:root {
 --bg: #f6f1e7;
 --bg-elevated: #fffdf7;
 --bg-sunken: #efe9dc;
 --brand: #6b9080;
 --brand-soft: rgba(107, 144, 128, 0.12);
 --wood: #9f8c76;
 --wood-soft: rgba(159, 140, 118, 0.14);
 --text: #3d3530;
 --text-secondary: #697065;
 --text-muted: #9a9e94;
 --border: rgba(108, 120, 98, 0.18);
 --border-strong: rgba(108, 120, 98, 0.32);
 --shadow: 0 1px 3px rgba(60, 70, 50, 0.06);
 --shadow-md: 0 2px 8px rgba(60, 70, 50, 0.08);
 --shadow-lg: 0 8px 30px rgba(60, 70, 50, 0.12);
 --radius: 10px;
 --radius-sm: 7px;
 --serif: "Songti SC", "STSong", "Georgia", "Noto Serif SC", serif;
 --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
 --danger: #b85450;
}

[data-theme="dark"] {
 --bg: #1a1c19;
 --bg-elevated: #232622;
 --bg-sunken: #1e211d;
 --brand: #8db9a3;
 --brand-soft: rgba(141, 185, 163, 0.12);
 --wood: #b09a82;
 --wood-soft: rgba(176, 154, 130, 0.14);
 --text: #e0ddd5;
 --text-secondary: #a8aaa3;
 --text-muted: #7a7d74;
 --border: rgba(218, 211, 190, 0.13);
 --border-strong: rgba(218, 211, 190, 0.28);
 --shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
 --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.25);
 --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
 --danger: #d06a66;
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
 background: var(--bg);
 color: var(--text);
 font-family: var(--sans);
 font-size: 15px;
 line-height: 1.75;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 min-height: 100vh;
 overflow-x: hidden;
}

.back-home {
 position: fixed;
 top: 1.4rem;
 left: 1.4rem;
 z-index: 100;
 display: flex;
 align-items: center;
 gap: 0.4rem;
 padding: 0.5rem 1rem;
 background: var(--bg-elevated);
 border: 1px solid var(--border);
 border-radius: 999px;
 color: var(--text-secondary);
 text-decoration: none;
 font-size: 0.85rem;
 font-family: var(--serif);
 box-shadow: var(--shadow);
 transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.back-home:hover {
 border-color: var(--border-strong);
 box-shadow: var(--shadow-md);
 transform: translateX(-2px);
}

.back-home .icon {
 width: 1em;
 height: 1em;
}

.theme-btn {
 position: fixed;
 top: 1.4rem;
 right: 1.4rem;
 z-index: 100;
 width: 2.6rem;
 height: 2.6rem;
 border-radius: 50%;
 border: 1px solid var(--border);
 background: var(--bg-elevated);
 color: var(--text-secondary);
 cursor: pointer;
 box-shadow: var(--shadow);
 display: flex;
 align-items: center;
 justify-content: center;
 transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
 -webkit-tap-highlight-color: transparent;
}

.theme-btn:hover {
 border-color: var(--border-strong);
 box-shadow: var(--shadow-md);
 transform: translateY(-1px);
}

.theme-btn:active { transform: scale(0.94); }

.theme-btn .icon {
 width: 1.1rem;
 height: 1.1rem;
}

.theme-btn .icon-moon,
.theme-btn .icon-sun {
 position: absolute;
 transition: opacity 0.35s ease, transform 0.35s ease;
}

.theme-btn .icon-sun {
 opacity: 0;
 transform: rotate(-90deg) scale(0.4);
}

.theme-btn .icon-moon {
 opacity: 1;
 transform: rotate(0) scale(1);
}

[data-theme="dark"] .theme-btn .icon-moon {
 opacity: 0;
 transform: rotate(90deg) scale(0.4);
}

[data-theme="dark"] .theme-btn .icon-sun {
 opacity: 1;
 transform: rotate(0) scale(1);
}

.capsule-container {
 max-width: 680px;
 margin: 0 auto;
 padding: 5rem 1.5rem 4rem;
}

.capsule-header {
 text-align: center;
 margin-bottom: 3rem;
}

.header-leaf {
 font-size: 2rem;
 margin-bottom: 0.5rem;
 display: inline-block;
}

