/*
Theme Name: Viber TT5
Theme URI: https://www.viber-zh.com/
Description: 基于 Twenty Twenty-Five 的 Viber 中文资讯子主题，内置 Viber 下载、电脑版、常见问题、博客、关于页面模板，附带 SEO 元信息、结构化数据与全响应式布局。
Author: Viber TT5
Author URI: https://www.viber-zh.com/
Template: twentytwentyfive
Version: 1.0.0
Requires at least: 6.4
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: viber-tt5
Tags: blog, custom-menu, featured-images, translation-ready, block-styles, wide-blocks
*/

/* ---------------------------------------------------------
   1. 设计变量与基础样式
   --------------------------------------------------------- */
:root {
	--v-purple: #7360f2;
	--v-purple-dark: #5544d6;
	--v-purple-darker: #3d2fae;
	--v-purple-light: #9b8cff;
	--v-purple-soft: #f3f1ff;
	--v-ink: #16122e;
	--v-body: #47436a;
	--v-muted: #767299;
	--v-line: #e8e5f7;
	--v-bg: #ffffff;
	--v-soft: #f7f6ff;
	--v-gradient: linear-gradient(135deg, #9b8cff 0%, #7360f2 42%, #5544d6 100%);
	--v-gradient-soft: linear-gradient(135deg, #f6f4ff 0%, #eeebff 55%, #e6e1ff 100%);
	--v-radius: 18px;
	--v-radius-sm: 12px;
	--v-shadow: 0 24px 48px -30px rgba(37, 25, 110, 0.45);
	--v-shadow-hover: 0 30px 60px -26px rgba(37, 25, 110, 0.5);
	--v-container: 1180px;
	--v-header: 72px;
	--v-font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	--v-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
	scroll-padding-top: calc(var(--v-header) + 18px);
}

body {
	margin: 0;
	font-family: var(--v-font);
	font-size: 16px;
	line-height: 1.75;
	color: var(--v-body);
	background: var(--v-bg);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	word-break: break-word;
	overflow-x: hidden;
}

img,
svg,
video {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
}

a {
	color: var(--v-purple);
	text-decoration: none;
	transition: color 0.2s ease;
}

a:hover {
	color: var(--v-purple-dark);
}

h1,
h2,
h3,
h4,
h5,
h6 {
	margin: 0 0 0.6em;
	color: var(--v-ink);
	line-height: 1.35;
	font-weight: 700;
	letter-spacing: -0.01em;
}

h1 {
	font-size: clamp(30px, 4.4vw, 46px);
}

h2 {
	font-size: clamp(24px, 3vw, 32px);
}

h3 {
	font-size: clamp(19px, 2.2vw, 22px);
}

p {
	margin: 0 0 1.1em;
}

ul,
ol {
	margin: 0 0 1.2em;
	padding-left: 1.35em;
}

li {
	margin-bottom: 0.5em;
}

strong {
	color: var(--v-ink);
	font-weight: 700;
}

code {
	font-family: var(--v-mono);
	font-size: 0.92em;
	background: var(--v-purple-soft);
	color: var(--v-purple-darker);
	padding: 2px 6px;
	border-radius: 6px;
}

hr {
	border: 0;
	border-top: 1px solid var(--v-line);
	margin: 2.5em 0;
}

::selection {
	background: var(--v-purple);
	color: #fff;
}

:focus-visible {
	outline: 3px solid rgba(115, 96, 242, 0.45);
	outline-offset: 2px;
	border-radius: 4px;
}

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

.section {
	padding: 76px 0;
}

.section--soft {
	background: var(--v-soft);
}

.section--tight {
	padding: 52px 0;
}

.section-head {
	max-width: 720px;
	margin: 0 auto 44px;
	text-align: center;
}

.section-head .eyebrow {
	display: inline-block;
	margin-bottom: 14px;
	padding: 6px 14px;
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.08em;
	color: var(--v-purple-dark);
	background: var(--v-purple-soft);
	border-radius: 999px;
}

.section-head p {
	margin-bottom: 0;
	color: var(--v-muted);
	font-size: 16px;
}

.grid {
	display: grid;
	gap: 24px;
}

.grid-2 {
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
	grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
	display: grid;
	grid-template-columns: 1.05fr 0.95fr;
	gap: 48px;
	align-items: center;
}

.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	z-index: 999;
	padding: 10px 16px;
	background: var(--v-ink);
	color: #fff;
	border-radius: 0 0 8px 0;
}

.skip-link:focus {
	left: 0;
	color: #fff;
}

/* ---------------------------------------------------------
   3. 顶部导航
   --------------------------------------------------------- */
.site-header {
	position: sticky;
	top: 0;
	z-index: 90;
	height: var(--v-header);
	background: rgba(255, 255, 255, 0.9);
	backdrop-filter: saturate(180%) blur(14px);
	-webkit-backdrop-filter: saturate(180%) blur(14px);
	border-bottom: 1px solid rgba(232, 229, 247, 0.9);
}

.site-header .container {
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 20px;
}

