:root {
    --paper: #F4EAD5;
    --paper-warm: #EBE0C7;
    --paper-deep: #E0D2B0;
    --ink: #2A1810;
    --ink-soft: #5C4636;
    --ink-faint: #8A7561;
    --accent: #C76E3A;
    --accent-deep: #A85628;
    --ochre: #C99548;
    --plum: #7B2E41;
    --teal: #2F4F4F;
    --rule: rgba(42, 24, 16, 0.12);
    --rule-strong: rgba(42, 24, 16, 0.22);
    --card-bg: rgba(255, 255, 255, 0.55);
    --card-bg-deep: rgba(255, 255, 255, 0.75);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid rgba(199, 110, 58, 0.35);
    transition: color 0.15s ease, border-color 0.15s ease;
}

a:hover {
    color: var(--accent-deep);
    border-bottom-color: var(--accent-deep);
}

/* ---------- Site header + nav ---------- */

.site-header {
    padding: 22px 24px 0;
    max-width: 1120px;
    margin: 0 auto;
}

.site-header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: space-between;
}

.site-header .brand {
    display: flex;
    align-items: center;
    gap: 14px;
    border: none;
}
.site-header .brand:hover { border: none; }

.site-header img {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(42, 24, 16, 0.18);
}

.site-header .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-header .brand-cn {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
}

.site-header .brand-en {
    font-size: 12px;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-left: auto;
}

.site-nav a {
    color: var(--ink-soft);
    border: none;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 4px;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.lang-switch {
    font-size: 13px;
    color: var(--ink-faint);
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.lang-switch a {
    color: var(--ink-faint);
    border: none;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.15s ease, color 0.15s ease;
}

.lang-switch a:hover {
    color: var(--accent);
    background: rgba(199, 110, 58, 0.08);
}

.lang-switch a.current {
    color: var(--ink);
    font-weight: 600;
    cursor: default;
}

.lang-switch a.current:hover {
    background: transparent;
    color: var(--ink);
}

/* ---------- Hero ---------- */

.hero {
    padding: 56px 24px 80px;
}

.hero-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
}

.hero-text h1 {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-style: italic;
    font-weight: 600;
    font-size: 56px;
    margin: 0 0 6px;
    color: var(--ink);
    letter-spacing: 0.01em;
}

.hero-text .name-en {
    font-family: "New York", "Times New Roman", Georgia, serif;
    font-size: 18px;
    color: var(--ink-faint);
    letter-spacing: 0.14em;
    margin-bottom: 28px;
}

.hero-text .tagline {
    font-size: 22px;
    color: var(--ink);
    margin: 0 0 16px;
    line-height: 1.5;
    font-weight: 500;
}

.hero-text .tagline-sub {
    font-size: 15px;
    color: var(--ink-soft);
    margin: 0 0 32px;
    line-height: 1.7;
    max-width: 480px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    background: var(--ink);
    color: var(--paper);
    border-radius: 12px;
    border: none;
    font-weight: 600;
    transition: background 0.15s ease, transform 0.1s ease;
}

.cta-primary:hover {
    background: #1A0E08;
    color: var(--paper);
    border: none;
    transform: translateY(-1px);
}

.cta-apple-glyph {
    width: 22px;
    height: 22px;
    background-color: var(--paper);
    -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M17.05 20.28c-.98.95-2.05.8-3.08.35-1.09-.46-2.09-.48-3.24 0-1.44.62-2.2.44-3.06-.35C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.57 1.5-1.31 2.99-2.54 4.08zM12 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z'/></svg>") no-repeat center;
    mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M17.05 20.28c-.98.95-2.05.8-3.08.35-1.09-.46-2.09-.48-3.24 0-1.44.62-2.2.44-3.06-.35C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.57 1.5-1.31 2.99-2.54 4.08zM12 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z'/></svg>") no-repeat center;
}

.cta-primary > span:not(.cta-apple-glyph) {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.1;
}

.cta-small {
    font-size: 10px;
    letter-spacing: 0.08em;
    opacity: 0.85;
}

.cta-large {
    font-size: 15px;
    font-weight: 600;
}

.cta-secondary {
    font-size: 14px;
    color: var(--accent);
    border: none;
    font-weight: 500;
}

.cta-secondary:hover {
    border: none;
    color: var(--accent-deep);
}

.hero-meta {
    font-size: 12px;
    color: var(--ink-faint);
    letter-spacing: 0.04em;
    margin: 0;
}

