:root{--bs_ink:#132d36;--bs_text:#445b63;--bs_muted:#61747b;--bs_green:#087456;--bs_green_dark:#04553e;--bs_mint:#eaf6ef;--bs_line:#dce6e2;--bs_paper:#fff;--bs_radius:16px;--bs_width:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;color:var(--bs_ink);background:var(--bs_paper);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
::selection{background:#c0efd7;color:#102c24}
a{color:inherit;text-decoration:none}
button,a,summary{-webkit-tap-highlight-color:transparent}
a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #078862;outline-offset:5px;border-radius:4px}
h1,h2,h3,p,ol,ul,dl,dd{margin:0}
svg{display:block;max-width:100%}
section[id]{scroll-margin-top:20px}
.bs_container{width:min(var(--bs_width),calc(100% - 64px));margin-inline:auto}
.bs_skip{position:fixed;left:18px;top:-90px;z-index:100;background:#fff;padding:12px 20px;border:2px solid var(--bs_green)}
.bs_skip:focus{top:12px}
.bs_header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--bs_line)}
.bs_header_inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:87px}
.bs_brand{display:inline-flex;align-items:center;gap:11px;line-height:1.35;font-size:18px;font-weight:750;flex-shrink:0}
.bs_brand small{display:block;font-size:11px;letter-spacing:1.5px;margin-top:5px;font-weight:600;color:var(--bs_muted)}
.bs_brand_mark{width:42px;height:42px;background:var(--bs_green);color:#fff;display:flex;align-items:center;justify-content:center;position:relative;font-family:Georgia,serif;font-size:31px;line-height:1;border-radius:10px;font-weight:700}
.bs_brand_mark>span{position:absolute;right:4px;top:3px;font-size:16px;line-height:1;color:#b5efcb;font-family:Arial,sans-serif}
.bs_nav{display:flex;align-items:center;gap:25px;font-size:14px;font-weight:600;white-space:nowrap}
.bs_nav a{position:relative;padding:29px 0;color:var(--bs_text);transition:color .18s}
.bs_nav a:hover{color:var(--bs_green)}
.bs_nav a:hover:after{content:"";position:absolute;bottom:18px;left:0;right:0;height:2px;background:var(--bs_green)}
.bs_button{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:53px;padding:12px 23px;background:var(--bs_green);color:#fff;font-size:15px;font-weight:650;line-height:1.6;border:1px solid var(--bs_green);border-radius:7px;transition:background .18s,transform .18s;white-space:normal;text-align:center}
.bs_button:hover{background:var(--bs_green_dark);border-color:var(--bs_green_dark);transform:translateY(-2px)}
.bs_button_outline{color:var(--bs_ink);border-color:#b9ccc2;background:transparent}
.bs_button_outline:hover{background:#edf5f0;color:var(--bs_green_dark);border-color:var(--bs_green)}
.bs_button_small{min-height:42px;padding:8px 16px;font-size:14px;gap:18px}
.bs_hero{padding:69px 0 61px;background:linear-gradient(116deg,#f7fbf8 0%,#f7fbf8 62%,#eef7f2 100%);border-bottom:1px solid #e9efeb}
.bs_hero_grid{display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:64px}
.bs_eyebrow{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-family:Arial,"Microsoft YaHei",sans-serif;font-size:12px;font-weight:700;letter-spacing:1.3px;color:var(--bs_green);line-height:1.6;margin-bottom:19px}
.bs_eyebrow_cn{color:var(--bs_muted);font-size:12px;letter-spacing:.4px;font-weight:500}
.bs_kicker_line{width:23px;height:2px;background:var(--bs_green)}
h1{font-size:clamp(34px,3.45vw,49px);line-height:1.4;letter-spacing:-1.4px;font-weight:780;margin-bottom:21px}
.bs_accent{color:var(--bs_green)}
