/* roulang page: index */
/* ============================
   0. 设计变量
============================ */
:root {
    --container: 1280px;
    --pad: 48px;
    --pad-sm: 20px;
    --space: 96px;
    --space-sm: 64px;

    --bg: #FAF7F2;
    --bg-card: #FFFFFF;
    --bg-soft: #F1ECE4;
    --bg-deep: #16141C;

    --primary: #FF4D6D;
    --primary-deep: #E63A58;
    --accent: #6C4AB6;

    --text: #1C1A21;
    --text-2: #5C5966;
    --text-3: #94919E;
    --line: #E6E1D9;
    --white-line: rgba(255,255,255,0.12);

    --radius: 16px;
    --radius-lg: 24px;
    --radius-sm: 8px;
    --radius-pill: 999px;

    --shadow-sm: 0 2px 16px rgba(22,20,28,0.06);
    --shadow-md: 0 8px 32px rgba(22,20,28,0.12);

    --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ============================
   1. 基础 Reset
============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
}
img {
    display: block;
    max-width: 100%;
}
a {
    color: inherit;
    text-decoration: none;
}
ul, ol {
    list-style: none;
}
button {
    font-family: inherit;
    cursor: pointer;
    background: none;
    border: none;
}
input, select, textarea {
    font: inherit;
    color: inherit;
}
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: var(--pad);
    padding-right: var(--pad);
}

/* ============================
   2. 按钮
============================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.2;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-deep);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-primary:active {
    transform: scale(0.98);
}
.btn-outline {
    border: 1px solid var(--text);
    color: var(--text);
    background: transparent;
}
.btn-outline:hover {
    background: var(--text);
    color: var(--bg);
    transform: translateY(-2px);
}
.btn-outline:active {
    transform: scale(0.98);
}
.btn-white {
    background: #fff;
    color: var(--bg-deep);
}
.btn-white:hover {
    background: var(--bg-soft);
    transform: translateY(-2px);
}

/* ============================
   3. 站点导航
============================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 247, 242, 0.92);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}
.header-main {
    max-width: var(--container);
    margin: 0 auto;
    padding: 14px var(--pad);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
    line-height: 1.2;
}
.logo-cn {
    font-size: 1.45rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    color: var(--text);
}
.logo-en {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-3);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}
.search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    color: var(--text-2);
    transition: all 0.2s ease;
}
.search-btn:hover {
    color: var(--primary);
    background: rgba(255, 77, 109, 0.08);
}
.nav-channel {
    border-top: 1px solid var(--line);
}
.nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 10px var(--pad);
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
}
.nav-inner::-webkit-scrollbar {
    display: none;
}
.nav-link {
    flex-shrink: 0;
    padding: 7px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-2);
    transition: all 0.2s ease;
}
.nav-link:hover {
    color: var(--primary);
    background: rgba(255, 77, 109, 0.06);
}
.nav-link.active {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
}

/* ============================
   4. Hero 首屏
============================ */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--bg);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.7;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(250, 247, 242, 0.96) 0%, rgba(250, 247, 242, 0.82) 50%, rgba(250, 247, 242, 0.45) 100%);
}
.hero-letter {
    position: absolute;
    right: -30px;
    bottom: -40px;
    font-size: 15vw;
    font-weight: 900;
    line-height: 1;
    color: rgba(22, 20, 28, 0.05);
    letter-spacing: -0.04em;
    pointer-events: none;
    z-index: 1;
    font-family: "DIN Alternate", "Arial Narrow", var(--font);
}
.hero-inner {
    position: relative;
    z-index: 2;
    max-width: var(--container);
    margin: 0 auto;
    padding: 80px var(--pad) 72px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
}
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}
.hero-tag {
    display: inline-block;
    padding: 5px 16px;
    border-radius: var(--radius-pill);
    background: rgba(108, 74, 182, 0.12);
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}
.hero-brand {
    display: block;
    color: var(--text);
}
.hero-tagline {
    display: block;
    color: var(--primary);
}
.hero-sub {
    font-size: 1.05rem;
    color: var(--text-2);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.8;
}
.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 44px;
}
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 36px;
}
.hero-stat strong {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
}
.hero-stat span {
    font-size: 0.88rem;
    color: var(--text-3);
}
.hero-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transform: rotate(1.2deg);
    transition: transform 0.3s ease;
}
.hero-card:hover {
    transform: rotate(0deg) translateY(-4px);
}
.hero-card img {
    width: 100%;
    height: 460px;
    object-fit: cover;
}
.hero-card-info {
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 16px;
    background: rgba(22, 20, 28, 0.78);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 14px 18px;
    color: #fff;
    border: 1px solid var(--white-line);
}
.hero-card-tag {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 2px 10px;
    margin-bottom: 6px;
}
.hero-card-title {
    font-size: 1.05rem;
    font-weight: 700;
}
.hero-card-meta {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 2px;
}