/* ---------- Hero device mockup ---------- */

.hero-device {
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-frame {
    width: 290px;
    height: 590px;
    background: #1a1a1a;
    border-radius: 44px;
    padding: 12px;
    box-shadow:
        0 30px 60px -20px rgba(42, 24, 16, 0.35),
        0 0 0 2px rgba(42, 24, 16, 0.4),
        inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    position: relative;
}

.device-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 26px;
    background: #1a1a1a;
    border-radius: 16px;
    z-index: 2;
}

.device-screen {
    width: 100%;
    height: 100%;
    background: var(--paper);
    border-radius: 32px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.mock-statusbar {
    display: flex;
    justify-content: space-between;
    padding: 14px 22px 4px;
    font-size: 12px;
    color: var(--ink);
    font-weight: 600;
}

.mock-status-icons {
    letter-spacing: -1px;
    font-size: 11px;
}

.mock-content {
    flex: 1;
    padding: 24px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;
}

.mock-card {
    background: var(--card-bg-deep);
    border: 1px solid var(--rule);
    border-radius: 14px;
    padding: 12px 14px;
    transform: rotate(-0.4deg);
}

.mock-card:nth-child(2) {
    transform: rotate(0.3deg);
}

.mock-eyebrow {
    font-size: 10px;
    color: var(--ink-faint);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.mock-target-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mock-blob {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    box-shadow: 0 2px 6px rgba(42, 24, 16, 0.2), inset 0 -3px 8px rgba(0,0,0,0.12);
    flex-shrink: 0;
}

.mock-target-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mock-hex {
    font-family: "SF Mono", "Menlo", monospace;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
}

.mock-sub {
    font-size: 11px;
    color: var(--ink-faint);
}

.mock-recipe {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

.mock-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
}

.mock-swatch {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 1px solid var(--rule);
    flex-shrink: 0;
}

.mock-name {
    color: var(--ink);
    flex: 1;
}

.mock-pct {
    font-family: "SF Mono", "Menlo", monospace;
    color: var(--ink-soft);
    font-weight: 600;
}

.mock-card-save {
    text-align: center;
    background: var(--ink);
    color: var(--paper);
    font-size: 13px;
    font-weight: 600;
    padding: 12px;
    margin-top: auto;
    border-radius: 14px;
    border: 1px solid var(--ink);
    transform: rotate(-0.2deg);
}

/* ---------- Generic section ---------- */

.section {
    padding: 88px 24px;
}

.section-alt {
    background: var(--paper-warm);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
}

.section-inner {
    max-width: 1080px;
    margin: 0 auto;
}

.eyebrow {
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 600;
    margin: 0 0 10px;
}

.section-title {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 36px;
    font-weight: 600;
    color: var(--ink);
    margin: 0 0 18px;
    line-height: 1.25;
}

.section-lead {
    font-size: 16px;
    color: var(--ink-soft);
    max-width: 720px;
    margin: 0 0 48px;
    line-height: 1.75;
}

/* ---------- Features ---------- */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--rule);
    border-radius: 14px;
    padding: 24px 22px;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
    border-color: var(--rule-strong);
    background: var(--card-bg-deep);
}

.feature-icon {
    font-size: 30px;
    margin-bottom: 12px;
    line-height: 1;
}

.feature-card h3 {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 10px;
    color: var(--ink);
}

.feature-card p {
    font-size: 14px;
    color: var(--ink-soft);
    margin: 0 0 8px;
    line-height: 1.65;
}

.feature-card .feature-note {
    font-size: 12px;
    color: var(--ink-faint);
    border-top: 1px dashed var(--rule);
    padding-top: 8px;
    margin-top: 10px;
    margin-bottom: 0;
}

/* ---------- Steps ---------- */

.steps {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.step {
    background: var(--card-bg-deep);
    border: 1px solid var(--rule);
    border-radius: 14px;
    padding: 22px 22px 18px;
}

.step-num {
    width: 36px;
    height: 36px;
    background: var(--ink);
    color: var(--paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-family: "New York", Georgia, serif;
    font-size: 16px;
    margin-bottom: 14px;
}

.step-body h3 {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 19px;
    font-weight: 600;
    margin: 0 0 8px;
    color: var(--ink);
}

.step-body p {
    font-size: 14px;
    color: var(--ink-soft);
    margin: 0 0 16px;
    line-height: 1.65;
}