.bs_hero_intro{font-size:16px;color:var(--bs_text);max-width:570px;line-height:1.95}
.bs_hero_intro strong{font-weight:650;color:var(--bs_ink)}
.bs_actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:29px}
.bs_eligibility{color:var(--bs_muted);font-size:13px;margin-top:14px;line-height:1.8}
.bs_hero_meta{display:flex;flex-wrap:wrap;gap:10px 25px;font-size:12px;color:var(--bs_muted);margin-top:32px}
.bs_hero_meta>span+span{padding-left:24px;border-left:1px solid #cbdad2}
.bs_product_panel{background:white;border:1px solid #d1e3d9;border-radius:18px;box-shadow:0 16px 42px rgba(29,68,49,.065);padding:25px 29px 0;position:relative;overflow:hidden}
.bs_product_panel:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--bs_green)}
.bs_panel_top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--bs_muted);gap:8px}
.bs_tag{background:#f0f7f2;color:#456955;padding:4px 9px;font-size:10px;letter-spacing:.8px;border-radius:4px}
.bs_product_name{display:flex;align-items:center;gap:18px;margin-top:26px}
.bs_product_letter{display:flex;align-items:center;justify-content:center;width:65px;height:65px;flex-shrink:0;background:var(--bs_green);border-radius:16px;font-family:Georgia,serif;font-size:60px;font-style:italic;color:#d5f2c5;line-height:1;padding-bottom:10px}
.bs_product_name h2{font-family:Arial,sans-serif;font-size:36px;line-height:1.1;letter-spacing:-1px}
.bs_product_name p{font-size:13px;color:var(--bs_muted);margin-top:6px}
.bs_product_summary{font-size:15px;line-height:1.8;color:var(--bs_text);margin:23px 0 19px}
.bs_product_facts{border-top:1px solid var(--bs_line);padding:10px 0}
.bs_product_facts>div{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:8px 0;font-size:14px}
.bs_product_facts dt{color:var(--bs_muted)}
.bs_product_facts dd{font-weight:600;text-align:right}
.bs_product_footer{margin:9px -29px 0;background:#f1f8f4;padding:17px 29px;display:flex;align-items:center;justify-content:space-between;gap:15px}
.bs_product_footer a{font-size:14px;font-weight:650;color:var(--bs_green);display:flex;gap:17px;align-items:center}
.bs_product_footer a:hover{text-decoration:underline;text-underline-offset:4px}
.bs_product_footer>span{font-size:10px;letter-spacing:1px;color:var(--bs_muted)}
.bs_reading_path{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--bs_line)}
.bs_reading_path>a{display:flex;align-items:center;gap:19px;margin:25px 0;padding:0 28px;border-right:1px solid var(--bs_line);transition:color .18s}
.bs_reading_path>a:first-child{padding-left:0}
.bs_reading_path>a:last-child{border:0;padding-right:0}
.bs_path_number{font-family:Georgia,serif;font-size:28px;color:#779c89;line-height:1}
.bs_reading_path strong{font-size:15px;font-weight:650;display:block}
.bs_reading_path small{font-size:12px;color:var(--bs_muted);display:block;margin-top:3px}
.bs_path_arrow{color:var(--bs_green);margin-left:auto}
.bs_reading_path a:hover{color:var(--bs_green)}
.bs_section{padding:67px 0 69px}
.bs_section_border{border-top:1px solid var(--bs_line)}
.bs_section_heading{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:30px}
.bs_section_heading .bs_eyebrow{margin-bottom:9px}
.bs_section h2{font-size:30px;line-height:1.5;font-weight:750;letter-spacing:-.6px}
.bs_section_heading>p{font-size:14px;line-height:1.95;color:var(--bs_muted);max-width:435px;padding-bottom:4px}
.bs_mobile_break{display:none}