/* ============================
   5. 通用区块
============================ */
.section {
    padding: var(--space) 0;
}
.section-head {
    max-width: var(--container);
    margin: 0 auto var(--space-sm) auto;
    padding: 0 var(--pad);
}
.sec-num {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--primary);
    margin-bottom: 10px;
}
.section-head h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.section-head p {
    color: var(--text-2);
    max-width: 600px;
    font-size: 1rem;
}
.section-head.light h2,
.section-head.light p,
.section-head.light .sec-num {
    color: #fff;
}
.section-head.light .sec-num {
    color: var(--primary);
}

/* ============================
   6. 核心栏目 01
============================ */
.features {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}
.feature-grid {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}
.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 36px 32px 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(230, 225, 217, 0.6);
    transition: all 0.25s ease;
}
.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.feature-card.feature-main {
    transform: translateY(20px) scale(1.02);
    border-top: 4px solid var(--primary);
}
.feature-card.feature-main:hover {
    transform: translateY(12px) scale(1.02);
}
.feature-num {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    color: var(--primary);
    margin-bottom: 14px;
    display: block;
}
.feature-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.feature-card > p {
    color: var(--text-2);
    font-size: 0.95rem;
    line-height: 1.75;
    margin-bottom: 18px;
    min-height: 64px;
}
.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}
.tag {
    display: inline-block;
    padding: 4px 13px;
    border-radius: var(--radius-pill);
    background: rgba(108, 74, 182, 0.1);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
}
.tag:hover {
    background: rgba(255, 77, 109, 0.1);
    color: var(--primary);
}
.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text);
    transition: color 0.2s ease;
}
.feature-link:hover {
    color: var(--primary);
}

/* ============================
   7. 数据区块
============================ */
.data-section {
    background: var(--bg-deep);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.data-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-4.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.12;
}
.data-wrap {
    position: relative;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: end;
}
.data-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.data-item strong {
    display: block;
    font-size: clamp(3rem, 8vw, 4.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: #fff;
    font-family: "DIN Alternate", "Arial Narrow", var(--font);
}
.data-item span {
    display: block;
    margin-top: 6px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.92rem;
}
.data-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.45);
    margin-top: 18px;
    line-height: 1.6;
}
.data-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}
.data-tag {
    padding: 7px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--white-line);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.84rem;
    font-weight: 500;
    transition: all 0.2s ease;
}
.data-tag:hover {
    border-color: var(--primary);
    color: #fff;
    background: rgba(255, 77, 109, 0.12);
}

