/* =========================================================
   花屿AI · 全局样式
   主色：#FF8DBA → #E94B92（粉色渐变 / 玫瑰粉）
   风格：温暖、梦幻、文艺
   ========================================================= */

/* ---------- CSS 变量（主题） ---------- */
:root {
    --color-primary-from: #FF8DBA;
    --color-primary-to: #E94B92;
    --color-accent: #FFB088;
    --color-bg: #FFF8F4;
    --color-card: #FFFFFF;
    --color-text: #2A1722;
    --color-text-soft: #6E5862;
    --color-divider: #FCE3EE;
    --color-footer: #2A0E1F;

    --gradient-hero: linear-gradient(135deg, #FFE0EC 0%, #FFEDF3 50%, #FFE8DD 100%);
    --gradient-brand: linear-gradient(90deg, #FF8DBA, #E94B92);
    --gradient-brand-soft: linear-gradient(135deg, rgba(255,141,186,.12), rgba(233,75,146,.12));

    --shadow-sm: 0 4px 12px rgba(42, 23, 34, .06);
    --shadow-md: 0 8px 24px rgba(42, 23, 34, .08);
    --shadow-cta: 0 8px 24px rgba(233, 75, 146, .35);
    --shadow-cta-hover: 0 12px 32px rgba(233, 75, 146, .45);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;

    --font-zh: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;

    --container-max: 1200px;
    --header-height: 72px;
}

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

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

body {
    font-family: var(--font-zh);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease;
}

a:hover { color: var(--color-primary-to); }

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

button { font-family: inherit; cursor: pointer; border: none; background: transparent; }

ul { list-style: none; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 15px;
    transition: all .3s ease;
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-brand);
    color: #fff;
    box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-cta-hover);
    color: #fff;
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: #fff;
    color: var(--color-text);
    border: 1.5px solid var(--color-divider);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    border-color: var(--color-primary-to);
    color: var(--color-primary-to);
    transform: translateY(-2px);
}

.btn-sm { padding: 10px 22px; font-size: 14px; }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 248, 244, .85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid rgba(242, 230, 240, .6);
}

.nav-wrap {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: .5px;
}

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

.nav-menu li a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    transition: all .25s ease;
}

.nav-menu li a:hover {
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
}

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

/* ---------- 语言切换器 ---------- */
.lang-switch {
    position: relative;
}

.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    background: #fff;
    border: 1px solid var(--color-divider);
    transition: all .25s ease;
}

.lang-toggle:hover {
    border-color: var(--color-primary-to);
    color: var(--color-primary-to);
}

.lang-toggle .fa-chevron-down { font-size: 11px; transition: transform .2s; }
.lang-switch.open .lang-toggle .fa-chevron-down { transform: rotate(180deg); }

.lang-dropdown {
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px;
    min-width: 180px;
    border: 1px solid var(--color-divider);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: all .25s ease;
    z-index: 110;
}

.lang-switch.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown li a {
    display: block;
    padding: 9px 14px;
    font-size: 14px;
    border-radius: var(--radius-sm);
    color: var(--color-text);
}

.lang-dropdown li a:hover {
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
}

.lang-dropdown li a.active {
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
    font-weight: 600;
}

/* ---------- 移动端菜单按钮 ---------- */
.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--color-text);
    border-radius: 10px;
}

.menu-toggle:hover { background: var(--gradient-brand-soft); }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: 80px 0 100px;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .55;
    pointer-events: none;
}

.hero::before {
    width: 360px;
    height: 360px;
    background: #FFB6D5;
    top: -100px;
    left: -80px;
}

.hero::after {
    width: 420px;
    height: 420px;
    background: #FFD4C2;
    bottom: -160px;
    right: -100px;
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: 60px;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: #fff;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary-to);
    box-shadow: var(--shadow-sm);
    margin-bottom: 22px;
}

.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.18;
    margin-bottom: 22px;
    letter-spacing: -.5px;
}

.hero-title .accent {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-title .brush {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-sub {
    font-size: 18px;
    color: var(--color-text-soft);
    margin-bottom: 36px;
    max-width: 560px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    color: var(--color-text-soft);
    font-size: 14px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-meta i { color: var(--color-primary-to); }

/* ---------- Hero 视觉：浮动卡片 ---------- */
.hero-visual {
    position: relative;
    height: 460px;
}

.float-card {
    position: absolute;
    background: #fff;
    border-radius: var(--radius-md);
    padding: 16px 18px;
    box-shadow: var(--shadow-md);
    width: 240px;
    border: 1px solid var(--color-divider);
    animation: float 6s ease-in-out infinite;
}