.bs_steps{display:grid;grid-template-columns:repeat(4,1fr);list-style:none;padding:0;border:1px solid var(--bs_line);border-radius:var(--bs_radius);overflow:hidden}
.bs_steps li{padding:27px 23px 23px;border-right:1px solid var(--bs_line);display:flex;flex-direction:column;align-items:flex-start}
.bs_steps li:last-child{border-right:0}
.bs_step_number{display:flex;align-items:center;justify-content:center;width:34px;height:34px;background:var(--bs_mint);border-radius:50%;color:var(--bs_green);font-family:Georgia,serif;font-size:20px;margin-bottom:17px}
.bs_steps h3{font-size:18px;line-height:1.6;margin-bottom:10px}
.bs_steps p{font-size:15px;line-height:1.9;color:var(--bs_text);padding-bottom:20px}
.bs_step_hint{border-top:1px solid #e5ece8;padding-top:13px;font-size:12px;color:var(--bs_muted);width:100%;margin-top:auto}
.bs_inline_note{display:flex;align-items:flex-start;gap:12px 20px;background:#f5f8f6;border-left:3px solid #70a98e;margin-top:18px;padding:19px 22px;border-radius:0 7px 7px 0;flex-wrap:wrap}
.bs_inline_note>strong{font-size:14px;white-space:nowrap;line-height:1.9}
.bs_inline_note>p{flex:1;min-width:250px;font-size:14px;color:var(--bs_text);line-height:1.9}
.bs_inline_note>a{font-size:13px;font-weight:600;color:var(--bs_green);white-space:nowrap;line-height:2}
.bs_inline_note>a:hover{text-decoration:underline;text-underline-offset:4px}
.bs_criteria{display:flex;flex-wrap:wrap;gap:14px 30px;margin:0 0 26px;color:var(--bs_text);font-size:14px}
.bs_criteria b{font-family:Georgia,serif;font-weight:400;margin-right:9px;color:var(--bs_green)}
.bs_table_wrap{overflow-x:auto;border:1px solid var(--bs_line);border-radius:var(--bs_radius)}
.bs_compare{border-collapse:collapse;width:100%;table-layout:fixed;text-align:left;min-width:600px;font-size:15px;line-height:1.9}
.bs_compare caption{text-align:left;padding:15px 22px;background:#fff;font-size:13px;color:var(--bs_muted);border-bottom:1px solid var(--bs_line)}
.bs_col_label{width:18%}
.bs_compare thead{background:#f3f7f5}
.bs_compare th,.bs_compare td{padding:19px 23px;vertical-align:top;border-bottom:1px solid var(--bs_line);border-right:1px solid var(--bs_line)}
.bs_compare th:last-child,.bs_compare td:last-child{border-right:0;background:#f2f9f4}
.bs_compare tr:last-child th,.bs_compare tr:last-child td{border-bottom:0}
.bs_compare thead th{font-size:18px;font-weight:700}
.bs_compare thead th:first-child{font-size:14px;font-weight:600;vertical-align:middle}
.bs_table_type{display:block;font-size:12px;font-weight:400;color:var(--bs_muted);margin-bottom:4px}
.bs_compare tbody th{font-size:14px;font-weight:600}
.bs_compare td{color:var(--bs_text)}
.bs_source_note{font-size:12px;color:var(--bs_muted);margin-top:14px;line-height:1.9}
.bs_source_note a{text-decoration:underline;text-underline-offset:3px}
.bs_source_note a:hover{color:var(--bs_green)}
.bs_bstocks_section{background:#0e322b;color:#fff;padding:66px 0}
.bs_bstocks_grid{display:grid;grid-template-columns:1fr 1.25fr;gap:95px}
.bs_bstocks_lead .bs_eyebrow{color:#9acbb0;margin-bottom:18px}
.bs_bstocks_lead h2{font-size:34px;line-height:1.6;font-weight:650;letter-spacing:-.5px}
.bs_bstocks_lead h2>span{color:#b6e5bf}
.bs_bstocks_lead>p:not(.bs_eyebrow){font-size:15px;color:#c1d3ca;margin:19px 0 18px;line-height:1.9}
.bs_text_link_light{display:inline-flex;gap:26px;align-items:center;font-size:14px;color:#d4f6d9;border-bottom:1px solid #769a87;padding:0 0 7px}