/* ============================
   8. 案例/新面孔展示
============================ */
.showcase {
    background: var(--bg);
}
.showcase-grid {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
    display: grid;
    grid-template-columns: 1.1fr 0.9fr 0.8fr;
    grid-template-rows: 250px 250px;
    gap: 20px;
}
.showcase-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}
.showcase-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.showcase-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(22, 20, 28, 0) 35%, rgba(22, 20, 28, 0.6) 100%);
    opacity: 0.75;
    transition: opacity 0.3s ease;
}
.showcase-card:hover::after {
    opacity: 0.9;
}
.showcase-card:hover img {
    transform: scale(1.05);
}
.showcard-body {
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 14px;
    z-index: 2;
    color: #fff;
}
.showcard-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: var(--primary);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 7px;
}
.showcard-title {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 4px;
}
.showcard-desc {
    font-size: 0.86rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
}
.showcard-meta {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 6px;
}
.showcase-card-main {
    grid-column: 1;
    grid-row: 1 / 3;
}
.showcase-card-wide {
    grid-column: 2;
    grid-row: 2;
}
.showcase-card-small {
    grid-row: 1;
}
.showcase-card-small:nth-of-type(2) {
    grid-column: 2;
    grid-row: 1;
}
.showcase-card-small:nth-of-type(3) {
    grid-column: 3;
    grid-row: 1;
}
.showcase-card-small:nth-of-type(4) {
    grid-column: 3;
    grid-row: 2;
}

/* ============================
   9. 方案区
============================ */
.plans {
    background: var(--bg-soft);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.plan-list {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
}
.plan-row {
    display: grid;
    grid-template-columns: 1.1fr 1.6fr 0.8fr;
    gap: 32px;
    align-items: center;
    padding: 34px 16px;
    border-bottom: 1px solid var(--line);
    transition: background 0.2s ease;
}
.plan-row:first-child {
    padding-top: 8px;
}
.plan-row:last-child {
    border-bottom: none;
}
.plan-row:hover {
    background: rgba(255, 255, 255, 0.6);
}
.plan-left {
    display: flex;
    align-items: baseline;
    gap: 18px;
}
.plan-index {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    font-family: "DIN Alternate", "Arial Narrow", var(--font);
}
.plan-name {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
}
.plan-scene {
    font-size: 0.9rem;
    color: var(--text-3);
    margin-top: 4px;
}
.plan-middle {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
}
.plan-list-item {
    position: relative;
    padding-left: 16px;
    font-size: 0.92rem;
    color: var(--text-2);
}
.plan-list-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.plan-right {
    text-align: right;
}
.plan-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    transition: color 0.2s ease;
}
.plan-link:hover {
    color: var(--primary);
}

/* ============================
   10. FAQ 区块
============================ */
.faq-section {
    background: var(--bg);
}
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 var(--pad);
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}
.faq-item:hover {
    box-shadow: var(--shadow-sm);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    color: var(--text);
    transition: color 0.2s ease;
}
.faq-question:hover {
    color: var(--primary);
}
.faq-icon {
    position: relative;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
    content: "";
    position: absolute;
    background: var(--primary);
    border-radius: 2px;
    transition: transform 0.25s ease;
}
.faq-icon::before {
    width: 14px;
    height: 2px;
    top: 11px;
    left: 5px;
}
.faq-icon::after {
    width: 2px;
    height: 14px;
    top: 5px;
    left: 11px;
}
.faq-item.open .faq-icon::after {
    transform: rotate(90deg);
    opacity: 0;
}
.faq-item.open .faq-icon::before {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-2);
    font-size: 0.95rem;
    line-height: 1.8;
    border-top: 0 solid var(--line);
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 4px 24px 20px;
    border-top-width: 1px;
}

/* ============================
   11. 联系/关注区块
============================ */
.contact {
    background: var(--bg);
    border-top: 1px solid var(--line);
}
.contact-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 56px;
}
.contact-left h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
}
.contact-intro {
    color: var(--text-2);
    margin-bottom: 28px;
    max-width: 400px;
}
.contact-methods {
    margin-bottom: 30px;
}
.contact-method {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 0;
    font-size: 0.95rem;
    color: var(--text-2);
}
.contact-method strong {
    color: var(--text);
    font-weight: 600;
    min-width: 64px;
}
.social-list {
    display: flex;
    gap: 12px;
}
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-soft);
    color: var(--text-2);
    font-size: 0.95rem;
    font-weight: 700;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}
.social-icon:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}
.contact-right {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
}
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}
.form-group.full {
    grid-column: 1 / -1;
}
.form-group label {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-2);
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg);
    transition: all 0.2s ease;
}
.form-group textarea {
    resize: vertical;
    min-height: 110px;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.12);
    background: #fff;
}
.form-submit {
    grid-column: 1 / -1;
    margin-top: 4px;
}
.form-note {
    grid-column: 1 / -1;
    font-size: 0.82rem;
    color: var(--text-3);
    margin-top: 4px;
}

