/* ============================================
   OPT Landing Page - 高转化着陆页样式
   Brand: Navy #1E3A5F | Gold #E8A838
   ============================================ */

/* ========== HERO — 左右分栏 ========== */
.opt-hero {
    position: relative;
    background: var(--navy-dark, #142a45) url('../images/opt-hero-bg.jpg') center/cover no-repeat;
    color: #fff;
    padding: 120px 0 80px;
    overflow: hidden;
}
.opt-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20,42,69,0.68) 0%, rgba(30,58,95,0.60) 100%);
    z-index: 1;
}
.opt-hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 48px;
    align-items: start;
}

/* --- Hero 左侧（价值主张） --- */
.opt-hero-left { padding-top: 16px; }

/* --- Hero 右侧（表单） --- */
.opt-hero-right { padding-top: 0; }

.opt-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(232,168,56,0.15);
    border: 1px solid rgba(232,168,56,0.4);
    color: var(--gold, #E8A838);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 24px;
    margin-bottom: 24px;
}
.opt-hero-badge i { font-size: 13px; }

.opt-hero h1 {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
}

.opt-hero-sub {
    font-size: 18px;
    font-weight: 500;
    color: var(--gold, #E8A838);
    margin-bottom: 16px;
}

.opt-hero-desc {
    font-size: 16px;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 560px;
}

.opt-hero-stats {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}
.opt-hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.opt-hero-stat-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold, #E8A838);
}
.opt-hero-stat-label {
    font-size: 13px;
    opacity: 0.75;
    white-space: nowrap;
}

/* --- Hero 信任标识 --- */
.opt-hero-trust {
    display: flex !important;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}
.opt-hero-trust-badge {
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    padding: 6px 14px;
    border-radius: 20px;
    white-space: nowrap;
}
.opt-hero-trust-badge i {
    color: var(--gold, #E8A838);
    font-size: 12px;
}

/* --- Hero 右侧表单卡 --- */
.opt-form-card {
    background: #fff;
    color: var(--gray-900, #212529);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    overflow: hidden;
}
.opt-form-header {
    background: var(--navy, #1E3A5F);
    color: #fff;
    padding: 24px 28px;
    text-align: center;
}
.opt-form-header i {
    font-size: 28px;
    color: var(--gold, #E8A838);
    margin-bottom: 8px;
    display: block;
}
.opt-form-header h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}
.opt-form-header p {
    font-size: 14px;
    opacity: 0.8;
}

.opt-form {
    padding: 24px 28px 28px;
}
.opt-form-group {
    margin-bottom: 16px;
}
.opt-form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700, #495057);
    margin-bottom: 6px;
}
.opt-form-group label span {
    color: #c62828;
}
.opt-form-group input,
.opt-form-group select,
.opt-form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    font-family: inherit;
    border: 1.5px solid #d0d5dd;
    border-radius: 8px;
    background: #f9fafb;
    color: var(--gray-900, #212529);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.opt-form-group input:focus,
.opt-form-group select:focus,
.opt-form-group textarea:focus {
    outline: none;
    border-color: var(--gold, #E8A838);
    box-shadow: 0 0 0 3px rgba(232,168,56,0.15);
    background: #fff;
}
.opt-form-group select {
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236c757d' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}
.opt-form-group textarea {
    resize: vertical;
    min-height: 72px;
}

.opt-form-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    background: var(--gold, #E8A838);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.opt-form-submit:hover {
    background: var(--gold-dark, #d49530);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(232,168,56,0.35);
}

.opt-form-privacy {
    margin-top: 12px;
    font-size: 12px;
    color: #6c757d;
    text-align: center;
}
.opt-form-privacy i {
    margin-right: 4px;
}

/* ========== 紧急警报栏（单行） ========== */
.opt-alert-bar {
    background: #b71c1c;
    color: #fff;
    padding: 10px 0;
    font-size: 13px;
    font-weight: 500;
    overflow: hidden;
    line-height: 1.4;
}
.opt-alert-track {
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: nowrap;
    white-space: nowrap;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.opt-alert-item {
    display: inline;
}
.opt-alert-item i {
    color: #ffcdd2;
    font-size: 11px;
    margin-right: 5px;
}
.opt-alert-sep {
    margin: 0 16px;
    opacity: 0.4;
    font-weight: 300;
}

/* ========== 通用 Section ========== */
.opt-section {
    padding: 72px 0;
}
.opt-section--alt {
    background: #f8f9fa;
}
.opt-section-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    text-align: center;
    margin-bottom: 12px;
}
.opt-section-desc {
    text-align: center;
    color: #6c757d;
    font-size: 16px;
    max-width: 700px;
    margin: 0 auto 48px;
    line-height: 1.7;
}
.opt-sub-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin: 56px 0 28px;
    padding-left: 16px;
    border-left: 4px solid var(--gold, #E8A838);
}