.float-card .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    margin-bottom: 10px;
}

.float-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.float-card p {
    font-size: 12.5px;
    color: var(--color-text-soft);
    line-height: 1.55;
}

.float-card .tags {
    margin-top: 10px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.float-card .tags span {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
}

.float-card.fc-1 { top: 10px; left: 30px; animation-delay: 0s; }
.float-card.fc-2 { top: 130px; right: 10px; animation-delay: -2s; }
.float-card.fc-3 { bottom: 30px; left: 80px; animation-delay: -4s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* 装饰花瓣 SVG */
.petal {
    position: absolute;
    pointer-events: none;
    opacity: .8;
    animation: petalFloat 9s ease-in-out infinite;
}

.petal.p1 { top: 8%; right: 38%; animation-delay: 0s; }
.petal.p2 { top: 60%; right: 6%; animation-delay: -3s; }
.petal.p3 { bottom: 8%; left: 5%; animation-delay: -6s; }

@keyframes petalFloat {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-22px) rotate(18deg); }
}

/* ---------- 通用区块 ---------- */
.section {
    padding: 96px 0;
    position: relative;
}

.section-soft { background: var(--color-card); }

.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(28px, 3.6vw, 40px);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -.3px;
}

.section-sub {
    color: var(--color-text-soft);
    font-size: 17px;
}

/* ---------- 核心特色 Features ---------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    border: 1px solid var(--color-divider);
    box-shadow: var(--shadow-sm);
    transition: all .35s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .4s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(233, 75, 146, .25);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--gradient-brand-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-primary-to);
    margin-bottom: 18px;
    transition: all .35s ease;
}

.feature-card:hover .feature-icon {
    background: var(--gradient-brand);
    color: #fff;
    transform: rotate(-6deg) scale(1.05);
}

.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--color-text-soft);
    font-size: 15px;
    line-height: 1.75;
}

/* ---------- 使用场景 Scenes ---------- */
.scenes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.scene-card {
    background: var(--gradient-brand-soft);
    border-radius: var(--radius-md);
    padding: 28px 22px;
    text-align: center;
    transition: all .35s ease;
    border: 1px solid transparent;
}

.scene-card:hover {
    transform: translateY(-4px);
    background: #fff;
    border-color: rgba(233, 75, 146, .25);
    box-shadow: var(--shadow-md);
}

.scene-card .scene-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--color-primary-to);
    box-shadow: var(--shadow-sm);
}

.scene-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.scene-card p {
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
}

/* ---------- 角色画廊 Gallery ---------- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.gallery-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-divider);
    box-shadow: var(--shadow-sm);
    transition: all .35s ease;
    cursor: pointer;
}

.gallery-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.gallery-cover {
    height: 180px;
    background: var(--gradient-brand);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.gallery-cover .icon-bg {
    font-size: 78px;
    color: rgba(255, 255, 255, .85);
    transition: transform .5s ease;
}

.gallery-card:hover .icon-bg { transform: scale(1.1) rotate(-6deg); }

.gallery-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top, rgba(255,255,255,.25), transparent 60%);
}

/* 不同卡片的封面色调差异（粉色系） */
.gallery-card:nth-child(2) .gallery-cover { background: linear-gradient(135deg, #FFB6D5, #FF9ECB); }
.gallery-card:nth-child(3) .gallery-cover { background: linear-gradient(135deg, #FFA8CC, #ED4F95); }
.gallery-card:nth-child(4) .gallery-cover { background: linear-gradient(135deg, #FFB088, #FF8FA6); }
.gallery-card:nth-child(5) .gallery-cover { background: linear-gradient(135deg, #FFD6E2, #FF94BC); }
.gallery-card:nth-child(6) .gallery-cover { background: linear-gradient(135deg, #FFCBA0, #FFA9C2); }

.gallery-body {
    padding: 20px;
}

.gallery-body h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.gallery-body p {
    color: var(--color-text-soft);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 14px;
    min-height: 48px;
}

.gallery-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.gallery-tags span {
    font-size: 12px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
}

/* ---------- 平台数据 Stats ---------- */
.stats {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.stat-card {
    text-align: center;
    background: rgba(255, 255, 255, .65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    padding: 36px 20px;
    border: 1px solid rgba(255, 255, 255, .8);
    box-shadow: var(--shadow-sm);
}

.stat-num {
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--color-text-soft);
    font-size: 15px;
}

