/* ===================================================
  向阳护眼工程 - 修心向阳 · 护眼成长
  =================================================== */

/* ---------- VARIABLES ---------- */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --primary-bg: #eff6ff;
    --secondary: #0891b2;
    --secondary-light: #e0f2fe;
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --text-dark: #0f172a;
    --text: #334155;
    --text-light: #64748b;
    --text-white: #f1f5f9;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow: 0 4px 20px rgba(0,0,0,.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,.12);
    --transition: .35s cubic-bezier(.4,0,.2,1);
    --max-width: 1200px;
    --header-h: 72px;
}

/* ---------- RESET ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }

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

/* ---------- HEADER ---------- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,.06);
    z-index: 1000;
    transition: var(--transition);
}
.header--scrolled { box-shadow: 0 4px 30px rgba(0,0,0,.08); }
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 10px; }
.logo__icon { font-size: 28px; }
.logo__text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 1px;
}
.logo__text--light { color: var(--text-white); }

/* Nav */
.nav__list { display: flex; align-items: center; gap: 6px; }
.nav__link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    border-radius: var(--radius-xs);
    transition: var(--transition);
    white-space: nowrap;
}
.nav__link:hover { background: var(--primary-bg); color: var(--primary); }
.nav__link--cta {
    background: var(--primary);
    color: #fff !important;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
}
.nav__link--cta:hover { background: var(--primary-dark); transform: scale(1.03); }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- SECTION ---------- */
.section { padding: 100px 0; }
.section:nth-child(even) { background: var(--bg-alt); }
.section__header {
    text-align: center;
    margin-bottom: 60px;
}
.section__tag {
    display: inline-block;
    padding: 6px 18px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.section__tag--light { background: rgba(255,255,255,.15); color: #fff; }
.section__title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
}
.section__title--light { color: #fff; }
.section__desc {
    margin-top: 12px;
    font-size: 18px;
    color: var(--text-light);
}
.section__desc--light { color: var(--text-white); }

/* ---------- HERO ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-h);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 50%, #e0f2fe 100%);
}
.hero__bg {
    position: absolute;
    inset: 0;
    opacity: .4;
    background:
        radial-gradient(ellipse 600px 400px at 10% 30%, rgba(37,99,235,.08) 0%, transparent 70%),
        radial-gradient(ellipse 500px 500px at 90% 70%, rgba(2,132,199,.06) 0%, transparent 70%);
    pointer-events: none;
}
.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero__badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(37,99,235,.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(37,99,235,.15);
}
.hero__title {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.15;
    color: var(--text-dark);
    margin-bottom: 20px;
}
.text-accent {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero__sub-slogan {
    font-size: 20px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 16px;
    letter-spacing: 2px;
}
.hero__desc {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero__stats { display: flex; gap: 40px; }
.hero__stat { text-align: center; }
.hero__stat-num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}
.hero__stat-label { font-size: 13px; color: var(--text-light); }

/* Hero visual */
.hero__visual { position: relative; display: flex; justify-content: center; }
.hero__image-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
}
.hero__image {
    width: 100%;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3;
    object-fit: cover;
}
.hero__floating-card {
    position: absolute;
    background: #fff;
    padding: 12px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    font-weight: 600;
    font-size: 14px;
    color: var(--text-dark);
    animation: float 3s ease-in-out infinite;
}
.hero__floating-card--1 { top: 20px; right: -20px; animation-delay: 0s; }
.hero__floating-card--2 { bottom: 40px; left: -20px; animation-delay: 1.5s; }
.hero__floating-card--3 { top: 50%; left: -30px; animation-delay: .8s; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ---------- PROBLEM ---------- */
.problem__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.problem__card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
}
.problem__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: transparent;
}
.problem__card--solution {}
.problem__icon { font-size: 40px; margin-bottom: 16px; }
.problem__card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.problem__stat { margin-bottom: 12px; }
.problem__num {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}
.problem__card-desc { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ---------- SERVICES (公益服务) ---------- */
.services { background: var(--bg); }
.service-category {
    margin-bottom: 48px;
    padding: 40px;
    border-radius: var(--radius);
    background: var(--bg-alt);
    border: 1px solid var(--border);
}
.service-category:last-child { margin-bottom: 0; }
.service-category__header {
    text-align: center;
    margin-bottom: 32px;
}
.service-category__icon { font-size: 36px; display: block; margin-bottom: 12px; }
.service-category__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.service-category__desc { font-size: 15px; color: var(--text-light); }
.service-category__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.service-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
}
.service-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}
.service-item__num {
    display: inline-block;
    width: 28px;
    height: 28px;
    line-height: 28px;
    text-align: center;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 12px;
}
.service-item__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}
.service-item__desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}
.hide-desktop { display: none; }