.site-brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	color: var(--v-ink);
	font-weight: 800;
	font-size: 19px;
	letter-spacing: -0.02em;
}

.site-brand:hover {
	color: var(--v-ink);
}

.site-brand .brand-mark {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	border-radius: 12px;
	background: var(--v-gradient);
	box-shadow: 0 10px 22px -12px rgba(115, 96, 242, 0.9);
}

.site-brand .brand-mark svg {
	width: 21px;
	height: 21px;
	fill: #fff;
}

.site-brand small {
	display: block;
	font-size: 11px;
	font-weight: 500;
	letter-spacing: 0.14em;
	color: var(--v-muted);
	text-transform: uppercase;
	line-height: 1.2;
}

.primary-nav {
	display: flex;
	align-items: center;
	gap: 30px;
}

.primary-nav a {
	position: relative;
	color: var(--v-body);
	font-size: 15px;
	font-weight: 500;
	padding: 6px 0;
}

.primary-nav a::after {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	height: 2px;
	background: var(--v-gradient);
	border-radius: 2px;
	transform: scaleX(0);
	transform-origin: center;
	transition: transform 0.25s ease;
}

.primary-nav a:hover,
.primary-nav a.is-current {
	color: var(--v-purple-dark);
}

.primary-nav a:hover::after,
.primary-nav a.is-current::after {
	transform: scaleX(1);
}

.header-actions {
	display: flex;
	align-items: center;
	gap: 12px;
}

.nav-toggle {
	display: none;
	width: 42px;
	height: 42px;
	padding: 0;
	border: 1px solid var(--v-line);
	border-radius: 12px;
	background: #fff;
	cursor: pointer;
}

.nav-toggle span {
	display: block;
	width: 18px;
	height: 2px;
	margin: 3px auto;
	background: var(--v-ink);
	border-radius: 2px;
	transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
	transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
	transform: translateY(-5px) rotate(-45deg);
}

/* ---------------------------------------------------------
   4. 按钮与标签
   --------------------------------------------------------- */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 48px;
	padding: 0 26px;
	border: 1px solid transparent;
	border-radius: 999px;
	font-size: 15px;
	font-weight: 600;
	line-height: 1.2;
	cursor: pointer;
	transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn-primary {
	background: var(--v-gradient);
	color: #fff;
	box-shadow: 0 16px 30px -18px rgba(115, 96, 242, 0.9);
}

.btn-primary:hover {
	color: #fff;
	transform: translateY(-2px);
	box-shadow: 0 22px 38px -18px rgba(115, 96, 242, 0.95);
}

.btn-ghost {
	background: #fff;
	color: var(--v-ink);
	border-color: var(--v-line);
}

.btn-ghost:hover {
	color: var(--v-purple-dark);
	border-color: var(--v-purple-light);
	transform: translateY(-2px);
}

.btn-sm {
	min-height: 40px;
	padding: 0 18px;
	font-size: 14px;
}

.btn-light {
	background: #fff;
	color: var(--v-purple-dark);
	box-shadow: 0 18px 34px -22px rgba(0, 0, 0, 0.6);
}

.btn-light:hover {
	color: var(--v-purple-darker);
	transform: translateY(-2px);
}

.btn svg {
	width: 18px;
	height: 18px;
	fill: currentColor;
	flex-shrink: 0;
}

.tag {
	display: inline-flex;
	align-items: center;
	height: 26px;
	padding: 0 10px;
	font-size: 12px;
	font-weight: 600;
	color: var(--v-purple-dark);
	background: var(--v-purple-soft);
	border-radius: 999px;
}

.badge-row {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}

/* ---------------------------------------------------------
   5. 首页 Hero
   --------------------------------------------------------- */
.hero {
	position: relative;
	overflow: hidden;
	padding: 86px 0 92px;
	background: var(--v-gradient-soft);
}

.hero::before,
.hero::after {
	content: "";
	position: absolute;
	border-radius: 50%;
	filter: blur(10px);
	pointer-events: none;
}

.hero::before {
	width: 420px;
	height: 420px;
	top: -160px;
	right: -120px;
	background: radial-gradient(circle at 30% 30%, rgba(115, 96, 242, 0.28), rgba(115, 96, 242, 0) 68%);
}

.hero::after {
	width: 380px;
	height: 380px;
	bottom: -190px;
	left: -140px;
	background: radial-gradient(circle at 60% 40%, rgba(155, 140, 255, 0.32), rgba(155, 140, 255, 0) 70%);
}

.hero .container {
	position: relative;
	z-index: 2;
	display: grid;
	grid-template-columns: 1.05fr 0.95fr;
	gap: 54px;
	align-items: center;
}

.hero-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 7px 14px;
	margin-bottom: 20px;
	font-size: 13px;
	font-weight: 600;
	color: var(--v-purple-dark);
	background: rgba(255, 255, 255, 0.8);
	border: 1px solid rgba(115, 96, 242, 0.22);
	border-radius: 999px;
}

.hero-eyebrow .dot {
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: #2fc98a;
	box-shadow: 0 0 0 4px rgba(47, 201, 138, 0.16);
}