.step-mock {
    margin-top: 14px;
    padding: 14px;
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 10px;
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-mock-1 {
    position: relative;
}

.mock-mini-wheel {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        #C76E3A, #C99548, #6B8446, #2F4F4F, #70879C, #7B2E41, #C76E3A
    );
    box-shadow: 0 2px 6px rgba(42, 24, 16, 0.2), inset 0 -4px 10px rgba(0,0,0,0.18);
    position: relative;
}

.mock-mini-pin {
    width: 10px;
    height: 10px;
    background: var(--ink);
    border: 2px solid var(--paper);
    border-radius: 50%;
    position: absolute;
    right: 30%;
    top: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.mock-mini-readout {
    position: absolute;
    right: 18px;
    bottom: 14px;
    font-family: "SF Mono", "Menlo", monospace;
    font-size: 12px;
    color: var(--ink);
    background: var(--card-bg-deep);
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid var(--rule);
}

.step-mock-2 {
    gap: 8px;
    justify-content: center;
}

.mock-chip {
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    color: var(--ink-soft);
    background: var(--paper-warm);
    border: 1px solid var(--rule);
    font-weight: 500;
}

.mock-chip-active {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}

.step-mock-3 {
    flex-direction: column;
    gap: 6px;
    align-items: stretch;
}

.mock-mini-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--ink-soft);
}

.mock-mini-row .mock-swatch {
    width: 14px;
    height: 14px;
}

.mock-mini-row .mock-pct {
    margin-left: auto;
    font-family: "SF Mono", "Menlo", monospace;
    font-size: 11px;
}

/* ---------- Pricing ---------- */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 24px;
}

.price-card {
    background: var(--card-bg);
    border: 1px solid var(--rule);
    border-radius: 16px;
    padding: 28px 24px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.price-card-highlight {
    border-color: var(--accent);
    background: var(--card-bg-deep);
    box-shadow: 0 6px 20px -10px rgba(199, 110, 58, 0.35);
}

.price-badge {
    position: absolute;
    top: -10px;
    right: 18px;
    background: var(--accent);
    color: var(--paper);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border-radius: 999px;
}

.price-tier {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--ink);
}

.price-amount {
    font-size: 32px;
    font-weight: 600;
    color: var(--ink);
    margin: 0 0 4px;
    font-family: "New York", Georgia, serif;
}

.price-period-inline {
    font-size: 15px;
    color: var(--ink-faint);
    font-weight: 400;
}

.price-period {
    font-size: 13px;
    color: var(--ink-faint);
    margin: 0 0 20px;
}

.price-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.price-features li {
    font-size: 14px;
    color: var(--ink-soft);
    padding: 6px 0 6px 22px;
    position: relative;
}

.price-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 600;
}

.pricing-note {
    font-size: 13px;
    color: var(--ink-faint);
    text-align: center;
    margin-top: 24px;
    line-height: 1.7;
}

/* ---------- About ---------- */

.about-prose p {
    font-size: 16px;
    color: var(--ink-soft);
    line-height: 1.85;
    margin: 0 0 18px;
    max-width: 760px;
}

.about-prose strong { color: var(--ink); }

.about-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--rule);
}

.about-meta-item p { margin: 0; }

.about-meta-label {
    font-size: 11px;
    color: var(--ink-faint);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 6px !important;
}

.about-meta-value {
    font-size: 14px;
    color: var(--ink);
    font-weight: 500;
}

/* ---------- FAQ ---------- */

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 820px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--rule);
    border-radius: 12px;
    padding: 16px 22px;
    transition: background 0.15s ease;
}

.faq-item[open] {
    background: var(--card-bg-deep);
    border-color: var(--rule-strong);
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--ink);
    font-size: 15px;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: "+";
    color: var(--accent);
    font-size: 22px;
    font-weight: 400;
    transition: transform 0.15s ease;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item p {
    margin: 14px 0 0;
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.75;
}

/* ---------- Contact ---------- */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.contact-card {
    background: var(--card-bg-deep);
    border: 1px solid var(--rule);
    border-radius: 14px;
    padding: 22px;
}

.contact-card p { margin: 0; }

.contact-label {
    font-size: 11px;
    color: var(--ink-faint);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 6px !important;
}

.contact-value {
    font-size: 16px;
    color: var(--ink);
    font-weight: 600;
    margin-bottom: 8px !important;
}

.contact-hint {
    font-size: 12px;
    color: var(--ink-faint);
    line-height: 1.6;
}