.capsule-title {
 font-family: var(--serif);
 font-size: 2.2rem;
 font-weight: 600;
 letter-spacing: 0.1em;
 color: var(--text);
 margin-bottom: 0.4rem;
}

.header-line {
 width: 48px;
 height: 2px;
 background: var(--brand);
 margin: 0.5rem auto 1rem;
 border-radius: 1px;
}

.capsule-subtitle {
 font-size: 0.9rem;
 color: var(--text-secondary);
 letter-spacing: 0.03em;
 font-family: var(--serif);
}

.auth-view {
 max-width: 420px;
 margin: 1rem auto 3rem;
}

.auth-hero {
 text-align: center;
 margin-bottom: 1.8rem;
}

.auth-hero-mark {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 72px;
 height: 72px;
 border-radius: 50%;
 background: var(--brand-soft);
 border: 1px solid var(--border);
 color: var(--brand);
 margin-bottom: 1rem;
}

.auth-hero-title {
 font-family: var(--serif);
 font-size: 1.4rem;
 font-weight: 600;
 color: var(--text);
 margin-bottom: 0.5rem;
 letter-spacing: 0.08em;
}

.auth-hero-subtitle {
 font-size: 0.85rem;
 color: var(--text-secondary);
 line-height: 1.85;
 font-family: var(--serif);
}

.auth-card {
 position: relative;
 background: var(--bg-elevated);
 border: 1px solid var(--border);
 border-radius: var(--radius);
 box-shadow: var(--shadow-md);
 overflow: hidden;
}

.auth-card::before {
 content: "";
 position: absolute;
 top: 0;
 left: 50%;
 transform: translateX(-50%);
 width: 60px;
 height: 4px;
 background: var(--brand);
 opacity: 0.6;
}

.auth-guide {
 text-align: center;
 padding: 2.4rem 1.8rem 1.8rem;
}

.auth-guide-mark {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 64px;
 height: 64px;
 border-radius: 50%;
 background: var(--brand-soft);
 border: 1px solid var(--border);
 font-size: 1.8rem;
 line-height: 1;
 margin-bottom: 1.1rem;
 animation: pulse-soft 3.6s ease-in-out infinite;
}

@keyframes pulse-soft {
 0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 var(--brand-soft); }
 50% { transform: scale(1.04); box-shadow: 0 0 0 12px transparent; }
}

.auth-guide-title {
 font-family: var(--serif);
 font-size: 1.28rem;
 letter-spacing: 0.1em;
 color: var(--text);
 margin: 0 0 0.7rem;
 font-weight: 600;
}

.auth-guide-desc {
 font-size: 0.88rem;
 line-height: 1.85;
 color: var(--text-muted);
 font-family: var(--serif);
 margin: 0 0 1.6rem;
 letter-spacing: 0.02em;
}

.auth-guide-desc .accent {
 display: block;
 margin-top: 0.5rem;
 font-size: 0.78rem;
 color: var(--text-secondary);
 letter-spacing: 0.12em;
 opacity: 0.85;
}

.auth-guide-divider {
 display: flex;
 align-items: center;
 gap: 0.6rem;
 margin: 0 auto 1.4rem;
 max-width: 180px;
 color: var(--text-muted);
 font-size: 0.7rem;
 letter-spacing: 0.2em;
 font-family: var(--serif);
}
.auth-guide-divider::before,
.auth-guide-divider::after {
 content: "";
 flex: 1;
 height: 1px;
 background: var(--border);
}

.auth-tabs {
 display: flex;
 border-bottom: 1px solid var(--border);
 background: var(--bg-sunken);
}

.auth-tab {
 flex: 1;
 padding: 0.95rem 1rem;
 border: none;
 background: transparent;
 color: var(--text-muted);
 font-size: 0.9rem;
 font-family: var(--serif);
 cursor: pointer;
 transition: color 0.25s ease, background-color 0.25s ease;
 letter-spacing: 0.08em;
 border-bottom: 2px solid transparent;
}

.auth-tab.active {
 color: var(--brand);
 font-weight: 600;
 background: var(--bg-elevated);
 border-bottom-color: var(--brand);
}

