/* ========================================
   注册会计师个人网站 — 样式表
   ======================================== */

/* ---------- CSS Variables ---------- */
:root {
    --color-primary: #1B3A5C;
    --color-primary-light: #2A5A8C;
    --color-primary-dark: #0F2440;
    --color-secondary: #C8A052;
    --color-secondary-light: #D4B76A;
    --color-text: #2D3748;
    --color-text-light: #718096;
    --color-text-lighter: #A0AEC0;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F7FAFC;
    --color-bg-dark: #EDF2F7;
    --color-border: #E2E8F0;
    --color-success: #38A169;
    --color-error: #E53E3E;

    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

    --nav-height: 72px;
    --max-width: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol { list-style: none; }

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

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

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Section ---------- */
.section {
    padding: 100px 0;
}

.section--alt {
    background: var(--color-bg-alt);
}

.section__header {
    text-align: center;
    margin-bottom: 60px;
}

.section__title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--color-secondary);
    margin: 12px auto 0;
    border-radius: 2px;
}

.section__subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    margin-top: 8px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(27, 58, 92, 0.3);
}

.btn--primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(27, 58, 92, 0.4);
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn--full {
    width: 100%;
}

/* ---------- Header / Navigation ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.header--scrolled {
    box-shadow: var(--shadow-md);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-shrink: 0;
}

.logo__name {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.logo__title {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: 1px;
    border: 2px solid var(--color-secondary);
    padding: 1px 6px;
    border-radius: 3px;
}

/* Nav */
.nav__list {
    display: flex;
    gap: 8px;
}

.nav__link {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
    background: rgba(27, 58, 92, 0.06);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.hamburger__bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.hamburger--open .hamburger__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger--open .hamburger__bar:nth-child(2) {
    opacity: 0;
}

.hamburger--open .hamburger__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== Hero ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 40%, #E8EEF4 100%);
    padding-top: var(--nav-height);
    position: relative;
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

.hero__greeting {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.hero__name {
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1.2;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.hero__title {
    font-size: clamp(18px, 2.5vw, 22px);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.hero__tagline {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.hero__years {
    color: var(--color-secondary);
    font-weight: 700;
    font-size: 1.2em;
}

.hero__desc {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

/* Stats */
.hero__stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}

.stat__label {
    font-size: 14px;
    color: var(--color-text-light);
}

/* Hero Visual */
.hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero__avatar {
    width: 280px;
    height: 320px;
    background: var(--color-bg);
    border-radius: 50% 50% 10px 10px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__avatar-svg {
    width: 100%;
    height: 100%;
}

.hero__badge {
    position: absolute;
    top: -10px;
    right: 30px;
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero__wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero__wave svg {
    width: 100%;
    height: 80px;
}

/* ========== About ========== */
.about__grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
    margin-bottom: 60px;
}

.about__image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about__image-placeholder {
    width: 100%;
    display: block;
}

.about__heading {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 4px;
}

.about__title-badge {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    vertical-align: middle;
    margin-left: 6px;
}

.about__role {
    font-size: 16px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.about__bio {
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: 28px;
}

.about__credentials {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.credential {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.credential__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.credential strong {
    display: block;
    font-size: 15px;
    color: var(--color-text);
}

.credential span {
    font-size: 13px;
    color: var(--color-text-light);
}

/* Timeline */
.timeline {
    margin-bottom: 48px;
}

.timeline__title,
.expertise__title,
.testimonials__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 28px;
    text-align: center;
}

.timeline__list {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.timeline__list::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline__item {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
    position: relative;
}

.timeline__dot {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 4px solid var(--color-bg);
    box-shadow: 0 0 0 3px var(--color-border);
    position: relative;
    z-index: 1;
    margin-top: 4px;
}

.timeline__card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    flex: 1;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

.timeline__card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.timeline__year {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline__card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin: 4px 0;
}

.timeline__card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Expertise Tags */
.expertise__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.tag {
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    background: rgba(27, 58, 92, 0.06);
    border: 1px solid rgba(27, 58, 92, 0.12);
    border-radius: 50px;
    transition: all var(--transition);
}

.tag:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ========== Services ========== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
}

.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-card__icon {
    margin-bottom: 20px;
}

.service-card__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 18px;
}

.service-card__list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-card__list li {
    font-size: 14px;
    color: var(--color-text);
    padding-left: 20px;
    position: relative;
}

.service-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-secondary);
}

/* ========== Cases ========== */
.cases__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
    margin-bottom: 60px;
}

.case-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
}

.case-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.case-card__tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(27, 58, 92, 0.08);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.case-card__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.4;
}

