #FAF9F5;
}

.data-circles {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: nowrap;
}

.data-circle {
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background-color: #807EB9;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-shrink: 0;
    opacity: 0;
    animation: fadeInCircle 1s ease forwards;
}

.p03.animate .data-circle {
    animation: fadeInCircle 1s ease forwards;
}

.p03.animate .data-circle:nth-child(1) { animation-delay: 0s; }
.p03.animate .data-circle:nth-child(2) { animation-delay: 0s; }
.p03.animate .data-circle:nth-child(3) { animation-delay: 0s; }

@keyframes fadeInCircle {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.circle-line1 {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(22px, 3vw, 56px);
    color: #FAF9F5;
    line-height: 1.2;
    white-space: nowrap;
    opacity: 0;
}

.circle-line1 .accent {
    color: #F4DDD5;
}

.circle-line2 {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(22px, 3vw, 56px);
    color: #FAF9F5;
    line-height: 1.2;
    white-space: nowrap;
    opacity: 0;
}

.p03.animate .circle-line1,
.p03.animate .circle-line2 {
    animation: fadeInText 0.5s ease forwards;
}

.p03.animate .data-circle:nth-child(1) .circle-line1,
.p03.animate .data-circle:nth-child(1) .circle-line2 {
    animation-delay: 1.5s;
}
.p03.animate .data-circle:nth-child(2) .circle-line1,
.p03.animate .data-circle:nth-child(2) .circle-line2 {
    animation-delay: 3.0s;
}
.p03.animate .data-circle:nth-child(3) .circle-line1,
.p03.animate .data-circle:nth-child(3) .circle-line2 {
    animation-delay: 4.5s;
}

@keyframes fadeInText {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== P04：问和答 ===== */
.p04 {
    background-color: #F4DDD5;
    padding-bottom: 60px;
}

.qa-accent {
    font-weight: 900;
    color: #DB6945;
    animation: glowPulse 9s ease-in-out infinite;
}

.qa-accent:hover {
    color: #FAF9F5;
}

.qa-item:nth-child(1) .qa-accent { animation-delay: 0s; }
.qa-item:nth-child(2) .qa-accent { animation-delay: 3s; }
.qa-item:nth-child(3) .qa-accent { animation-delay: 6s; }

@keyframes glowPulse {
    0%, 11% { text-shadow: 0 0 5px rgba(219, 105, 69, 0.3); }
    33% { text-shadow: 0 0 15px rgba(219, 105, 69, 0.8), 0 0 30px rgba(219, 105, 69, 0.4), 0 0 1620px rgba(219, 105, 69, 0.2); }
    55%, 100% { text-shadow: 0 0 5px rgba(219, 105, 69, 0); }
}

.p04-questions {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 60vh;
}

.qa-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.15em;
    flex-wrap: wrap;
    transition: transform 0.8s ease;
}

.qa-hint-group {
    display: inline-flex;
    align-items: center;
    gap: 0.3em;
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    animation: hintShow 9s ease-in-out infinite, hintWidth 9s step-end infinite;
}

.qa-item:nth-child(1) .qa-hint-group { animation-delay: 0s; }
.qa-item:nth-child(2) .qa-hint-group { animation-delay: 3s; }
.qa-item:nth-child(3) .qa-hint-group { animation-delay: 6s; }

.qa-close-group {
    display: inline-flex;
    align-items: center;
    gap: 0.3em;
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: opacity 0.6s ease, max-width 0.6s ease;
}

.qa-item.active .qa-close-group {
    opacity: 1;
    max-width: 300px;
}

.qa-item.active .qa-hint-group {
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    animation: none;
}

.qa-arrow {
    font-size: 0.8em;
    color: #30302E;
    display: inline-block;
    animation: floatArrowHorizontal 2s ease-in-out infinite;
}

.qa-close-arrow {
    font-size: 0.8em;
    color: #30302E;
    display: inline-block;
    animation: floatArrowHorizontal 2s ease-in-out infinite;
}

.qa-hint {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(12px, 1.8vw, 24px);
    color: #DB6945;
}

.qa-close-hint {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(12px, 1.8vw, 24px);
    color: #DB6945;
}

@keyframes hintShow {
    0% { opacity: 0; }
    20% { opacity: 1; }
    25% { opacity: 1; }
    33% { opacity: 0; }
    100% { opacity: 0; }
}