.hero h1 {
	margin-bottom: 18px;
	max-width: 620px;
}

.hero h1 .grad {
	background: var(--v-gradient);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.hero-lead {
	max-width: 560px;
	font-size: 17px;
	color: var(--v-body);
	margin-bottom: 28px;
}

.hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin-bottom: 26px;
}

.hero-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 22px;
	font-size: 13.5px;
	color: var(--v-muted);
}

.hero-meta span {
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.hero-meta svg {
	width: 16px;
	height: 16px;
	fill: var(--v-purple);
}

/* Hero 手机/桌面示意图（纯 CSS，无外部图片） */
.device-showcase {
	position: relative;
	min-height: 380px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.device-card {
	position: relative;
	width: 100%;
	max-width: 420px;
	padding: 22px;
	background: #fff;
	border-radius: 28px;
	box-shadow: 0 40px 70px -40px rgba(45, 29, 130, 0.55);
	border: 1px solid rgba(232, 229, 247, 0.9);
}

.device-card::after {
	content: "";
	position: absolute;
	inset: 0;
	border-radius: 28px;
	box-shadow: inset 0 1px 0 #fff;
	pointer-events: none;
}

.chat-head {
	display: flex;
	align-items: center;
	gap: 12px;
	padding-bottom: 16px;
	border-bottom: 1px solid var(--v-line);
	margin-bottom: 16px;
}

.chat-avatar {
	width: 42px;
	height: 42px;
	border-radius: 50%;
	background: var(--v-gradient);
	display: flex;
	align-items: center;
	justify-content: center;
	color: #fff;
	font-weight: 700;
	font-size: 15px;
}

.chat-head strong {
	display: block;
	font-size: 15px;
	color: var(--v-ink);
}

.chat-head small {
	color: var(--v-muted);
	font-size: 12px;
}

.chat-status {
	margin-left: auto;
	font-size: 12px;
	color: #1aa06a;
	background: #e9fbf3;
	padding: 3px 10px;
	border-radius: 999px;
}

.chat-row {
	display: flex;
	gap: 10px;
	margin-bottom: 14px;
	align-items: flex-end;
}

.bubble {
	max-width: 76%;
	padding: 12px 16px;
	border-radius: 16px;
	font-size: 14px;
	line-height: 1.6;
	box-shadow: 0 10px 20px -18px rgba(37, 25, 110, 0.5);
}

.bubble-in {
	background: var(--v-soft);
	color: var(--v-body);
	border-bottom-left-radius: 6px;
}

.bubble-out {
	margin-left: auto;
	background: var(--v-gradient);
	color: #fff;
	border-bottom-right-radius: 6px;
}

.chat-input {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-top: 18px;
	padding: 10px 14px;
	border: 1px solid var(--v-line);
	border-radius: 14px;
	font-size: 13px;
	color: var(--v-muted);
}

.chat-input .send {
	width: 30px;
	height: 30px;
	border-radius: 50%;
	background: var(--v-gradient);
	display: flex;
	align-items: center;
	justify-content: center;
}

.chat-input .send svg {
	width: 14px;
	height: 14px;
	fill: #fff;
}

.floating-pill {
	position: absolute;
	z-index: 2;
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 10px 16px;
	background: #fff;
	border-radius: 999px;
	font-size: 13px;
	font-weight: 600;
	color: var(--v-ink);
	box-shadow: 0 18px 34px -22px rgba(37, 25, 110, 0.6);
	border: 1px solid rgba(232, 229, 247, 0.9);
	animation: floaty 5s ease-in-out infinite;
}

.floating-pill svg {
	width: 16px;
	height: 16px;
	fill: var(--v-purple);
}

.floating-pill.pill-a {
	top: -20px;
	left: -14px;
}

.floating-pill.pill-b {
	right: -4px;
	bottom: 44px;
	animation-delay: 1.6s;
}

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

/* ---------------------------------------------------------
   6. 平台卡片
   --------------------------------------------------------- */
.platform-card {
	position: relative;
	display: flex;
	flex-direction: column;
	padding: 26px 24px;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius);
	box-shadow: 0 18px 40px -34px rgba(37, 25, 110, 0.4);
	transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.platform-card:hover {
	transform: translateY(-6px);
	border-color: rgba(115, 96, 242, 0.35);
	box-shadow: var(--v-shadow-hover);
}

.platform-card .icon-wrap {
	width: 48px;
	height: 48px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 14px;
	background: var(--v-purple-soft);
	margin-bottom: 16px;
}

.platform-card .icon-wrap svg {
	width: 24px;
	height: 24px;
	fill: var(--v-purple);
}

.platform-card h3 {
	margin-bottom: 6px;
	font-size: 18px;
}

.platform-card p {
	font-size: 13.5px;
	color: var(--v-muted);
	margin-bottom: 14px;
}

.platform-card .card-link {
	margin-top: auto;
	font-size: 13.5px;
	font-weight: 600;
	color: var(--v-purple-dark);
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.platform-card .card-link::after {
	content: "→";
	transition: transform 0.2s ease;
}