.bs_text_link_light:hover{color:#fff;border-color:#fff}
.bs_bstocks_word{font-family:Arial,sans-serif;letter-spacing:-3px;font-size:53px;line-height:1.3;font-weight:700;color:#8eb7a4;margin-top:42px;display:flex;align-items:baseline;gap:17px;flex-wrap:wrap}
.bs_bstocks_word>span{font-size:10px;letter-spacing:1.2px;font-weight:400;color:#a4c1b2}
.bs_feature_list article{display:flex;gap:20px;padding:23px 0;border-bottom:1px solid #335148}
.bs_feature_list article:first-child{padding-top:0}
.bs_feature_list article:last-child{border:0;padding-bottom:0}
.bs_feature_number{font-family:Georgia,serif;font-size:19px;line-height:1.6;color:#9ab8a8;min-width:24px}
.bs_feature_list h3{font-size:18px;font-weight:600;line-height:1.6;margin-bottom:7px}
.bs_feature_list p{font-size:15px;line-height:1.9;color:#c1d3ca}
.bs_download_box{display:grid;grid-template-columns:1fr 1fr;gap:64px;background:#f1f7f3;border:1px solid #d8e7de;padding:40px 44px;border-radius:20px}
.bs_download_label{font-size:12px;letter-spacing:1.4px;color:var(--bs_green);font-weight:700}
.bs_download_intro h3{font-size:29px;line-height:1.55;letter-spacing:-.5px;margin:10px 0 16px}
.bs_download_intro>p{font-size:15px;line-height:1.9;color:var(--bs_text);max-width:380px}
.bs_download_meta{font-size:13px;margin-top:23px}
.bs_download_meta>div{display:flex;gap:15px;padding:5px 0;line-height:1.8}
.bs_download_meta dt{color:var(--bs_muted);width:116px;flex-shrink:0}
.bs_download_meta dd{color:var(--bs_ink)}
.bs_download_options{display:flex;flex-direction:column;gap:14px;justify-content:center}
.bs_device_card{display:flex;align-items:center;gap:17px;border:1px solid #cfded5;border-radius:10px;padding:20px;background:#fff;transition:border-color .18s,box-shadow .18s}
.bs_device_card:hover{border-color:var(--bs_green);box-shadow:0 7px 18px #1735290c}
.bs_device_icon{width:44px;height:50px;display:flex;align-items:center;justify-content:center;color:var(--bs_green);flex-shrink:0}
.bs_device_icon svg{height:36px;width:36px}
.bs_device_card strong{font-size:17px;line-height:1.7;display:block}
.bs_device_card small{font-size:12px;color:var(--bs_muted);display:block;line-height:1.8;margin-top:3px}
.bs_device_arrow{font-size:23px;line-height:1;margin-left:auto;color:var(--bs_green)}
.bs_download_tip{padding:6px 3px 0;color:var(--bs_text);font-size:13px;line-height:1.9}
.bs_download_tip strong{font-size:14px;color:var(--bs_ink)}
.bs_download_tip p{margin:6px 0}
.bs_download_tip a{font-size:13px;color:var(--bs_green);text-decoration:underline;text-underline-offset:3px}
.bs_faq_grid{display:grid;grid-template-columns:.8fr 1.6fr;gap:70px}
.bs_faq_intro .bs_eyebrow{margin-bottom:12px}
.bs_faq_intro h2{font-size:29px;line-height:1.6}
.bs_faq_intro>p:not(.bs_eyebrow){color:var(--bs_muted);font-size:15px;margin:15px 0 18px;line-height:1.9}
.bs_text_link{color:var(--bs_green);font-size:14px;font-weight:600}
.bs_text_link:hover{text-decoration:underline;text-underline-offset:4px}
.bs_faq_list{border-top:1px solid var(--bs_line)}
.bs_faq_list details{border-bottom:1px solid var(--bs_line)}
.bs_faq_list summary{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:16px;font-weight:600;list-style:none;padding:20px 0;cursor:pointer;line-height:1.75}
.bs_faq_list summary::-webkit-details-marker{display:none}
.bs_faq_list summary>span{position:relative;flex:0 0 24px;width:24px;height:24px;border:1px solid #c8d9cf;border-radius:50%}