/* ========== 政策变化卡片 ========== */
.opt-changes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.opt-change-card {
    background: #fff;
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border-top: 3px solid var(--gold, #E8A838);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.opt-change-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.1);
}
.opt-change-card--danger {
    border-top-color: #c62828;
}
.opt-change-card--warning {
    border-top-color: #e65100;
}
.opt-change-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--gold, #E8A838) 0%, var(--gold-dark, #d49530) 100%);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}
.opt-change-card--danger .opt-change-icon {
    background: linear-gradient(135deg, #c62828 0%, #b71c1c 100%);
}
.opt-change-card--warning .opt-change-icon {
    background: linear-gradient(135deg, #e65100 0%, #d84315 100%);
}
.opt-change-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 10px;
}
.opt-change-card p {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== OPT 时间线 ========== */
.opt-timeline {
    position: relative;
    padding-left: 60px;
    margin-bottom: 48px;
}
.opt-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--gold, #E8A838) 0%, var(--navy, #1E3A5F) 100%);
}
.opt-timeline-item {
    position: relative;
    padding-bottom: 36px;
}
.opt-timeline-item:last-child { padding-bottom: 0; }
.opt-timeline-marker {
    position: absolute;
    left: -49px;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--gold, #E8A838);
    color: #fff;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 4px rgba(232,168,56,0.2);
}
.opt-timeline-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--gold, #E8A838);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.opt-timeline-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--navy, #1E3A5F);
    margin-bottom: 8px;
}
.opt-timeline-content p {
    font-size: 15px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== 材料清单 ========== */
.opt-checklist-box {
    background: #fff;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border-left: 4px solid var(--gold, #E8A838);
}
.opt-checklist-box > h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 24px;
}
.opt-checklist-box > h3 i {
    color: var(--gold, #E8A838);
    margin-right: 8px;
}
.opt-checklist-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.opt-checklist-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--navy, #1E3A5F);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gold, #E8A838);
}
.opt-checklist-col ul {
    list-style: none;
    padding: 0;
}
.opt-checklist-col li {
    font-size: 14px;
    color: var(--gray-700, #495057);
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.5;
}
.opt-checklist-col li i {
    color: #2e7d32;
    margin-top: 3px;
    flex-shrink: 0;
}

/* ========== NOID vs RFE 对比 ========== */
.opt-compare-box {
    margin-bottom: 48px;
}
.opt-compare-box > h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    text-align: center;
    margin-bottom: 24px;
}
.opt-compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.opt-compare-card {
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.opt-compare-card--rfe {
    background: #f0f7f0;
    border: 2px solid #a5d6a7;
}
.opt-compare-card--noid {
    background: #fef2f2;
    border: 2px solid #fecaca;
}
.opt-compare-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.opt-compare-header i {
    font-size: 22px;
}
.opt-compare-card--rfe .opt-compare-header i { color: #2e7d32; }
.opt-compare-card--noid .opt-compare-header i { color: #c62828; }
.opt-compare-header h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
}
.opt-compare-card ul {
    list-style: none;
    padding: 0;
}
.opt-compare-card li {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.6;
    padding: 6px 0;
}

/* ========== NOID 5大原因 ========== */
.opt-reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}
.opt-reason-card {
    background: #fff;
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    position: relative;
    overflow: hidden;
}
.opt-reason-num {
    font-size: 48px;
    font-weight: 800;
    color: rgba(30,58,95,0.06);
    position: absolute;
    top: 12px;
    right: 16px;
    line-height: 1;
}
.opt-reason-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 10px;
}
.opt-reason-card p {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== NOID 应对策略 ========== */
.opt-strategy-box {
    background: #fff;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border-left: 4px solid var(--navy, #1E3A5F);
    margin-bottom: 48px;
}
.opt-strategy-box > h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 28px;
}
.opt-strategy-box > h3 i {
    color: var(--gold, #E8A838);
    margin-right: 8px;
}
.opt-strategy-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.opt-strategy-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.opt-strategy-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--navy, #1E3A5F) 0%, var(--navy-light, #2a5080) 100%);
    color: var(--gold, #E8A838);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.opt-strategy-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 6px;
}
.opt-strategy-text p {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== 为什么需要律师 ========== */
.opt-why-lawyer {
    background: linear-gradient(135deg, var(--navy, #1E3A5F) 0%, var(--navy-dark, #142a45) 100%);
    color: #fff;
    border-radius: 12px;
    padding: 40px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
}
.opt-why-lawyer h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
}
.opt-why-lawyer p {
    font-size: 15px;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 16px;
}
.opt-why-lawyer ul {
    list-style: none;
    padding: 0;
}
.opt-why-lawyer li {
    font-size: 14px;
    line-height: 1.7;
    padding: 6px 0;
    opacity: 0.9;
}
.opt-why-lawyer-cta {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.opt-phone-link {
    color: var(--gold, #E8A838) !important;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
}
.opt-phone-link:hover { text-decoration: underline; }