/* ============================
   12. 页脚
============================ */
.site-footer {
    background: var(--bg-deep);
    color: #fff;
    padding: 72px 0 36px;
}
.footer-top {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--pad);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--white-line);
}
.footer-logo .logo-cn {
    color: #fff;
}
.footer-logo .logo-en {
    color: rgba(255, 255, 255, 0.5);
}
.footer-statement {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.92rem;
    max-width: 300px;
    margin-top: 10px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social .social-icon {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--white-line);
}
.footer-social .social-icon:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.footer-links {
    max-width: var(--container);
    margin: 0 auto;
    padding: 36px var(--pad) 30px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.footer-col h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 14px;
    letter-spacing: 0.04em;
}
.footer-col a {
    display: block;
    padding: 5px 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.55);
    transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-col a:hover {
    color: var(--primary);
    padding-left: 4px;
}
.footer-bottom {
    max-width: var(--container);
    margin: 0 auto;
    padding: 28px var(--pad) 0;
    border-top: 1px solid var(--white-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.4);
}
.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s ease;
}
.footer-bottom a:hover {
    color: var(--primary);
}

/* ============================
   13. 响应式
============================ */
@media (max-width: 1024px) {
    :root {
        --pad: 32px;
        --space: 80px;
    }
    .hero-inner {
        grid-template-columns: 1fr;
        padding: 56px 32px 56px;
    }
    .hero-card {
        max-width: 420px;
    }
    .hero-card img {
        height: 380px;
    }
    .feature-grid {
        gap: 16px;
    }
    .feature-card.feature-main {
        transform: translateY(10px);
    }
    .data-wrap {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .data-tags {
        justify-content: flex-start;
    }
    .showcase-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }
    .showcase-card-main {
        grid-column: 1 / 2;
        grid-row: 1 / 3;
        min-height: 420px;
    }
    .showcase-card-small:nth-of-type(2) {
        grid-column: 2;
        grid-row: 1;
    }
    .showcase-card-small:nth-of-type(3) {
        grid-column: 2;
        grid-row: 2;
    }
    .showcase-card-wide {
        grid-column: 1 / 3;
        grid-row: 3;
        min-height: 200px;
    }
    .showcase-card-small:nth-of-type(4) {
        grid-column: 2;
        grid-row: auto;
        display: none;
    }
    .plan-row {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 28px 8px;
    }
    .plan-right {
        text-align: left;
    }
    .contact-inner {
        grid-template-columns: 1fr;
    }
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --pad: 20px;
        --space-sm: 48px;
        --space: 64px;
    }
    .header-main {
        padding: 12px var(--pad-sm);
    }
    .logo-cn {
        font-size: 1.25rem;
    }
    .header-actions .btn {
        padding: 9px 18px;
        font-size: 0.85rem;
    }
    .nav-inner {
        padding: 8px var(--pad-sm);
    }
    .hero-inner {
        padding: 48px 20px 48px;
    }
    .hero h1 {
        font-size: clamp(2rem, 9vw, 2.6rem);
    }
    .hero-sub {
        font-size: 0.95rem;
    }
    .hero-stats {
        gap: 24px;
    }
    .hero-stat strong {
        font-size: 1.35rem;
    }
    .hero-card img {
        height: 320px;
    }
    .section {
        padding: var(--space) 0;
    }
    .section-head {
        margin-bottom: 40px;
        padding: 0 var(--pad-sm);
    }
    .feature-grid {
        grid-template-columns: 1fr;
        padding: 0 var(--pad-sm);
    }
    .feature-card.feature-main {
        transform: none;
    }
    .feature-card.feature-main:hover {
        transform: translateY(-4px);
    }
    .data-wrap {
        padding: 0 var(--pad-sm);
    }
    .data-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .data-tags {
        gap: 8px;
    }
    .showcase-grid {
        grid-template-columns: 1fr;
        padding: 0 var(--pad-sm);
        gap: 16px;
    }
    .showcase-card-main {
        grid-column: 1;
        grid-row: auto;
        min-height: 320px;
    }
    .showcase-card-small:nth-of-type(2),
    .showcase-card-small:nth-of-type(3),
    .showcase-card-wide {
        grid-column: 1;
        grid-row: auto;
        min-height: 200px;
    }
    .plan-list {
        padding: 0 var(--pad-sm);
    }
    .plan-row {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .faq-list {
        padding: 0 var(--pad-sm);
    }
    .faq-question {
        padding: 16px 18px;
        font-size: 0.98rem;
    }
    .faq-answer {
        padding: 0 18px;
    }
    .faq-item.open .faq-answer {
        padding: 4px 18px 16px;
    }
    .contact-inner {
        padding: 0 var(--pad-sm);
        gap: 40px;
    }
    .contact-right {
        padding: 24px 20px;
    }
    .contact-form {
        grid-template-columns: 1fr;
    }
    .footer-top {
        padding: 0 var(--pad-sm) 32px;
    }
    .footer-links {
        padding: 28px var(--pad-sm) 24px;
        grid-template-columns: 1fr 1fr;
    }
    .footer-bottom {
        padding: 20px var(--pad-sm) 0;
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 520px) {
    .header-actions .btn span {
        display: none;
    }
    .header-actions .btn {
        padding: 9px 15px;
    }
    .hero-tagline {
        font-size: 0.62em;
    }
    .hero-sub {
        margin-bottom: 24px;
    }
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-cta .btn {
        width: 100%;
    }
    .hero-stats {
        flex-direction: column;
        gap: 14px;
    }
    .hero-stat strong,
    .hero-stat span {
        display: inline;
    }
    .showcase-card-main {
        min-height: 260px;
    }
    .showcase-card-wide {
        min-height: 180px;
    }
    .showcard-desc {
        font-size: 0.82rem;
    }
    .data-item strong {
        font-size: 3rem;
    }
    .footer-links {
        grid-template-columns: 1fr;
    }
    .contact-method {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