/* ---------- 用户评价 Testimonials ---------- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 28px;
    border: 1px solid var(--color-divider);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all .3s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial-card .quote-mark {
    position: absolute;
    top: 18px;
    right: 22px;
    font-size: 44px;
    color: rgba(233, 75, 146, .15);
    font-family: serif;
    line-height: 1;
}

.testimonial-card .stars {
    color: #FFB088;
    margin-bottom: 12px;
    font-size: 14px;
}

.testimonial-card .quote {
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 22px;
    font-size: 15px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-author .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 16px;
}

.testimonial-author h4 {
    font-size: 15px;
    font-weight: 700;
}

.testimonial-author span {
    font-size: 13px;
    color: var(--color-text-soft);
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-divider);
    overflow: hidden;
    transition: all .3s ease;
}

.faq-item.active {
    border-color: rgba(233, 75, 146, .35);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 22px 26px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: color .25s ease;
}

.faq-question:hover { color: var(--color-primary-to); }

.faq-question .q-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: all .3s ease;
}

.faq-item.active .q-icon {
    background: var(--gradient-brand);
    color: #fff;
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}

.faq-answer-inner {
    padding: 0 26px 24px;
    color: var(--color-text-soft);
    line-height: 1.85;
    font-size: 15px;
}

/* ---------- CTA 区 ---------- */
.cta-section {
    padding: 80px 0;
    text-align: center;
}

.cta-box {
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    padding: 64px 32px;
    color: #fff;
    box-shadow: 0 20px 60px rgba(233, 75, 146, .35);
    position: relative;
    overflow: hidden;
}

.cta-box::before,
.cta-box::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .12);
}

.cta-box::before { width: 240px; height: 240px; top: -100px; right: -80px; }
.cta-box::after  { width: 180px; height: 180px; bottom: -80px; left: -60px; }

.cta-box h2 {
    font-size: clamp(26px, 3.4vw, 36px);
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}

.cta-box p {
    font-size: 17px;
    opacity: .9;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.cta-box .btn {
    background: #fff;
    color: var(--color-primary-to);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
    position: relative;
    z-index: 1;
}

.cta-box .btn:hover { transform: translateY(-3px); color: var(--color-primary-from); }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--color-footer);
    color: #C5BCD0;
    padding: 70px 0 26px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-text { color: #fff; -webkit-text-fill-color: initial; background: none; }

.footer-brand p {
    color: #9D90AC;
    font-size: 14.5px;
    line-height: 1.85;
    max-width: 360px;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.footer-col li { margin-bottom: 10px; }

.footer-col a {
    color: #9D90AC;
    font-size: 14px;
    transition: color .2s, padding-left .2s;
}

.footer-col a:hover { color: #fff; padding-left: 4px; }

.footer-col a i { margin-right: 6px; opacity: .7; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 26px;
    text-align: center;
    color: #7A6F88;
    font-size: 13.5px;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-cta);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all .3s ease;
    z-index: 90;
    border: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover { transform: translateY(-3px); box-shadow: var(--shadow-cta-hover); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .scenes-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { height: 380px; }
}

@media (max-width: 768px) {
    .menu-toggle { display: inline-flex; }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        gap: 4px;
        border-bottom: 1px solid var(--color-divider);
        box-shadow: var(--shadow-md);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all .25s ease;
    }

    .nav-menu.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-menu li a { padding: 12px 16px; }

    .nav-actions .btn-primary { display: none; }

    .hero { padding: 56px 0 70px; }
    .hero-visual { display: none; }
    .hero-grid { grid-template-columns: 1fr; gap: 0; }
    .section { padding: 64px 0; }
    .section-head { margin-bottom: 40px; }

    .features-grid,
    .scenes-grid,
    .gallery-grid { grid-template-columns: 1fr; }

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

    .footer-grid { grid-template-columns: 1fr; gap: 30px; }

    .float-card { width: 200px; }
    .float-card.fc-1 { left: 0; }
    .float-card.fc-3 { left: 20px; }

    .cta-box { padding: 48px 22px; }

    .hero-meta { gap: 16px; }
}

@media (max-width: 480px) {
    .container { padding: 0 18px; }
    .stats-grid { grid-template-columns: 1fr; }
    .hero-cta .btn { flex: 1; justify-content: center; }
}

/* =========================================================
   内页通用样式（FAQ / 用户手册 / 隐私政策 / 反馈 等）
   ========================================================= */

/* 内页小型 Hero */
.page-hero {
    background: var(--gradient-hero);
    padding: 70px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: #FFB6D5;
    filter: blur(80px);
    opacity: .5;
    top: -120px;
    left: -80px;
    pointer-events: none;
}