.case-card__desc {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.case-card__result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.case-card__result-label {
    font-size: 13px;
    color: var(--color-text-lighter);
}

.case-card__result-number {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
}

/* Testimonials */
.testimonials {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonials__track {
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

.testimonial {
    padding: 0 20px;
    transition: opacity var(--transition);
}

.testimonial__text {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
    font-style: italic;
    margin-bottom: 28px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    padding: 0 16px;
}

.testimonial__text::before,
.testimonial__text::after {
    font-size: 48px;
    color: var(--color-border);
    line-height: 1;
    position: absolute;
}

.testimonial__text::before {
    content: '\201C';
    left: -20px;
    top: -12px;
}

.testimonial__text::after {
    content: '\201D';
    right: -20px;
    bottom: -30px;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: 14px;
    justify-content: center;
}

.testimonial__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.testimonial__author strong {
    display: block;
    font-size: 15px;
    color: var(--color-text);
}

.testimonial__author span {
    font-size: 13px;
    color: var(--color-text-light);
}

.testimonials__controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 32px;
}

.testimonials__btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    transition: all var(--transition);
}

.testimonials__btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.testimonials__dots {
    display: flex;
    gap: 8px;
}

.testimonials__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
}

.testimonials__dot--active {
    background: var(--color-primary);
    width: 28px;
    border-radius: 5px;
}

/* ========== Contact ========== */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 48px;
    align-items: start;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.contact__info-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.contact__info-card:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.contact__info-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: rgba(27, 58, 92, 0.06);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.contact__info-card strong {
    display: block;
    font-size: 15px;
    color: var(--color-text);
    margin-bottom: 2px;
}

.contact__info-card span {
    font-size: 14px;
    color: var(--color-text-light);
}

/* Form */
.contact__form {
    background: var(--color-bg);
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-required {
    color: var(--color-error);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(27, 58, 92, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-lighter);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-input--error {
    border-color: var(--color-error);
}

.form-error {
    display: block;
    font-size: 13px;
    color: var(--color-error);
    margin-top: 4px;
    min-height: 16px;
}

.form-note {
    font-size: 13px;
    color: var(--color-text-lighter);
    margin-top: 12px;
    text-align: center;
}

/* ========== Footer ========== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.75);
    padding-top: 60px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 40px;
    padding-bottom: 40px;
}

.logo--footer .logo__name {
    color: #fff;
}

.logo--footer .logo__title {
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.footer__desc {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.8;
}

.footer__heading {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer__links a {
    font-size: 14px;
    transition: color var(--transition);
}

.footer__links a:hover {
    color: var(--color-secondary);
}

.footer__contact p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-primary-light);
    transform: translateY(-4px);
}

/* ========== Scroll Reveal ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Toast / Success Message ========== */
.toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--color-success);
    color: #fff;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: all var(--transition);
}

.toast--show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ========== Responsive ========== */

/* Tablet & Small Desktop */
@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__desc {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__stats {
        justify-content: center;
    }

    .hero__visual {
        order: -1;
    }

    .hero__avatar {
        width: 200px;
        height: 240px;
    }

    .hero__badge {
        top: -5px;
        right: 10px;
        width: 60px;
        height: 60px;
    }

    .about__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about__image {
        max-width: 260px;
        margin: 0 auto;
    }

    .credential {
        justify-content: center;
        text-align: left;
    }

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

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

/* Mobile */
@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .section__header {
        margin-bottom: 40px;
    }

    /* Mobile Nav */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg);
        box-shadow: var(--shadow-xl);
        padding: 100px 32px 40px;
        transition: right var(--transition);
        z-index: 1000;
    }

    .nav--open {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: 4px;
    }

    .nav__link {
        font-size: 17px;
        padding: 12px 16px;
    }

    .hamburger {
        display: flex;
    }

    /* Mobile overlay */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }

    .nav-overlay--visible {
        opacity: 1;
        visibility: visible;
    }

    /* Hero */
    .hero__name {
        font-size: 36px;
    }

    .hero__stats {
        gap: 20px;
    }

    .stat__number {
        font-size: 22px;
    }

    .hero__avatar {
        width: 160px;
        height: 190px;
    }

    .hero__badge {
        width: 50px;
        height: 50px;
        right: 0;
    }

    /* Services */
    .services__grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    /* Cases */
    .cases__grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 40px;
    }

    /* Contact */
    .contact__form {
        padding: 24px;
    }

    /* Footer */
    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* Small phones */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero__actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero__stats {
        flex-wrap: wrap;
        gap: 16px;
    }

    .timeline__card {
        padding: 16px;
    }

    .case-card {
        padding: 24px 20px;
    }
}