/* ---------- Document pages (privacy.html / terms.html) ---------- */

.doc-back {
    max-width: 760px;
    margin: 18px auto 0;
    padding: 0 24px;
}

.doc-back a {
    font-size: 13px;
    color: var(--ink-faint);
    border: none;
    letter-spacing: 0.04em;
}

.doc-back a:hover {
    color: var(--accent);
}

.doc {
    max-width: 760px;
    margin: 0 auto;
    padding: 36px 24px 80px;
}

.doc h1 {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-weight: 600;
    font-size: 32px;
    margin: 0 0 8px;
    color: var(--ink);
    border-bottom: 1px solid var(--rule);
    padding-bottom: 18px;
}

.doc h2 {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-weight: 600;
    font-size: 22px;
    margin: 42px 0 14px;
    color: var(--ink);
}

.doc h3 {
    font-size: 17px;
    font-weight: 600;
    margin: 28px 0 10px;
    color: var(--ink);
}

.doc p {
    margin: 0 0 16px;
    color: var(--ink-soft);
}

.doc ul, .doc ol {
    padding-left: 1.6em;
    margin: 0 0 16px;
    color: var(--ink-soft);
}

.doc li {
    margin-bottom: 6px;
}

.doc strong {
    color: var(--ink);
}

.doc blockquote {
    margin: 18px 0;
    padding: 12px 18px;
    background: rgba(201, 149, 72, 0.08);
    border-left: 3px solid var(--ochre);
    color: var(--ink-soft);
}

.doc blockquote p:last-child { margin-bottom: 0; }

.doc code {
    font-family: "SF Mono", "Menlo", Consolas, monospace;
    font-size: 0.92em;
    background: rgba(42, 24, 16, 0.06);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--ink);
}

.doc table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 14px;
}

.doc th, .doc td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--rule);
}

.doc th {
    background: rgba(201, 149, 72, 0.1);
    font-weight: 600;
    color: var(--ink);
}

.doc td { color: var(--ink-soft); }

.doc hr {
    border: none;
    border-top: 1px solid var(--rule);
    margin: 36px 0;
}

/* ---------- Footer ---------- */

.site-footer {
    background: var(--paper-warm);
    border-top: 1px solid var(--rule);
    margin-top: 0;
}

.footer-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 56px 24px 32px;
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 48px;
}

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

.footer-brand img {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(42, 24, 16, 0.18);
}

.footer-brand-name {
    font-family: "New York", "Times New Roman", Georgia, "Songti SC", serif;
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin: 0 0 4px;
}

.footer-brand-tagline {
    font-size: 13px;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0;
    max-width: 280px;
}

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

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col-title {
    font-size: 12px;
    color: var(--ink);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 0 0 6px;
}

.footer-col a {
    color: var(--ink-soft);
    border: none;
    font-size: 13px;
    transition: color 0.15s ease;
}

.footer-col a:hover {
    color: var(--accent);
    border: none;
}

.footer-bottom {
    max-width: 1080px;
    margin: 0 auto;
    padding: 18px 24px 36px;
    border-top: 1px solid var(--rule);
    font-size: 12px;
    color: var(--ink-faint);
    text-align: center;
    line-height: 1.9;
}

.footer-bottom p { margin: 0; }

.footer-divider {
    margin: 0 8px;
    color: var(--rule-strong);
}

.icp-link {
    color: var(--ink-faint);
    border: none;
    letter-spacing: 0.04em;
}

.icp-link:hover {
    color: var(--ink-soft);
    border: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .site-nav { display: none; }
    .hero { padding: 40px 24px 60px; }
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-text .tagline-sub { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-device { order: -1; }
    .device-frame { transform: scale(0.85); transform-origin: center; }
    .section { padding: 64px 24px; }
    .section-title { font-size: 28px; }
    .steps { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-links { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
    .site-header { padding: 18px 18px 0; }
    .site-header img { width: 38px; height: 38px; }
    .site-header .brand-cn { font-size: 16px; }
    .hero-text h1 { font-size: 40px; }
    .hero-text .tagline { font-size: 18px; }
    .device-frame {
        width: 260px;
        height: 530px;
        transform: scale(1);
    }
    .doc { padding: 28px 20px 60px; }
    .doc h1 { font-size: 26px; }
    .doc h2 { font-size: 19px; }
    .doc table { font-size: 13px; }
    .doc th, .doc td { padding: 8px 10px; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
}