@keyframes hintWidth {
    0%, 33% { max-width: 300px; }
    34%, 100% { max-width: 0; }
}

@keyframes floatArrowHorizontal {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-5px); }
}

@keyframes floatArrowVertical {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.qa-item {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(24px, 4vw, 64px);
    color: #30302E;
    line-height: 1.5;
    cursor: pointer;
    text-align: center;
    transition: max-height 1.0s ease, opacity 0.8s ease, transform 0.8s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0;
    max-height: 150px;
}

.p04-questions.has-active .qa-item:not(.active) {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 1.0s ease, opacity 0.8s ease;
}

.qa-item:hover {
    color: #DB6945;
}

.qa-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.15em;
    flex-wrap: wrap;
    transition: transform 0.8s ease;
}

.ans-comma {
    font-weight: 200;
    color: #30302E;
}

.qa-item.active .qa-hint-group,
.qa-item.active .qa-hint {
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    transition: opacity 0.6s ease;
}

.qa-item.active .qa-text {
    transform: translateY(-5px);
}

.qa-item.active {
    justify-content: center;
    max-height: 3000px;
    overflow: visible;
}

.qa-answer-inline {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(14px, 2.2vw, 32px);
    color: #30302E;
    line-height: 1.5;
    margin-top: 0;
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 1.0s ease, opacity 0.6s ease;
}

.qa-item.active .qa-answer-inline {
    max-height: 2000px;
    opacity: 1;
    margin-top: 0;
}

.qa-answer-spacer {
    display: block;
    font-size: clamp(10px, 1.5vw, 20px);
    height: 0.8em;
    line-height: 1;
    margin: 0;
    padding: 0;
    visibility: hidden;
}

.qa-answer-inline p {
    margin-bottom: 0.2em;
}

.p04-answers {
    text-align: center;
}

.qa-answer p {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(14px, 2.2vw, 32px);
    color: #30302E;
    line-height: 1.5;
    margin-bottom: 0.2em;
}

.ans-accent {
    font-weight: 900;
    color: #DB6945;
}

.qa-back {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(14px, 2vw, 24px);
    color: #629886;
    margin-top: 40px;
    cursor: pointer;
    display: inline-block;
}

/* ===== P05：进化路径 ===== */
.p05 {
    background-color: #FAF9F5;
    text-align: center;
}

.p05 .section-inner {
    text-align: center;
}

.p05-title {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(28px, 5vw, 56px);
    color: #DB6945;
    margin-bottom: 60px;
}

.p05-group {
    opacity: 0;
}

.p05.animate .p05-group {
    animation: fadeInP05 0.5s ease forwards;
}

.p05.animate .p05-group[data-delay="0"] { animation-delay: 0s; }
.p05.animate .p05-group[data-delay="1"] { animation-delay: 1.5s; }
.p05.animate .p05-group[data-delay="2"] { animation-delay: 3.0s; }
.p05.animate .p05-group[data-delay="3"] { animation-delay: 4.5s; }
.p05.animate .p05-group[data-delay="4"] { animation-delay: 6.0s; }

@keyframes fadeInP05 {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.p05-flow {
    display: grid;
    grid-template-columns: 280px 100px 340px 100px 280px;
    gap: 10px;
    align-items: center;
    justify-content: center;
    justify-items: center;
    margin-bottom: 40px;
}

.p05-desc {
    display: grid;
    grid-template-columns: 280px 100px 340px 100px 280px;
    gap: 10px;
    align-items: start;
    justify-content: center;
    justify-items: center;
    margin-top: 40px;
}

.p05-desc .p05-col:nth-child(1) { grid-column: 1; }
.p05-desc .p05-col:nth-child(2) { grid-column: 3; }
.p05-desc .p05-col:nth-child(3) { grid-column: 5; }

.p05-capsule-side, .p05-capsule-center {
    background-color: #807EB9;
    border-radius: 80px;
    padding: 24px 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    width: 100%;
}

.p05-capsule-side {
    width: 280px;
}

.p05-capsule-center {
    width: 340px;
}

.p05-capsule-side p, .p05-capsule-center p {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(24px, 3.5vw, 48px);
    color: #F0EEE6;
    white-space: nowrap;
    line-height: 1;
    text-align: center;
}

.p05-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    grid-column: span 1;
}