.bs_faq_list summary>span:before,.bs_faq_list summary>span:after{content:"";position:absolute;left:6px;top:10px;width:10px;height:1px;background:var(--bs_green)}
.bs_faq_list summary>span:after{transform:rotate(90deg)}
.bs_faq_list details[open] summary>span:after{display:none}
.bs_faq_list details[open] summary{color:var(--bs_green)}
.bs_faq_answer{padding:0 40px 22px 0;color:var(--bs_text);font-size:15px;line-height:1.95}
.bs_editorial{display:grid;grid-template-columns:1.8fr 1fr;gap:60px;border-top:1px solid var(--bs_line);padding:26px 0 34px}
.bs_editorial h2{font-size:14px;line-height:1.8;margin-bottom:6px;font-weight:650}
.bs_editorial p{font-size:12px;line-height:1.95;color:var(--bs_muted)}
.bs_editorial ul{padding:0;list-style:none;align-self:center;font-size:12px;line-height:2.1;color:var(--bs_text)}
.bs_editorial a:hover{color:var(--bs_green);text-decoration:underline;text-underline-offset:3px}
.bs_footer{background:#f5f8f6;border-top:1px solid var(--bs_line);padding:29px 0 20px}
.bs_footer_top{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:20px}
.bs_footer_top>.bs_brand{font-size:16px}
.bs_footer_top .bs_brand_mark{width:35px;height:35px;font-size:26px;border-radius:8px}
.bs_footer_top>a:last-child{font-size:13px;color:var(--bs_muted)}
.bs_footer p{font-size:12px;line-height:1.95;color:var(--bs_muted);margin:7px 0}
.bs_footer_bottom{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--bs_muted);padding-top:19px;margin-top:20px;border-top:1px solid #e1e9e4}
.bs_mobile_bar{display:none}
/* 核心说明保持正文大小；次级日期、编号与来源采用较小字号。 */
.bs_product_summary,.bs_steps p,.bs_compare,.bs_bstocks_lead>p:not(.bs_eyebrow),.bs_feature_list p,.bs_download_intro>p,.bs_faq_answer{font-size:16px}
.bs_brand small,.bs_tag,.bs_product_footer>span,.bs_download_label,.bs_panel_top,.bs_step_hint,.bs_reading_path small{font-size:12px}
@media (min-width:1440px){.bs_hero{padding-block:77px 69px}}
@media (max-width:1100px){.bs_header_inner{gap:20px}.bs_nav{gap:18px}.bs_header_cta{display:none}.bs_hero_grid{gap:35px;grid-template-columns:1.2fr 1fr}.bs_product_panel{padding-inline:22px}.bs_product_footer{margin-inline:-22px;padding-inline:22px}.bs_product_footer>span{display:none}.bs_bstocks_grid{gap:55px}.bs_download_box{padding:35px;gap:35px}.bs_steps li{padding:24px 19px}.bs_reading_path>a{gap:13px;padding-inline:20px}.bs_section_heading>p{max-width:365px}.bs_faq_grid{gap:42px}}
@media (max-width:850px){.bs_container{width:calc(100% - 40px)}.bs_header_inner{flex-wrap:wrap;gap:0 20px;min-height:auto;padding-top:14px}.bs_brand{font-size:16px}.bs_brand small{font-size:10px}.bs_brand_mark{width:36px;height:36px;font-size:26px}.bs_header_cta{display:inline-flex;margin-left:auto;min-height:38px;padding:6px 13px;font-size:13px;order:1}.bs_nav{order:2;width:100%;justify-content:space-between;gap:22px;overflow-x:auto;font-size:13px}.bs_nav a{padding:16px 0 12px}.bs_nav a:hover:after{bottom:6px}.bs_hero{padding:42px 0}.bs_hero_grid{gap:25px;grid-template-columns:1.1fr 1fr}h1{font-size:34px;letter-spacing:-1px}.bs_hero_intro{font-size:15px}.bs_eyebrow_cn{display:none}.bs_actions{gap:10px}.bs_actions .bs_button{font-size:14px;padding:11px 17px;gap:14px;min-height:47px}.bs_product_name{gap:12px}.bs_product_name h2{font-size:31px}.bs_product_letter{width:54px;height:54px;font-size:51px;border-radius:13px}.bs_product_name