.platform-card:hover .card-link::after {
	transform: translateX(4px);
}

.feature-card {
	padding: 28px 26px;
	background: #fff;
	border-radius: var(--v-radius);
	border: 1px solid var(--v-line);
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--v-shadow);
}

.feature-card .icon-wrap {
	width: 44px;
	height: 44px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 12px;
	background: var(--v-gradient);
	margin-bottom: 18px;
}

.feature-card .icon-wrap svg {
	width: 22px;
	height: 22px;
	fill: #fff;
}

.feature-card h3 {
	font-size: 17px;
	margin-bottom: 8px;
}

.feature-card p {
	margin: 0;
	font-size: 14px;
	color: var(--v-muted);
}

/* ---------------------------------------------------------
   7. 博客卡片
   --------------------------------------------------------- */
.blog-intro {
	margin-bottom: 34px;
}

.post-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 26px;
}

.post-card {
	position: relative;
	display: flex;
	flex-direction: column;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius);
	overflow: hidden;
	transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.post-card:hover {
	transform: translateY(-6px);
	border-color: rgba(115, 96, 242, 0.32);
	box-shadow: var(--v-shadow-hover);
}

.post-card .card-top {
	height: 108px;
	background: var(--v-gradient-soft);
	position: relative;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
}

.post-card .card-top::before {
	content: "";
	position: absolute;
	width: 150px;
	height: 150px;
	border-radius: 50%;
	background: rgba(115, 96, 242, 0.16);
	top: -46px;
	right: -26px;
}

.post-card .card-top::after {
	content: "";
	position: absolute;
	width: 90px;
	height: 90px;
	border-radius: 50%;
	background: rgba(155, 140, 255, 0.22);
	bottom: -36px;
	left: 18px;
}

.post-card .card-top .letter {
	position: relative;
	z-index: 2;
	font-size: 42px;
	font-weight: 800;
	color: rgba(85, 68, 214, 0.42);
	letter-spacing: -0.04em;
}

.post-card .card-body {
	padding: 22px 22px 24px;
	display: flex;
	flex-direction: column;
	flex: 1;
}

.post-card .meta {
	display: flex;
	align-items: center;
	gap: 10px;
	font-size: 12.5px;
	color: var(--v-muted);
	margin-bottom: 10px;
}

.post-card .meta .tag {
	font-size: 11.5px;
	height: 24px;
}

.post-card h3 {
	font-size: 16.5px;
	line-height: 1.55;
	margin-bottom: 10px;
}

.post-card h3 a {
	color: var(--v-ink);
}

.post-card h3 a:hover {
	color: var(--v-purple-dark);
}

.post-card p {
	font-size: 13.5px;
	color: var(--v-muted);
	margin-bottom: 16px;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.post-card .read-more {
	margin-top: auto;
	font-size: 13.5px;
	font-weight: 600;
	color: var(--v-purple-dark);
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.post-card .read-more::after {
	content: "→";
	transition: transform 0.2s ease;
}

.post-card:hover .read-more::after {
	transform: translateX(4px);
}

/* 文章列表首条大卡片 */
.post-list {
	display: grid;
	gap: 18px;
}

.post-row {
	display: grid;
	grid-template-columns: 96px 1fr auto;
	gap: 22px;
	align-items: center;
	padding: 22px 24px;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius);
	transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.post-row:hover {
	border-color: rgba(115, 96, 242, 0.32);
	box-shadow: var(--v-shadow);
	transform: translateY(-3px);
}

.post-row .row-index {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 96px;
	height: 72px;
	border-radius: 14px;
	background: var(--v-gradient-soft);
	font-size: 20px;
	font-weight: 800;
	color: var(--v-purple-dark);
}

.post-row h3 {
	font-size: 17px;
	margin-bottom: 6px;
}

.post-row p {
	margin: 0;
	font-size: 13.5px;
	color: var(--v-muted);
	display: -webkit-box;
	-webkit-line-clamp: 1;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.post-row .row-meta {
	text-align: right;
	font-size: 12.5px;
	color: var(--v-muted);
	white-space: nowrap;
}

.post-row .row-meta .tag {
	margin-bottom: 8px;
	display: inline-flex;
}

/* 分页 */
.pagination {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 8px;
	margin-top: 46px;
}

.pagination a,
.pagination span {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 42px;
	height: 42px;
	padding: 0 14px;
	border: 1px solid var(--v-line);
	border-radius: 12px;
	font-size: 14px;
	color: var(--v-body);
	background: #fff;
}

.pagination a:hover {
	border-color: var(--v-purple);
	color: var(--v-purple-dark);
}

.pagination .current {
	background: var(--v-gradient);
	border-color: transparent;
	color: #fff;
	font-weight: 700;
}

/* ---------------------------------------------------------
   8. 内页 Hero 与面包屑
   --------------------------------------------------------- */
.page-hero {
	position: relative;
	padding: 54px 0 58px;
	background: var(--v-gradient-soft);
	overflow: hidden;
	border-bottom: 1px solid rgba(232, 229, 247, 0.8);
}