.auth-form {
 padding: 1.6rem;
}

.form-field {
 margin-bottom: 1.1rem;
}

.form-label {
 display: block;
 font-size: 0.78rem;
 color: var(--text-secondary);
 margin-bottom: 0.4rem;
 font-family: var(--serif);
 letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
 width: 100%;
 padding: 0.7rem 0.85rem;
 border: 1px solid var(--border);
 border-radius: var(--radius-sm);
 background: var(--bg);
 color: var(--text);
 font-size: 0.92rem;
 font-family: var(--sans);
 transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-textarea {
 resize: vertical;
 min-height: 100px;
 line-height: 1.75;
}

.form-input:focus,
.form-textarea:focus {
 outline: none;
 border-color: var(--brand);
 box-shadow: 0 0 0 3px var(--brand-soft);
 background: var(--bg-elevated);
}

.form-input::placeholder,
.form-textarea::placeholder {
 color: var(--text-muted);
 opacity: 0.7;
}

.form-row {
 display: flex;
 gap: 0.5rem;
 align-items: stretch;
}

.form-row .form-input { flex: 1; }

.form-hint {
 font-size: 0.76rem;
 color: var(--text-muted);
 margin-top: 0.35rem;
 font-family: var(--serif);
}

.form-counter {
 text-align: right;
 font-size: 0.74rem;
 color: var(--text-muted);
 margin-top: 0.3rem;
}

.btn-primary,
.btn-ghost,
.btn-danger {
 border: none;
 border-radius: var(--radius-sm);
 font-size: 0.88rem;
 font-family: var(--sans);
 cursor: pointer;
 display: inline-flex;
 align-items: center;
 justify-content: center;
 gap: 0.4rem;
 white-space: nowrap;
 transition: opacity 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, transform 0.2s ease;
}

.btn-primary {
 background: var(--brand);
 color: #fff;
 padding: 0.65rem 1.4rem;
 font-weight: 500;
}

.btn-primary:hover { opacity: 0.88; }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-ghost {
 background: transparent;
 color: var(--brand);
 border: 1px solid var(--border);
 padding: 0.55rem 1rem;
}

.btn-ghost:hover { border-color: var(--border-strong); }
.btn-ghost:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-danger {
 background: transparent;
 color: var(--danger);
 border: 1px solid var(--border);
 padding: 0.55rem 1rem;
}

.btn-danger:hover { border-color: var(--danger); }

.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.8rem; }
.btn-block { width: 100%; }

.auth-submit {
 width: 100%;
 margin-top: 0.4rem;
 padding: 0.95rem 1rem;
 font-size: 0.95rem;
 font-family: var(--serif);
 letter-spacing: 0.18em;
 position: relative;
 transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.auth-submit:hover {
 transform: translateY(-1px);
 box-shadow: var(--shadow-md);
}

.auth-submit:active {
 transform: translateY(0);
}

.send-code-btn {
 white-space: nowrap;
 min-width: 104px;
}

.auth-footer-note {
 text-align: center;
 margin-top: 1.4rem;
 font-family: var(--serif);
 font-size: 0.82rem;
 color: var(--text-muted);
 letter-spacing: 0.18em;
}

.feed-view {
 animation: fadeIn 0.4s ease;
}

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

.feed-topbar {
 display: flex;
 align-items: center;
 justify-content: space-between;
 margin-bottom: 1.5rem;
 gap: 0.8rem;
 flex-wrap: wrap;
}

.feed-user {
 font-family: var(--serif);
 font-size: 0.9rem;
 color: var(--text-secondary);
}

.feed-user .user-name {
 color: var(--text);
 font-weight: 500;
}

.feed-actions {
 display: flex;
 gap: 0.5rem;
}

.compose-capsule {
 background: var(--bg-elevated);
 border: 1px solid var(--border);
 border-radius: var(--radius);
 padding: 1.4rem;
 margin-bottom: 2rem;
 box-shadow: var(--shadow);
}

.compose-title {
 font-family: var(--serif);
 font-size: 1.05rem;
 font-weight: 600;
 color: var(--text);
 margin-bottom: 1.2rem;
 letter-spacing: 0.06em;
 display: flex;
 align-items: center;
 gap: 0.5rem;
}