/* roulang page: category1 */
/* ============================================
   0. 设计变量
============================================ */
:root {
  --container: 1280px;
  --pad: 48px;
  --pad-sm: 20px;
  --space: 96px;
  --space-sm: 64px;

  --bg: #faf7f2;
  --bg-card: #ffffff;
  --bg-soft: #f1ece4;
  --bg-deep: #16141c;

  --primary: #ff4d6d;
  --primary-deep: #e63a58;
  --accent: #6c4ab6;

  --text: #1c1a21;
  --text-2: #5c5966;
  --text-3: #94919e;
  --line: #e6e1d9;
  --white-line: rgba(255,255,255,0.12);

  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 16px rgba(22,20,28,0.06);
  --shadow-md: 0 8px 32px rgba(22,20,28,0.12);

  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ============================================
   1. 基础 reset
============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; }
input, select, textarea { font: inherit; color: inherit; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* ============================================
   2. 按钮
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline { border: 1px solid var(--text); color: var(--text); background: transparent; }
.btn-outline:hover { background: var(--text); color: var(--bg); transform: translateY(-2px); }
.btn-outline:active { transform: scale(0.98); }
.btn-white { background: #fff; color: var(--bg-deep); }
.btn-white:hover { background: var(--bg-soft); transform: translateY(-2px); }