.page-hero::after {
	content: "";
	position: absolute;
	width: 460px;
	height: 460px;
	top: -220px;
	right: -160px;
	border-radius: 50%;
	background: radial-gradient(circle at 40% 40%, rgba(115, 96, 242, 0.22), rgba(115, 96, 242, 0) 70%);
}

.page-hero .container {
	position: relative;
	z-index: 2;
}

.page-hero h1 {
	max-width: 900px;
	margin-bottom: 14px;
}

.page-hero .lead {
	max-width: 760px;
	font-size: 16.5px;
	color: var(--v-body);
	margin-bottom: 0;
}

.page-hero .badge-row {
	margin-top: 22px;
}

.breadcrumbs {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
	font-size: 13px;
	color: var(--v-muted);
	margin-bottom: 20px;
}

.breadcrumbs a {
	color: var(--v-muted);
}

.breadcrumbs a:hover {
	color: var(--v-purple-dark);
}

.breadcrumbs .sep {
	color: #c9c4e3;
}

.breadcrumbs .current {
	color: var(--v-purple-dark);
	font-weight: 600;
}

/* 内容区块 */
.content-section {
	padding: 70px 0;
}

.content-section .container {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 300px;
	gap: 56px;
	align-items: start;
}

.content-section--full .container {
	grid-template-columns: minmax(0, 1fr);
	max-width: 900px;
}

.article-side {
	position: sticky;
	top: calc(var(--v-header) + 24px);
	display: grid;
	gap: 18px;
}

.side-card {
	padding: 22px;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius);
	box-shadow: 0 18px 40px -34px rgba(37, 25, 110, 0.35);
}

.side-card h4 {
	font-size: 15px;
	margin-bottom: 12px;
	display: flex;
	align-items: center;
	gap: 8px;
}

.side-card h4 svg {
	width: 17px;
	height: 17px;
	fill: var(--v-purple);
}

.side-card p {
	font-size: 13px;
	color: var(--v-muted);
	margin-bottom: 14px;
}

.side-links {
	list-style: none;
	margin: 0;
	padding: 0;
}

.side-links li {
	margin: 0;
	padding: 9px 0;
	border-bottom: 1px dashed var(--v-line);
	font-size: 13.5px;
}

.side-links li:last-child {
	border-bottom: 0;
	padding-bottom: 0;
}

.side-links a {
	color: var(--v-body);
	display: flex;
	justify-content: space-between;
	gap: 10px;
}

.side-links a:hover {
	color: var(--v-purple-dark);
}

.side-links .num {
	color: var(--v-muted);
	font-size: 12px;
	flex-shrink: 0;
	white-space: nowrap;
}

.side-cta {
	background: var(--v-gradient);
	border: 0;
	color: #fff;
}

.side-cta h4,
.side-cta p {
	color: #fff;
}

.side-cta p {
	opacity: 0.86;
}

.side-cta .btn {
	width: 100%;
}

/* ---------------------------------------------------------
   9. 正文排版
   --------------------------------------------------------- */
.prose {
	font-size: 16.5px;
	line-height: 1.95;
	color: var(--v-body);
}

.prose > *:first-child {
	margin-top: 0;
}

.prose h2 {
	margin: 2.2em 0 0.7em;
	font-size: clamp(22px, 2.4vw, 27px);
	padding-left: 14px;
	border-left: 4px solid var(--v-purple);
	line-height: 1.45;
}

.prose h3 {
	margin: 1.8em 0 0.6em;
	font-size: 20px;
	color: var(--v-purple-darker);
}

.prose h4 {
	margin: 1.6em 0 0.5em;
	font-size: 17px;
}

.prose p {
	margin-bottom: 1.2em;
}

.prose a {
	color: var(--v-purple-dark);
	font-weight: 500;
	border-bottom: 1px solid rgba(115, 96, 242, 0.35);
}

.prose a:hover {
	color: var(--v-purple-darker);
	border-bottom-color: var(--v-purple);
}

.prose ul,
.prose ol {
	padding-left: 1.4em;
	margin-bottom: 1.4em;
}

.prose li {
	margin-bottom: 0.55em;
}

.prose blockquote {
	margin: 1.8em 0;
	padding: 18px 22px;
	background: var(--v-purple-soft);
	border-left: 4px solid var(--v-purple);
	border-radius: 0 var(--v-radius-sm) var(--v-radius-sm) 0;
	color: var(--v-body);
	font-size: 15.5px;
}

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

.prose table {
	width: 100%;
	border-collapse: collapse;
	margin: 1.6em 0;
	font-size: 14.5px;
	background: #fff;
	border-radius: var(--v-radius-sm);
	overflow: hidden;
	box-shadow: 0 0 0 1px var(--v-line);
}

.prose th,
.prose td {
	padding: 12px 14px;
	text-align: left;
	border-bottom: 1px solid var(--v-line);
	vertical-align: top;
}

.prose th {
	background: var(--v-purple-soft);
	color: var(--v-purple-darker);
	font-weight: 700;
	font-size: 14px;
}