.compose-title .icon {
 width: 1.1rem;
 height: 1.1rem;
 color: var(--brand);
}

.compose-notice {
 margin-top: 1rem;
 padding: 0.7rem 0.85rem;
 background: var(--wood-soft);
 border-left: 3px solid var(--wood);
 border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
 font-size: 0.8rem;
 color: var(--text-secondary);
 font-family: var(--serif);
 line-height: 1.7;
 display: flex;
 align-items: flex-start;
 gap: 0.5rem;
}

.compose-notice .icon {
 width: 1rem;
 height: 1rem;
 color: var(--wood);
 flex-shrink: 0;
 margin-top: 0.15rem;
}

.capsules-list {
 display: flex;
 flex-direction: column;
 gap: 1rem;
}

.list-title {
 font-family: var(--serif);
 font-size: 0.95rem;
 color: var(--text-secondary);
 letter-spacing: 0.06em;
 margin-bottom: 0.3rem;
 display: flex;
 align-items: center;
 gap: 0.4rem;
}

.list-title .icon {
 width: 1rem;
 height: 1rem;
 color: var(--brand);
}

.capsule-card {
 background: var(--bg-elevated);
 border: 1px solid var(--border);
 border-radius: var(--radius);
 padding: 1.2rem 1.3rem;
 box-shadow: var(--shadow);
 transition: box-shadow 0.3s ease, border-color 0.3s ease;
 animation: fadeIn 0.3s ease;
 position: relative;
}

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

.capsule-card.locked {
 border-left: 3px solid var(--wood);
}

.capsule-card.unlocked {
 border-left: 3px solid var(--brand);
}

.capsule-card-head {
 display: flex;
 align-items: flex-start;
 justify-content: space-between;
 gap: 0.8rem;
 margin-bottom: 0.7rem;
}

.capsule-card-title {
 font-family: var(--serif);
 font-size: 1rem;
 font-weight: 600;
 color: var(--text);
 letter-spacing: 0.03em;
 flex: 1;
 word-break: break-word;
}

.capsule-card-title.empty {
 color: var(--text-muted);
 font-style: italic;
 font-weight: 400;
}

.capsule-delete {
 background: none;
 border: none;
 color: var(--text-muted);
 cursor: pointer;
 padding: 0.25rem;
 display: flex;
 align-items: center;
 justify-content: center;
 flex-shrink: 0;
 border-radius: var(--radius-sm);
 transition: color 0.2s ease, background-color 0.2s ease;
}

.capsule-delete:hover {
 color: var(--danger);
 background: rgba(184, 84, 80, 0.08);
}

.capsule-delete .icon {
 width: 0.95rem;
 height: 0.95rem;
}

.capsule-meta {
 display: flex;
 flex-wrap: wrap;
 gap: 0.4rem 1.2rem;
 font-size: 0.78rem;
 color: var(--text-muted);
 margin-bottom: 0.7rem;
}

.meta-item {
 display: flex;
 align-items: center;
 gap: 0.3rem;
}

.meta-item .icon {
 width: 0.85rem;
 height: 0.85rem;
}

.meta-label {
 color: var(--text-muted);
}

.meta-value {
 color: var(--text-secondary);
}

.capsule-status {
 display: inline-flex;
 align-items: center;
 gap: 0.3rem;
 font-size: 0.74rem;
 padding: 0.15rem 0.6rem;
 border-radius: 999px;
 font-family: var(--serif);
 letter-spacing: 0.04em;
}

.capsule-status.locked {
 background: var(--wood-soft);
 color: var(--wood);
}

.capsule-status.unlocked {
 background: var(--brand-soft);
 color: var(--brand);
}

.capsule-status .icon {
 width: 0.8rem;
 height: 0.8rem;
}

.capsule-countdown {
 margin-top: 0.6rem;
 padding: 0.65rem 0.8rem;
 background: var(--bg-sunken);
 border-radius: var(--radius-sm);
 font-size: 0.82rem;
 color: var(--text-secondary);
 font-family: var(--serif);
 display: flex;
 align-items: center;
 gap: 0.4rem;
}

.capsule-countdown .icon {
 width: 0.9rem;
 height: 0.9rem;
 color: var(--wood);
}