/* ========== STEM OPT 卡片 ========== */
.opt-stem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.opt-stem-card {
    background: #fff;
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.opt-stem-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--navy, #1E3A5F) 0%, var(--navy-light, #2a5080) 100%);
    color: var(--gold, #E8A838);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}
.opt-stem-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 14px;
}
.opt-stem-card ul {
    list-style: none;
    padding: 0;
}
.opt-stem-card li {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.6;
    padding: 6px 0;
    padding-left: 16px;
    position: relative;
}
.opt-stem-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--gold, #E8A838);
    font-weight: 700;
}

/* ========== H-1B 过渡流程 ========== */
.opt-h1b-flow {
    max-width: 700px;
    margin: 0 auto 48px;
}
.opt-h1b-step {
    background: #fff;
    border-radius: 8px;
    padding: 28px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border-left: 4px solid var(--navy, #1E3A5F);
}
.opt-h1b-step--highlight {
    border-left-color: var(--gold, #E8A838);
    background: #fefbf5;
}
.opt-h1b-step-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 10px;
}
.opt-h1b-step-num {
    display: inline-block;
    background: var(--navy, #1E3A5F);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
    white-space: nowrap;
}
.opt-h1b-step--highlight .opt-h1b-step-num {
    background: var(--gold, #E8A838);
}
.opt-h1b-step h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
}
.opt-h1b-step p {
    font-size: 15px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}
.opt-h1b-arrow {
    text-align: center;
    padding: 12px 0;
    color: var(--gold, #E8A838);
    font-size: 20px;
}

/* H-1B 抽签新规 */
.opt-h1b-lottery {
    background: #fff;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border-top: 3px solid var(--gold, #E8A838);
}
.opt-h1b-lottery > h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 12px;
}
.opt-h1b-lottery > h3 i {
    color: var(--gold, #E8A838);
    margin-right: 8px;
}
.opt-h1b-lottery > p {
    font-size: 15px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
    margin-bottom: 20px;
}
.opt-h1b-wage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}
.opt-h1b-wage {
    text-align: center;
    padding: 16px 12px;
    background: #f8f9fa;
    border-radius: 8px;
}
.opt-h1b-wage-level {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 6px;
}
.opt-h1b-wage-chance {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--gold, #E8A838);
}
.opt-h1b-tip {
    font-size: 14px;
    color: var(--gray-700, #495057);
    background: #fefbf5;
    padding: 14px 18px;
    border-radius: 8px;
    border: 1px solid rgba(232,168,56,0.3);
    line-height: 1.6;
}
.opt-h1b-tip i {
    color: var(--gold, #E8A838);
    margin-right: 6px;
}

/* ========== 服务优势 ========== */
.opt-advantage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.opt-advantage-card {
    background: #fff;
    border-radius: 8px;
    padding: 32px 28px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.opt-advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.1);
}
.opt-advantage-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--gold, #E8A838) 0%, var(--gold-dark, #d49530) 100%);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
}
.opt-advantage-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy, #1E3A5F);
    margin-bottom: 10px;
}
.opt-advantage-card p {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== 客户案例 / 社会证明 ========== */
.opt-testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.opt-testimonial-card {
    background: #fff;
    border-radius: 12px;
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.opt-testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}
.opt-testimonial-quote {
    color: var(--gold, #E8A838);
    font-size: 24px;
    margin-bottom: 12px;
    opacity: 0.6;
}
.opt-testimonial-text {
    font-size: 14px;
    color: var(--gray-700, #495057);
    line-height: 1.8;
    margin-bottom: 20px;
}
.opt-testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid #eee;
    padding-top: 16px;
}
.opt-testimonial-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--navy, #1E3A5F) 0%, var(--navy-light, #2a5080) 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}
.opt-testimonial-info strong {
    display: block;
    font-size: 14px;
    color: var(--navy, #1E3A5F);
    margin-bottom: 2px;
}
.opt-testimonial-info span {
    font-size: 12px;
    color: #6c757d;
    line-height: 1.4;
}

/* ========== FAQ 手风琴 ========== */
.opt-faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.opt-faq-item {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    overflow: hidden;
}
.opt-faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 18px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--navy, #1E3A5F);
    text-align: left;
    font-family: inherit;
    transition: background 0.2s;
}
.opt-faq-q:hover {
    background: #f8f9fa;
}
.opt-faq-q i {
    color: var(--gold, #E8A838);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.opt-faq-q[aria-expanded="true"] i {
    transform: rotate(180deg);
}
.opt-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.opt-faq-a p {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--gray-700, #495057);
    line-height: 1.7;
}