.prose tr:last-child td {
	border-bottom: 0;
}

.prose img {
	border-radius: var(--v-radius-sm);
	margin: 1.2em 0;
}

.prose .callout {
	margin: 1.8em 0;
	padding: 18px 22px;
	background: #f0fbf6;
	border: 1px solid #c9eddd;
	border-radius: var(--v-radius-sm);
	font-size: 15px;
}

.prose .callout strong {
	color: #12734f;
}

/* 步骤 */
.steps {
	list-style: none;
	margin: 1.6em 0;
	padding: 0;
	counter-reset: step;
}

.steps li {
	position: relative;
	counter-increment: step;
	padding: 0 0 0 46px;
	margin-bottom: 18px;
	font-size: 15.5px;
}

.steps li::before {
	content: counter(step);
	position: absolute;
	left: 0;
	top: -2px;
	width: 30px;
	height: 30px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 50%;
	background: var(--v-gradient);
	color: #fff;
	font-size: 13px;
	font-weight: 700;
	box-shadow: 0 10px 20px -12px rgba(115, 96, 242, 0.9);
}

/* 文章头部 */
.article-head {
	margin-bottom: 30px;
	padding-bottom: 24px;
	border-bottom: 1px solid var(--v-line);
}

.article-head .meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 14px;
	font-size: 13px;
	color: var(--v-muted);
	margin-top: 16px;
}

.article-head .meta .tag {
	font-size: 12px;
}

.article-head .meta span {
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.article-head .meta svg {
	width: 15px;
	height: 15px;
	fill: var(--v-muted);
}

.article-head h1 {
	margin-bottom: 10px;
	font-size: clamp(27px, 3.4vw, 38px);
	line-height: 1.4;
}

.article-head .dek {
	font-size: 15.5px;
	color: var(--v-muted);
	margin-bottom: 0;
}

/* 目录 */
.toc {
	padding: 20px 22px;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius);
	margin-bottom: 28px;
}

.toc h4 {
	margin: 0 0 10px;
	font-size: 14px;
	display: flex;
	align-items: center;
	gap: 8px;
	color: var(--v-ink);
}

.toc h4 svg {
	width: 16px;
	height: 16px;
	fill: var(--v-purple);
	flex-shrink: 0;
}

.toc ul {
	margin: 0;
	padding-left: 1.1em;
	columns: 2;
	column-gap: 26px;
	font-size: 13.5px;
}

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

.toc a {
	color: var(--v-body);
}

.toc a:hover {
	color: var(--v-purple-dark);
}

.toc a.is-active {
	color: var(--v-purple-dark);
	font-weight: 600;
}

/* 作者框与相关文章 */
.author-box {
	display: flex;
	align-items: flex-start;
	gap: 16px;
	margin-top: 40px;
	padding: 22px;
	background: var(--v-soft);
	border-radius: var(--v-radius);
}

.author-box .avatar {
	width: 52px;
	height: 52px;
	border-radius: 50%;
	background: var(--v-gradient);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 700;
	flex: none;
}

.author-box strong {
	display: block;
	font-size: 15px;
}

.author-box p {
	margin: 4px 0 0;
	font-size: 13.5px;
	color: var(--v-muted);
}

.related {
	margin-top: 56px;
}

.related h2 {
	font-size: 22px;
	margin-bottom: 20px;
}

/* 上一篇/下一篇 */
.post-nav {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px;
	margin-top: 32px;
}

.post-nav a {
	display: block;
	padding: 18px 20px;
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius-sm);
	font-size: 14px;
	color: var(--v-body);
}

.post-nav a:hover {
	border-color: rgba(115, 96, 242, 0.4);
	color: var(--v-purple-dark);
	box-shadow: var(--v-shadow);
}

.post-nav small {
	display: block;
	font-size: 12px;
	color: var(--v-muted);
	margin-bottom: 4px;
}

/* ---------------------------------------------------------
   10. FAQ 手风琴
   --------------------------------------------------------- */
.faq-list {
	display: grid;
	gap: 12px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.faq-item {
	background: #fff;
	border: 1px solid var(--v-line);
	border-radius: var(--v-radius-sm);
	overflow: hidden;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
	border-color: rgba(115, 96, 242, 0.35);
	box-shadow: 0 18px 36px -30px rgba(37, 25, 110, 0.45);
}

.faq-item summary {
	position: relative;
	padding: 18px 52px 18px 22px;
	font-size: 16px;
	font-weight: 600;
	color: var(--v-ink);
	cursor: pointer;
	list-style: none;
}

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

.faq-item summary::after {
	content: "+";
	position: absolute;
	right: 20px;
	top: 50%;
	transform: translateY(-50%);
	width: 24px;
	height: 24px;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 17px;
	font-weight: 400;
	color: var(--v-purple);
	background: var(--v-purple-soft);
	border-radius: 50%;
	transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
	content: "−";
	transform: translateY(-50%) rotate(180deg);
}

.faq-item .faq-answer {
	padding: 0 22px 20px;
	font-size: 14.5px;
	color: var(--v-body);
}