.countdown-text {
 letter-spacing: 0.03em;
}

.countdown-text .num {
 color: var(--text);
 font-weight: 600;
}

.capsule-hint {
 margin-top: 0.5rem;
 font-size: 0.8rem;
 color: var(--text-muted);
 font-family: var(--serif);
 display: flex;
 align-items: flex-start;
 gap: 0.35rem;
}

.capsule-hint .icon {
 width: 0.85rem;
 height: 0.85rem;
 flex-shrink: 0;
 margin-top: 0.2rem;
 color: var(--wood);
}

.capsule-actions {
 margin-top: 0.9rem;
 display: flex;
 gap: 0.5rem;
 justify-content: flex-end;
}

.empty-state {
 text-align: center;
 padding: 3rem 1rem;
 color: var(--text-muted);
}

.empty-state-icon {
 font-size: 2.6rem;
 margin-bottom: 0.8rem;
 opacity: 0.6;
}

.empty-state-text {
 font-size: 0.92rem;
 font-family: var(--serif);
 letter-spacing: 0.04em;
 color: var(--text-secondary);
}

.empty-state-desc {
 font-size: 0.8rem;
 margin-top: 0.3rem;
}

.loading-state {
 text-align: center;
 padding: 2.5rem 0;
 color: var(--text-muted);
}

.spinner {
 width: 30px;
 height: 30px;
 border: 2px solid var(--border);
 border-top-color: var(--brand);
 border-radius: 50%;
 margin: 0 auto 0.7rem;
 animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-state p {
 font-size: 0.85rem;
 font-family: var(--serif);
}

.overlay {
 position: fixed;
 inset: 0;
 z-index: 200;
 background: rgba(40, 38, 33, 0.45);
 display: flex;
 align-items: center;
 justify-content: center;
 padding: 1.5rem;
 opacity: 0;
 transition: opacity 0.3s ease;
}

.overlay.open { opacity: 1; }

.sheet-panel {
 background: var(--bg-elevated);
 width: 100%;
 max-width: 520px;
 max-height: 85vh;
 border-radius: var(--radius);
 display: flex;
 flex-direction: column;
 box-shadow: var(--shadow-lg);
 transform: translateY(20px) scale(0.98);
 transition: transform 0.3s ease;
}

.overlay.open .sheet-panel { transform: translateY(0) scale(1); }

.sheet-header {
 display: flex;
 justify-content: space-between;
 align-items: center;
 padding: 1.1rem 1.3rem;
 border-bottom: 1px solid var(--border);
}

.sheet-title {
 font-family: var(--serif);
 font-size: 1rem;
 font-weight: 600;
 letter-spacing: 0.05em;
 color: var(--text);
 display: flex;
 align-items: center;
 gap: 0.45rem;
}

.sheet-title .icon {
 width: 1.05rem;
 height: 1.05rem;
 color: var(--brand);
}

.sheet-close {
 background: none;
 border: none;
 cursor: pointer;
 color: var(--text-muted);
 padding: 0.3rem;
 border-radius: var(--radius-sm);
 display: flex;
 align-items: center;
 justify-content: center;
 transition: color 0.2s ease, background-color 0.2s ease;
}

.sheet-close:hover {
 color: var(--text);
 background: var(--bg-sunken);
}

.sheet-close .icon {
 width: 1.1rem;
 height: 1.1rem;
}

.sheet-body {
 flex: 1;
 overflow-y: auto;
 padding: 1.3rem;
 -webkit-overflow-scrolling: touch;
}

.sheet-footer {
 display: flex;
 gap: 0.5rem;
 padding: 0.9rem 1.3rem;
 border-top: 1px solid var(--border);
}

.sheet-footer .btn-primary,
.sheet-footer .btn-ghost { flex: 1; }

.unlock-hint {
 font-size: 0.84rem;
 color: var(--text-secondary);
 font-family: var(--serif);
 margin-bottom: 1rem;
 line-height: 1.75;
}

.unlock-meta {
 margin-bottom: 0.8rem;
 font-size: 0.82rem;
 color: var(--text-muted);
}

.unlock-meta strong {
 color: var(--text);
 font-family: var(--serif);
 font-weight: 600;
}