.page-hero::after {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: #FFD4C2;
    filter: blur(80px);
    opacity: .5;
    bottom: -120px;
    right: -80px;
    pointer-events: none;
}

.page-hero .breadcrumb {
    position: relative;
    font-size: 14px;
    color: var(--color-text-soft);
    margin-bottom: 14px;
    z-index: 1;
}

.page-hero .breadcrumb a {
    color: var(--color-text-soft);
    transition: color .2s;
}

.page-hero .breadcrumb a:hover { color: var(--color-primary-to); }

.page-hero .breadcrumb .sep {
    margin: 0 8px;
    opacity: .5;
}

.page-hero h1 {
    position: relative;
    z-index: 1;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -.3px;
}

.page-hero p {
    position: relative;
    z-index: 1;
    color: var(--color-text-soft);
    max-width: 680px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
}

/* 内页通用容器 */
.page-content {
    padding: 70px 0 80px;
}

.page-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: flex-start;
}

/* 侧边目录 */
.page-toc {
    position: sticky;
    top: 96px;
    background: #fff;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-md);
    padding: 22px 18px;
    box-shadow: var(--shadow-sm);
}

.page-toc h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-primary-to);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.page-toc ul { display: flex; flex-direction: column; gap: 4px; }

.page-toc a {
    display: block;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-soft);
    border-left: 2px solid transparent;
    transition: all .2s;
}

.page-toc a:hover,
.page-toc a.active {
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
    border-left-color: var(--color-primary-to);
}

/* 章节卡片 */
.page-article {
    background: #fff;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-md);
    padding: 40px 44px;
    box-shadow: var(--shadow-sm);
}

.page-article > section + section {
    margin-top: 36px;
    padding-top: 36px;
    border-top: 1px dashed var(--color-divider);
}

.page-article h2 {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text);
}

.page-article h2::before {
    content: '';
    width: 4px;
    height: 22px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.page-article h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 22px 0 10px;
    color: var(--color-text);
}

.page-article p {
    color: var(--color-text-soft);
    line-height: 1.85;
    font-size: 15px;
    margin-bottom: 12px;
}

.page-article ul,
.page-article ol {
    margin: 12px 0 12px 22px;
    color: var(--color-text-soft);
    line-height: 1.85;
    font-size: 15px;
}

.page-article ul li,
.page-article ol li { margin-bottom: 8px; }

.page-article ul { list-style: disc; }
.page-article ol { list-style: decimal; }

.page-article strong { color: var(--color-text); font-weight: 700; }

.page-article a {
    color: var(--color-primary-to);
    border-bottom: 1px dashed var(--color-primary-to);
    transition: opacity .2s;
}

.page-article a:hover { opacity: .75; }

.page-article .updated {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
    border-radius: var(--radius-pill);
    font-size: 13px;
    margin-bottom: 18px;
}

.page-article blockquote {
    border-left: 3px solid var(--color-primary-from);
    background: var(--gradient-brand-soft);
    padding: 14px 18px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 16px 0;
    color: var(--color-text);
    font-size: 14.5px;
}

/* 联系卡 / 反馈通道（support 页） */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin: 18px 0 4px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 18px 20px;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-md);
    background: #FFF8F4;
    transition: all .25s;
}

.contact-item:hover {
    border-color: rgba(233, 75, 146, .25);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.contact-item .ci-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--gradient-brand-soft);
    color: var(--color-primary-to);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.contact-item h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--color-text);
}

.contact-item p {
    font-size: 13.5px;
    color: var(--color-text-soft);
    margin: 0;
    line-height: 1.7;
}

/* 反馈表单 */
.feedback-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 4px;
}

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

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.form-group label .required { color: #FF6F8E; margin-left: 2px; }

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 14px;
    border: 1.5px solid var(--color-divider);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14.5px;
    color: var(--color-text);
    background: #fff;
    transition: border-color .2s, box-shadow .2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-to);
    box-shadow: 0 0 0 4px rgba(233, 75, 146, .1);
}

.form-group textarea { resize: vertical; min-height: 130px; }

.form-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.form-note {
    font-size: 12.5px;
    color: var(--color-text-soft);
}

/* FAQ 内页布局微调 */
.page-faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .page-layout { grid-template-columns: 1fr; }
    .page-toc {
        position: static;
        order: -1;
    }
    .page-toc ul {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }
}

@media (max-width: 768px) {
    .page-hero { padding: 50px 0 40px; }
    .page-content { padding: 50px 0 60px; }
    .page-article { padding: 28px 22px; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .page-toc ul { grid-template-columns: 1fr; }
}