.faq-item .faq-answer p:last-child {
	margin-bottom: 0;
}

.faq-group-title {
	margin: 40px 0 18px;
	font-size: 16px;
	font-weight: 700;
	color: var(--v-purple-darker);
	display: flex;
	align-items: center;
	gap: 10px;
}

.faq-group-title::before {
	content: "";
	width: 4px;
	height: 18px;
	border-radius: 2px;
	background: var(--v-gradient);
}

/* ---------------------------------------------------------
   11. CTA 区块
   --------------------------------------------------------- */
.cta-band {
	position: relative;
	padding: 64px 0;
	background: var(--v-gradient);
	color: #fff;
	overflow: hidden;
}

.cta-band::before {
	content: "";
	position: absolute;
	width: 480px;
	height: 480px;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.12);
	top: -240px;
	right: -120px;
}

.cta-band::after {
	content: "";
	position: absolute;
	width: 320px;
	height: 320px;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.08);
	bottom: -180px;
	left: 8%;
}

.cta-band .container {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 30px;
	flex-wrap: wrap;
}

.cta-band h2 {
	color: #fff;
	margin-bottom: 8px;
	font-size: clamp(23px, 2.8vw, 30px);
}

.cta-band p {
	color: rgba(255, 255, 255, 0.88);
	margin: 0;
	font-size: 15px;
}

/* ---------------------------------------------------------
   12. 页脚
   --------------------------------------------------------- */
.site-footer {
	position: relative;
	margin-top: 0;
	padding: 62px 0 0;
	background: var(--v-ink);
	color: rgba(255, 255, 255, 0.72);
	overflow: hidden;
}

.site-footer::before {
	content: "";
	position: absolute;
	width: 520px;
	height: 520px;
	top: -300px;
	right: -160px;
	border-radius: 50%;
	background: radial-gradient(circle, rgba(115, 96, 242, 0.28), rgba(115, 96, 242, 0) 70%);
}

.site-footer .container {
	position: relative;
	z-index: 2;
}

.footer-grid {
	display: grid;
	grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
	gap: 42px;
	padding-bottom: 46px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .site-brand {
	color: #fff;
	margin-bottom: 14px;
}

.footer-brand p {
	font-size: 13.5px;
	line-height: 1.85;
	color: rgba(255, 255, 255, 0.66);
	max-width: 340px;
}

.footer-col h4 {
	font-size: 14px;
	letter-spacing: 0.04em;
	color: #fff;
	margin-bottom: 16px;
}

.footer-col ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.footer-col li {
	margin-bottom: 10px;
	font-size: 13.5px;
}

.footer-col a {
	color: rgba(255, 255, 255, 0.68);
}

.footer-col a:hover {
	color: #fff;
}

.footer-note {
	font-size: 12.5px;
	color: rgba(255, 255, 255, 0.5);
	line-height: 1.8;
	padding-bottom: 34px;
}

.footer-bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding: 22px 0;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
	font-size: 12.5px;
	color: rgba(255, 255, 255, 0.52);
}

.footer-bottom .links {
	display: flex;
	gap: 18px;
}

.footer-bottom a {
	color: rgba(255, 255, 255, 0.58);
}

.footer-bottom a:hover {
	color: #fff;
}

/* 返回顶部 */
.to-top {
	position: fixed;
	right: 26px;
	bottom: 26px;
	width: 44px;
	height: 44px;
	display: flex;
	align-items: center;
	justify-content: center;
	border: 0;
	border-radius: 14px;
	background: var(--v-gradient);
	color: #fff;
	cursor: pointer;
	box-shadow: 0 14px 28px -14px rgba(115, 96, 242, 0.9);
	opacity: 0;
	visibility: hidden;
	transform: translateY(10px);
	transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
	z-index: 80;
}

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

.to-top svg {
	width: 18px;
	height: 18px;
	fill: #fff;
}

/* 搜索框 */
.search-form {
	display: flex;
	gap: 8px;
	margin-bottom: 26px;
}

.search-form input[type="search"] {
	flex: 1;
	height: 44px;
	padding: 0 16px;
	border: 1px solid var(--v-line);
	border-radius: 12px;
	font-size: 14px;
	background: #fff;
	color: var(--v-ink);
}

.search-form input[type="search"]:focus {
	outline: none;
	border-color: var(--v-purple-light);
	box-shadow: 0 0 0 3px rgba(115, 96, 242, 0.12);
}

.search-form button {
	height: 44px;
	padding: 0 20px;
	border: 0;
	border-radius: 12px;
	background: var(--v-gradient);
	color: #fff;
	font-size: 14px;
	font-weight: 600;
	cursor: pointer;
}

/* 空状态 */
.empty-state {
	padding: 56px 24px;
	text-align: center;
	background: var(--v-soft);
	border-radius: var(--v-radius);
	color: var(--v-muted);
}

/* 表格横向滚动容器 */
.table-wrap {
	width: 100%;
	overflow-x: auto;
	margin: 1.6em 0;
	border-radius: var(--v-radius-sm);
}