/* ---------- PACKAGE COMPARE ---------- */
.package__compare {
    display: flex;
    align-items: stretch;
    gap: 20px;
    margin-bottom: 48px;
    justify-content: center;
}
.package__compare-card {
    flex: 1;
    max-width: 380px;
    border-radius: var(--radius);
    padding: 32px;
    border: 2px solid var(--border);
    transition: var(--transition);
}
.package__compare-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.package__compare-card--free {
    background: var(--primary-bg);
    border-color: var(--primary-light);
}
.package__compare-card--paid {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border-color: var(--primary-light);
}
.package__compare-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--text-dark); }
.package__compare-price { font-size: 15px; color: var(--primary); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.package__compare-price strong { font-size: 18px; }
.package__compare-card ul { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.package__compare-card li { font-size: 14px; color: var(--text); line-height: 1.5; }
.package__compare-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(255,255,255,.7);
    color: var(--text-light);
}
.package__compare-vs {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-light);
    padding: 0 4px;
}

/* ---------- HOW IT WORKS ---------- */
.how-it-works {
    background: var(--bg-alt);
    position: relative;
}
.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    position: relative;
    z-index: 1;
}
.step {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    flex: 1;
    max-width: 260px;
    transition: var(--transition);
}
.step:hover { border-color: var(--primary-light); box-shadow: var(--shadow); transform: translateY(-4px); }
.step__number {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-light);
    letter-spacing: 2px;
    margin-bottom: 8px;
}
.step__icon { font-size: 40px; margin-bottom: 16px; }
.step__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.step__desc { font-size: 14px; color: var(--text); line-height: 1.7; }
.step__arrow {
    font-size: 28px;
    color: var(--primary);
    padding: 36px 12px 0;
    font-weight: 300;
    flex-shrink: 0;
}

/* ---------- PACKAGE ---------- */
.package__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;
}
.package__card {
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    position: relative;
    transition: var(--transition);
}
.package__card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}
.package__card--popular {
    border-color: var(--primary);
    box-shadow: 0 8px 32px rgba(37,99,235,.15);
    transform: scale(1.04);
}
.package__card--popular:hover { transform: scale(1.04) translateY(-4px); }
.package__badge {
    display: inline-block;
    padding: 4px 14px;
    background: var(--bg-alt);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 16px;
}
.package__badge--popular {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
}
.package__name {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}
.package__price { margin-bottom: 24px; }
.package__amount {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary);
}
.package__period { font-size: 14px; color: var(--text-light); margin-left: 4px; }
.package__features { margin-bottom: 24px; display: flex; flex-direction: column; gap: 12px; }
.package__features li {
    font-size: 14px;
    color: var(--text);
    line-height: 1.6;
}
.package__guarantee {
    background: var(--primary-bg);
    border-radius: var(--radius-xs);
    padding: 12px 16px;
    font-size: 13px;
    color: var(--primary-dark);
    margin-bottom: 24px;
    line-height: 1.6;
    border-left: 3px solid var(--primary);
}
.package__guarantee strong { display: block; margin-bottom: 4px; }

/* ---------- ADVANTAGES ---------- */
.advantages {
    background: var(--bg);
    position: relative;
}
.advantages::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-light) 100%);
    opacity: .5;
    pointer-events: none;
}
.advantages__grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}
.advantage {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}
.advantage:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}
.advantage__icon-wrapper {
    width: 68px;
    height: 68px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.advantage__icon { font-size: 30px; }
.advantage__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.advantage__desc {
    font-size: 15px;
    color: var(--text);
    line-height: 1.8;
}