p{font-size:12px}.bs_product_summary{font-size:14px}.bs_product_facts>div{font-size:12px}.bs_tag{font-size:9px}.bs_hero_meta{font-size:11px;gap:8px}.bs_hero_meta>span+span{border:0;padding:0}.bs_reading_path>a{gap:12px;padding-inline:16px}.bs_path_number{font-size:25px}.bs_reading_path strong{font-size:14px}.bs_reading_path small{font-size:11px}.bs_path_arrow{display:none}.bs_section{padding-block:49px}.bs_section_heading{align-items:flex-start;gap:16px}.bs_section h2{font-size:26px}.bs_section_heading>p{max-width:270px;font-size:13px}.bs_steps{grid-template-columns:repeat(2,1fr)}.bs_steps li{padding:25px}.bs_steps li:nth-child(2){border-right:0}.bs_steps li:nth-child(-n+2){border-bottom:1px solid var(--bs_line)}.bs_inline_note{gap:8px 18px}.bs_inline_note>strong{width:100%}.bs_inline_note>a{align-self:flex-end}.bs_inline_note>p{min-width:240px}.bs_bstocks_section{padding-block:48px}.bs_bstocks_grid{gap:35px;grid-template-columns:1fr 1.15fr}.bs_bstocks_lead h2{font-size:28px}.bs_feature_list article{gap:12px;padding-block:18px}.bs_feature_list h3{font-size:16px}.bs_bstocks_lead>p:not(.bs_eyebrow),.bs_feature_list p{font-size:14px}.bs_bstocks_word{font-size:42px;margin-top:29px}.bs_bstocks_word>span{font-size:9px}.bs_download_box{padding:28px;gap:25px}.bs_download_intro h3{font-size:25px}.bs_download_intro>p{font-size:14px}.bs_download_meta{font-size:12px}.bs_download_meta dt{width:96px}.bs_download_meta>div{gap:8px}.bs_device_card{gap:9px;padding:16px 13px}.bs_device_icon{width:32px;height:42px}.bs_device_icon svg{width:29px;height:32px}.bs_device_card strong{font-size:15px}.bs_device_card small{font-size:11px}.bs_device_arrow{font-size:20px}.bs_faq_grid{gap:28px;grid-template-columns:1fr 1.8fr}.bs_faq_intro h2{font-size:24px}.bs_faq_list summary{font-size:15px;gap:12px}.bs_faq_answer{font-size:14px;padding-right:20px}.bs_editorial{gap:30px}}
@media (max-width:620px){html{scroll-padding-top:132px}.bs_container{width:calc(100% - 36px)}body{padding-bottom:calc(77px + env(safe-area-inset-bottom))}.bs_header_inner{padding-top:12px}.bs_brand{font-size:15px;gap:9px}.bs_brand small{font-size:9px;letter-spacing:1.15px;margin-top:4px}.bs_brand_mark{width:34px;height:34px}.bs_nav{font-size:12px;gap:21px}.bs_header_cta{font-size:12px;gap:13px;min-height:36px}.bs_hero{padding:33px 0 28px}.bs_hero_grid{grid-template-columns:1fr;gap:29px}.bs_eyebrow{font-size:11px;letter-spacing:1px;margin-bottom:15px}.bs_eyebrow_cn{display:inline;font-size:11px}.bs_kicker_line{width:17px}h1{font-size:clamp(30px,7.5vw,42px);line-height:1.5;letter-spacing:-.8px;margin-bottom:15px}.bs_hero_intro{font-size:16px;line-height:1.9}.bs_actions{margin-top:22px;display:grid;grid-template-columns:1fr 1.13fr}.bs_actions .bs_button{padding:11px 10px;gap:10px;font-size:14px;min-height:48px}.bs_eligibility{font-size:12px;margin-top:12px}.bs_hero_meta{margin-top:20px;gap:15px;font-size:11px}.bs_hero_meta>span+span{padding-left:14px;border-left:1px solid #cbdad2}.bs_product_panel{padding:19px 21px 0;border-radius:14px}.bs_panel_top{font-size:12px}.bs_tag{font-size:9px}.bs_product_name{margin-top:20px;gap:14px}.bs_product_name h2{font-size:32px}.bs_product_name p{font-size:13px}.bs_product_letter{width:55px;height:55px;font-size:53px}.bs_product_summary{font-size:15px;margin:19px 0 14px}.bs_product_facts>div{font-size:14px;padding:7px 0}.bs_product_footer{margin-inline:-21px;margin-top:5px;padding:14px 21px}.bs_product_footer