.unlock-hint-box {
 margin-bottom: 1rem;
 padding: 0.7rem 0.85rem;
 background: var(--bg-sunken);
 border-radius: var(--radius-sm);
 font-size: 0.82rem;
 color: var(--text-secondary);
 font-family: var(--serif);
}

.unlock-hint-box .label {
 color: var(--text-muted);
 margin-right: 0.3rem;
}

.content-display {
 white-space: pre-wrap;
 word-break: break-word;
 font-size: 0.95rem;
 line-height: 1.85;
 color: var(--text);
 font-family: var(--sans);
 padding: 0.5rem 0;
}

.content-meta {
 margin-bottom: 1rem;
 padding-bottom: 1rem;
 border-bottom: 1px solid var(--border);
}

.content-meta-row {
 display: flex;
 gap: 0.4rem;
 font-size: 0.8rem;
 color: var(--text-muted);
 margin-bottom: 0.25rem;
}

.content-meta-row .label {
 color: var(--text-muted);
 min-width: 4rem;
}

.content-meta-row .value {
 color: var(--text-secondary);
}

.content-meta-row .value.title {
 color: var(--text);
 font-family: var(--serif);
 font-weight: 600;
}

.toast-container {
 position: fixed;
 bottom: 2rem;
 left: 50%;
 transform: translateX(-50%);
 z-index: 400;
 display: flex;
 flex-direction: column;
 gap: 0.5rem;
 align-items: center;
 pointer-events: none;
}

.toast {
 background: var(--text);
 color: var(--bg-elevated);
 padding: 0.65rem 1.5rem;
 border-radius: var(--radius-sm);
 font-size: 0.85rem;
 font-family: var(--serif);
 box-shadow: var(--shadow-lg);
 transform: translateY(80px);
 opacity: 0;
 transition: transform 0.3s ease, opacity 0.3s ease;
 pointer-events: auto;
 max-width: 90vw;
 text-align: center;
}

.toast.show {
 transform: translateY(0);
 opacity: 1;
}

.toast.error { background: var(--danger); color: #fff; }
.toast.success { background: var(--brand); color: #fff; }

.capsule-footer {
 text-align: center;
 margin-top: 3rem;
 padding-top: 2rem;
 border-top: 1px solid var(--border);
}

.capsule-footer p {
 font-family: var(--serif);
 font-size: 0.85rem;
 color: var(--text-muted);
 margin-bottom: 0.6rem;
 letter-spacing: 0.04em;
}

.footer-link {
 font-size: 0.82rem;
 color: var(--brand);
 text-decoration: none;
 font-family: var(--serif);
 transition: opacity 0.25s ease;
}

.footer-link:hover { opacity: 0.7; }

@media (max-width: 640px) {
 .capsule-container { padding: 4.5rem 1rem 3rem; }
 .capsule-title { font-size: 1.8rem; }
 .back-home { top: 1rem; left: 1rem; padding: 0.45rem 0.8rem; }
 .back-home span { display: none; }
 .theme-btn { top: 1rem; right: 1rem; }

 .auth-view { margin: 0.5rem auto 2rem; }
 .auth-form { padding: 1.2rem; }
 .auth-hero-title { font-size: 1.2rem; }
 .auth-guide { padding: 2rem 1.4rem 1.5rem; }
 .auth-guide-mark { width: 56px; height: 56px; font-size: 1.6rem; }
 .auth-guide-title { font-size: 1.15rem; }

 .compose-capsule { padding: 1.1rem; }
 .capsule-card { padding: 1rem 1.1rem; }

 .feed-topbar { flex-direction: column; align-items: stretch; }
 .feed-actions { justify-content: flex-end; }

 .sheet-panel { max-height: 90vh; }
 .sheet-body { padding: 1rem; }

 .capsule-meta { gap: 0.3rem 0.9rem; }
}

@media (max-width: 380px) {
 .capsule-title { font-size: 1.5rem; }
 .auth-tab { padding: 0.85rem 0.5rem; font-size: 0.85rem; }
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

::selection {
 background: var(--brand-soft);
 color: var(--text);
}

@media (prefers-reduced-motion: reduce) {
 *, *::before, *::after {
 animation-duration: 0.01ms !important;
 transition-duration: 0.01ms !important;
 }
}