/* ---------- TESTIMONIALS ---------- */
.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.testimonial {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}
.testimonial:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}
.testimonial__stars { font-size: 16px; margin-bottom: 16px; letter-spacing: 2px; }
.testimonial__text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 24px;
    font-style: italic;
}
.testimonial__author { display: flex; align-items: center; gap: 14px; }
.testimonial__avatar {
    width: 44px;
    height: 44px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: var(--primary);
    flex-shrink: 0;
}
.testimonial__name {
    font-weight: 700;
    font-size: 15px;
    color: var(--text-dark);
}
.testimonial__detail { font-size: 13px; color: var(--text-light); }

/* ---------- PARTNERS ---------- */
.partners__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.partner__logo {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 28px 20px;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
}
.partner__logo:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* ---------- ABOUT ---------- */
.about__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about__text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text);
    margin-bottom: 16px;
}
.about__slogan-block {
    background: linear-gradient(135deg, var(--primary-bg), var(--secondary-light));
    border-radius: var(--radius-sm);
    padding: 24px 28px;
    margin-bottom: 24px;
    border-left: 4px solid var(--primary);
}
.about__slogan-line {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary-dark);
    line-height: 1.9;
    letter-spacing: 1px;
}
.about__founder {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--bg-alt);
    border-radius: var(--radius-sm);
}
.about__founder-avatar {
    width: 52px;
    height: 52px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}
.about__founder-name {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
}
.about__founder-title {
    font-size: 13px;
    color: var(--text-light);
}
.about__stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.about__stat { text-align: center; }
.about__stat-num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}
.about__stat-label { font-size: 13px; color: var(--text-light); }
.about__image {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
}
.about__image img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: block;
}
.about__image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(37,99,235,.9));
    padding: 60px 28px 28px;
    text-align: center;
}
.about__image-overlay p {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 6px;
}
.about__image-overlay span {
    color: rgba(255,255,255,.8);
    font-size: 14px;
}

/* ---------- CTA BANNER ---------- */
.cta-banner {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.cta-banner__title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.cta-banner__desc {
    font-size: 18px;
    color: rgba(255,255,255,.85);
    margin-bottom: 32px;
}
.cta-banner .btn--primary {
    background: #fff;
    color: var(--primary);
}
.cta-banner .btn--primary:hover { background: var(--bg-alt); }

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    text-align: center;
}
.btn--primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn--primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,.3); }
.btn--outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn--outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn--lg { padding: 16px 36px; font-size: 16px; }
.btn--block { width: 100%; display: flex; }

/* ---------- CONTACT ---------- */
.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact__form {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
}
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form__group { margin-bottom: 20px; }
.form__label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}
.form__input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 15px;
    color: var(--text-dark);
    background: var(--bg);
    transition: var(--transition);
    outline: none;
}
.form__input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.form__input::placeholder { color: var(--text-light); opacity: .6; }
.form__textarea { resize: vertical; min-height: 100px; }
.form__select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form__tip {
    font-size: 12px;
    color: var(--text-light);
    text-align: center;
    margin-top: 12px;
}

/* Contact info sidebar */
.contact__info { display: flex; flex-direction: column; gap: 24px; }
.contact__card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}
.contact__card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}
.contact__item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
}
.contact__icon { font-size: 20px; flex-shrink: 0; margin-top: 2px; }
.contact__label { font-size: 13px; color: var(--text-light); }
.contact__value { font-size: 15px; font-weight: 600; color: var(--text-dark); }
.contact__wechat {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
}
.contact__qrcode .qrcode-placeholder {
    width: 140px;
    height: 140px;
    background: var(--bg-alt);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin: 0 auto 16px;
}
.contact__qrcode p { font-weight: 600; font-size: 15px; color: var(--text-dark); }
.contact__qrcode-tip { font-weight: 400 !important; font-size: 13px !important; color: var(--text-light) !important; margin-top: 4px; }
.contact__card--slogan {
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
}
.contact__card--slogan p {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 8px;
}
.contact__card--slogan span {
    font-size: 14px;
    color: rgba(255,255,255,.8);
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 60px 0 0;
}
.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__desc { font-size: 14px; margin-top: 12px; opacity: .7; line-height: 1.7; }
.footer__heading {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}
.footer__links ul { display: flex; flex-direction: column; gap: 10px; }
.footer__links a {
    font-size: 14px;
    opacity: .7;
    transition: var(--transition);
}
.footer__links a:hover { opacity: 1; color: var(--primary-light); }
.footer__contact p { font-size: 14px; opacity: .7; margin-bottom: 8px; }
.footer__bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    opacity: .5;
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ===================================================
  RESPONSIVE
  =================================================== */