a{font-size:13px}.bs_product_footer>span{display:block;font-size:9px}.bs_reading_path{gap:0}.bs_reading_path>a{margin:20px 0;padding:0 9px;align-items:flex-start;flex-direction:column;gap:8px}.bs_path_number{font-size:23px}.bs_reading_path strong{font-size:12px;font-weight:650;line-height:1.7}.bs_reading_path small{display:none}.bs_section{padding-block:39px}.bs_section_heading{display:block;margin-bottom:23px}.bs_section_heading .bs_eyebrow{margin-bottom:8px}.bs_section h2{font-size:25px;line-height:1.55;letter-spacing:-.7px}.bs_section_heading>p{max-width:none;margin-top:13px;font-size:14px;line-height:1.9}.bs_section_heading>p br{display:none}.bs_mobile_break{display:block}.bs_steps{grid-template-columns:1fr;border-radius:12px}.bs_steps li{padding:23px 23px 20px 75px;position:relative;border-right:0;border-bottom:1px solid var(--bs_line)}.bs_steps li:last-child{border-bottom:0}.bs_step_number{position:absolute;left:22px;top:23px;width:33px;height:33px}.bs_steps h3{font-size:18px;margin-bottom:7px}.bs_steps p{font-size:16px;padding-bottom:15px;line-height:1.9}.bs_step_hint{font-size:12px;padding-top:10px}.bs_inline_note{padding:16px 18px;margin-top:14px;gap:7px}.bs_inline_note>p{min-width:0;flex-basis:100%;font-size:14px}.bs_inline_note>a{font-size:13px}.bs_criteria{gap:10px 20px;display:grid;font-size:14px;margin-bottom:22px}.bs_compare{min-width:580px;font-size:14px}.bs_compare caption{font-size:12px;padding:12px 16px}.bs_compare th,.bs_compare td{padding:15px 16px}.bs_compare thead th{font-size:16px}.bs_compare tbody th{font-size:13px}.bs_col_label{width:22%}.bs_source_note{font-size:12px}.bs_bstocks_section{padding-block:40px}.bs_bstocks_grid{grid-template-columns:1fr;gap:31px}.bs_bstocks_lead h2{font-size:29px;line-height:1.65}.bs_bstocks_lead>p:not(.bs_eyebrow){font-size:16px;line-height:1.9;margin-block:15px}.bs_bstocks_word{display:none}.bs_text_link_light{font-size:14px}.bs_feature_list{border-top:1px solid #335148}.bs_feature_list article,.bs_feature_list article:first-child{padding:21px 0;gap:17px}.bs_feature_list article:last-child{padding-bottom:0}.bs_feature_list h3{font-size:17px}.bs_feature_list p{font-size:16px;line-height:1.9}.bs_feature_number{font-size:18px}.bs_download_box{grid-template-columns:1fr;padding:24px 21px;gap:22px;border-radius:14px}.bs_download_intro h3{font-size:27px;line-height:1.5;margin:10px 0 14px}.bs_download_intro>p{font-size:16px}.bs_download_meta{font-size:13px;margin-top:18px}.bs_download_meta dt{width:111px}.bs_download_meta>div{gap:7px}.bs_download_options{gap:12px}.bs_device_card{padding:18px 14px;gap:12px}.bs_device_icon{width:31px}.bs_device_card strong{font-size:16px}.bs_device_card small{font-size:12px;margin-top:2px}.bs_device_arrow{font-size:22px}.bs_download_tip{font-size:14px;padding-top:4px}.bs_download_tip strong{font-size:15px}.bs_faq_grid{grid-template-columns:1fr;gap:23px}.bs_faq_intro h2{font-size:25px}.bs_faq_intro>p:not(.bs_eyebrow){font-size:14px;margin:12px 0}.bs_faq_intro h2 br,.bs_faq_intro>p br{display:none}.bs_faq_list summary{font-size:16px;padding:19px 0;gap:15px}.bs_faq_answer{font-size:16px;line-height:1.95;padding:0 0 20px}.bs_editorial{grid-template-columns:1fr;gap:13px;padding:24px 0 27px}.bs_editorial p,.bs_editorial ul{font-size:12px}.bs_footer{padding:25px 0 18px}.bs_footer_top{margin-bottom:17px}.bs_footer_top>.bs_brand{font-size:14px}.bs_footer_top>a:last-child{font-size:12px}.bs_footer p{font-size:12px;line-height:1.9}.bs_footer_bottom{font-size:10px;gap:10px;padding-top:15px;margin-top:17px}.bs_mobile_bar{display:grid;grid-template-columns:1fr 1.3fr;gap:10px;position:fixed;bottom:0;left:0;right:0;z-index:30;padding:11px 18px calc(11px + env(safe-area-inset-bottom));background:rgba(255,255,255,.98);border-top:1px solid #dbe7e0;box-shadow:0 -4px 18px #163c2a08}.bs_mobile_bar .bs_button{min-height:45px;font-size:14px;padding:9px 17px;gap:15px}}
