/* ============================================================
   SafeW iOS 平台页样式 - css/ios.css
   版本: V3.2.1 · 2026 安全补丁覆盖
   描述: SafeW iOS 版专属页面样式
   ============================================================ */

/* 变量与首页保持一致 */
:root {
    --safe-teal: #00c9a7;
    --safe-teal-dark: #009f86;
    --safe-teal-glow: rgba(0, 201, 167, 0.2);
    --safe-teal-light: #e6f7f3;
    --safe-navy: #0b2b4a;
    --safe-navy-light: #1a3b5c;
    --safe-slate: #3a5268;
    --safe-slate-light: #4a6278;
    --safe-mist: #f0f7fa;
    --safe-mist-dark: #e6f0f5;
    --safe-white: #ffffff;
    --safe-border: rgba(0,0,0,0.04);
    --safe-border-strong: rgba(0,0,0,0.08);
    --safe-shadow-sm: 0 4px 16px rgba(0,0,0,0.04);
    --safe-shadow-md: 0 8px 30px rgba(0,0,0,0.06);
    --safe-shadow-lg: 0 16px 40px rgba(0,0,0,0.08);
    --safe-shadow-teal: 0 6px 20px rgba(0,201,167,0.25);
    --safe-radius-sm: 12px;
    --safe-radius-md: 18px;
    --safe-radius-lg: 24px;
    --safe-radius-xl: 32px;
    --safe-radius-full: 50px;
    --safe-transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --safe-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --safe-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--safe-font);
    background: #f8fbfc;
    color: #1a2a3a;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--safe-transition);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 导航栏（与首页一致） ========== */
.navbar {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--safe-border);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--safe-navy);
    letter-spacing: -0.3px;
    white-space: nowrap;
}

.nav-brand svg {
    flex-shrink: 0;
}

.nav-brand .version-tag {
    font-size: 11px;
    font-weight: 500;
    background: var(--safe-teal);
    color: #fff;
    padding: 2px 10px;
    border-radius: 20px;
    margin-left: 2px;
    letter-spacing: 0.3px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    list-style: none;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: #2c3e50;
    padding: 6px 0;
    position: relative;
    transition: color var(--safe-transition);
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--safe-teal);
}

.nav-links a.active {
    color: var(--safe-teal);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--safe-teal);
    border-radius: 2px;
}

.nav-cta {
    background: linear-gradient(135deg, var(--safe-teal), var(--safe-teal-dark));
    padding: 8px 22px;
    border-radius: 30px;
    font-weight: 600;
    color: #fff !important;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--safe-shadow-teal);
    display: inline-block;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,201,167,0.35);
    color: #fff !important;
}

.nav-more {
    position: relative;
}

.nav-more-btn {
    background: none;
    border: none;
    font-size: 15px;
    font-weight: 500;
    color: #2c3e50;
    cursor: pointer;
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color var(--safe-transition);
    font-family: var(--safe-font);
}

.nav-more-btn:hover {
    color: var(--safe-teal);
}

.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: -20px;
    background: #fff;
    border-radius: var(--safe-radius-md);
    box-shadow: var(--safe-shadow-lg);
    border: 1px solid var(--safe-border-strong);
    padding: 12px 0;
    min-width: 180px;
    z-index: 1001;
    margin-top: 8px;
}

.nav-dropdown.open {
    display: block;
    animation: fadeInDown 0.2s ease;
}

.nav-dropdown li {
    list-style: none;
}

.nav-dropdown a {
    display: block;
    padding: 8px 24px;
    font-size: 14px;
    color: #2c3e50;
    transition: background 0.15s, color 0.15s;
}

.nav-dropdown a:hover {
    background: rgba(0,201,167,0.08);
    color: var(--safe-teal);
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1002;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--safe-navy);
    border-radius: 3px;
    transition: 0.3s;
}

/* ========== iOS 英雄区 ========== */
.ios-hero {
    background: linear-gradient(145deg, #f0f7fa, #e6f0f5);
    padding: 70px 0 60px;
    position: relative;
    overflow: hidden;
}

.ios-hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -50px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0,201,167,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.ios-hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,201,167,0.12);
    color: var(--safe-teal-dark);
    font-weight: 600;
    font-size: 14px;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 20px;
    letter-spacing: 0.2px;
}

.eyebrow-dot {
    width: 8px;
    height: 8px;
    background: var(--safe-teal);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
    0% { box-shadow: 0 0 0 0 rgba(0,201,167,0.5); }
    70% { box-shadow: 0 0 0 8px rgba(0,201,167,0); }
    100% { box-shadow: 0 0 0 0 rgba(0,201,167,0); }
}