/* Tablet */
@media (max-width: 1024px) {
    .hero__title { font-size: 40px; }
    .hero__inner { gap: 40px; }
    .problem__grid { grid-template-columns: repeat(2, 1fr); }
    .advantages__grid { grid-template-columns: repeat(3, 1fr); }
    .package__grid { gap: 20px; }
    .package__card--popular { transform: scale(1.02); }
    .package__card--popular:hover { transform: scale(1.02) translateY(-4px); }
    .about__inner { gap: 40px; }
    .about__stats { gap: 24px; }
    .contact__inner { gap: 32px; }
    .steps { flex-wrap: wrap; gap: 20px; }
    .step { max-width: none; flex-basis: calc(50% - 20px); }
    .step__arrow { display: none; }
    .service-category__grid { grid-template-columns: repeat(3, 1fr); }
}

/* Phone */
@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .section__title { font-size: 28px; }
    .section__desc { font-size: 16px; }
    .section__header { margin-bottom: 40px; }

    /* Nav hamburger */
    .hamburger { display: flex; }
    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(255,255,255,.98);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px;
        transform: translateY(-110%);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
    }
    .nav.active { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav__list { flex-direction: column; gap: 4px; }
    .nav__link { display: block; padding: 12px 16px; font-size: 16px; }
    .nav__link--cta { text-align: center; }

    /* Hero */
    .hero { min-height: auto; padding: 120px 0 60px; }
    .hero__inner { grid-template-columns: 1fr; gap: 32px; }
    .hero__title { font-size: 34px; }
    .hero__desc { font-size: 16px; }
    .hero__stats { gap: 24px; justify-content: center; }
    .hero__actions { justify-content: center; }
    .hero__actions .btn { width: 100%; justify-content: center; }
    .hero__visual { display: none; }

    /* Grids */
    .problem__grid { grid-template-columns: 1fr; }
    .package__grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .package__card--popular { transform: none; }
    .package__card--popular:hover { transform: translateY(-4px); }
    .testimonials__grid { grid-template-columns: 1fr; }
    .advantages__grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
    .partners__grid { grid-template-columns: repeat(2, 1fr); }
    .about__inner { grid-template-columns: 1fr; }
    .about__image { display: none; }
    .about__stats { justify-content: center; }
    .contact__inner { grid-template-columns: 1fr; }
    .contact__form { padding: 24px; }
    .form__row { grid-template-columns: 1fr; }
    .footer__inner { grid-template-columns: 1fr; gap: 32px; }
    .cta-banner__title { font-size: 28px; }
    .cta-banner__desc { font-size: 16px; }

    /* Services mobile */
    .service-category { padding: 24px 20px; }
    .service-category__grid { grid-template-columns: 1fr; }
    .hide-desktop { display: block; }

    /* Package compare mobile */
    .package__compare { flex-direction: column; align-items: center; }
    .package__compare-card { max-width: 100%; }

    /* Steps mobile */
    .steps { flex-direction: column; align-items: stretch; }
    .step { max-width: none; }
}

/* Small phone */
@media (max-width: 480px) {
    .hero__title { font-size: 28px; }
    .hero__stats { flex-direction: column; align-items: center; gap: 16px; }
    .package__amount { font-size: 30px; }
    .about__stats { flex-direction: column; gap: 16px; }
}