@media (max-width:360px){.bs_container{width:calc(100% - 28px)}.bs_eyebrow_cn{display:none}.bs_nav{gap:18px}.bs_actions .bs_button{font-size:12px;gap:8px}.bs_product_footer>span{display:none}.bs_hero_meta{gap:6px}.bs_hero_meta>span+span{padding-left:9px}.bs_download_box{padding:22px 17px}.bs_device_card{gap:8px;padding-inline:11px}.bs_device_card strong{font-size:14px}.bs_device_card small{font-size:11px}.bs_download_meta{font-size:12px}.bs_download_meta dt{width:104px}.bs_reading_path strong{font-size:11px}.bs_footer_bottom{flex-wrap:wrap;gap:5px}}
.bs_hero_intro,.bs_product_summary,.bs_steps p,.bs_compare td,.bs_bstocks_lead>p:not(.bs_eyebrow),.bs_feature_list p,.bs_download_intro>p,.bs_faq_answer{font-size:16px}
.bs_nav,.bs_actions .bs_button,.bs_header_cta,.bs_product_facts>div,.bs_download_meta,.bs_device_card small,.bs_reading_path strong{font-size:14px}
.bs_brand small,.bs_tag,.bs_product_footer>span,.bs_bstocks_word>span,.bs_footer_bottom,.bs_hero_meta,.bs_reading_path small{font-size:12px}
.bs_product_footer{flex-wrap:wrap}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}.bs_button:hover{transform:none}}
/* 开户步骤按材料与操作分行，便于对照阅读。 */
.bs_account_steps{list-style:none;margin:0;padding:0;border-top:1px solid var(--bs_line)}
.bs_account_steps li{display:grid;grid-template-columns:38px 185px minmax(0,1fr);gap:22px;align-items:start;padding:25px 0;border-bottom:1px solid var(--bs_line)}
.bs_account_steps .bs_step_number{position:static;margin:0;font-size:20px;width:34px;height:34px}
.bs_account_steps h3{font-size:18px;line-height:1.75;font-weight:650}
.bs_account_steps p{font-size:16px;line-height:1.95;color:var(--bs_text)}
.bs_hero_meta{gap:5px;margin-top:24px}
@media(max-width:850px){.bs_account_steps li{grid-template-columns:35px 155px minmax(0,1fr);gap:16px}.bs_account_steps h3{font-size:17px}}
@media(max-width:620px){.bs_account_steps li{grid-template-columns:32px minmax(0,1fr);gap:8px 14px;padding:21px 0}.bs_account_steps h3{align-self:center}.bs_account_steps p{grid-column:2}.bs_account_steps .bs_step_number{width:30px;height:30px;font-size:18px}}
@media print{html{scroll-padding-top:0}body{padding-bottom:0;color:#111}.bs_header,.bs_mobile_bar,.bs_actions,.bs_reading_path,.bs_skip{display:none}.bs_container{width:100%}.bs_hero,.bs_bstocks_section,.bs_footer{background:#fff;color:#111}.bs_hero{padding:20px 0}.bs_hero_grid,.bs_bstocks_grid,.bs_download_box,.bs_faq_grid{display:block}.bs_product_panel{box-shadow:none;margin-top:25px}.bs_section{padding-block:25px}.bs_steps li{break-inside:avoid}.bs_bstocks_lead h2>span,.bs_bstocks_lead>p:not(.bs_eyebrow),.bs_feature_list p,.bs_text_link_light{color:#222}.bs_feature_list{margin-top:22px}.bs_bstocks_word{display:none}.bs_table_wrap{overflow:visible}.bs_compare{min-width:0}.bs_faq_list details{break-inside:avoid}.bs_faq_answer{display:block!important}.bs_editorial{display:block}.bs_download_options{margin-top:20px}}