.ios-hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--safe-navy);
    margin-bottom: 16px;
    letter-spacing: -0.8px;
}

.ios-hero-text h1 span {
    color: var(--safe-teal);
    position: relative;
    display: inline-block;
}

.ios-hero-text h1 span::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 10px;
    background: rgba(0,201,167,0.2);
    z-index: -1;
    border-radius: 4px;
}

.hero-lead {
    font-size: 18px;
    color: var(--safe-slate);
    margin-bottom: 30px;
    line-height: 1.7;
    max-width: 550px;
}

.ios-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}

.btn-app-store {
    background: linear-gradient(135deg, #0b2b4a, #1a3b5c);
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 600;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 6px 20px rgba(11,43,74,0.25);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-family: var(--safe-font);
}

.btn-app-store:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(11,43,74,0.35);
}

.btn-secondary {
    background: rgba(11,43,74,0.06);
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 500;
    color: var(--safe-navy);
    border: 1px solid rgba(11,43,74,0.1);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    font-size: 16px;
    font-family: var(--safe-font);
}

.btn-secondary:hover {
    background: rgba(11,43,74,0.1);
    border-color: rgba(11,43,74,0.2);
    transform: translateY(-2px);
}

.ios-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.meta-chip {
    background: #fff;
    border-radius: 30px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--safe-slate);
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.ios-hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 450px;
}

/* iPhone 模拟 */
.iphone-frame {
    width: 280px;
    height: 560px;
    background: #0b2b4a;
    border-radius: 40px;
    padding: 10px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.2), 0 0 0 2px rgba(11,43,74,0.8);
    position: relative;
}

.iphone-notch {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #0b2b4a;
    border-radius: 0 0 15px 15px;
    z-index: 2;
}

.iphone-screen {
    background: #fff;
    border-radius: 30px;
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

.screen-status {
    display: flex;
    justify-content: space-between;
    padding: 14px 20px 8px;
    font-size: 12px;
    color: var(--safe-slate-light);
    font-weight: 600;
}

.screen-chat {
    flex: 1;
    padding: 10px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
}

.chat-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 18px;
    font-size: 13px;
    line-height: 1.4;
}

.chat-bubble.received {
    align-self: flex-start;
    background: var(--safe-mist);
    color: var(--safe-slate);
    border-bottom-left-radius: 6px;
}

.chat-bubble.sent {
    align-self: flex-end;
    background: var(--safe-teal);
    color: #fff;
    border-bottom-right-radius: 6px;
}

.screen-input {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-top: 1px solid var(--safe-border);
    font-size: 13px;
    color: var(--safe-slate-light);
}

.input-send {
    width: 28px;
    height: 28px;
    background: var(--safe-teal);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    cursor: pointer;
}

.ios-shield-badge {
    position: absolute;
    bottom: 30px;
    right: 10px;
    background: #fff;
    border-radius: var(--safe-radius-md);
    padding: 12px 18px;
    box-shadow: var(--safe-shadow-md);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 5;
    animation: float 5s ease-in-out infinite 1.5s;
    border: 1px solid var(--safe-border);
}

.shield-icon {
    font-size: 24px;
}

.ios-shield-badge strong {
    display: block;
    font-size: 14px;
    color: var(--safe-navy);
}

.ios-shield-badge span {
    font-size: 12px;
    color: var(--safe-slate-light);
}

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

/* ========== 通用区块标题 ========== */
.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--safe-teal-dark);
    background: rgba(0,201,167,0.1);
    padding: 4px 16px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}

.section-title h2 {
    font-size: 34px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.section-title p {
    color: var(--safe-slate);
    font-size: 17px;
    max-width: 650px;
    margin: 0 auto;
}

/* ========== iOS 专属特性网格 ========== */
.ios-features {
    padding: 70px 0;
    background: #fff;
}

.ios-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.ios-feature-card {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 32px 28px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    display: flex;
    flex-direction: column;
}

.ios-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--safe-shadow-md);
    border-color: rgba(0,201,167,0.25);
}

.ios-feature-icon {
    font-size: 36px;
    margin-bottom: 14px;
    display: block;
}

.ios-feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 8px;
}

.ios-feature-card p {
    color: var(--safe-slate);
    font-size: 15px;
    line-height: 1.7;
    flex-grow: 1;
}

/* ========== iOS 数据流可视化 ========== */
.ios-architecture {
    padding: 70px 0;
    background: var(--safe-mist);
}

.ios-arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.ios-arch-node {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 20px 24px;
    text-align: center;
    min-width: 160px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.3s;
}