/* ============================================
   3. 站点导航
============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo { display: flex; align-items: baseline; gap: 8px; line-height: 1.2; }
.logo-cn { font-size: 1.45rem; font-weight: 900; letter-spacing: 0.02em; color: var(--text); }
.logo-en { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-3); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.search-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  color: var(--text-2); transition: all 0.2s ease;
}
.search-btn:hover { color: var(--primary); background: rgba(255, 77, 109, 0.08); }
.nav-channel { border-top: 1px solid var(--line); }
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 10px var(--pad);
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-inner::-webkit-scrollbar { display: none; }
.nav-link {
  flex-shrink: 0;
  padding: 7px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all 0.2s ease;
}
.nav-link:hover { color: var(--primary); background: rgba(255, 77, 109, 0.06); }
.nav-link.active { background: var(--primary); color: #fff; font-weight: 600; }

/* ============================================
   4. 分类页频道头
============================================ */
.channel-hero {
  position: relative;
  background: var(--bg-deep);
  overflow: hidden;
}
.channel-hero-bg {
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-3.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.channel-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(22,20,28,0.42) 0%, rgba(22,20,28,0.15) 60%, rgba(22,20,28,0.1) 100%);
}
.channel-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 80px var(--pad) 56px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}
.channel-hero .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 77, 109, 0.18);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.channel-hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.channel-hero h1 .dot { color: var(--primary); }
.channel-hero p {
  max-width: 560px;
  color: rgba(255,255,255,0.82);
  font-size: 1rem;
  line-height: 1.8;
}
.channel-hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: flex-end;
}
.channel-hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.16);
}
.channel-hero-stats .stat { display: flex; flex-direction: column; }
.channel-hero-stats .stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.channel-hero-stats .stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.56);
  margin-top: 4px;
}

/* ============================================
   5. 标签筛选行
============================================ */
.channel-tabs {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 110px;
  z-index: 50;
}
.tabs-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--pad);
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs-inner::-webkit-scrollbar { display: none; }
.tab-pill {
  flex-shrink: 0;
  padding: 7px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-2);
  background: transparent;
  border: 1px solid var(--line);
  transition: all 0.2s ease;
}
.tab-pill:hover { color: var(--primary); border-color: var(--primary); background: rgba(255,77,109,0.04); }
.tab-pill.active { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 600; }

/* ============================================
   6. 头条内容区
============================================ */
.featured-section {
  padding: var(--space) 0;
}
.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
}
.featured-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.featured-main:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.featured-main .thumb { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
.featured-main .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.featured-main:hover .thumb img { transform: scale(1.05); }
.featured-main .body { padding: 28px 32px 32px; }
.featured-main .tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(108, 74, 182, 0.12);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.featured-main h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}
.featured-main .desc { color: var(--text-2); font-size: 0.95rem; margin-bottom: 16px; line-height: 1.7; }
.featured-meta { display: flex; gap: 20px; font-size: 0.82rem; color: var(--text-3); }
.featured-side { display: flex; flex-direction: column; gap: 24px; }
.featured-side-item {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}
.featured-side-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.featured-side-item .thumb {
  width: 92px; height: 92px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}
.featured-side-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.featured-side-item .info { display: flex; flex-direction: column; justify-content: center; }
.featured-side-item .tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}
.featured-side-item h3 { font-size: 0.95rem; font-weight: 600; line-height: 1.45; }
.featured-side-item .meta { font-size: 0.76rem; color: var(--text-3); margin-top: 6px; }

/* ============================================
   7. 频道价值区
============================================ */
.values-section {
  background: var(--bg-deep);
  padding: var(--space) 0;
  position: relative;
  overflow: hidden;
}
.values-section::before {
  content: "MODEL";
  position: absolute;
  right: -20px;
  bottom: -30px;
  font-size: 12vw;
  font-weight: 900;
  line-height: 1;
  color: rgba(255,255,255,0.03);
  letter-spacing: -0.04em;
  font-family: "DIN Alternate", "Arial Narrow", var(--font);
  pointer-events: none;
}
.values-head { margin-bottom: 48px; }
.values-head .section-kicker {
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.values-head h2 {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
}
.values-head p { color: rgba(255,255,255,0.55); margin-top: 10px; font-size: 0.95rem; }
.values-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 24px;
  position: relative;
  z-index: 2;
}
.value-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--white-line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.value-card:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,77,109,0.4); transform: translateY(-4px); }
.value-card .num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 18px;
  font-family: "DIN Alternate", "Arial Narrow", var(--font);
}
.value-card h3 { color: #fff; font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.value-card p { color: rgba(255,255,255,0.62); font-size: 0.9rem; line-height: 1.7; }
.value-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.value-card .tag {
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,77,109,0.16);
  color: #ff8ba0;
  font-size: 0.76rem;
  font-weight: 500;
}