.p05-connector .arrow {
    font-size: clamp(28px, 4vw, 48px);
    color: #629886;
    line-height: 1;
    display: inline-block;
    animation: floatArrowHorizontal 2s ease-in-out infinite;
}

.conn-label {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(12px, 1.5vw, 20px);
    color: #DB6945;
    margin-top: 4px;
    line-height: 1;
}

.p05-connector-desc {
    display: none;
}

.p05-col {
    text-align: center;
}

.p05-col p {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(14px, 2vw, 28px);
    color: #30302E;
    line-height: 1.5;
}

/* ===== P06-1：CTA ===== */
.p06-1 {
    background-color: #FAF9F5;
    text-align: center;
}

.p06-1 .section-inner {
    text-align: center;
}

.p06-1-line1, .p06-1-line2 {
    font-family: 'SourceHanSerif', serif;
    font-size: clamp(20px, 3.5vw, 56px);
    color: #30302E;
    line-height: 1.5;
}

.p06-1-line1 .accent {
    font-weight: 900;
    color: #DB6945;
}

.p06-1-line1 .accent-green {
    font-weight: 900;
    color: #629886;
}

.p06-1-line2 {
    font-weight: 400;
    margin-top: 0.5em;
}

/* ===== P06-2：友情提醒 ===== */
.p06-2 {
    background-color: #CBCADB;
    text-align: center;
}

.p06-2 .section-inner {
    text-align: center;
}

.p06-2-line1 {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(24px, 4vw, 64px);
    color: #807EB9;
    line-height: 1.2;
}

.p06-2-spacer {
    height: clamp(18px, 3.2vw, 48px);
    line-height: 1;
}

.p06-2-line2 {
    font-family: 'SourceHanSerif', serif;
    font-weight: 400;
    font-size: clamp(24px, 4vw, 64px);
    color: #30302E;
    line-height: 1.2;
}

.p06-2-line2 .heavy {
    font-weight: 900;
    color: #30302E;
}

.p06-2-line2 .arrow {
    color: #629886;
}

.p06-2-line2 .accent {
    font-weight: 900;
    color: #DB6945;
}

.p06-2-line3 .accent, .p06-2-line4 .accent {
    font-weight: 200;
    color: #DB6945;
}

.p06-2-line3, .p06-2-line4 {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(18px, 3.2vw, 48px);
    color: #30302E;
    line-height: 1.4;
}

/* ===== P06-3：社群+二维码 ===== */
.p06-3 {
    background-color: #FAF9F5;
    text-align: center;
}

.p06-3 .section-inner {
    text-align: center;
}

.p06-3-line1, .p06-3-line2, .p06-3-line3 {
    font-family: 'SourceHanSerif', serif;
    font-size: clamp(20px, 3.5vw, 56px);
    color: #30302E;
    line-height: 1.5;
}

.p06-3-line1 .heavy {
    font-weight: 900;
    color: #807EB9;
}

.p06-3-line2 .accent {
    font-weight: 900;
    color: #DB6945;
}

.p06-3-line3 .heavy {
    font-weight: 900;
    color: #629886;
}

.qrcode-wrapper {
    margin-top: 60px;
    display: flex;
    justify-content: center;
}

.qrcode-wrapper img {
    width: 200px;
    height: 200px;
    border-radius: 8px;
}

/* ===== 底部 ===== */
.footer {
    background-color: #878671;
    display: flex;
    flex-direction: column;
    scroll-snap-align: start;
    min-height: 100vh;
}

.footer-top {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 60px;
    padding-bottom: 80px;
    max-width: 1400px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.footer-left, .footer-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-left-text, .footer-right-text {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-bar {
    width: 4px;
    height: 72px;
    background-color: #F4DDD5;
    flex-shrink: 0;
}

.footer-left a, .footer-right p {
    font-family: 'SourceHanSerif', serif;
    font-weight: 200;
    font-size: clamp(14px, 2vw, 24px);
    color: #F0EEE6;
    line-height: 1.4;
}

.footer-left a:hover {
    color: #F4DDD5;
}

.footer-sites {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    height: auto;
    min-height: 200px;
}

.footer-site {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    transition: filter 0.3s ease;
    cursor: pointer;
}

.footer-site:hover {
    filter: brightness(1.1);
}

.site-name {
    font-family: 'SourceHanSerif', serif;
    font-weight: 900;
    font-size: clamp(24px, 4.5vw, 72px);
    color: #F0EEE6;
}