.ios-arch-node:hover {
    transform: translateY(-4px);
}

.ios-arch-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.ios-arch-label {
    font-weight: 700;
    color: var(--safe-navy);
    font-size: 15px;
}

.ios-arch-sub {
    display: block;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.ios-arch-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.ios-arrow-line {
    width: 60px;
    height: 2px;
    background: rgba(0,201,167,0.4);
    position: relative;
}

.ios-arrow-line::after {
    content: '';
    position: absolute;
    right: -2px;
    top: -4px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--safe-teal);
    border-right: 2px solid var(--safe-teal);
    transform: rotate(45deg);
}

.ios-arrow-label {
    font-size: 12px;
    color: var(--safe-slate-light);
}

.ios-arch-note {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: var(--safe-slate);
    background: rgba(0,201,167,0.08);
    padding: 12px 20px;
    border-radius: 30px;
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

/* ========== iOS 权限清单 ========== */
.ios-permissions {
    padding: 70px 0;
    background: #fff;
}

.permissions-table {
    max-width: 800px;
    margin: 0 auto;
    background: var(--safe-mist);
    border-radius: var(--safe-radius-lg);
    padding: 10px 20px;
    box-shadow: var(--safe-shadow-sm);
}

.permission-row {
    display: grid;
    grid-template-columns: 50px 1fr 2fr 1.2fr;
    gap: 16px;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--safe-border);
}

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

.permission-icon {
    font-size: 22px;
    text-align: center;
}

.permission-name {
    font-weight: 600;
    color: var(--safe-navy);
    font-size: 15px;
}

.permission-use {
    color: var(--safe-slate);
    font-size: 14px;
}

.permission-status {
    font-size: 13px;
    color: var(--safe-teal-dark);
    text-align: right;
    font-weight: 500;
}

/* ========== iOS 用户评价 ========== */
.ios-testimonials {
    padding: 70px 0;
    background: var(--safe-mist);
}

.ios-testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.ios-testimonial-card {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 28px 24px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.25s;
}

.ios-testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--safe-shadow-md);
}

.ios-testimonial-stars {
    color: #ffb400;
    font-size: 18px;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.ios-testimonial-text {
    color: var(--safe-slate);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 18px;
}

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

.ios-author-avatar {
    width: 40px;
    height: 40px;
    background: var(--safe-teal-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.ios-testimonial-author strong {
    display: block;
    font-size: 14px;
    color: var(--safe-navy);
}

.ios-testimonial-author span {
    font-size: 12px;
    color: var(--safe-slate-light);
}

.ios-rating-summary {
    text-align: center;
    font-size: 15px;
    color: var(--safe-slate-light);
    padding: 16px 32px;
    background: #fff;
    border-radius: 40px;
    display: block;
    width: fit-content;
    margin: 32px auto 0;
    box-shadow: var(--safe-shadow-sm);
}

.ios-rating-summary strong {
    color: var(--safe-navy);
    font-size: 18px;
}

/* ========== iOS 版本更新时间线 ========== */
.ios-updates {
    padding: 70px 0;
    background: #fff;
}

.ios-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.ios-timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(0,0,0,0.1);
}

.ios-timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.ios-timeline-dot {
    position: absolute;
    left: -34px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #ccc;
    z-index: 1;
}

.ios-timeline-dot.current {
    border-color: var(--safe-teal);
    background: var(--safe-teal);
    box-shadow: 0 0 0 4px rgba(0,201,167,0.2);
}

.ios-timeline-content {
    background: #fff;
    border-radius: var(--safe-radius-md);
    padding: 20px 24px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.ios-timeline-version {
    font-size: 18px;
    font-weight: 700;
    color: var(--safe-navy);
}

.ios-timeline-date {
    font-size: 13px;
    color: var(--safe-slate-light);
    margin-bottom: 8px;
}

.ios-timeline-content p {
    color: var(--safe-slate);
    font-size: 14px;
}

/* ========== iOS 下载指引 ========== */
.ios-download-guide {
    padding: 70px 0;
    background: var(--safe-mist);
}

.ios-guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.ios-guide-text h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 12px;
}

.ios-guide-text p {
    color: var(--safe-slate);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.ios-guide-list {
    list-style: none;
}

.ios-guide-list li {
    padding: 8px 0;
    color: var(--safe-slate);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.guide-check {
    color: var(--safe-teal);
    font-weight: 700;
    font-size: 18px;
}

.ios-guide-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.appstore-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 20px 24px;
    box-shadow: var(--safe-shadow-md);
    border: 1px solid var(--safe-border);
    max-width: 400px;
    width: 100%;
}