/* ============================================
   8. 内容列表区
============================================ */
.list-section { padding: var(--space) 0 32px; }
.list-section .section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}
.list-section .section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
.list-section .section-head p { color: var(--text-2); font-size: 0.95rem; max-width: 440px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}
.content-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.content-card .thumb { overflow: hidden; aspect-ratio: 4 / 3; position: relative; }
.content-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.content-card:hover .thumb img { transform: scale(1.05); }
.content-card .badge {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(22,20,28,0.82);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.content-card .body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.content-card .card-tag {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.content-card h3 { font-size: 1.08rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.content-card p { color: var(--text-2); font-size: 0.88rem; line-height: 1.6; flex: 1; }
.content-card .meta { display: flex; gap: 16px; font-size: 0.78rem; color: var(--text-3); margin-top: 14px; }

/* 编号列表 */
.numbered-list { margin-bottom: 48px; }
.numbered-item {
  display: grid;
  grid-template-columns: 88px 1fr 100px;
  gap: 24px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}
.numbered-item:first-child { border-top: 1px solid var(--line); }
.numbered-item:hover { background: rgba(255,77,109,0.02); }
.numbered-item .num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--line);
  line-height: 1;
  font-family: "DIN Alternate", "Arial Narrow", var(--font);
  transition: color 0.2s ease;
}
.numbered-item:hover .num { color: var(--primary); }
.numbered-item .info h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.numbered-item .info p { color: var(--text-2); font-size: 0.88rem; line-height: 1.6; max-width: 620px; }
.numbered-item .info .meta { font-size: 0.76rem; color: var(--text-3); margin-top: 6px; }
.numbered-item .thumb {
  width: 100px; height: 72px;
  border-radius: 10px;
  overflow: hidden;
  justify-self: end;
}
.numbered-item .thumb img { width: 100%; height: 100%; object-fit: cover; }

/* 横幅卡 */
.banner-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-deep);
  padding: 48px 40px;
  margin: 48px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.banner-card::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-6.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}
.banner-card .content { position: relative; z-index: 2; }
.banner-card h3 { color: #fff; font-size: clamp(1.2rem, 2.4vw, 1.7rem); font-weight: 700; margin-bottom: 8px; }
.banner-card p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }
.banner-card .btn { position: relative; z-index: 2; flex-shrink: 0; }

/* 加载更多 */
.load-more-wrap { text-align: center; padding: 20px 0 60px; }

/* ============================================
   9. 流程区
============================================ */
.process-section { background: var(--bg-soft); padding: var(--space) 0; }
.process-section .section-head { text-align: center; margin-bottom: 56px; }
.process-section .section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
.process-section .section-head p { color: var(--text-2); font-size: 0.95rem; margin-top: 8px; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 980px;
  margin: 0 auto;
}
.process-step {
  text-align: center;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  position: relative;
}
.process-step:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.process-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 18px;
}
.process-step .step-arrow {
  position: absolute;
  top: 44px;
  right: -18px;
  color: var(--line);
  font-size: 1.5rem;
  z-index: 2;
}
.process-step h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.process-step p { color: var(--text-2); font-size: 0.9rem; line-height: 1.7; }