.table-wrap table {
	margin: 0;
	min-width: 520px;
}

/* 屏幕阅读器专用文本 */
.screen-reader-text {
	position: absolute !important;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* 状态提示条 */
.notice-bar {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 12px 18px;
	background: #fff8e6;
	border: 1px solid #f5dfa8;
	border-radius: var(--v-radius-sm);
	font-size: 13.5px;
	color: #8a5a00;
	margin-bottom: 24px;
}

.notice-bar svg {
	width: 18px;
	height: 18px;
	fill: #c98a00;
	flex: none;
}

/* 关于页时间线 */
.timeline {
	list-style: none;
	margin: 30px 0 0;
	padding: 0 0 0 26px;
	border-left: 2px solid var(--v-line);
}

.timeline li {
	position: relative;
	padding: 0 0 24px;
}

.timeline li::before {
	content: "";
	position: absolute;
	left: -33px;
	top: 6px;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	background: var(--v-purple);
	box-shadow: 0 0 0 4px rgba(115, 96, 242, 0.14);
}

.timeline strong {
	display: block;
	font-size: 14px;
	color: var(--v-purple-darker);
}

.timeline span {
	font-size: 13.5px;
	color: var(--v-muted);
}

/* ---------------------------------------------------------
   13. 响应式
   --------------------------------------------------------- */
@media (max-width: 1080px) {
	.hero .container {
		gap: 36px;
	}

	.footer-grid {
		grid-template-columns: 1.4fr 1fr 1fr;
	}

	.footer-grid .footer-col:last-child {
		grid-column: 1 / -1;
	}

	.content-section .container {
		grid-template-columns: minmax(0, 1fr) 260px;
		gap: 36px;
	}
}

@media (max-width: 960px) {
	:root {
		--v-header: 64px;
	}

	.primary-nav {
		position: fixed;
		top: var(--v-header);
		left: 0;
		right: 0;
		display: none;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: 12px 24px 22px;
		background: #fff;
		border-bottom: 1px solid var(--v-line);
		box-shadow: 0 24px 40px -30px rgba(37, 25, 110, 0.5);
	}

	.primary-nav.is-open {
		display: flex;
	}

	.primary-nav a {
		padding: 13px 4px;
		border-bottom: 1px solid var(--v-soft);
		font-size: 15px;
	}

	.primary-nav a::after {
		display: none;
	}

	.nav-toggle {
		display: block;
	}

	.header-actions .btn {
		display: none;
	}

	.hero {
		padding: 60px 0 66px;
	}

	.hero .container {
		grid-template-columns: minmax(0, 1fr);
	}

	.device-showcase {
		min-height: auto;
		margin-top: 34px;
	}

	.floating-pill.pill-a {
		left: 0;
	}

	.hero h1 {
		max-width: 100%;
	}

	.grid-4 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.post-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.content-section .container {
		grid-template-columns: minmax(0, 1fr);
	}

	.article-side {
		position: static;
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.section {
		padding: 58px 0;
	}

	.footer-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
		gap: 32px;
	}

	.footer-grid .footer-col:last-child {
		grid-column: auto;
	}
}

@media (max-width: 720px) {
	body {
		font-size: 15.5px;
	}

	.container {
		padding: 0 18px;
	}

	.hero {
		padding: 48px 0 54px;
	}

	.hero-actions .btn {
		flex: 1 1 auto;
	}

	.hero-meta {
		gap: 14px;
	}

	.floating-pill.pill-b {
		right: 8px;
		bottom: -16px;
	}

	.grid-2,
	.grid-3,
	.grid-4,
	.post-grid {
		grid-template-columns: minmax(0, 1fr);
	}

	.split {
		grid-template-columns: minmax(0, 1fr);
		gap: 30px;
	}

	.post-row {
		grid-template-columns: 64px 1fr;
		gap: 16px;
		padding: 18px;
	}

	.post-row .row-index {
		width: 64px;
		height: 56px;
		font-size: 16px;
	}

	.post-row .row-meta {
		grid-column: 2;
		text-align: left;
		margin-top: 4px;
	}

	.page-hero {
		padding: 36px 0 40px;
	}

	.content-section {
		padding: 46px 0;
	}

	.prose {
		font-size: 16px;
	}

	.prose h2 {
		font-size: 21px;
		background: var(--v-soft);
		box-shadow: 0 0 0 10px var(--v-soft);
		border-radius: 4px;
	}

	.prose table {
		font-size: 13px;
	}

	.prose th,
	.prose td {
		padding: 9px 10px;
	}

	.toc ul {
		columns: 1;
	}

	.article-side {
		grid-template-columns: minmax(0, 1fr);
	}

	.footer-grid {
		grid-template-columns: minmax(0, 1fr);
	}

	.post-nav {
		grid-template-columns: minmax(0, 1fr);
	}

	.cta-band .container {
		align-items: flex-start;
	}

	.faq-item summary {
		padding: 15px 46px 15px 16px;
		font-size: 15px;
	}

	.toc {
		display: none;
	}

	.to-top {
		right: 16px;
		bottom: 16px;
	}
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}
}

@media print {
	.site-header,
	.site-footer,
	.article-side,
	.to-top,
	.cta-band {
		display: none !important;
	}
}