/* ===== 动画 ===== */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes floatArrow {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(15px); }
}

/* ===== 响应式：平板 ===== */
@media (max-width: 991px) {
    .section, .nav-container, .hero-content, .footer-top {
        padding-left: 24px;
        padding-right: 24px;
    }
    .section-inner {
        padding-left: 24px;
        padding-right: 24px;
    }
    .data-circles { gap: 30px; }
    .data-circle { width: 320px; height: 320px; }
    .p05-flow { gap: 16px; }
    .p05-desc { gap: 60px; }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 767px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        top: 90px; left: 0;
        width: 100%;
        background-color: #F0EEE6;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s ease;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-menu li { display: block; }
    .nav-menu li a { display: block; padding: 12px 0; }

    .p01-title,
    .p01-subtitle {
        font-size: clamp(22px, 5vw, 36px);
    }
    .p01-desc {
        font-size: clamp(16px, 3.5vw, 28px);
    }
    .p01-item {
        font-size: clamp(14px, 3vw, 24px);
    }
    .p01-spacer {
        height: 0.8em;
    }

    .p02-line1, .p02-line2, .p02-line3, .p02-line4, .p02-line5 {
        font-size: clamp(20px, 4vw, 32px);
    }
    .p02-spacer {
        font-size: clamp(20px, 4vw, 32px);
    }

    .data-circles {
        flex-direction: column;
        gap: 24px;
    }
    .data-circle {
        width: 280px;
        height: 280px;
    }
    .circle-line1, .circle-line2 {
        font-size: clamp(24px, 6vw, 36px);
    }

    .p05-flow { display: flex; flex-direction: column; gap: 0; align-items: center; }
    .p05-connector { 
        display: flex;
        flex-direction: row; 
        align-items: center; 
        justify-content: center;
        padding: 16px 0;
        gap: 8px;
    }
    .p05-connector .arrow {
        font-size: 0;
        animation: none;
    }
    .p05-connector .arrow::after {
        content: '↓';
        font-size: clamp(28px, 4vw, 48px);
        color: #629886;
        display: inline-block;
        animation: floatArrowVertical 2s ease-in-out infinite;
    }
    .p05-connector-desc {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        text-align: right;
    }
    .p05-connector-desc p {
        font-family: 'SourceHanSerif', serif;
        font-weight: 200;
        font-size: clamp(14px, 2.5vw, 20px);
        color: #30302E;
        line-height: 1.5;
    }
    .conn-label {
        font-size: clamp(14px, 3vw, 20px);
        white-space: nowrap;
    }
    .p05-desc { display: flex; flex-direction: column; gap: 0; align-items: center; margin-top: 0; }
    .p05-capsule-side, .p05-capsule-center { width: auto; padding: 16px 32px; }
    .p05-capsule-side { min-width: 200px; }
    .p05-capsule-center { min-width: 260px; }
    .p05-capsule-side p, .p05-capsule-center p { font-size: clamp(28px, 5vw, 48px); }
    .p05-col { width: 100%; max-width: 300px; text-align: center; }
    .p05-col:nth-child(1), .p05-col:nth-child(2) { display: none; }
    .p05-col:nth-child(3) { display: block; }
    .p05-col p { font-size: clamp(14px, 2.5vw, 20px); }
    .p05-capsule-side p, .p05-capsule-center p {
        font-size: clamp(36px, 7vw, 64px);
    }

    .footer-top {
        flex-direction: column;
        justify-content: flex-end;
        gap: 40px;
        padding-top: 40px;
        padding-bottom: 120px;
    }
    .footer-left, .footer-right { align-items: flex-start; width: 100%; padding-left: 20px; }
    .footer-bar { height: 48px; }
    .footer-sites { grid-template-columns: 1fr; min-height: 100px; }
    .footer-site { padding: 16px; }

    .qa-item { font-size: clamp(18px, 5vw, 28px); }
    .qrcode-wrapper img { width: 160px; height: 160px; }
}

/* ===== 响应式：小手机 ===== */
@media (max-width: 480px) {
    .navbar { height: 70px; }
    .nav-logo img { height: 44px; }
    .nav-logo span { font-size: 18px; }

    .p05-capsule-side, .p05-capsule-center {
        padding: 16px 32px;
        min-width: 220px;
    }
    .p05-capsule-center { min-width: 260px; }

    .qrcode-wrapper img { width: 140px; height: 140px; }
}