/* ============================================
   10. FAQ
============================================ */
.faq-section { padding: var(--space) 0; }
.faq-section .section-head { margin-bottom: 40px; }
.faq-section .section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
.faq-section .section-head p { color: var(--text-2); font-size: 0.95rem; margin-top: 8px; }
.faq-list { max-width: 800px; }
.faq-item {
  border-bottom: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: 0 0 12px 12px;
}
.faq-item:first-child { border-top: 1px solid var(--line); border-radius: 12px 12px 0 0; }
.faq-item + .faq-item { border-top: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-2);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-answer { max-height: 200px; }
.faq-answer-inner {
  padding: 0 24px 22px;
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.75;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.faq-answer-inner ol { padding-left: 18px; margin-top: 6px; }
.faq-answer-inner ol li + li { margin-top: 4px; }

/* ============================================
   11. 底部 CTA
============================================ */
.bottom-cta {
  background: var(--bg);
  padding: 80px var(--pad);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.bottom-cta::before {
  content: "NEW MODEL";
  position: absolute;
  left: 50%;
  top: -10px;
  transform: translateX(-50%);
  font-size: 7vw;
  font-weight: 900;
  color: rgba(22,20,28,0.04);
  line-height: 1;
  letter-spacing: -0.03em;
  pointer-events: none;
  font-family: "DIN Alternate", "Arial Narrow", var(--font);
}
.cta-inner { position: relative; z-index: 2; }
.bottom-cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}
.bottom-cta p { color: var(--text-2); font-size: 0.98rem; margin-bottom: 32px; }
.cta-btn-wrap { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================
   12. 页脚
============================================ */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.8);
  padding: 72px 0 0;
}
.footer-top {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad) 48px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--white-line);
}
.footer-logo .logo-cn { color: #fff; }
.footer-logo .logo-en { color: rgba(255,255,255,0.4); }
.footer-statement { margin-top: 14px; font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 340px; line-height: 1.7; }
.footer-social { display: flex; gap: 12px; }
.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.16);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
}
.social-icon:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-body {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px var(--pad);
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-col h4 { color: #fff; font-size: 0.92rem; font-weight: 600; margin-bottom: 18px; }
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.5);
  font-size: 0.86rem;
  padding: 5px 0;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px var(--pad);
  border-top: 1px solid var(--white-line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: rgba(255,255,255,0.36);
  font-size: 0.8rem;
}

/* ============================================
   13. 响应式断点
============================================ */
@media (max-width: 1024px) {
  :root { --pad: 32px; --space: 80px; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .value-card:last-child { grid-column: 1 / -1; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-side { flex-direction: row; }
  .featured-side-item { flex: 1; }
  .footer-body { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --pad: 20px; --space-sm: 48px; --space: 64px; }
  .header-main { padding: 12px var(--pad); }
  .logo-en { display: none; }
  .nav-inner { padding: 8px var(--pad); }
  .channel-hero-inner { grid-template-columns: 1fr; gap: 28px; }
  .channel-hero-actions { justify-content: flex-start; }
  .channel-hero-stats { flex-wrap: wrap; gap: 20px; }
  .channel-tabs { top: 92px; }
  .card-grid { grid-template-columns: 1fr; }
  .numbered-item { grid-template-columns: 56px 1fr; gap: 16px; }
  .numbered-item .thumb { display: none; }
  .process-grid { grid-template-columns: 1fr; gap: 20px; }
  .process-step .step-arrow { display: none; }
  .banner-card { flex-direction: column; text-align: center; padding: 40px 24px; }
  .footer-top { flex-direction: column; }
  .footer-body { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .featured-side { flex-direction: column; }
}

@media (max-width: 520px) {
  .header-actions .btn { padding: 10px 18px; font-size: 0.85rem; }
  .channel-hero-inner { padding-top: 56px; padding-bottom: 40px; }
  .channel-hero h1 { font-size: 1.9rem; }
  .values-grid { grid-template-columns: 1fr; }
  .value-card:last-child { grid-column: auto; }
  .numbered-item { grid-template-columns: 40px 1fr; }
  .numbered-item .num { font-size: 2rem; }
  .btn { padding: 10px 20px; font-size: 0.9rem; }
  .cta-btn-wrap { flex-direction: column; align-items: center; }
  .cta-btn-wrap .btn { width: 100%; max-width: 280px; }
}