.appstore-icon {
    flex-shrink: 0;
}

.appstore-info {
    flex: 1;
}

.appstore-info strong {
    display: block;
    font-size: 18px;
    color: var(--safe-navy);
}

.appstore-info span {
    font-size: 13px;
    color: var(--safe-slate-light);
}

.appstore-rating {
    display: block;
    margin-top: 4px;
    color: #ffb400;
    font-size: 13px;
}

.appstore-btn {
    background: var(--safe-teal);
    color: #fff;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    transition: background 0.2s;
}

.appstore-btn:hover {
    background: var(--safe-teal-dark);
}

.ios-guide-note {
    font-size: 14px;
    color: var(--safe-slate);
    background: rgba(0,201,167,0.08);
    padding: 8px 16px;
    border-radius: 20px;
}

/* ========== CTA ========== */
.ios-cta {
    padding: 70px 0;
    background: #fff;
}

.ios-cta-box {
    background: linear-gradient(135deg, #f0f7fa, #e6f0f5);
    border-radius: var(--safe-radius-xl);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.ios-cta-box h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 12px;
}

.ios-cta-box p {
    font-size: 18px;
    color: var(--safe-slate);
    margin-bottom: 30px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.ios-cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--safe-mist-dark);
    padding: 48px 0 32px;
    border-top: 1px solid var(--safe-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand h3 {
    font-size: 22px;
    color: var(--safe-navy);
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--safe-slate-light);
    font-size: 14px;
    max-width: 300px;
    line-height: 1.7;
}

.footer-meta {
    margin-top: 8px;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--safe-navy);
    margin-bottom: 14px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col ul a {
    font-size: 14px;
    color: var(--safe-slate-light);
    transition: color 0.2s;
}

.footer-col ul a:hover {
    color: var(--safe-teal);
}

.footer-bottom {
    border-top: 1px solid var(--safe-border-strong);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.footer-bottom .info-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 28px;
}

.footer-bottom .badge {
    background: var(--safe-teal);
    color: #fff;
    padding: 1px 12px;
    border-radius: 20px;
    font-size: 11px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .ios-hero-grid,
    .ios-guide-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-lead,
    .ios-guide-text p {
        margin-left: auto;
        margin-right: auto;
    }
    .ios-hero-actions {
        justify-content: center;
    }
    .ios-hero-meta {
        justify-content: center;
    }
    .ios-hero-visual {
        min-height: 350px;
    }
    .ios-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .ios-arch-flow {
        flex-direction: column;
        align-items: center;
    }
    .ios-arch-arrow {
        transform: rotate(90deg);
    }
    .permission-row {
        grid-template-columns: 40px 1fr 1.5fr 1fr;
        gap: 10px;
    }
    .ios-testimonial-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(16px);
        padding: 20px 30px;
        border-bottom: 1px solid var(--safe-border);
        gap: 12px;
        align-items: flex-start;
        box-shadow: var(--safe-shadow-md);
    }
    .nav-links.open {
        display: flex;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-more {
        display: block;
        width: 100%;
    }
    .nav-dropdown {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        padding: 8px 0 0 16px;
        background: transparent;
        min-width: auto;
    }
    .nav-dropdown.open {
        display: block;
    }
    .nav-more-btn {
        width: 100%;
        justify-content: space-between;
    }
    .nav-cta {
        margin-top: 8px;
    }
    .ios-hero-text h1 {
        font-size: 36px;
    }
    .hero-lead {
        font-size: 16px;
    }
    .ios-features-grid {
        grid-template-columns: 1fr;
    }
    .permission-row {
        grid-template-columns: 1fr;
        gap: 6px;
        text-align: left;
    }
    .permission-icon {
        display: none;
    }
    .permission-status {
        text-align: left;
    }
    .ios-testimonial-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .btn-app-store,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    .ios-hero {
        padding: 40px 0;
    }
    .ios-hero-text h1 {
        font-size: 30px;
    }
    .ios-hero-visual {
        min-height: 280px;
    }
    .iphone-frame {
        width: 220px;
        height: 440px;
        border-radius: 30px;
    }
    .iphone-notch {
        width: 90px;
        height: 20px;
        top: 8px;
    }
    .iphone-screen {
        border-radius: 22px;
    }
    .chat-bubble {
        font-size: 12px;
    }
    .ios-feature-card {
        padding: 20px 16px;
    }
    .section-title h2 {
        font-size: 26px;
    }
    .ios-cta-box {
        padding: 40px 20px;
    }
    .ios-cta-box h2 {
        font-size: 26px;
    }
    .permissions-table {
        padding: 5px 12px;
    }
}