/* ========== 底部 CTA ========== */
.opt-cta-section {
    background: linear-gradient(135deg, var(--navy, #1E3A5F) 0%, var(--navy-dark, #142a45) 100%);
    color: #fff;
    text-align: center;
}
.opt-cta-inner h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}
.opt-cta-inner > p {
    font-size: 16px;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.opt-cta-contacts {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.opt-cta-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 500;
    color: #fff !important;
    text-decoration: none;
    cursor: pointer;
}
.opt-cta-contact-item i {
    font-size: 20px;
    color: var(--gold, #E8A838);
}
.opt-cta-contact-item:hover {
    color: var(--gold, #E8A838) !important;
}
.opt-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== 响应式 — 平板 ========== */
@media (max-width: 1024px) {
    .opt-hero { padding: 100px 0 60px; }
    .opt-hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .opt-hero h1 { font-size: 34px; }
    .opt-hero-left { text-align: center; padding-top: 0; }
    .opt-hero-right { order: 2; }
    .opt-hero-desc { margin-left: auto; margin-right: auto; }
    .opt-hero-stats { justify-content: center; }
    .opt-hero-trust { justify-content: center; }

    .opt-form-card { max-width: 480px; margin: 0 auto; }

    .opt-testimonial-grid { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto; }

    .opt-changes-grid { grid-template-columns: repeat(2, 1fr); }
    .opt-stem-grid { grid-template-columns: 1fr; }
    .opt-compare-grid { grid-template-columns: 1fr; }
    .opt-why-lawyer {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .opt-why-lawyer ul { text-align: left; max-width: 500px; margin: 0 auto; }

    .opt-section-title { font-size: 26px; }
}

/* ========== 响应式 — 手机 ========== */
@media (max-width: 768px) {
    .opt-hero { padding: 80px 0 48px; }
    .opt-hero h1 { font-size: 28px; }
    .opt-hero-sub { font-size: 16px; }
    .opt-hero-desc { font-size: 14px; }
    .opt-hero-stat-num { font-size: 24px; }
    .opt-hero-stats { gap: 20px; }

    .opt-form { padding: 20px; }
    .opt-form-header { padding: 20px; }

    .opt-alert-track {
        font-size: 11px;
        flex-wrap: wrap;
        white-space: normal;
        justify-content: center;
        gap: 4px 0;
    }
    .opt-alert-sep { margin: 0 8px; }

    .opt-section { padding: 48px 0; }
    .opt-section-title { font-size: 24px; }
    .opt-section-desc { font-size: 14px; margin-bottom: 32px; }
    .opt-sub-title { font-size: 20px; }

    .opt-changes-grid { grid-template-columns: 1fr; }
    .opt-advantage-grid { grid-template-columns: 1fr; }

    .opt-checklist-grid { grid-template-columns: 1fr; }

    .opt-timeline { padding-left: 45px; }
    .opt-timeline::before { left: 14px; }
    .opt-timeline-marker { left: -37px; width: 16px; height: 16px; font-size: 9px; }
    .opt-timeline-content h3 { font-size: 16px; }
    .opt-timeline-content p { font-size: 14px; }

    .opt-reasons-grid { grid-template-columns: 1fr; }

    .opt-why-lawyer { padding: 28px 24px; }
    .opt-why-lawyer h3 { font-size: 18px; }

    .opt-h1b-wage-grid { grid-template-columns: repeat(2, 1fr); }

    .opt-hero-trust { gap: 8px; }
    .opt-hero-trust-badge { font-size: 12px; padding: 5px 10px; }

    .opt-testimonial-text { font-size: 13px; }

    .opt-cta-inner h2 { font-size: 22px; }
    .opt-cta-contacts { gap: 16px; }
    .opt-cta-buttons { flex-direction: column; align-items: center; }
}

/* ========== 响应式 — 小屏手机 ========== */
@media (max-width: 480px) {
    .opt-hero { padding: 72px 0 40px; }
    .opt-hero h1 { font-size: 24px; }
    .opt-hero-badge { font-size: 12px; padding: 6px 12px; }
    .opt-hero-stats { gap: 16px; }
    .opt-hero-stat-num { font-size: 20px; }
    .opt-hero-stat-label { font-size: 11px; }

    .opt-section-title { font-size: 20px; }
    .opt-change-card { padding: 20px 18px; }
    .opt-change-card h3 { font-size: 16px; }

    .opt-strategy-step { flex-direction: column; gap: 12px; }

    .opt-hero-trust-badge { font-size: 11px; padding: 4px 8px; }

    .opt-faq-q { font-size: 14px; padding: 14px 18px; }
    .opt-faq-a p { font-size: 13px; padding: 0 18px 16px; }
}